Atmospheric Measurement Techniques

Article	Citations
S5P TROPOMI NO<sub>2</sub> slant column retrieval: method, stability, uncertainties and comparisons with OMI	144
The AERONET Version 3 aerosol retrieval algorithm, associated uncertainties and comparisons to Version 2	141
Comparison of TROPOMI/Sentinel-5 Precursor NO<sub>2</sub> observations with ground-based measurements in Helsinki	127
Ground-based validation of the Copernicus Sentinel-5P TROPOMI NO<sub>2</sub> measurements with the NDACC ZSL-DOAS, MAX-DOAS and Pandonia global networks	122
Methane retrieved from TROPOMI: improvement of the data product and validation of the first 2 years of measurements	88
Real-time pollen monitoring using digital holography	79
Development and application of a United States-wide correction for PM<sub>2.5</sub> data collected with the PurpleAir sensor	78
Introducing the 4.4 km spatial resolution Multi-Angle Imaging SpectroRadiometer (MISR) aerosol product	74
Ozone Monitoring Instrument (OMI) Aura nitrogen dioxide standard product version 4.0 with improved surface and cloud treatments	73
Laboratory evaluation of particle-size selectivity of optical low-cost particulate matter sensors	73
Evaluating Sentinel-5P TROPOMI tropospheric NO<sub>2</sub> column densities with airborne and Pandora spectrometers near New York City and Long Island Sound	69
A scientific algorithm to simultaneously retrieve carbon monoxide and methane from TROPOMI onboard Sentinel-5 Precursor	60
Detectability of CO<sub>2</sub> emission plumes of cities and power plants with the Copernicus Anthropogenic CO<sub>2</sub> Monitoring (CO2M) mi	58
Assessment of the quality of TROPOMI high-spatial-resolution NO<sub>2</sub> data products in the Greater Toronto Area	58
First validation of Aeolus wind observations by airborne Doppler wind lidar measurements	57
Assessing the accuracy of low-cost optical particle sensors using a physics-based approach	56
Sentinel-5P TROPOMI NO<sub>2</sub> retrieval: impact of version v2.2 improvements and comparisons with OMI and ground-based data	55
An overview of and issues with sky radiometer technology and SKYNET	54
Measurements of PM<sub>2.5</sub> with PurpleAir under atmospheric conditions	50
Effect of aerosol composition on the performance of low-cost optical particle counter correction factors	50
Evaluation and calibration of a low-cost particle sensor in ambient conditions using machine-learning methods	49
TROPOMI–Sentinel-5 Precursor formaldehyde validation using an extensive network of ground-based Fourier-transform infrared stations	48
A review and framework for the evaluation of pixel-level uncertainty estimates in satellite aerosol remote sensing	48
A global analysis of climate-relevant aerosol properties retrieved from the network of Global Atmosphere Watch (GAW) near-surface observatories	47
Thermal and near-infrared sensor for carbon observation Fourier transform spectrometer-2 (TANSO-FTS-2) on the Greenhouse gases Observing SATellite-2 (GOSAT-2) during its first year in orbit	47

Validity and limitations of simple reaction kinetics to calculate concentrations of organic compounds from ion counts in PTR-MS	46
MAX-DOAS measurements of tropospheric NO<sub>2</sub> and HCHO in Munich and the comparison to OMI and TROPOMI satellite observations	46
A new method to quantify mineral dust and other aerosol species from aircraft platforms using single-particle mass spectrometry	46
Validation of methane and carbon monoxide from Sentinel-5 Precursor using TCCON and NDACC-IRWG stations	45
Evaluating the impact of spatial resolution on tropospheric NO<sub>2</sub> column comparisons within urban areas using high-resolution airborne data	44
Intercomparison of wind observations from the European Space Agency's Aeolus satellite mission and the ALADIN Airborne Demonstrator	43
Intercomparison of NO<sub>2</sub>, O<sub>4</sub>, O<sub>3</sub> and HCHO slant column measurements by MAX-DOAS and z	43
The GHGSat-D imaging spectrometer	42
A new method for long-term source apportionment with time-dependent factor profiles and uncertainty assessment using SoFi Pro: application to 1 year of organic aerosol data	41
High-frequency monitoring of anomalous methane point sources with multispectral Sentinel-2 satellite observations	41
In-flight calibration results of the TROPOMI payload on board the Sentinel-5 Precursor satellite	40
Intercomparison of nitrous acid (HONO) measurement techniques in a megacity (Beijing)	40
SegCloud: a novel cloud image segmentation model using a deep convolutional neural network for ground-based all-sky-view camera observation	39
ModIs Dust AeroSol (MIDAS): a global fine-resolution dust optical depth data set	38
Effects of the prewhitening method, the time granularity, and the time segmentation on the Mann–Kendall trend detection and the associated Sen's slope	37
OMPS LP Version 2.0 multi-wavelength aerosol extinction coefficient retrieval algorithm	36
A new TROPOMI product for tropospheric NO<sub>2</sub> columns over East Asia with explicit aerosol corrections	36
Validation of Aeolus winds using radiosonde observations and numerical weather prediction model equivalents	36
Validation of TROPOMI tropospheric NO2 columns using dual-scan multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements in Uccle, Brussels	34
CLIMCAPS observing capability for temperature, moisture, and trace gases from AIRS/AMSU and CrIS/ATMS	33
Rain event detection in commercial microwave link attenuation data using convolutional neural networks	32
A machine-learning-based cloud detection and thermodynamic-phase classification algorithm using passive spectral observations	32
Synergy processing of diverse ground-based remote sensing and in situ data using the GRASP algorithm: applications to radiometer, lidar and radiosonde observations	32
Applying the Dark Target aerosol algorithm with Advanced Himawari Imager observations during the KORUS-AQ field campaign	31
A high-resolution monitoring approach of canopy urban heat island using a random forest model and multi-platform observations	30
Assessment of the TROPOMI tropospheric NO<sub>2</sub> product based on airborne APEX observations	30
Consistency and structural uncertainty of multi-mission GPS radio occultation records	29
