Pawan Gupta
(RSCH AST, EARTH SCIENCES REMOTE SENS)
| Email: | pawan.gupta@nasa.gov |
| Org Code: | |
| Address: |
NASA/GSFC Mail Code 618 Greenbelt, MD 20771 |
| Employer: |
Brief Bio
Dr. Gupta is currently a research scientist specializing in earth sciences at the Biospheric Sciences Laboratory, NASA Goddard Space Flight Center. He serves as Principal Investigator and leads NASA's AERONET network, while also managing an active air quality research group that utilizes NASA satellites, models, and ground measurements for air quality applications. Dr. Gupta leads collaborative efforts with the global earth science community, focusing on both research and training initiatives. He is the principal investigator on NASA-funded projects and participates in several NASA missions and science teams, including MODIS and VIIRS, NASA’s citizen science initiatives, Making Earth System Data Records for Use in Research Environments (MEaSUREs), and the Health and Air Quality Applied Science Team (HAQAST). For over ten years (2012-2023), Dr. Gupta has managed NASA’s ARSET Air Quality team, leading the development of more than 50 in-person and online trainings for ARSET and other NASA programs. Previously, he also served as portfolio manager for NASA SERVIR applied science team. Dr. Gupta’s research expertise encompasses remote sensing methods, machine learning, data product development, validation, and application development. He has authored over 60 peer-reviewed studies focusing on satellite algorithms, air quality, climate science, statistical modeling, and advanced machine learning and data fusion techniques.
Research Interests
Satellite Remote Sensing of Air Pollution & Air Quality
Climate Change
Earth Radiation Budget
Multi Sensor Data Fusion
Current Projects
AERONET - AErosol RObotic NETwork
Aerosols
https://aeronet.gsfc.nasa.gov/
NASA HAQAST
Aerosols
PI on NASA Health and Air Quality Applied Science Team - https://haqast.org/
Applied Remote Sensing Training (ARSET) Program
Remote Sensing
http://arset.gsfc.nasa.gov/airquality
Positions/Employment
Research Scientist
Universities Space Research Association - NASA Goddard Space Flight Center
May 2010 - November 2022
Selected Publications
Refereed
2026. "Deep-learning for urban air quality: Downscaling satellite nitrogen dioxide with ground observations over Delhi, India.", Atmospheric Pollution Research, 17 (8): 103070 [10.1016/j.apr.2026.103070] [Journal Article/Letter]
2026. "Adaptive expert-guided deep imbalanced regression for global PM2.5 forecasting with temporal convolutional networks and GEOS-FP inputs.", npj Climate and Atmospheric Science, [10.1038/s41612-026-01437-1] [Journal Article/Letter]
2026. "Machine Learning Bias Correction of HRRR-Smoke Surface PM 2.5 Forecasts during the Alaska Wildfire Season.", ACS ES&T Air, 3 (5): 1263-1275 [10.1021/acsestair.5c00409] [Journal Article/Letter]
2026.
