Sarah Strode received her Ph.D in Atmospheric Science from the University of Washington. Her thesis work focused on the air-sea exchange and global transport of mercury. Sarah came to Goddard in 2009. Her research focuses on the interactions between atmospheric chemistry and climate, trends in atmospheric pollutants, and global transport of trace gases. She uses GEOS-5 Chemistry Climate Model (GEOSCCM) and the Global Modeling Initiative (GMI) Chemical Transport Model to analyze the trace gas distributions and trends seen in satellite, aircraft, and ground-based observations. She is also involved in the Atmospheric Tomography Mission (ATom) and the Chemistry-Climate Modeling Initiative (CCMI).
Sarah A Strode
(SCIENTIST)
| Email: | sarah.a.strode@nasa.gov |
| Phone: | 301.614.5547 |
| Org Code: | 614 |
| Address: |
NASA/GSFC Mail Code 614 Greenbelt, MD 20771 |
| Employer: | MORGAN STATE UNIV. |
Brief Bio
Research Interests
Trends in Atmospheric Pollutants
Earth Science: Atmospheric ChemistryAtmospheric concentrations of pollutants such as ozone and carbon monoxide (CO) are changing over time due to human activities and air pollution regulations. I use global atmospheric models along with satellite and surface observations to investigate what causes the observed trends and variability in atmospheric pollutants. I am also interested in using models to predict how observations from future missions will help constrain pollutant trends.
Oxidizing Capacity of the Troposphere
Earth Science: Atmospheric ChemistryThe hydroxyl radical (OH) is the primary sink for many atmospheric pollutants and for some greenhouse gases such as methane. Consequently, the amount of OH in the troposphere affects air quality and climate by controlling the lifetime of these gases. My research uses models to quantify the impact of CO concentrations, overhead ozone, water vapor, and other factors on concentrations of OH.
Chemistry-Climate Modeling
Earth Science: ClimateClimate change can alter the emissions and chemistry of reactive trace gases, while changes in reactive greenhouse gases such as ozone and methane impact the climate. Chemistry-climate models allow us to simulate the coupled chemistry-climate system to better understand the feedbacks between atmospheric chemistry and climate.
Positions/Employment
Associate Research Scientist
Morgan State University - NASA GSFC
December 2021 - Present
Contributes to development and evaluation of the GEOSCCM
Scientist II
USRA - NASA GSFC, Code 614
August 2011 - November 2021
- Contributed to the ATom campaign by providing chemical transport modeling of the mission period and chemical forecasts during the mission
- conducted research on trace gases as part of the Atmospheric Chemistry and Dynamics Laboratory
- Investigated trends and variability in atmospheric composition by using models to analyze satellite, surface, and suborbital observations
- contributed to model intercomparison studies
Atmospheric Constituent Scientist
SAIC - NASA GSFC
September 2009 - August 2011
- Contributed to atmospheric modeling efforts of the Global Modeling and Assimilation Office (GMAO)
- Updated trace gas emissions for the GEOS-5 Chemistry Climate Model
Project Scientist
O'Brien and Gere - Blue Bell, PA
July 2008 - June 2009
- Prepared greenhouse gas inventories
- Contributed to human health risk assessments
Education
Ph.D: Atmospheric Science; University of Washington, Seattle, WA (2008)
Dissertation Topic: “Mercury in the Atmosphere and Ocean: Sources, Transport, and Global Impacts”
M.S: Atmospheric Science; University of Washington, Seattle, WA (2005)
B.A.: Chemistry and Mathematics, Washington University in St. Louis, St. Louis, MO (2002)
Professional Service
Reviewer for several scientific journals including: Nature Communications, Journal of Geophysical Research, Geophysical Research Letters, Atmospheric Chemistry and Physics, Atmospheric Environment, and Environmental Science and Technology, and Environmental Pollution
Selected Publications
Refereed
2025. "The Cold‐Pole Bias Severely Weakens Southern Hemisphere Springtime Stratosphere‐Troposphere Coupling.", Geophysical Research Letters, 52 (21): e2025GL118306 [10.1029/2025gl118306] [Journal Article/Letter]