An improved TROPOMI tropospheric HCHO retrieval over China	29
Cloud-Aerosol Transport System (CATS) 1064 nm calibration and validation	29
N<sub>2</sub>O isotopocule measurements using laser spectroscopy: analyzer characterization and intercomparison	29
A compact QCL spectrometer for mobile, high-precision methane sensing aboard drones	29
The importance of size ranges in aerosol instrument intercomparisons: a case study for the Atmospheric Tomography Mission	28
Applying FP_ILM to the retrieval of geometry-dependent effective Lambertian equivalent reflectivity (GE_LER) daily maps from UVN satellite measurements	28
MUCCnet: Munich Urban Carbon Column network	27
Characterization of anthropogenic organic aerosols by TOF-ACSM with the new capture vaporizer	27
Validation of Aeolus wind products above the Atlantic Ocean	27
Can a regional-scale reduction of atmospheric CO<sub>2</sub> during the COVID-19 pandemic be detected from space? A case study for East China using satellite XCO<sub	27
Sizing response of the Ultra-High Sensitivity Aerosol Spectrometer (UHSAS) and Laser Aerosol Spectrometer (LAS) to changes in submicron aerosol composition and refractive index	27
Towards an operational Ice Cloud Imager (ICI) retrieval product	26
Intercomparison of MAX-DOAS vertical profile retrieval algorithms: studies on field data from the CINDI-2 campaign	26
Assessment of NO<sub>2</sub> observations during DISCOVER-AQ and KORUS-AQ field campaigns	26
TROPOMI aerosol products: evaluation and observations of synoptic-scale carbonaceous aerosol plumes during 2018–2020	26
Evaluation of optical particulate matter sensors under realistic conditions of strong and mild urban pollution	25
Constraining the accuracy of flux estimates using OTM 33A	25
Towards accurate methane point-source quantification from high-resolution 2-D plume imagery	25
Mass spectral characterization of primary emissions and implications in source apportionment of organic aerosol	25
Atmospheric ammonia retrieval from the TANSO-FTS/GOSAT thermal infrared sounder	25
Evaluation of equivalent black carbon source apportionment using observations from Switzerland between 2008 and 2018	25
Isotopic characterization of nitrogen oxides (NO<sub><i>x</i></sub>), nitrous acid (HONO), and nitrate (<i>p</i>NO&a	25
CALIPSO level 3 stratospheric aerosol profile product: version 1.00 algorithm description and initial assessment	24

The use of the 1.27 µm O<sub>2</sub> absorption band for greenhouse gas monitoring from space and application to MicroCarb	24
The CopterSonde: an insight into the development of a smart unmanned aircraft system for atmospheric boundary layer research	24
Overview: Estimating and reporting uncertainties in remotely sensed atmospheric composition and temperature	24
Validation of tropospheric NO<sub>2</sub> column measurements of GOME-2A and OMI using MAX-DOAS and direct sun network observations	24
Version 2 Ozone Monitoring Instrument SO<sub>2</sub> product (OMSO2 V2): new anthropogenic SO<sub>2</sub> vertical column density dataset	24
Intercomparison of low- and high-resolution infrared spectrometers for ground-based solar remote sensing measurements of total column concentrations of CO<sub>2</sub>, CH&a	24
RainForest: a random forest algorithm for quantitative precipitation estimation over Switzerland	24
Scanning polarization lidar LOSA-M3: opportunity for research of crystalline particle orientation in the ice clouds	24
Aerosol retrievals from different polarimeters during the ACEPOL campaign using a common retrieval algorithm	23
Revision of the World Meteorological Organization Global Atmosphere Watch (WMO/GAW) CO<sub>2</sub> calibration scale	23
Atmospheric observations with E-band microwave links – challenges and opportunities	23
An in situ gas chromatograph with automatic detector switching between PTR- and EI-TOF-MS: isomer-resolved measurements of indoor air	23
Performance evaluation of multiple satellite rainfall products for Dhidhessa River Basin (DRB), Ethiopia	22
Cézeaux-Aulnat-Opme-Puy De Dôme: a multi-site for the long-term survey of the tropospheric composition and climate change	22
Testing the near-field Gaussian plume inversion flux quantification technique using unmanned aerial vehicle sampling	22
1.5 years of TROPOMI CO measurements: comparisons to MOPITT and ATom	22
Biomass burning nitrogen dioxide emissions derived from space with TROPOMI: methodology and validation	22
Monitoring of compliance with fuel sulfur content regulations through unmanned aerial vehicle (UAV) measurements of ship emissions	21
Mapping methane plumes at very high spatial resolution with the WorldView-3 satellite	21
Facility level measurement of offshore oil and gas installations from a medium-sized airborne platform: method development for quantification and source identification of methane emissions	20
Counting on chemistry: laboratory evaluation of seed-material-dependent detection efficiencies of ultrafine condensation particle counters	20
Validation of the Sentinel-5 Precursor TROPOMI cloud data with Cloudnet, Aura OMI O<sub>2</sub>–O<sub>2</sub>, MODIS, and Suomi-NPP VIIRS	20
Evaluation of the 15-year ROM SAF monthly mean GPS radio occultation climate data record	20
Evaluation of cloud properties from reanalyses over East Asia with a radiance-based approach	20
Evaluating the PurpleAir monitor as an aerosol light scattering instrument	20
Efficient multi-angle polarimetric inversion of aerosols and ocean color powered by a deep neural network forward model	20
Emission Monitoring Mobile Experiment (EMME): an overview and first results of the St. Petersburg megacity campaign 2019	20
Correcting the impact of the isotope composition on the mixing ratio dependency of water vapour isotope measurements with cavity ring-down spectrometers	20
Multi-scheme chemical ionization inlet (MION) for fast switching of reagent ion chemistry in atmospheric pressure chemical ionization mass spectrometry (CIMS) applications	20
Measurements and quality control of ammonia eddy covariance fluxes: a new strategy for high-frequency attenuation correction	20
Confronting the boundary layer data gap: evaluating new and existing methodologies of probing the lower atmosphere	19
