Sciences and Exploration Directorate

Rachael Ann Kroodsma

(RSCH AST, EARTH SCIENCES REMOTE SENS)

 rachael.a.kroodsma@nasa.gov

 301.614.5242

Org Code: 612

NASA/GSFC
Mail Code: 612
Greenbelt, MD 20771

Employer: NASA

Brief Bio


Dr. Rachael A. Kroodsma is a Research Physical Scientist at NASA Goddard Space Flight Center with the Mesoscale Atmospheric Processes Laboratory (Code 612). Her primary responsibilities include leading the Global Precipitation Measurement (GPM) inter-calibration working group (XCAL) and serving as instrument scientist for the airborne microwave radiometers CoSMIR and CoSSIR (Conical Scanning Millimeter-wave Imaging Radiometer and Configurable Scanning Submillimeter-wave Instrument/Radiometer).

Current Projects


GPM XCAL

Remote Sensing

The GPM XCAL team is responsible for delivering the intercalibration tables for the GPM constellation microwave radiometers to create the Level 1C dataset. The XCAL team works on developing intercalibration techniques and monitoring the calibration/stability of the current sensors in the constellation to ensure a quality precipitation product.


CoSMIR and CoSSIR

Remote Sensing

The GSFC airborne radiometer suite of CoSMIR and CoSSIR together provide measurements from 50 to 684 GHz. CoSMIR has frequencies from 50 to 183 GHz and has flown in multiple field campaigns on the NASA DC-8 and ER-2 aircraft, first providing SSMIS calibration/validation and then participating in four GPM ground validation campaigns. CoSMIR is currently part of the multi-year IMPACTS campaign to measure snowfall on the East Coast. CoSSIR is currently being upgraded to have all dual-polarized channels from 170 to 684 and is planned to fly in the 3rd year of the IMPACTS campaign in 2023. CoSSIR is well positioned to provide validation for upcoming spaceborne missions that include a submillimeter-wave radiometer (e.g. ICI and AOS).

Positions/Employment


Research Physical Scientist

NASA Goddard Space Flight Center - Greenbelt, MD

October 2023 - Present


Assistant Research Scientist

University of Maryland - College Park, MD

April 2018 - October 2023


Post-Doctoral Associate

University of Maryland - College Park, MD

February 2014 - April 2018

Education


Ph.D. in Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, 2014

Dissertation: "Microwave Radiometer Inter-Calibration: Algorithm Development and Application"

M.S.E. in Electrical Engineering, University of Michigan, Ann Arbor, 2013

B.S.E. in Earth Systems Science and Engineering, University of Michigan, Ann Arbor, 2009

Professional Societies


IEEE

2010 - Present

Awards


610AT Field Campaign Support Award, 2020

NASA Group Achievement Award, 2015

NASA RHG Exceptional Achievement for Science Team Award, 2015

NASA Graduate Student Researchers Program (GSRP) Fellowship, 2010

University of Michigan Rackham Merit Fellowship, 2009

Publications


Refereed

Gambacorta, A., J. Piepmeier, M. Stephen, et al. J. Santanello, J. Blaisdell, I. Moradi, W. McCarty, R. Rosenberg, A. Kotsakis, J. MacKinnon, F. Gambini, P. Mohammed, R. Kroodsma, I. Adams, and P. Racette. 2023. Advancing Atmospheric Thermodynamic Sounding from Space using Hyperspectral Microwave Measurements IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 1-16 [10.1109/jstars.2023.3269697]

Kroodsma, R. A., W. Berg, and T. T. Wilheit. 2022. Special Sensor Microwave Imager/Sounder Updates for the Global Precipitation Measurement V07 Data Suite IEEE Transactions on Geoscience and Remote Sensing 60 1-11 [10.1109/tgrs.2022.3162529]

