Sarah Ringerud received her B.S. in Mathematics and Atmospheric and Oceanic Sciences from the University of Wisconsin-Madison, and the M.S. and Ph.D from Colorado State University. Research interests include remote sensing of the global hydrologic cycle, atmospheric radiation, radiative transfer modeling, and surface emissivity retrieval and modeling. Recent research is focused on precipitation algorithm development for satellite passive microwave sensors as part of the Global Precipitation Measurement (GPM) algorithm teams. Sarah currently specializes in retrievals over land and understanding of dynamic surface conditions from a radiometric perspective.
Sarah Elizabeth Ringerud
(RESEARCH AST, METEOROLOGICAL STUDIES)
Email: | sarah.e.ringerud@nasa.gov |
Phone: | 301.614.5496 |
Org Code: | 612 |
Address: |
NASA/GSFC Mail Code 612 Greenbelt, MD 20771 |
Employer: |
Brief Bio
Current Projects
Global Precipitation Measurement (GPM)
Precipitation
Algorithm development with focus on passive microwave retrievals over land
Atmospheric Observing System (AOS)
Remote Sensing
Early radiometer algorithm development
Positions/Employment
Research Meteorologist, AST
NASA - GSFC
January 2023 - Present
Assistant Research Scientist
University of Maryland - NASA GSFC
July 2019 - December 2022
Postdoctoral Researcher
University of Maryland - NASA GSFC
July 2017 - June 2019
Postdoctoral Fellow
NASA Postdoctoral Program (NPP) - NASA GSFC
July 2015 - June 2017
Education
PhD. Atmospheric Science; Emphasis: Remote Sensing, Colorado State University, Fort Collins, Colorado, 5/2015
M.S. Atmospheric Science; Emphasis: Remote Sensing, Colorado State University, Fort Collins, Colorado, 5/2006
B.S. Atmospheric and Oceanic Sciences, Mathematics, University of Wisconsin - Madison, Madison, WI, 2002
Professional Societies
Phi Beta Kappa
member
2002 - Present
American Geophysical Union (AGU)
member
2012 - Present
American Meteorological Society
member
2000 - Present
IEEE Geoscience and Remote Sensing Society
member
2012 - Present
Awards
-UMD-ESSIC Best Paper of the Year Award 2021:
Ringerud, S., C. Peters-Lidard, S. J. Munchak, Y. You, 2021: Applications of Dynamic Land Surface Information for Passive Microwave Precipitation Retrieval, J. Atmos. And Ocean. Tech., 38(2), 167-183. DOI: 10.1175/JTECH-D-20-0048.1
- IEEE Geoscience and Remote Sensing Society 2020 Transactions Prize Paper Award:
Munchak, S.J., S. Ringerud, L. Brucker, Y. You, I. de Gelis and C. Prigent, 2020: An Active-Passive Microwave Land Surface Database From GPM, IEEE Transactions on Geoscience and Remote Sensing, 58, 6224-6242. DOI: 10.1109/TGRS.2020.2975477
-NASA GSFC Mesoscale Atmospheric Processes Lab 2017 Exceptional Scientific Achievement Award
- NASA Group Achievement Award, Global Precipitation Measurement Mission, Post Launch Team 2015
- NASA Postdoctoral Program (NPP) Fellowship 2015
- Certificate of Excellence for Presentation, GEWEX 7th International Conference on the Global Energy and Water Cycle, July 2014
- Alumni Award for Outstanding Paper by a PhD Student (CSU Atmospheric Science Department) May 2014
- NASA Earth and Space Sciences Fellowship (NESSF) 2013
- Center for Earth Atmosphere Studies Fellowship, (a cooperative fellowship linking Colorado State University and NASA’s Goddard Space Flight Center) 2009
- Hilldale Fellowship for Undergraduate Research, 2001
Publications
Refereed
2022. "Vulnerability of Passive Microwave Snowfall Retrievals to Physical Properties of Snowpack: A Perspective from Dense Media Radiative Transfer Theory." IEEE Transactions on Geoscience and Remote Sensing 1-1 [10.1109/tgrs.2022.3184530] [Journal Article/Letter]