Using a holographic imager on a tethered balloon system for microphysical observations of boundary layer clouds	19
Evaluation of the MODIS Collection 6 multilayer cloud detection algorithm through comparisons with CloudSat Cloud Profiling Radar and CALIPSO CALIOP products	19
Ground-based temperature and humidity profiling: combining active and passive remote sensors	19
Determination of the multiple-scattering correction factor and its cross-sensitivity to scattering and wavelength dependence for different AE33 Aethalometer filter tapes: a multi-instrumental appro	19
Measurement of ammonia, amines and iodine compounds using protonated water cluster chemical ionization mass spectrometry	19
Modeled source apportionment of black carbon particles coated with a light-scattering shell	19
On the estimation of boundary layer heights: a machine learning approach	19
First data set of H<sub>2</sub>O/HDO columns from the Tropospheric Monitoring Instrument (TROPOMI)	19
Towards accurate and practical drone-based wind measurements with an ultrasonic anemometer	19
On the calibration of FIGAERO-ToF-CIMS: importance and impact of calibrant delivery for the particle-phase calibration	19
Robust statistical calibration and characterization of portable low-cost air quality monitoring sensors to quantify real-time O<sub>3</sub> and NO<sub>2&l	19
A channel selection method for hyperspectral atmospheric infrared sounders based on layering	19
Improvement of numerical weather prediction model analysis during fog conditions through the assimilation of ground-based microwave radiometer observations: a 1D-Var study	19
Ensemble-based satellite-derived carbon dioxide and methane column-averaged dry-air mole fraction data sets (2003–2018) for carbon and climate applications	18
SIFT-MS optimization for atmospheric trace gas measurements at varying humidity	18
Intercomparison of atmospheric CO<sub>2</sub> and CH<sub>4</sub> abundances on regional scales in boreal areas using Copernicus Atmosphere Monit	18
TCCON and NDACC X<sub>CO</sub> measurements: difference, discussion and application	18
Determining the daytime Earth radiative flux from National Institute of Standards and Technology Advanced Radiometer (NISTAR) measurements	18
A first comparison of TROPOMI aerosol layer height (ALH) to CALIOP data	18
Performance of a new coaxial ion–molecule reaction region for low-pressure chemical ionization mass spectrometry with reduced instrument wall interactions	18
Field comparison of dry deposition samplers for collection of atmospheric mineral dust: results from single-particle characterization	18
Methane emissions from an oil sands tailings pond: a quantitative comparison of fluxes derived by different methods	18
CALIOP V4 cloud thermodynamic phase assignment and the impact of near-nadir viewing angles	18
Optimization of a gas chromatographic unit for measuring biogenic volatile organic compounds in ambient air	18
Integration and calibration of non-dispersive infrared (NDIR) CO<sub>2</sub> low-cost sensors and their operation in a sensor network covering Switzerland	18
Determination of ice water content (IWC) in tropical convective clouds from X-band dual-polarization airborne radar	18
Characteristics and performance of wind profiles as observed by the radar wind profiler network of China	18
Airborne extractive electrospray mass spectrometry measurements of the chemical composition of organic aerosol	18
Flow-induced errors in airborne in situ measurements of aerosols and clouds	17
Automated precipitation monitoring with the Thies disdrometer: biases and ways for improvement	17
Determination of Aethalometer multiple-scattering enhancement parameters and impact on source apportionment during the winter 2017/18 EMEP/ACTRIS/COLOSSAL campaign in Milan	17
Quantifying CO<sub>2</sub> emissions of a city with the Copernicus Anthropogenic CO<sub>2</sub> Monitoring satellite mission	17
Improving GOES Advanced Baseline Imager (ABI) aerosol optical depth (AOD) retrievals using an empirical bias correction algorithm	17
Total column water vapour retrieval from S-5P/TROPOMI in the visible blue spectral range	17
A convolutional neural network for classifying cloud particles recorded by imaging probes	17
The Disdrometer Verification Network (DiVeN): a UK network of laser precipitation instruments	17
Neural-network-based estimation of regional-scale anthropogenic CO<sub>2</sub> emissions using an Orbiting Carbon Observatory-2 (OCO-2) dataset over East and West Asia	17
Assessment of real-time bioaerosol particle counters using reference chamber experiments	17
Spatial distribution of cloud droplet size properties from Airborne Hyper-Angular Rainbow Polarimeter (AirHARP) measurements	17
Above-cloud aerosol radiative effects based on ORACLES 2016 and ORACLES 2017 aircraft experiments	17
A field intercomparison of three passive air samplers for gaseous mercury in ambient air	17
Development of the DRoplet Ice Nuclei Counter Zurich (DRINCZ): validation and application to field-collected snow samples	17
Estimation of PM<sub>2.5</sub> concentration in China using linear hybrid machine learning model	17
Estimating total attenuation using Rayleigh targets at cloud top: applications in multilayer and mixed-phase clouds observed by ground-based multifrequency radars	17
Filling the gaps of in situ hourly PM<sub>2.5</sub> concentration data with the aid of empirical orthogonal function analysis constrained by diurnal cycles	17
A neural network radiative transfer model approach applied to the Tropospheric Monitoring Instrument aerosol height algorithm	17
Total column water vapor retrieval for Global Ozone Monitoring Experience-2 (GOME-2) visible blue observations	17
The new instrument using a TC–BC (total carbon–black carbon) method for the online measurement of carbonaceous aerosols	17
Quality controls, bias, and seasonality of CO<sub>2</sub> columns in the boreal forest with Orbiting Carbon Observatory-2, Total Carbon Column Observing Network, and EM27/S	17

Implementation of a chemical background method for atmospheric OH measurements by laser-induced fluorescence: characterisation and observations from the UK and China	17
Commercial microwave links as a tool for operational rainfall monitoring in Northern Italy	17
