Karen I Mohr

Karen I Mohr

  • SUPERVISORY AST, TECHNICAL MANAGEMENT
  • 301.614.6360 | 301.614.6297
  • NASA/GSFC
  • Mail Code: 610.8
  • Greenbelt , MD 20771
  • Employer: NASA
  • Education

    2000 Ph.D., Hydrology, University of Texas at Austin, Austin, Texas
    1995 M.S.,   Meteorology, Texas A&M University, College Station, Texas
    1987 B.S.,   Meteorology, Pennsylvania State University, State College, Pennsylvania
    1986 B.A.,   Physics, College of the Holy Cross, Worcester, Massachusetts

    Special Experience

    Numerical modeling and observation of land/atmosphere interaction, convective initiation, and organized convective systems using surface, upper air, remote sensing (radar, visible/IR, passive microwave), and reanalysis data and GIS. Special emphasis on the surface hydrology, weather, and short-term climate of arid regions (e.g., Southern Great Plains, West Africa, Andes).

    Professional Societies

    American Meteorological Society, 1990 - Present
    American Geophysical Union, 1996 - Present

    Positions/Employment

    9/2019 - Present

    Associate Director for Institutional Planning and Operations

    NASA, NASA-Goddard Space Flight Center, Greenbelt, MD
    2/2014 - 9/2019

    Associate Deputy Director for Atmospheres

    NASA-Goddard Space Flight Center, Greenbelt, MD
    2/2009 - 2/2014

    Research Meteorologist

    NASA-Goddard Space Flight Center, Greenbelt, MD
    8/2006 - 2/2009

    Associate Professor of Atmospheric Science

    University at Albany, SUNY, Albany, NY
    8/2000 - 8/2006

    Assistant Professor of Atmospheric Science

    University at Albany, SUNY, Albany, NY
    8/1996 - 8/2000

    Graduate Fellow

    Department of Geological Sciences, University of Texas at Austin, Austin, TX
    5/1993 - 6/1995

    Research Assistant

    Department of Meteorology, Texas A&M University, College Station, TX
    7/1991 - 5/1993

    Windplant Operations Meteorologist

    Kenetech, Inc., Livermore, CA
    5/1986 - 5/1991

    Aviation Meteorologist

    United States Air Force, CONUS and Pacific Air Forces

    Publications

    Refereed

    Zhou, Y., K. Nelson, K. I. Mohr, et al. G. J. Huffman, R. C. Levy, and M. Grecu. 2019. "A spatial‐temporal extreme precipitation database from GPM IMERG." Journal of Geophysical Research: Atmospheres, 2019JD030449 (In Press) [10.1029/2019jd030449]

    Nicholls, S. D., and K. I. Mohr. 2019. "An automated detection methodology for dry well-mixed layers." Journal of Atmospheric and Oceanic Technology, 36 (5): 761-779 [10.1175/jtech-d-18-0149.1]

    Tao, W.-K., J.-D. Chern, T. Iguchi, et al. S. E. Lang, M.-I. Lee, X. Li, A. M. Loftus, T. Matsui, K. I. Mohr, S. Nicholls, C. D. Peters-Lidard, D. Posselt, and G. Skofronick-Jackson. 2019. "Microphysics in Goddard multi-scale modeling systems: A Review." Current Trends in the Representation of Physical Processes in Weather and Climate Models, Singapore: 253-316, ISBN: 978-981-13-3395-8. [10.1007/978-981-13-3396-5_14]

    Dezfuli, A. K., C. M. Ichoku, G. J. Huffman, et al. K. I. Mohr, J. S. Selker, N. van de Giesen, R. Hochreutener, and F. O. Annor. 2017. "Validation of IMERG precipitation in Africa." Journal of Hydrometeorology, 18 (2017): 2817-2825 [10.1175/JHM-D-17-0139.1]

    Dezfuli, A. K., C. M. Ichoku, K. I. Mohr, and G. J. Huffman. 2017. "Precipitation characteristics in West and East Africa from satellite and in situ observations." Journal of Hydrometeorology, 18 (6): 1799-1805 [10.1175/jhm-d-17-0068.1]