2021. "Improving Cross-track Scanning Radiometers’ Precipitation Retrieval over Ocean by Morphing." Journal of Hydrometeorology 22 (9): 2393-2406 [10.1175/jhm-d-21-0038.1] [Journal Article/Letter]
2021. "Applications of a CloudSat-TRMM and CloudSat-GPM Satellite Coincidence Dataset." Remote Sensing 13 (12): 2264 [10.3390/rs13122264] [Journal Article/Letter]
2021. "Precipitation Retrievals from Passive Microwave Cross-Track Sensors: The Precipitation Retrieval and Profiling Scheme." Remote Sensing 13 (5): 947 [10.3390/rs13050947] [Journal Article/Letter]
2021. "Extreme Lake-Effect Snow from a GPM Microwave Imager Perspective: Observational Analysis and Precipitation Retrieval Evaluation." Journal of Atmospheric and Oceanic Technology 38 (2): 293-311 [10.1175/jtech-d-20-0064.1] [Journal Article/Letter]
2021. "Applications of Dynamic Land Surface Information for Passive Microwave Precipitation Retrieval." Journal of Atmospheric and Oceanic Technology 38 (2): 167-180 [10.1175/jtech-d-20-0048.1] [Journal Article/Letter]
2020. "An Active–Passive Microwave Land Surface Database From GPM." IEEE Transactions on Geoscience and Remote Sensing 58 (9): 6224-6242 [10.1109/tgrs.2020.2975477] [Journal Article/Letter]
2020. "Raindrop Signature from Microwave Radiometer Over Deserts." Geophysical Research Letters 47 (16): [10.1029/2020gl088656] [Journal Article/Letter]
2020. "The Goddard Profiling (GPROF) Precipitation Retrieval Algorithm." Satellite Precipitation Measurement 141-152 [10.1007/978-3-030-24568-9_8] [Article in Book]
2018. "The Instantaneous Retrieval of Precipitation Over Land by Temporal Variation at 19 GHz." Journal of Geophysical Research: Atmospheres 123 (17): 9279-9295 [10.1029/2017jd027596] [Journal Article/Letter]
2017. "Improving Overland Precipitation Retrieval with Brightness Temperature Temporal Variation." Journal of Hydrometeorology 18 (9): 2355-2383 [10.1175/jhm-d-17-0050.1] [Journal Article/Letter]
2016. "The GPM Combined Algorithm." Journal of Atmospheric and Oceanic Technology 33 (10): 2225-2245 [10.1175/jtech-d-16-0019.1] [Journal Article/Letter]
2016. "Precipitation retrievals from passive microwave cross-track sounding instruments." 2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) [10.1109/microrad.2016.7530515] [Proceedings]
2015. "An examination of methods for estimating land surface microwave emissivity." J. Geophys. Res. Atmos. 120 11,114-11,128 [10.1002/2015JD023582] [Journal Article/Letter]
2015. "A Semi-Empirical Model for Computing Land Surface Emissivity in the Microwave Region." IEEE Transactions on Geoscience and Remote Sensing 53 (4): 1935-1946 [Full Text] [10.1109/TGRS.2014.2351232] [Journal Article/Letter]
2015. "Calibration to improve forward model simulation of microwave emissivity at GPM frequencies over the U.S. Southern Great Plains." IEEE Trans. Geophys. Remote Sens. 54 (2): [10.1109/TGRS.2015.2474120] [Journal Article/Letter]
2014. "A Comparison of Microwave Window Channel Retrieved and Forward-Modeled Emissivities Over the US Southern Great Plains." Geoscience and Remote Sensing, IEEE Transactions on 52 (5): 2395 - 2412 [10.1109/TGRS.2013.2260759] [Journal Article/Letter]
2013. "An Evaluation of Microwave Land Surface Emissivities Over the Continental United States to Benefit GPM-Era Precipitation Algorithms." IEEE Trans. Geosci. Remote Sensing 51 (1): 378-398 [10.1109/TGRS.2012.2199121] [Journal Article/Letter]
Non-Refereed
2014. "Land surface microwave emissivity dynamics: Observations, analysis and modeling ." Microwave Radiometry and Remote Sensing of the Environment (MicroRad), 2014 13th Specialist Meeting on 99 - 102 [10.1109/MicroRad.2014.6878917] [Proceedings]