Single-photon laser-induced fluorescence detection of nitric oxide at sub-parts-per-trillion mixing ratios	17
Improved monitoring of shipping NO<sub>2</sub> with TROPOMI: decreasing NO<sub><i>x</i></sub> emissions in European	16
Assessing Measurements of Pollution in the Troposphere (MOPITT) carbon monoxide retrievals over urban versus non-urban regions	16
Characterization of dark current signal measurements of the ACCDs used on board the Aeolus satellite	16
Performance evaluation of THz Atmospheric Limb Sounder (TALIS) of China	16
Validating HY-2A CMR precipitable water vapor using ground-based and shipborne GNSS observations	16
Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during <i>Polarstern</i> cruise PS106	16
New observations of NO<sub>2</sub> in the upper troposphere from TROPOMI	16
Intercomparison and characterization of 23 Aethalometers under laboratory and ambient air conditions: procedures and unit-to-unit variabilities	16
Estimation of the height of the turbulent mixing layer from data of Doppler lidar measurements using conical scanning by a probe beam	16
Tracking aerosols and SO<sub>2</sub> clouds from the Raikoke eruption: 3D view from satellite observations	16
Retrieval of gridded aerosol direct radiative forcing based on multiplatform datasets	16
A Compact Rayleigh Autonomous Lidar (CORAL) for the middle atmosphere	16
Leveraging machine learning for quantitative precipitation estimation from Fengyun-4 geostationary observations and ground meteorological measurements	16
Estimation of turbulence dissipation rate from Doppler wind lidars and in situ instrumentation for the Perdigão 2017 campaign	16
Correction of wind bias for the lidar on board Aeolus using telescope temperatures	16
Monitoring the compliance of sailing ships with fuel sulfur content regulations using unmanned aerial vehicle (UAV) measurements of ship emissions in open water	16
Automated detection of atmospheric NO<sub>2</sub> plumes from satellite data: a tool to help infer anthropogenic combustion emissions	16
Recent advances in measurement techniques for atmospheric carbon monoxide and nitrous oxide observations	15
Use of automatic radiosonde launchers to measure temperature and humidity profiles from the GRUAN perspective	15
Best practices for precipitation sample storage for offline studies of ice nucleation in marine and coastal environments	15
Simultaneous detection of atmospheric HONO and NO<sub>2</sub> utilising an IBBCEAS system based on an iterative algorithm	15
The Portable Ice Nucleation Experiment (PINE): a new online instrument for laboratory studies and automated long-term field observations of ice-nucleating particles	15
Quantification of nitrous acid (HONO) and nitrogen dioxide (NO<sub>2</sub>) in ambient air by broadband cavity-enhanced absorption spectroscopy (IBBCEAS) between 361 and 38	15
On-flight intercomparison of three miniature aerosol absorption sensors using unmanned aerial systems (UASs)	15
An interlaboratory comparison of aerosol inorganic ion measurements by ion chromatography: implications for aerosol pH estimate	15
Consistency of total column ozone measurements between the Brewer and Dobson spectroradiometers of the LKO Arosa and PMOD/WRC Davos	15
Combined use of Mie–Raman and fluorescence lidar observations for improving aerosol characterization: feasibility experiment	15
Methodology for deriving the telescope focus function and its uncertainty for a heterodyne pulsed Doppler lidar	15
Comparison of different droplet measurement techniques in the Braunschweig Icing Wind Tunnel	15
Stationary and portable multipollutant monitors for high-spatiotemporal-resolution air quality studies including online calibration	15
ALADIN laser frequency stability and its impact on the Aeolus wind error	15
Microwave and submillimeter wave scattering of oriented ice particles	15
The effect of rapid relative humidity changes on fast filter-based aerosol-particle light-absorption measurements: uncertainties and correction schemes	15
The 2018 fire season in North America as seen by TROPOMI: aerosol layer height intercomparisons and evaluation of model-derived plume heights	15
Detailed characterization of the CAPS single-scattering albedo monitor (CAPS PMssa) as a field-deployable instrument for measuring aerosol light absorption with the extinction-minus-scattering method	15
Multifactor colorimetric analysis on pH-indicator papers: an optimized approach for direct determination of ambient aerosol pH	15
In-orbit Earth reflectance validation of TROPOMI on board the Sentinel-5 Precursor satellite	15
Evaluation of retrieval methods for planetary boundary layer height based on radiosonde data	14
A portable, robust, stable, and tunable calibration source for gas-phase nitrous acid (HONO)	14
Comparison of co-located refractory black carbon (rBC) and elemental carbon (EC) mass concentration measurements during field campaigns at several European sites	14
Comparison of airborne measurements of NO, NO2, HONO, NOy, and CO during FIREX-AQ	14
Mind the gap – Part 1: Accurately locating warm marine boundary layer clouds and precipitation using spaceborne radars	14
Estimates of mass absorption cross sections of black carbon for filter-based absorption photometers in the Arctic	14
Removing spurious inertial instability signals from gravity wave temperature perturbations using spectral filtering methods	14
Aeolus L2A aerosol optical properties product: standard correct algorithm and Mie correct algorithm	14
Towards improved turbulence estimation with Doppler wind lidar velocity-azimuth display (VAD) scans	14
Optimisation of a thermal desorption–gas chromatography–mass spectrometry method for the analysis of monoterpenes, sesquiterpenes and diterpenes	14
Ground-based observations of cloud and drizzle liquid water path in stratocumulus clouds	14
Inversion of multiangular polarimetric measurements from the ACEPOL campaign: an application of improving aerosol property and hyperspectral ocean color retrievals	14
Development and application of a mass closure PM<sub>2.5</sub> composition online monitoring system	14
Retrieval of aerosol properties from Airborne Hyper-Angular Rainbow Polarimeter (AirHARP) observations during ACEPOL 2017	14