2024. "Opinion: Beyond global means – novel space-based approaches to indirectly constrain the concentrations of and trends and variations in the tropospheric hydroxyl radical (OH).", Atmospheric Chemistry and Physics, 24 (22): 13001-13023 [10.5194/acp-24-13001-2024] [Journal Article/Letter]
2022. "SAGE III/ISS ozone and NO2 validation using diurnal scaling factors.", Atmospheric Measurement Techniques, 15 (20): 6145-6161 [10.5194/amt-15-6145-2022] [Journal Article/Letter]
2021. "Description of the NASA GEOS Composition Forecast Modeling System GEOS‐CF v1.0.", Journal of Advances in Modeling Earth Systems, 13 (4): [10.1029/2020ms002413] [Journal Article/Letter]
2021. "Mapping Yearly Fine Resolution Global Surface Ozone through the Bayesian Maximum Entropy Data Fusion of Observations and Model Output for 1990–2017.", Environmental Science & Technology, acs.est.0c07742 [10.1021/acs.est.0c07742] [Journal Article/Letter]
2020. "Aircraft observations since the 1990s reveal increases of tropospheric ozone at multiple locations across the Northern Hemisphere.", Science Advances, 6 (34): eaba8272 [10.1126/sciadv.aba8272] [Journal Article/Letter]
2020. "Strong sensitivity of the isotopic composition of methane to the plausible range of tropospheric chlorine.", Atmospheric Chemistry and Physics, 20 (14): 8405-8419 [10.5194/acp-20-8405-2020] [Journal Article/Letter]
2020. "Abrupt decline in tropospheric nitrogen dioxide over China after the outbreak of COVID-19.", Science Advances, 6 (28): eabc2992 [10.1126/sciadv.abc2992] [Journal Article/Letter]
2020. "Attribution of Chemistry-Climate Model Initiative (CCMI) ozone radiative flux bias from satellites.", Atmospheric Chemistry and Physics, 20 (1): 281-301 [10.5194/acp-20-281-2020] [Journal Article/Letter]
2019. "Disentangling the Drivers of the Summertime Ozone‐Temperature Relationship Over the United States.", Journal of Geophysical Research: Atmospheres, 124 (19): 10503-10524 [10.1029/2019jd030572] [Journal Article/Letter]
2019. "Trends in global tropospheric ozone inferred from a composite record of TOMS/OMI/MLS/OMPS satellite measurements and the MERRA-2 GMI simulation.", Atmospheric Chemistry and Physics, 19 (5): 3257-3269 [10.5194/acp-19-3257-2019] [Journal Article/Letter]
2019. "Global changes in the diurnal cycle of surface ozone.", Atmospheric Environment, 199 323-333 [10.1016/j.atmosenv.2018.11.028] [Journal Article/Letter]
2018. "Changes in Global Tropospheric OH Expected as a Result of Climate Change Over the Last Several Decades.", Journal of Geophysical Research: Atmospheres, 123 (18): 10,774-10,795 [10.1029/2018jd028388] [Journal Article/Letter]
2018. "Forecasting carbon monoxide on a global scale for the ATom-1 aircraft mission: insights from airborne and satellite observations and modeling.", Atmospheric Chemistry and Physics, 18 (15): 10955-10971 [10.5194/acp-18-10955-2018] [Journal Article/Letter]
2018. "How well can global chemistry models calculate the reactivity of short-lived greenhouse gases in the remote troposphere, knowing the chemical composition.", Atmospheric Measurement Techniques, 11 (5): 2653-2668 [10.5194/amt-11-2653-2018] [Journal Article/Letter]
2017. "A Model and Satellite-Based Analysis of the Tropospheric Ozone Distribution in Clear Versus Convectively Cloudy Conditions.", Journal of Geophysical Research: Atmospheres, [10.1002/2017jd027015] [Journal Article/Letter]
2017. "A cloud-ozone data product from Aura OMI and MLS satellite measurements.", Atmospheric Measurement Techniques, 10 (11): 4067-4078 [10.5194/amt-10-4067-2017] [Journal Article/Letter]
2017. "Global atmospheric chemistry – which air matters.", Atmospheric Chemistry and Physics, 17 (14): 9081-9102 [10.5194/acp-17-9081-2017] [Journal Article/Letter]
2016. "Variability of O3 and NO2 profile shapes during DISCOVER-AQ: Implications for satellite observations and comparisons to model-simulated profiles.", Atmospheric Environment, 147 133-156 [10.1016/j.atmosenv.2016.09.068] [Journal Article/Letter]
