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Sciences and Exploration Directorate

Zachary T. Fasnacht

(SCIENTIFIC PROGRAMMER)

Zachary T. Fasnacht's Contact Card & Information.
Email: zachary.t.fasnacht@nasa.gov
Org Code: 614
Address:
NASA/GSFC
Mail Code 614
Greenbelt, MD 20771
Employer: SCIENCE SYSTEMS AND APPLICATIONS INC

Positions/Employment


Research Scientist

SSAI/NASA GSFC - Greenbelt, MD

April 2018 - Present


Programmer/Analyst I

SSAI/NASA GSFC - Greenbelt, MD

May 2016 - April 2018


Graduate Research Assistant

University of Maryland - College Park, MD

June 2014 - May 2016

Education


B.S. in Meteorology, The Pennsylvania State University 2014

M.S. in Atmospheric Science, University of Maryland, 2016

Awards


William T. Pecora Award - OMI International Team (2018)

NASA GSFC Earth Sciences Division (Atmospheres) - Outstanding Performance in Science Award (2018)

Publications


Refereed

2025. "Utilizing machine learning for high resolution NO2 total columns from PACE OCI." Environmental Research Letters 20 (7): 074052 [10.1088/1748-9326/addfef] [Journal Article/Letter]

2025. "Absorbing Aerosol Effects on Hyperspectral Surface and Underwater UV Irradiances from OMI Measurements and Radiative Transfer Computations." Remote Sensing 17 (3): 562 [10.3390/rs17030562] [Journal Article/Letter]

2025. "Algorithm Theoretical Basis for Version 3 TEMPO O2‐O2 Cloud Product." Earth and Space Science 12 (2): [10.1029/2024ea004165] [Journal Article/Letter]

2024. "Revised estimates of NO2 reductions during the COVID-19 lockdowns using updated TROPOMI NO2 retrievals and model simulations." Atmospheric Environment 326 120459 [10.1016/j.atmosenv.2024.120459] [Journal Article/Letter]

2024. "Noise reduction for solar-induced fluorescence retrievals using machine learning and principal component analysis: simulations and applications to GOME-2 satellite retrievals." Artificial Intelligence for the Earth Systems [10.1175/aies-d-23-0085.1] [Journal Article/Letter]

2024. "High-resolution mapping of nitrogen oxide emissions in large US cities from TROPOMI retrievals of tropospheric nitrogen dioxide columns." Atmospheric Chemistry and Physics 24 (6): 3717-3728 [10.5194/acp-24-3717-2024] [Journal Article/Letter]

2023. "Use of machine learning and principal component analysis to retrieve nitrogen dioxide (NO2) with hyperspectral imagers and reduce noise in spectral fitting." Atmospheric Measurement Techniques 16 (2): 481-500 [10.5194/amt-16-481-2023] [Journal Article/Letter]

2022. "Estimates of Hyperspectral Surface and Underwater UV Planar and Scalar Irradiances from OMI Measurements and Radiative Transfer Computations." Remote Sensing 14 (9): 2278 [10.3390/rs14092278] [Journal Article/Letter]

2022. "Using Machine Learning for Timely Estimates of Ocean Color Information From Hyperspectral Satellite Measurements in the Presence of Clouds, Aerosols, and Sunglint." Frontiers in Remote Sensing 3 [10.3389/frsen.2022.846174] [Journal Article/Letter]

2022. "Use of Hyper-Spectral Visible and Near-Infrared Satellite Data for Timely Estimates of the Earth’s Surface Reflectance in Cloudy and Aerosol Loaded Conditions: Part 1–Application to RGB Image Restoration Over Land With GOME-2." Frontiers in Remote Sensing 2 [10.3389/frsen.2021.716430] [Journal Article/Letter]

2021. "Use of Hyper-Spectral Visible and Near-Infrared Satellite Data for Timely Estimates of the Earth’s Surface Reflectance in Cloudy Conditions: Part 2- Image Restoration With HICO Satellite Data in Overcast Conditions." Frontiers in Remote Sensing 2 21 [10.3389/frsen.2021.721957] [Journal Article/Letter]

2021. "Explicit and consistent aerosol correction for visible wavelength satellite cloud and nitrogen dioxide retrievals based on optical properties from a global aerosol analysis." Atmospheric Measurement Techniques 14 (4): 2857-2871 [10.5194/amt-14-2857-2021] [Journal Article/Letter]

2021. "Detection of anomalies in the UV–vis reflectances from the Ozone Monitoring Instrument." Atmospheric Measurement Techniques 14 (2): 961-974 [10.5194/amt-14-961-2021] [Journal Article/Letter]

2021. "Ozone Monitoring Instrument (OMI) Aura nitrogen dioxide standard product version 4.0 with improved surface and cloud treatments." Atmospheric Measurement Techniques 14 455-479 [10.5194/amt-14-455-2021] [Journal Article/Letter]

2019. "A geometry-dependent surface Lambertian-equivalent reflectivity product for UV-Vis retrievals - Part 2: Evaluation over open ocean." Atmospheric Measurement Techniques 12 (12): 6749-6769 [10.5194/amt-12-6749-2019] [Journal Article/Letter]

2019. "A geometry-dependent surface Lambertian-equivalent reflectivity product for UV–Vis retrievals – Part 1: Evaluation over land surfaces using measurements from OMI at 466nm." Atmospheric Measurement Techniques 12 (7): 3997-4017 [10.5194/amt-12-3997-2019] [Journal Article/Letter]

2016. "Frequency and impact of summertime stratospheric intrusions over Maryland during DISCOVER-AQ (2011): New evidence from NASA's GEOS-5 simulations." J. Geophys. Res. Atmos. [10.1002/2015jd024052] [Journal Article/Letter]