"MERRA2_CNN_HAQAST_PM25: Hourly Bias‐Corrected
2026. "Advancing operational global aerosol forecasting with machine learning.", Nature, 651 (8106): 658-665 [10.1038/s41586-026-10234-y] [Journal Article/Letter]
2025. "Urban wetlands as buffers against airborne microplastics and associated pollutants: Implications for public health and sustainable urban management.", Journal of Hazardous Materials Advances, 20 100940 [10.1016/j.hazadv.2025.100940] [Journal Article/Letter]
2025. "Hour by Hour PM2.5 Mapping Using Geostationary Satellites.", ACS ES&T Air, 2 (9): 1816-1830 [10.1021/acsestair.4c00365] [Journal Article/Letter]
2025. "Atmospheric processing and aerosol aging responsible for observed increase in absorptivity of long-range-transported smoke over the southeast Atlantic.", Atmospheric Chemistry and Physics, 25 (14): 7879-7902 [10.5194/acp-25-7879-2025] [Journal Article/Letter]
2025. "PM2.5 Forecasting at U.S. Embassies and Consulates Worldwide Using NASA Model Powered by Machine Learning.", Earth and Space Science, 12 (6): e2025EA004210 [10.1029/2025ea004210] [Journal Article/Letter]
2025. "GOES‐R PM2.5 Evaluation and Bias Correction: A Deep Learning Approach.", Earth and Space Science, 12 (2): [10.1029/2024ea004012] [Journal Article/Letter]
2024. "New top-down estimation of daily mass and number column density of black carbon driven by OMI and AERONET observations.", Remote Sensing of Environment, 315 114436 [10.1016/j.rse.2024.114436] [Journal Article/Letter]
2024. "Aerosol Components Derived from Global AERONET Measurements by GRASP: A New Value-Added Aerosol Component Global Dataset and Its Application.", Bulletin of the American Meteorological Society, 105 (10): E1822-E1848 [10.1175/bams-d-23-0260.1] [Journal Article/Letter]
2024. "Increasing aerosol optical depth spatial and temporal availability by merging datasets from geostationary and sun-synchronous satellites.", Atmospheric Measurement Techniques, 17 (18): 5455-5476 [10.5194/amt-17-5455-2024] [Journal Article/Letter]
2024. "Observational Constraints on the Aerosol Optical Depth–Surface PM2.5 Relationship during Alaskan Wildfire Seasons.", ACS ES&T Air, 1 (9): 1164-1176 [10.1021/acsestair.4c00120] [Journal Article/Letter]
2024. "Review of agricultural biomass burning and its impact on air quality in the continental United States of America.", Environmental Advances, 16 100546 [10.1016/j.envadv.2024.100546] [Journal Article/Letter]
2024. "Parameterizing spectral surface reflectance relationships for the Dark Target aerosol algorithm applied to a geostationary imager.", Atmospheric Measurement Techniques, 17 (7): 1913-1939 [10.5194/amt-17-1913-2024] [Journal Article/Letter]
2023. "The unusual stubble burning season of 2020 in northern India: a satellite perspective.", International Journal of Remote Sensing, 44 (21): 6882-6896 [10.1080/01431161.2023.2277160] [Journal Article/Letter]
2023. "Ground-level gaseous pollutants (NO2, SO2, and CO) in China: daily seamless mapping and spatiotemporal variations.", Atmospheric Chemistry and Physics, 23 (2): 1511-1532 [10.5194/acp-23-1511-2023] [Journal Article/Letter]
2022. "Hourly and Daily PM 2.5 Estimations Using MERRA‐2: A Machine Learning Approach.", Earth and Space Science, 9 (11): [10.1029/2022ea002375] [Journal Article/Letter]
2021. "Machine Learning Algorithm for Estimating Surface PM2.5 in Thailand.", Aerosol and Air Quality Research, 21 (11): 210105 [10.4209/aaqr.210105] [Journal Article/Letter]
2021. "Satellite-based estimation of the impacts of summertime wildfires on PM<sub>2.5</sub> concentration in the United States.", Atmospheric Chemistry and Physics, 21 (14): 11243-11256 [10.5194/acp-21-11243-2021] [Journal Article/Letter]