2016. "The effect of future ambient air pollution on human premature mortality to 2100 using output from the ACCMIP model ensemble.", Atmos. Chem. Phys., 16 (15): 9847-9862 [10.5194/acp-16-9847-2016] [Journal Article/Letter]
2016. "Interpreting space-based trends in carbon monoxide with multiple models.", Atmos. Chem. Phys., 16 (11): 7285-7294 [10.5194/acp-16-7285-2016] [Journal Article/Letter]
2016. "The description and validation of the computationally Efficient CH4–CO–OH (ECCOHv1.01) chemistry module for 3-D model applications .", Geoscientific Model Development, 9 799-822 [doi:10.5194/gmd-9-799-2016] [Journal Article/Letter]
2015. "Implications of carbon monoxide bias for methane lifetime and atmospheric composition in chemistry climate models.", Atmospheric Chemistry and Physics, 15 11789–11805 [10.5194/acp-15-11789-2015] [Journal Article/Letter]
2015. "Trends and variability in surface ozone over the United States.", Journal of Geophysical Research: Atmospheres, 120 [10.1002/2014JD022784] [Journal Article/Letter]
2015. "Use of North American and European air quality networks to evaluate global chemistry-climate modeling of surface ozone.", Atmos. Chem. Phys., 15 10581-10596 [10.5194/acp-15-10581-2015] [Journal Article/Letter]
2014. "Multi-decadal aerosol variations from 1980 to 2009: a perspective from observations and a global model.", Atmos. Chem. Phys., 14 (7): 3657-3690 [10.5194/acp-14-3657-2014] [Journal Article/Letter]
2013. "Detection of carbon monoxide trends in the presence of interannual variability.", Journal of Geophysical Research-Atmospheres, 118 ( 21): 12257-122 [10.1002/2013JD020258] [Journal Article/Letter]
2013. "Evaluation of ACCMIP outgoing longwave radiation from tropospheric ozone using TES satellite observations.", Atmos. Chem. Phys., 13 (8): 4057-4072 [10.5194/acp-13-4057-2013] [Journal Article/Letter]
2013. "Three decades of global methane sources and sinks.", Nature Geosci, 6 (10): 813-823 [10.1038/ngeo1955] [Journal Article/Letter]
2013. "The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): overview and description of models, simulations and climate diagnostics.", Geosci. Model Dev., 6 (1): 179-206 [10.5194/gmd-6-179-2013] [Journal Article/Letter]
2013. "Preindustrial to present-day changes in tropospheric hydroxyl radical and methane lifetime from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP).", Atmos. Chem. Phys., 13 (10): 5277-5298 [10.5194/acp-13-5277-2013] [Journal Article/Letter]
2013. "Tropospheric ozone changes, radiative forcing and attribution to emissions in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP).", Atmos. Chem. Phys., 13 (6): 3063-3085 [10.5194/acp-13-3063-2013] [Journal Article/Letter]
2013. "Analysis of present day and future OH and methane lifetime in the ACCMIP simulations.", Atmos. Chem. Phys., 13 (5): 2563-2587 [10.5194/acp-13-2563-2013] [Journal Article/Letter]
2013. "Pre-industrial to end 21st century projections of tropospheric ozone from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP).", Atmos. Chem. Phys., 13 (4): 2063-2090 [10.5194/acp-13-2063-2013] [Journal Article/Letter]
2012. "Emission and transport of cesium-137 from boreal biomass burning in the summer of 2010.", JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 117 [10.1029/2011JD017382] [Journal Article/Letter]
2010. "Vertical transport of anthropogenic mercury in the ocean.", Global Biogeochem. Cycles, 24 GB4014 [10.1029/2009GB003728] [Journal Article/Letter]
2009. "Interannual variability of long-range transport as seen at the Mt. Bachelor Observatory.", Atmos. Chem. Phys., 9 557-572. [Journal Article/Letter]
2009. "Impact of mercury emissions from historic gold and silver mining: Global modeling.", Atmos. Environ., 43 2012-2017. [Journal Article/Letter]
2008. "Fate and Transport of Atmospheric Mercury from Asia.", Environ. Chem., 5 121 [10.1071/EN08010] [Journal Article/Letter]
2008. "Trans-Pacific transport of mercury.", J. Geophys. Res., 113 D15305 [10.1029/2007JD009428] [Journal Article/Letter]
2007. "Air -sea exchange in the global mercury cycle.", Global Biogeochemical Cycles, 21 GB1017 [10.1029/2006GB002766] [Journal Article/Letter]