Combining low-cost, surface-based aerosol monitors with size-resolved satellite data for air quality applications	14
Detection of ship plumes from residual fuel operation in emission control areas using single-particle mass spectrometry	14
LiSBOA (LiDAR Statistical Barnes Objective Analysis) for optimal design of lidar scans and retrieval of wind statistics – Part 1: Theoretical framework	14
SAETTA: high-resolution 3-D mapping of the total lightning activity in the Mediterranean Basin over Corsica, with a focus on a mesoscale convective system event	13
Application of TXRF in monitoring trace metals in particulate matter and cloud water	13
Using passive and active observations at microwave and sub-millimetre wavelengths to constrain ice particle models	13
Deriving boundary layer height from aerosol lidar using machine learning: KABL and ADABL algorithms	13
Doppler lidar at Observatoire de Haute-Provence for wind profiling up to 75 km altitude: performance evaluation and observations	13
A multi-purpose, multi-rotor drone system for long-range and high-altitude volcanic gas plume measurements	13
Concurrent satellite and ground-based lightning observations from the Optical Lightning Imaging Sensor (ISS-LIS), the low-frequency network Meteorage and the SAETTA Lightning Mapping Array (LMA) in th	13
MicroPulse DIAL (MPD) – a diode-laser-based lidar architecture for quantitative atmospheric profiling	13
Observation of sensible and latent heat flux profiles with lidar	13
Application of a mobile laboratory using a selected-ion flow-tube mass spectrometer (SIFT-MS) for characterisation of volatile organic compounds and atmospheric trace gases	13
Mie–Raman–fluorescence lidar observations of aerosols during pollen season in the north of France	13
Studying boundary layer methane isotopy and vertical mixing processes at a rewetted peatland site using an unmanned aircraft system	13
A new method to correct the electrochemical concentration cell (ECC) ozonesonde time response and its implications for “background current” and pump efficiency	13
Towards standardized processing of eddy covariance flux measurements of carbonyl sulfide	13
Distributed observations of wind direction using microstructures attached to actively heated fiber-optic cables	13
A new optical-based technique for real-time measurements of mineral dust concentration in PM<sub>10</sub> using a virtual impactor	13
Linking rain into ice microphysics across the melting layer in stratiform rain: a closure study	13
Introducing the extended volatility range proton-transfer-reaction mass spectrometer (EVR PTR-MS)	13
Comparison of formaldehyde measurements by Hantzsch, CRDS and DOAS in the SAPHIR chamber	13
Applying self-supervised learning for semantic cloud segmentation of all-sky images	13
Retrieval of aerosol properties using relative radiance measurements from an all-sky camera	12
Validation of Aeolus Level 2B wind products using wind profilers, ground-based Doppler wind lidars, and radiosondes in Japan	12
Optimal use of the Prede POM sky radiometer for aerosol, water vapor, and ozone retrievals	12
The impact of sampling strategy on the cloud droplet number concentration estimated from satellite data	12
Design and characterization of a semi-open dynamic chamber for measuring biogenic volatile organic compound (BVOC) emissions from plants	12
Evaluation of single-footprint AIRS CH<sub>4</sub> profile retrieval uncertainties using aircraft profile measurements	12
Establishment of AIRS climate-level radiometric stability using radiance anomaly retrievals of minor gases and sea surface temperature	12
Shipborne MAX-DOAS measurements for validation of TROPOMI NO<sub>2</sub> products	12
Assessment of urban aerosol pollution over the Moscow megacity by the MAIAC aerosol product	12
Evaluation of the reflectivity calibration of W-band radars based on observations in rain	12
Multi-year ACSM measurements at the central European research station Melpitz (Germany) – Part 1: Instrument robustness, quality assurance, and impact of upper size cutoff diameter	12
New technique for high-precision, simultaneous measurements of CH<sub>4</sub>, N<sub>2</sub>O and CO<sub>2</sub> con	12
Comparison of the cloud top heights retrieved from MODIS and AHI satellite data with ground-based Ka-band radar	12
Application of low-cost fine particulate mass monitors to convert satellite aerosol optical depth to surface concentrations in North America and Africa	12
Retrieval of eddy dissipation rate from derived equivalent vertical gust included in Aircraft Meteorological Data Relay (AMDAR)	12
Ice crystal number concentration from lidar, cloud radar and radar wind profiler measurements	12
Design and field campaign validation of a multi-rotor unmanned aerial vehicle and optical particle counter	12
LiSBOA (LiDAR Statistical Barnes Objective Analysis) for optimal design of lidar scans and retrieval of wind statistics – Part 2: Applications to lidar measurements of wind turbine wakes	12
Validation of Aeolus winds using ground-based radars in Antarctica and in northern Sweden	12
Simultaneous detection of ozone and nitrogen dioxide by oxygen anion chemical ionization mass spectrometry: a fast-time-response sensor suitable for eddy covariance measurements	12
Revisiting wind speed measurements using actively heated fiber optics: a wind tunnel study	12
Towards spaceborne monitoring of localized CO<sub>2</sub> emissions: an instrument concept and first performance assessment	12
Resolving the size of ice-nucleating particles with a balloon deployable aerosol sampler: the SHARK	12
Effects of clouds on the UV Absorbing Aerosol Index from TROPOMI	12
Comparing black-carbon- and aerosol-absorption-measuring instruments – a new system using lab-generated soot coated with controlled amounts of secondary organic matter	12
Aerosol measurement methods to quantify spore emissions from fungi and cryptogamic covers in the Amazon	12
Modification of a conventional photolytic converter for improving aircraft measurements of NO<sub>2</sub> via chemiluminescence	12
Evaluation of satellite retrievals of liquid clouds from the GOES-13 imager and MODIS over the midlatitude North Atlantic during the NAAMES campaign	12
The MOPITT Version 9 CO product: sampling enhancements and validation	12