2020. "Surface and Satellite Observations of Air Pollution in India during COVID-19 Lockdown: Implication to Air Quality.", Sustainable Cities and Society, 102688 [10.1016/j.scs.2020.102688] [Journal Article/Letter]
2020. "Climatological trends in satellite-derived aerosol optical depth over North India and its relationship with crop residue burning: Rural-urban contrast.", Science of The Total Environment, 748 140963 [10.1016/j.scitotenv.2020.140963] [Journal Article/Letter]
2020. "The Dark Target Algorithm for Observing the Global Aerosol System: Past, Present, and Future.", Remote Sensing, 12 (18): 2900 [10.3390/rs12182900] [Journal Article/Letter]
2020. "High-Resolution Gridded Level 3 Aerosol Optical Depth Data from MODIS.", Remote Sensing, 12 (17): 2847 [10.3390/rs12172847] [Journal Article/Letter]
2019. "Retrieval of aerosols over Asia from the Advanced Himawari Imager: Expansion oftemporal coverage of the global Dark Target aerosol product.", Atmospheric Measurement Techniques, 12 6557–6577 [10.5194/amt-12-6557-2019] [Journal Article/Letter]
2019. "Impact of the ARSET Program on Use of Remote-Sensing Data.", ISPRS International Journal of Geo-Information, 8 (6): 261 [10.3390/ijgi8060261] [Journal Article/Letter]
2018. "Impact of California Fires on Local and Regional Air Quality: The Role of a Low-Cost Sensor Network and Satellite Observations.", GeoHealth, [10.1029/2018gh000136] [Journal Article/Letter]
2018. "Validation of MODIS 3 km land aerosol optical depth from NASA's EOS Terra and Aqua missions.", Atmospheric Measurement Techniques, 11 (5): 3145-3159 [10.5194/amt-11-3145-2018] [Journal Article/Letter]
2018. "Agricultural Burning and Air Quality over Northern India: A Synergistic Analysis using NASA’s A-train Satellite Data and Ground Measurements.", Aerosol and Air Quality Research, 18 (7): 1756-1773 [10.4209/aaqr.2017.12.0583] [Journal Article/Letter]
2016. "An Evaluation of MODIS-Retrieved Aerosol Optical Depth over a Mountainous AERONET Site in the Southeastern US.", Aerosol Air Qual. Res., 16 (12): 3243-3255 [10.4209/aaqr.2015.09.0568] [Journal Article/Letter]
2016. "A surface reflectance scheme for retrieving aerosol optical depth over urban surfaces in MODIS Dark Target retrieval algorithm.", Atmospheric Measurement Techniques, 9 (7): 3293-3308 [10.5194/amt-9-3293-2016] [Journal Article/Letter]
2016. "Top-of-the-atmosphere shortwave flux estimation from satellite observations: an empirical neural network approach applied with data from the A-train constellation.", Atmospheric Measurement Techniques, 9 (7): 2813-2826 [10.5194/amt-9-2813-2016] [Journal Article/Letter]
2016. "Monitoring and tracking the trans-Pacific transport of aerosols using multi-satellite aerosol optical depth composites.", Atmospheric Measurement Techniques, 9 (6): 2463-2482 [10.5194/amt-9-2463-2016] [Journal Article/Letter]
2015. "Estimation of particulate matter from satellite- and ground-based observations over Hyderabad, India.", International Journal of Remote Sensing, 36 (24): 6192-6213 [10.1080/01431161.2015.1112929] [Journal Article/Letter]
2015. "Satellite Observation of Atmospheric Compositions for Air Quality and Climate Study.", Advances in Meteorology, 2015 1-2 [10.1155/2015/932012] [Journal Article/Letter]
2015. "Monitoring and tracking the trans-Pacific transport of aerosols using multi-satellite aerosol optical depth retrievals.", Atmospheric Measurement Techniques Discussions, 8 (10): 10319-10360 [10.5194/amtd-8-10319-2015] [Journal Article/Letter]
2014. "Effect of major dust storm on optical, physical, and radiative properties of aerosols over coastal and urban environments in Western India.", International Journal of Remote Sensing, 35 (3): 871-903 [10.1080/01431161.2013.873153] [Journal Article/Letter]