    Nicholls, S. D., S. G. Decker, W.-K. Tao, et al. S. E. Lang, J. J. Shi, and K. I. Mohr. 2017. "Influence of bulk microphysics schemes upon Weather Research and Forecasting (WRF) version 3.6.1 nor'easter simulations." Geoscientific Model Development, 10 (2): 1033-1049 [10.5194/gmd-10-1033-2017]

    Kidd, C., T. Matsui, J.-D. Chern, et al. K. Mohr, C. Kummerow, and D. Randel. 2016. "Global precipitation estimates from cross-track passive microwave observations using a physically-based retrieval scheme." Journal of Hydrometeorology, 17 (1): 383–400 [10.1175/jhm-d-15-0051.1]

    Chern, J.-D., W.-K. Tao, S. E. Lang, et al. T. Matsui, J.-L. F. Li, K. I. Mohr, G. M. Skofronick-Jackson, and C. D. Peters-Lidard. 2015. "Performance of the Goddard multiscale modeling framework with Goddard ice microphysical schemes." Journal of Advances in Modeling Earth Systems, 8 (1): 66-95 [10.1002/2015ms000469]

    Tao, W.-K., S. E. Lang, X. Zeng, et al. X. Li, T. Matsui, K. I. Mohr, D. Posselt, J.-D. Chern, C. D. Peters-Lidard, P. M. Norris, I.-S. Kang, I. Choi, A. Hou, W. K. Lau, and Y.-M. Yang. 2014. "The Goddard Cumulus Ensemble model (GCE): Improvements and applications for studying precipitation processes." Atmospheric Research, 143: 392-424 [10.1016/j.atmosres.2014.03.005]

    Mohr, K. I., D. Slayback, and K. A. Yager. 2014. "Characteristics of precipitation features and annual rainfall during the TRMM era in the Central Andes." Journal of Climate, 27 (11): 3982-4001 [10.1175/JCLI-D-13-00592.1]

    Mohr, K., W. Tao, J. Chern, S. Kumar, and C. Peters-Lidard. 2013. "The NASA-Goddard Multi-scale Modeling Framework–Land Information System: Global land/atmosphere interaction with resolved convection." Environmental Modelling & Software, 39: 103-115 [10.1016/j.envsoft.2012.02.023]

    Herrmann, S., and K. I. Mohr. 2011. "A continental-scale classification of rainfall seasonality regimes in Africa based on gridded precipitation and land surface temperature products." Journal of Applied Meteorology and Climatology, 50 (12): 2504–2513 [10.1175/JAMC-D-11-024.1]

    Schrek, C., J. Molinari, and K. I. Mohr. 2011. "Attributing tropical cyclogenesis to equatorial waves in the Western North Pacific." Journal of the Atmospheric Sciences, 68 (2): 195-209 [10.1175/2010JAS3396.1]

    Nicholls, S., and K. I. Mohr. 2010. "An analysis of the environments of intense convective systems in West Africa in 2003." Monthly Weather Review, 138 (10): 3721-3739 [10.1175/2010MWR3321.1]

    Mohr, K. I., J. Molinari, and C. Thorncroft. 2009. "The interannual stability of cumulative frequency distributions for convective system size and intensity." Journal of Climate, 22 (19): 5218-5231 [10.1175/2009JCLI2940.1]

    Fan, J., R. Zhang, W.-K. Tao, and K. Mohr. 2008. "Effects of aerosol optical properties on deep convective clouds and radiative forcing." Journal of Geophysical Research: Atmospheres, 113: doi:101029/2007JD009257, D08209 [10.1029/2007JD009257]

    Alonge, C., K. I. Mohr, and W.-K. Tao. 2007. "Numerical studies of wet versus dry soil regimes in the West African Sahel." Journal of Hydrometeorology, 8 (1): 102-116 [10.1175/JHM559.1]

    Mohr, K. I., and C. Thorncroft. 2006. "Intense convective systems in West Africa and their relationship to the African easterly jet." Quarterly Journal of the Royal Meteorological Society, 132: 163-176 [10.1256/qj.05.55]

    Mohr, K. I. 2004. "Interannual, monthly and regional variability in the wet season diurnal cycle of precipitation in Sub-Saharan Africa." Journal of Climate, 17: 2441-2453 [10.1175/1520-0442(2004)017<2441:IMARVI>2.0.CO;2]