Leveraging spatial textures, through machine learning, to identify aerosols and distinct cloud types from multispectral observations	12
A comparative evaluation of Aura-OMI and SKYNET near-UV single-scattering albedo products	12
A Dark Target research aerosol algorithm for MODIS observations over eastern China: increasing coverage while maintaining accuracy at high aerosol loading	12
Continuous atmospheric CO<sub>2</sub>, CH<sub>4</sub> and CO measurements at the Observatoire Pérenne de l'Environnement (OPE) station in France	12
Polarization lidar for detecting dust orientation: system design and calibration	12
Determination of the emission rates of CO<sub>2</sub> point sources with airborne lidar	11
Implementation of an incoherent broadband cavity-enhanced absorption spectroscopy technique in an atmospheric simulation chamber for in situ NO<sub>3</sub> monitoring: char	11
Advanced hodograph-based analysis technique to derive gravity-wave parameters from lidar observations	11
Development of a new correction algorithm applicable to any filter-based absorption photometer	11
Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers	11
Applying machine learning methods to detect convection using Geostationary Operational Environmental Satellite-16 (GOES-16) advanced baseline imager (ABI) data	11
Monitoring the differential reflectivity and receiver calibration of the German polarimetric weather radar network	11
Comparison of ozone measurement methods in biomass burning smoke: an evaluation under field and laboratory conditions	11
An evaluation of the heat test for the ice-nucleating ability of minerals and biological material	11
Aerosol data assimilation in the MOCAGE chemical transport model during the TRAQA/ChArMEx campaign: lidar observations	11
Evaluation of the OMPS/LP stratospheric aerosol extinction product using SAGE III/ISS observations	11
Inter-comparison of MAX-DOAS measurements of tropospheric HONO slant column densities and vertical profiles during the CINDI-2 campaign	11
Assessing the sources of particles at an urban background site using both regulatory instruments and low-cost sensors – a comparative study	11
Suitability of fibre-optic distributed temperature sensing for revealing mixing processes and higher-order moments at the forest–air interface	11
Retrievals of dust-related particle mass and ice-nucleating particle concentration profiles with ground-based polarization lidar and sun photometer over a megacity in central China	11
TROPOMI tropospheric ozone column data: geophysical assessment and comparison to ozonesondes, GOME-2B and OMI	11
Retrieval of intrinsic mesospheric gravity wave parameters using lidar and airglow temperature and meteor radar wind data	11
A systematic re-evaluation of methods for quantification of bulk particle-phase organic nitrates using real-time aerosol mass spectrometry	11
Development of the drop Freezing Ice Nuclei Counter (FINC), intercomparison of droplet freezing techniques, and use of soluble lignin as an atmospheric ice nucleation standard	11
Increase of the particle hit rate in a laser single-particle mass spectrometer by pulse delayed extraction technology	11
Airborne lidar observations of wind, water vapor, and aerosol profiles during the NASA Aeolus calibration and validation (Cal/Val) test flight campaign	11
Development of an antioxidant assay to study oxidative potential of airborne particulate matter	11
Model-based climatology of diurnal variability in stratospheric ozone as a data analysis tool	11
An improved air mass factor calculation for nitrogen dioxide measurements from the Global Ozone Monitoring Experiment-2 (GOME-2)	11
Internal consistency of the IAGOS ozone and carbon monoxide measurements for the last 25 years	11
A low-cost monitor for measurement of fine particulate matter and aerosol optical depth – Part 2: Citizen-science pilot campaign in northern Colorado	11
Distributed wind measurements with multiple quadrotor unmanned aerial vehicles in the atmospheric boundary layer	11
Ozone formation sensitivity study using machine learning coupled with the reactivity of volatile organic compound species	11
Fragmentation inside proton-transfer-reaction-based mass spectrometers limits the detection of ROOR and ROOH peroxides	11
Inferring the absorption properties of organic aerosol in Siberian biomass burning plumes from remote optical observations	11
Retrieval of atmospheric CH<sub>4</sub> vertical information from ground-based FTS near-infrared spectra	11
Validation of the Aeolus L2B wind product with airborne wind lidar measurements in the polar North Atlantic region and in the tropics	11
Analysis of 3D cloud effects in OCO-2 XCO2 retrievals	11
Machine learning calibration of low-cost NO<sub>2</sub> and PM<sub>10</sub> sensors: non-linear algorithms and their impact on site transferabil	11

Gradient boosting machine learning to improve satellite-derived column water vapor measurement error	11
An improved TROPOMI tropospheric NO<sub>2</sub> research product over Europe	11
Long-term reliability of the Figaro TGS 2600 solid-state methane sensor under low-Arctic conditions at Toolik Lake, Alaska	11
Retrieval of aerosol fine-mode fraction over China from satellite multiangle polarized observations: validation and comparison	10
Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA	10
Validation of the TROPOspheric Monitoring Instrument (TROPOMI) surface UV radiation product	10
High-humidity tandem differential mobility analyzer for accurate determination of aerosol hygroscopic growth, microstructure, and activity coefficients over a wide range of relative humidity	10
Benefit of ozone observations from Sentinel-5P and future Sentinel-4 missions on tropospheric composition	10
Triple-frequency radar retrieval of microphysical properties of snow	10
In situ observations of greenhouse gases over Europe during the CoMet 1.0 campaign aboard the HALO aircraft	10
Wind sensing with drone-mounted wind lidars: proof of concept	10
Estimating raindrop size distributions using microwave link measurements: potential and limitations	10
Atmospheric boundary layer height from ground-based remote sensing: a review of capabilities and limitations	10