2014. "Satellite data of atmospheric pollution for U.S. air quality applications: Examples of applications, summary of data end-user resources, answers to FAQs, and common mistakes to avoid.", Atmospheric Environment, 94 647-662 [10.1016/j.atmosenv.2014.05.061] [Journal Article/Letter]
2013. "MODIS aerosol optical depth observations over urban areas in Pakistan: Quantity and quality of the data for air quality monitoring.", Atmospheric Pollution Research, 4 (1): 43-52 [10.5094/APR.2013.005] [Journal Article/Letter]
2012. "Fast simulators for satellite cloud optical centroid pressure retrievals; evaluation of OMI cloud retrievals.", Atmospheric Measurement Techniques, 5 (3): 529-545 [Full Text] [10.5194/amt-5-529-2012] [Journal Article/Letter]
2012. "Desert Dust Properties, Modelling, and Monitoring.", Advances in Meteorology, 2012 (483632): 1-2 [10.1155/2012/483632] [Journal Article/Letter]
2012. "Synergistic Use of Remote Sensing and Modeling for Tracing Dust Storms in the Mediterranean.", Advances in Meteorology, 2012 (Article ID 861026): 1-14 [10.1155/2012/861026] [Journal Article/Letter]
2012. "Dust storms and their horizontal dust loading in the Sistan region, Iran.", Aeolian Research, 5 51-62 [10.1016/j.aeolia.2011.12.001] [Journal Article/Letter]
2011. "Multi-sensor satellite remote sensing of dust aerosols over North Africa during GERBILS.", Q.J.R. Meteorol. Soc., 137 (658): 1168-1178 [10.1002/qj.863] [Journal Article/Letter]
2011. "Motivation, rationale and key results from the GERBILS Saharan dust measurement campaign.", Q.J.R. Meteorol. Soc., 137 (658): 1106-1116 [10.1002/qj.797] [Journal Article/Letter]
2009. "Particulate matter air quality assessment using integrated surface, satellite, and meteorological products: 2. A neural network approach.", Journal of Geophysical Research: Atmospheres, 114 (D20): [10.1029/2008JD011496] [Journal Article/Letter]
2009. "Particulate matter air quality assessment using integrated surface, satellite, and meteorological products: Multiple regression approach.", JGR, [DOI 10.1029/2008JD011496] [Journal Article/Letter]
2008. "An evaluation of Terra-MODIS sampling for monthly and annual particulate matter air quality assessment over the Southeastern United States.", Atmospheric Environment, 42 (26): [doi:10.1016/j.atmosenv.2008.04.044] [Journal Article/Letter]
2008. "A Multisensor satellite-based assessment of biomass burning aerosol radiative impact over Amazonia.", Journal of Geophysical Research, 113 (D12): [10.1029/2007JD009486] [Journal Article/Letter]
2008. "Seven year particulate matter air quality assessment from surface and satellite measurements.", Atmos. Chem. Phys., 8 [doi:10.5194/acp-8-3311-2008] [Journal Article/Letter]
2008. "First observational estimates of global clear sky shortwave aerosol direct radiative effect over land.", Geophys. Res. Lett, 35 (4): L04810 [10.1029/2007GL032314] [Journal Article/Letter]
2008. "Multisensor Data Product Fusion for Aerosol Research.", IEEE Trans. Geosci. Remote Sensing, 46 (5): 1407-1415 [10.1109/TGRS.2008.916087] [Journal Article/Letter]
2008. "Relationship of loss, mean age of air and the distribution of CFCs to stratospheric circulation and implications for atmospheric lifetimes.", J. Geophys. Res., 113 (D14): D14309 [10.1029/2007JD009575] [Journal Article/Letter]
2007. "Multi year satellite remote sensing of particulate matter air quality over Sydney, Australia.", IJRS, 28 (20): [10.1080/01431160701241738] [Journal Article/Letter]
2006. "Satellite remote sensing of particulate matter and air quality assessment over global cities.", Atmospheric Environment, 40 (30): [doi:10.1016/j.atmosenv.2006.03.016] [Journal Article/Letter]
Non-Refereed
2023. "Open Source Application of Fusing Aerosol Products from GEO and LEO Satellites.", EGU General Assembly 2023, [10.5194/egusphere-egu23-7292] [Proceedings]