    Mohr, K. I., R. Baker, W.-K. Tao, and J. Famiglietti. 2003. "The sensitivity of West African convective line water budgets to land cover." Journal of Hydrometeorology, 4 (1): 62-76 [10.1175/1525-7541(2003)004<0062:TSOWAC>2.0.CO;2]

    Mohr, K. I., J. S. Famiglietti, and A. Boone. 2001. "The effect of sub-grid variability of soil moisture on the simulation of mesoscale watershed hydrology." Land Surface Hydrology, Meteorology, and Climate: Observations and Modeling, Washington D.C.: 161-176, ISBN: 0-87590-352-5. [10.1029/WS003P0161]

    Zolman, J., E. Zipser, and K. I. Mohr. 2000. "A comparison of tropical mesoscale convective systems in El Niño and La Niña." Journal of Climate, 13 (18): 3314-3326 [10.1175/1520-0442(2000)013<3314:ACOTMC>2.0.CO;2]

    Mohr, K. I., J. S. Famiglietti, A. Boone, and P. J. Starks. 2000. "Modeling soil moisture and surface flux variability with an untuned land surface scheme: A case study from the Southern Great Plains 1997 Hydrology Experiment." Journal of Hydrometeorology, 1 (2): 154-169 [10.1175/1525-7541(2000)001<0154:MSMASF>2.0.CO;2]

    Mohr, K. I., J. S. Famiglietti, and E. J. Zipser. 1999. "The contribution to tropical rainfall with respect to convective system type, size, and intensity estimated from the 85 GHz ice scattering signature." Journal of Applied Meteorology, 38: 596-606 [10.1175/1520-0450(1999)038<0596:TCTTRW>2.0.CO;2]

    Jenkins, G. S., K. I. Mohr, V. R. Morris, and O. Arino. 1997. "The role of convective processes over the Zaire-Congo Basin to the southern hemisphere ozone maximum." Journal of Geophysical Research: Atmospheres, 102: 18,963-18,980 [10.1029/97JD01018]

    Mohr, K. I., and E. J. Zipser. 1996. "Mesoscale convective systems defined by their 85 GHz ice scattering signature: Size and intensity comparison over tropical oceans and continents." Monthly Weather Review, 124: 2417-2437 [10.1175/1520-0493(1996)124<2417:MCSDBT>2.0.CO;2]

    Mohr, K., and E. J. Zipser. 1996. "Defining mesoscale convective systems by their 85-GHz ice-scattering signatures." Bulletin of the American Meteorological Society, 77 (6): 1179-1189 [10.1175/1520-0477(1996)077<1179:DMCSBT>2.0.CO;2 ]

    Mohr, K. I., E. R. Toracinta, E. J. Zipser, and R. E. Orville. 1996. "A comparison of WSR-88D reflectivities, SSM/I brightness temperatures, and lightning for mesoscale convective systems in Texas Part II: SSM/I brightness temperatures and lightning." Journal of Applied Meteorology, 35 (6): 919-931 [10.1175/1520-0450(1996)035<0919:ACOWRS>2.0.CO;2]

    Toracinta, E. R., K. I. Mohr, E. J. Zipser, and R. E. Orville. 1996. "A comparison of WSR-88D reflectivities, SSM/I brightness temperatures, and lightning for mesoscale convective systems in Texas Part I: Radar reflectivity and lightning." Journal of Applied Meteorology, 35 (6): 902-918 [10.1175/1520-0450(1996)035<0902:ACOWRS>2.0.CO;2]

    Publications

    Refereed

    Zhou, Y., K. Nelson, K. I. Mohr, et al. G. J. Huffman, R. C. Levy, and M. Grecu. 2019. "A spatial‐temporal extreme precipitation database from GPM IMERG." Journal of Geophysical Research: Atmospheres (In Press) 2019JD030449 [10.1029/2019jd030449]

    Nicholls, S. D., and K. I. Mohr. 2019. "An automated detection methodology for dry well-mixed layers." Journal of Atmospheric and Oceanic Technology 36 (5): 761-779 [10.1175/jtech-d-18-0149.1]

    Tao, W.-K., J.-D. Chern, T. Iguchi, et al. S. E. Lang, M.-I. Lee, X. Li, A. M. Loftus, T. Matsui, K. I. Mohr, S. Nicholls, C. D. Peters-Lidard, D. Posselt, and G. Skofronick-Jackson. 2019. "Microphysics in Goddard multi-scale modeling systems: A Review." Current Trends in the Representation of Physical Processes in Weather and Climate Models 253-316 [10.1007/978-981-13-3396-5_14]