Assessment of particle size magnifier inversion methods to obtain the particle size distribution from atmospheric measurements	10
Continuous online monitoring of ice-nucleating particles: development of the automated Horizontal Ice Nucleation Chamber (HINC-Auto)	10
Comparison of dimension reduction techniques in the analysis of mass spectrometry data	10
Integration of GOCI and AHI Yonsei aerosol optical depth products during the 2016 KORUS-AQ and 2018 EMeRGe campaigns	10
Correcting high-frequency losses of reactive nitrogen flux measurements	10
Automated identification of local contamination in remote atmospheric composition time series	10
Relative sky radiance from multi-exposure all-sky camera images	10
Retrieval improvements for the ALADIN Airborne Demonstrator in support of the Aeolus wind product validation	10
Update of Infrared Atmospheric Sounding Interferometer (IASI) channel selection with correlated observation errors for numerical weather prediction (NWP)	10
Long-term column-averaged greenhouse gas observations using a COCCON spectrometer at the high-surface-albedo site in Gobabeb, Namibia	10
IMK/IAA MIPAS temperature retrieval version 8: nominal measurements	10
Improved SIFTER v2 algorithm for long-term GOME-2A satellite retrievals of fluorescence with a correction for instrument degradation	10
Cloud height measurement by a network of all-sky imagers	10
Intercomparison study of atmospheric <sup>222</sup>Rn and <sup>222</sup>Rn progeny monitors	10
Inter-comparison of wind measurements in the atmospheric boundary layer and the lower troposphere with Aeolus and a ground-based coherent Doppler lidar network over China	10
Long-term NO<sub><i>x</i></sub> measurements in the remote marine tropical troposphere	10
Characterization of aerosol size properties from measurements of spectral optical depth: a global validation of the GRASP-AOD code using long-term AERONET data	10
Evaluating the measurement interference of wet rotating-denuder–ion chromatography in measuring atmospheric HONO in a highly polluted area	10
XCO<sub>2</sub> estimates from the OCO-2 measurements using a neural network approach	9
Anthropogenic CO<sub>2</sub> monitoring satellite mission: the need for multi-angle polarimetric observations	9
Controlled-release experiment to investigate uncertainties in UAV-based emission quantification for methane point sources	9
Characterization and first results from LACIS-T: a moist-air wind tunnel to study aerosol–cloud–turbulence interactions	9
Evaluating different methods for elevation calibration of MAX-DOAS (Multi AXis Differential Optical Absorption Spectroscopy) instruments during the CINDI-2 campaign	9
Evaluation and optimization of ICOS atmosphere station data as part of the labeling process	9
A 2-year intercomparison of continuous-wave focusing wind lidar and tall mast wind measurements at Cabauw	9
Variability of the Brunt–Väisälä frequency at the OH<sup>∗</sup>-airglow layer height at low and midlatitudes	9
Integrated System for Atmospheric Boundary Layer Height Estimation (ISABLE) using a ceilometer and microwave radiometer	9
A new global grid-based weighted mean temperature model considering vertical nonlinear variation	9
A comparison of the impact of TROPOMI and OMI tropospheric NO<sub>2</sub> on global chemical data assimilation	9
Probabilistic retrieval of volcanic SO<sub>2</sub> layer height and partial column density using the Cross-track Infrared Sounder (CrIS)	9
Compact and lightweight mid-infrared laser spectrometer for balloon-borne water vapor measurements in the UTLS	9
Why we need radar, lidar, and solar radiance observations to constrain ice cloud microphysics	9
Spectral calibration of the MethaneAIR instrument	9
Issues related to the retrieval of stratospheric-aerosol particle size information based on optical measurements	9
Assessment of the quality of ACE-FTS stratospheric ozone data	9
iDirac: a field-portable instrument for long-term autonomous measurements of isoprene and selected VOCs	9
Three-dimensional radiative transfer effects on airborne and ground-based trace gas remote sensing	9
Nano-hygroscopicity tandem differential mobility analyzer (nano-HTDMA) for investigating hygroscopic properties of sub-10 nm aerosol nanoparticles	9
Detection and quantification of CH<sub>4</sub> plumes using the WFM-DOAS retrieval on AVIRIS-NG hyperspectral data	9
Multifrequency radar observations of clouds and precipitation including the G-band	9
Measurements of CFC-11, CFC-12, and HCFC-22 total columns in the atmosphere at the St. Petersburg site in 2009–2019	9
Application of the ECT9 protocol for radiocarbon-based source apportionment of carbonaceous aerosols	9
Development of on-site self-calibration and retrieval methods for sky-radiometer observations of precipitable water vapor	9
XCO<sub>2</sub> retrieval for GOSAT and GOSAT-2 based on the FOCAL algorithm	9
Quantifying hail size distributions from the sky – application of drone aerial photogrammetry	9
Quantification of isomer-resolved iodide chemical ionization mass spectrometry sensitivity and uncertainty using a voltage-scanning approach	9
Atmospheric ammonia (NH<sub>3</sub>) over the Paris megacity: 9 years of total column observations from ground-based infrared remote sensing	9
An experimental study on light scattering matrices for Chinese loess dust with different particle size distributions	9
Estimating cloud condensation nuclei concentrations from CALIPSO lidar measurements	9
The Universal Cloud and Aerosol Sounding System (UCASS): a low-cost miniature optical particle counter for use in dropsonde or balloon-borne sounding systems	9
Constraining the response factors of an extractive electrospray ionization mass spectrometer for near-molecular aerosol speciation	9
Assessment of global total column water vapor sounding using a spaceborne differential absorption radar	9
Quantifying fugitive gas emissions from an oil sands tailings pond with open-path Fourier transform infrared measurements	9
Airborne measurements of particulate organic matter by proton-transfer-reaction mass spectrometry (PTR-MS): a pilot study	8
Estimates of lightning NO<sub><i>x</i></sub> production based on high-resolution OMI NO<sub>2</sub> retrievals over	8