McMurdie, L. A., G. M. Heymsfield, J. E. Yorks, et al. S. A. Braun, G. Skofronick-Jackson, R. M. Rauber, S. Yuter, B. Colle, G. M. McFarquhar, M. Poellot, D. R. Novak, T. J. Lang, R. Kroodsma, M. McLinden, M. Oue, P. Kollias, M. R. Kumjian, S. J. Greybush, A. J. Heymsfield, J. A. Finlon, V. L. McDonald, and S. Nicholls. 2022. Chasing Snowstorms: The Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) Campaign Bulletin of the American Meteorological Society [10.1175/bams-d-20-0246.1]

You, Y., V. Petkovic, J. Tan, et al. R. Kroodsma, W. Berg, C. Kidd, and C. Peters-Lidard. 2020. Evaluation of V05 Precipitation Estimates from GPM Constellation Radiometers Using KuPR as the Reference Journal of Hydrometeorology 21 (4): 705-728 [10.1175/jhm-d-19-0144.1]

Kroodsma, R. A., M. A. Fritts, J. F. Lucey, et al. M. R. Schwaller, T. J. Ames, C. M. Cooke, and L. M. Hilliard. 2019. CoSMIR Performance During the GPM OLYMPEX Campaign IEEE Transactions on Geoscience and Remote Sensing 57 (9): 6397-6407 [10.1109/tgrs.2019.2906039]

Berg, W., R. Kroodsma, C. Kummerow, and D. McKague. 2018. Fundamental Climate Data Records of Microwave Brightness Temperatures Remote Sensing 10 (8): 1306 [10.3390/rs10081306]

Kroodsma, R., S. Bilanow, and D. McKague. 2018. TRMM Microwave Imager (TMI) Alignment and Along-Scan Bias Corrections Journal of Atmospheric and Oceanic Technology 35 (7): 1457-1470 [10.1175/jtech-d-17-0221.1]

Kroodsma, R. A., D. S. McKague, and C. S. Ruf. 2017. Vicarious Cold Calibration for Conical Scanning Microwave Imagers IEEE Transactions on Geoscience and Remote Sensing 55 (2): 816-827 [10.1109/tgrs.2016.2615552]

Berg, W., S. Bilanow, R. Chen, et al. S. Datta, D. Draper, H. Ebrahimi, S. Farrar, W. L. Jones, R. Kroodsma, D. McKague, V. Payne, J. Wang, T. Wilheit, and J. X. Yang. 2016. Intercalibration of the GPM Microwave Radiometer Constellation Journal of Atmospheric and Oceanic Technology 33 (12): 2639-2654 [10.1175/jtech-d-16-0100.1]

Wilheit, T., W. Berg, H. Ebrahimi, et al. R. Kroodsma, D. McKague, V. Payne, and J. Wang. 2015. Intercalibrating the GPM constellation using the GPM Microwave Imager (GMI) 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) [10.1109/igarss.2015.7326996]

Kroodsma, R. A., D. S. McKague, and C. S. Ruf. 2013. Extension of Vicarious Cold Calibration to 85–92 GHz for Spaceborne Microwave Radiometers IEEE Transactions on Geoscience and Remote Sensing 51 (9): 4743-4751 [10.1109/tgrs.2013.2267152]

Kroodsma, R., D. McKague, and C. Ruf. 2013. Effect of microwave radiometer inter-calibration on rainfall accumulation for the global precipitation measurement mission 2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS [10.1109/igarss.2013.6721368]

Kroodsma, R., D. McKague, and C. Ruf. 2012. Satellite attitude analysis using the vicarious cold calibration method for microwave radiometers 2012 IEEE International Geoscience and Remote Sensing Symposium [10.1109/igarss.2012.6350804]

Kroodsma, R. A., D. S. McKague, and C. S. Ruf. 2012. Inter-Calibration of Microwave Radiometers Using the Vicarious Cold Calibration Double Difference Method IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 5 (3): 1006-1013 [10.1109/jstars.2012.2195773]

Wilheit, T., W. Berg, L. Jones, et al. R. Kroodsma, D. McKague, C. Ruf, and M. Sapiano. 2011. A Consensus Calibration based on TMI and Windsat 2011 IEEE International Geoscience and Remote Sensing Symposium [10.1109/igarss.2011.6049745]