    Dezfuli, A. K., C. M. Ichoku, G. J. Huffman, et al. K. I. Mohr, J. S. Selker, N. van de Giesen, R. Hochreutener, and F. O. Annor. 2017. "Validation of IMERG precipitation in Africa." Journal of Hydrometeorology 18 (2017): 2817-2825 [10.1175/JHM-D-17-0139.1]

    Dezfuli, A. K., C. M. Ichoku, K. I. Mohr, and G. J. Huffman. 2017. "Precipitation characteristics in West and East Africa from satellite and in situ observations." Journal of Hydrometeorology 18 (6): 1799-1805 [10.1175/jhm-d-17-0068.1]

    Nicholls, S. D., S. G. Decker, W.-K. Tao, et al. S. E. Lang, J. J. Shi, and K. I. Mohr. 2017. "Influence of bulk microphysics schemes upon Weather Research and Forecasting (WRF) version 3.6.1 nor'easter simulations." Geoscientific Model Development 10 (2): 1033-1049 [10.5194/gmd-10-1033-2017]

    Kidd, C., T. Matsui, J.-D. Chern, et al. K. Mohr, C. Kummerow, and D. Randel. 2016. "Global precipitation estimates from cross-track passive microwave observations using a physically-based retrieval scheme." Journal of Hydrometeorology 17 (1): 383–400 [10.1175/jhm-d-15-0051.1]

    Chern, J.-D., W.-K. Tao, S. E. Lang, et al. T. Matsui, J.-L. F. Li, K. I. Mohr, G. M. Skofronick-Jackson, and C. D. Peters-Lidard. 2015. "Performance of the Goddard multiscale modeling framework with Goddard ice microphysical schemes." Journal of Advances in Modeling Earth Systems 8 (1): 66-95 [10.1002/2015ms000469]

    Tao, W.-K., S. E. Lang, X. Zeng, et al. X. Li, T. Matsui, K. I. Mohr, D. Posselt, J.-D. Chern, C. D. Peters-Lidard, P. M. Norris, I.-S. Kang, I. Choi, A. Hou, W. K. Lau, and Y.-M. Yang. 2014. "The Goddard Cumulus Ensemble model (GCE): Improvements and applications for studying precipitation processes." Atmospheric Research 143 392-424 [10.1016/j.atmosres.2014.03.005]

    Mohr, K. I., D. Slayback, and K. A. Yager. 2014. "Characteristics of precipitation features and annual rainfall during the TRMM era in the Central Andes." Journal of Climate 27 (11): 3982-4001 [10.1175/JCLI-D-13-00592.1]

    Mohr, K., W. Tao, J. Chern, S. Kumar, and C. Peters-Lidard. 2013. "The NASA-Goddard Multi-scale Modeling Framework–Land Information System: Global land/atmosphere interaction with resolved convection." Environmental Modelling & Software 39 103-115 [10.1016/j.envsoft.2012.02.023]

    Herrmann, S., and K. I. Mohr. 2011. "A continental-scale classification of rainfall seasonality regimes in Africa based on gridded precipitation and land surface temperature products." Journal of Applied Meteorology and Climatology 50 (12): 2504–2513 [10.1175/JAMC-D-11-024.1]

    Schrek, C., J. Molinari, and K. I. Mohr. 2011. "Attributing tropical cyclogenesis to equatorial waves in the Western North Pacific." Journal of the Atmospheric Sciences 68 (2): 195-209 [10.1175/2010JAS3396.1]

    Nicholls, S., and K. I. Mohr. 2010. "An analysis of the environments of intense convective systems in West Africa in 2003." Monthly Weather Review 138 (10): 3721-3739 [10.1175/2010MWR3321.1]

    Mohr, K. I., J. Molinari, and C. Thorncroft. 2009. "The interannual stability of cumulative frequency distributions for convective system size and intensity." Journal of Climate 22 (19): 5218-5231 [10.1175/2009JCLI2940.1]

    Fan, J., R. Zhang, W.-K. Tao, and K. Mohr. 2008. "Effects of aerosol optical properties on deep convective clouds and radiative forcing." Journal of Geophysical Research: Atmospheres 113 D08209 [10.1029/2007JD009257]