Facility for production of ambient-like model aerosols (PALMA) in the laboratory: application in the intercomparison of automated PM monitors with the reference gravimetric method	8
Dealing with spatial heterogeneity in pointwise-to-gridded- data comparisons	8
Development of a small unmanned aircraft system to derive CO<sub>2</sub> emissions of anthropogenic point sources	8
Estimation of ship emission rates at a major shipping lane by long-path DOAS measurements	8
XCO<sub>2</sub> observations using satellite measurements with moderate spectral resolution: investigation using GOSAT and OCO-2 measurements	8
Determining cloud thermodynamic phase from the polarized Micro Pulse Lidar	8
Eddy covariance flux measurements of gaseous elemental mercury over a grassland	8
Photoacoustic measurement with infrared band-pass filters significantly overestimates NH<sub>3</sub> emissions from cattle houses due to volatile organic compound (VOC) int	8
Atmospheric precipitable water vapor and its correlation with clear-sky infrared temperature observations	8
A geometry-dependent surface Lambertian-equivalent reflectivity product for UV–Vis retrievals – Part 2: Evaluation over open ocean	8
Improved calibration procedures for the EM27/SUN spectrometers of the COllaborative Carbon Column Observing Network (COCCON)	8
An LES-based airborne Doppler lidar simulator and its application to wind profiling in inhomogeneous flow conditions	8
Temperature and water vapour measurements in the framework of the Network for the Detection of Atmospheric Composition Change (NDACC)	8
Simultaneous measurements of the relative-humidity-dependent aerosol light extinction, scattering, absorption, and single-scattering albedo with a humidified cavity-enhanced albedometer	8
A systematic assessment of water vapor products in the Arctic: from instantaneous measurements to monthly means	8
Evaluating uncertainty in sensor networks for urban air pollution insights	8
Vertical wind profiling from the troposphere to the lower mesosphere based on high-resolution heterodyne near-infrared spectroradiometry	8
Dynamic infrared gas analysis from longleaf pine fuel beds burned in a wind tunnel: observation of phenol in pyrolysis and combustion phases	8
The Berkeley Environmental Air-quality and CO<sub>2</sub> Network: field calibrations of sensor temperature dependence and assessment of network scale CO<sub>	8
Evaluation of ARM tethered-balloon system instrumentation for supercooled liquid water and distributed temperature sensing in mixed-phase Arctic clouds	8
Net CO<sub>2</sub> fossil fuel emissions of Tokyo estimated directly from measurements of the Tsukuba TCCON site and radiosondes	8
Retrieval of atmospheric CO<sub>2</sub> vertical profiles from ground-based near-infrared spectra	8
Physical characteristics of frozen hydrometeors inferred with parameter estimation	8
Unsupervised classification of snowflake images using a generative adversarial network and <i>K</i>-medoids classification	8
A study on the performance of low-cost sensors for source apportionment at an urban background site	8
Early results and validation of SAGE III-ISS ozone profile measurements from onboard the International Space Station	8
Coupling a gas chromatograph simultaneously to a flame ionization detector and chemical ionization mass spectrometer for isomer-resolved measurements of particle-phase organic compounds	8
Intra-annual variations of spectrally resolved gravity wave activity in the upper mesosphere/lower thermosphere (UMLT) region	8
Experimental assessment of a micro-pulse lidar system in comparison with reference lidar measurements for aerosol optical properties retrieval	8
Atmospheric tomography using the Nordic Meteor Radar Cluster and Chilean Observation Network De Meteor Radars: network details and 3D-Var retrieval	8
Comparative characterization of the performance of bio-aerosol nebulizers in connection with atmospheric simulation chambers	8
A compact static birefringent interferometer for the measurement of upper atmospheric winds: concept, design and lab performance	8
Directionally dependent Lambertian-equivalent reflectivity (DLER) of the Earth's surface measured by the GOME-2 satellite instruments	8
GNSS-based water vapor estimation and validation during the MOSAiC expedition	8
Testing the efficacy of atmospheric boundary layer height detection algorithms using uncrewed aircraft system data from MOSAiC	8
Filtering of pulsed lidar data using spatial information and a clustering algorithm	8
Nocturnal aerosol optical depth measurements with modified sky radiometer POM-02 using the moon as a light source	8
Improved chloride quantification in quadrupole aerosol chemical speciation monitors (Q-ACSMs)	8
Arctic observations and numerical simulations of surface wind effects on Multi-Angle Snowflake Camera measurements	8
Application of an O-ring pinch device as a constant-pressure inlet (CPI) for airborne sampling	8
Characterisation of the Manchester Aerosol Chamber facility	8
A compact incoherent broadband cavity-enhanced absorption spectrometer for trace detection of nitrogen oxides, iodine oxide and glyoxal at levels below parts per billion for field applications	8
Mind the gap – Part 2: Improving quantitative estimates of cloud and rain water path in oceanic warm rain using spaceborne radars	8
A compact, high-purity source of HONO validated by Fourier transform infrared and thermal-dissociation cavity ring-down spectroscopy	8
A vacuum ultraviolet ion source (VUV-IS) for iodide–chemical ionization mass spectrometry: a substitute for radioactive ion sources	8
Comparison of turbulence measurements by a CSAT3B sonic anemometer and a high-resolution bistatic Doppler lidar	8
Iodide CIMS and <i>m</i>∕<i>z</i> 62: the detection of HNO<sub>3</sub> as NO<sub>3</sub>	8
Neural network for aerosol retrieval from hyperspectral imagery	8
Studies of the horizontal inhomogeneities in NO<sub>2</sub> concentrations above a shipping lane using ground-based multi-axis differential optical absorption spectroscopy	8
Mobile-platform measurement of air pollutant concentrations in California: performance assessment, statistical methods for evaluating spatial variations, and spatial representativeness	8
Correction of a lunar-irradiance model for aerosol optical depth retrieval and comparison with a star photometer	8