    Alonge, C., K. I. Mohr, and W.-K. Tao. 2007. "Numerical studies of wet versus dry soil regimes in the West African Sahel." Journal of Hydrometeorology 8 (1): 102-116 [10.1175/JHM559.1]

    Mohr, K. I., and C. Thorncroft. 2006. "Intense convective systems in West Africa and their relationship to the African easterly jet." Quarterly Journal of the Royal Meteorological Society 132 163-176 [10.1256/qj.05.55]

    Mohr, K. I. 2004. "Interannual, monthly and regional variability in the wet season diurnal cycle of precipitation in Sub-Saharan Africa." Journal of Climate 17 2441-2453 [10.1175/1520-0442(2004)017<2441:IMARVI>2.0.CO;2]

    Mohr, K. I., R. Baker, W.-K. Tao, and J. Famiglietti. 2003. "The sensitivity of West African convective line water budgets to land cover." Journal of Hydrometeorology 4 (1): 62-76 [10.1175/1525-7541(2003)004<0062:TSOWAC>2.0.CO;2]

    Mohr, K. I., J. S. Famiglietti, and A. Boone. 2001. "The effect of sub-grid variability of soil moisture on the simulation of mesoscale watershed hydrology." Land Surface Hydrology, Meteorology, and Climate: Observations and Modeling 161-176 [10.1029/WS003P0161]

    Zolman, J., E. Zipser, and K. I. Mohr. 2000. "A comparison of tropical mesoscale convective systems in El Niño and La Niña." Journal of Climate 13 (18): 3314-3326 [10.1175/1520-0442(2000)013<3314:ACOTMC>2.0.CO;2]

    Mohr, K. I., J. S. Famiglietti, A. Boone, and P. J. Starks. 2000. "Modeling soil moisture and surface flux variability with an untuned land surface scheme: A case study from the Southern Great Plains 1997 Hydrology Experiment." Journal of Hydrometeorology 1 (2): 154-169 [10.1175/1525-7541(2000)001<0154:MSMASF>2.0.CO;2]

    Mohr, K. I., J. S. Famiglietti, and E. J. Zipser. 1999. "The contribution to tropical rainfall with respect to convective system type, size, and intensity estimated from the 85 GHz ice scattering signature." Journal of Applied Meteorology 38 596-606 [10.1175/1520-0450(1999)038<0596:TCTTRW>2.0.CO;2]

    Jenkins, G. S., K. I. Mohr, V. R. Morris, and O. Arino. 1997. "The role of convective processes over the Zaire-Congo Basin to the southern hemisphere ozone maximum." Journal of Geophysical Research: Atmospheres 102 18,963-18,980 [10.1029/97JD01018]

    Mohr, K. I., and E. J. Zipser. 1996. "Mesoscale convective systems defined by their 85 GHz ice scattering signature: Size and intensity comparison over tropical oceans and continents." Monthly Weather Review 124 2417-2437 [10.1175/1520-0493(1996)124<2417:MCSDBT>2.0.CO;2]

    Mohr, K., and E. J. Zipser. 1996. "Defining mesoscale convective systems by their 85-GHz ice-scattering signatures." Bulletin of the American Meteorological Society 77 (6): 1179-1189 [10.1175/1520-0477(1996)077<1179:DMCSBT>2.0.CO;2 ]

    Mohr, K. I., E. R. Toracinta, E. J. Zipser, and R. E. Orville. 1996. "A comparison of WSR-88D reflectivities, SSM/I brightness temperatures, and lightning for mesoscale convective systems in Texas Part II: SSM/I brightness temperatures and lightning." Journal of Applied Meteorology 35 (6): 919-931 [10.1175/1520-0450(1996)035<0919:ACOWRS>2.0.CO;2]

    Toracinta, E. R., K. I. Mohr, E. J. Zipser, and R. E. Orville. 1996. "A comparison of WSR-88D reflectivities, SSM/I brightness temperatures, and lightning for mesoscale convective systems in Texas Part I: Radar reflectivity and lightning." Journal of Applied Meteorology 35 (6): 902-918 [10.1175/1520-0450(1996)035<0902:ACOWRS>2.0.CO;2]

                                                                                                                                                                                            
    NASA Logo, National Aeronautics and Space Administration