Ryan J Kramer

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Ryan J Kramer

  • ASSISTANT RESEARCH SCIENTIST
  • 301.614.5450
  • NASA/GSFC
  • Mail Code: 613
  • Greenbelt , MD 20771
  • Employer: UNIVERSITY OF MARYLAND BALTIMORE COUNTY
  • Brief Bio

    Dr. Ryan Kramer is an Assistant Research Scientist with the UMBC Joint Center for Earth Systems Technology, working in the Climate and Radiation Lab (Code 613) at NASA Goddard Space Flight Center. Using climate models and satellite observations, he conducts research on radiative forcings and feedbacks, land-atmosphere interactions and the global hydrological cycle. He arrived at GSFC in 2019 after completing his PhD at the University of Miami. You can find further details about his work on Google Scholar and on ResearchGate.

    Positions/Employment

    1/2021 - Present

    Assistant Research Scientist

    UMBC Joint Center for Earth Systems Technology, NASA Goddard Space Flight Center
    1/2019 - 1/2021

    NASA Postdoctoral Program Fellow

    Universities Space Research Association, NASA Goddard Space Flight Center

    Education

    Ph.D., Meteorology and Physical Oceanography, 2018, University of Miami

    B.S., Meteorology, 2013, Pennsylvania State University

     

     

    Professional Societies

    American Meteorological Society, 2009 - Present
    Student Conference Planning Committee Member (2013-2018); Board of Early Career Professionals Student Liaison (2016-2017); AMS Speed Networking Event Organizer (2018-Present)
    American Geophysical Union, 2014 - Present

    Publications

    Refereed

    Kramer, R. J., H. He, B. J. Soden, et al. L. Oreopoulos, G. Myhre, P. M. Forster, and C. J. Smith. 2021. "Observational evidence of increasing global radiative forcing." Geophysical Research Letters, 48 (7): e2020GL091585 [10.1029/2020gl091585]

    Thornhill, G. D., W. J. Collins, R. J. Kramer, et al. D. Olivié, R. B. Skeie, F. M. O'Connor, N. L. Abraham, R. Checa-Garcia, S. E. Bauer, M. Deushi, L. K. Emmons, P. M. Forster, L. W. Horowitz, B. Johnson, J. Keeble, J.-F. Lamarque, M. Michou, M. J. Mills, J. P. Mulcahy, G. Myhre, P. Nabat, V. Naik, N. Oshima, M. Schulz, C. J. Smith, T. Takemura, S. Tilmes, T. Wu, G. Zeng, and J. Zhang. 2021. "Effective radiative forcing from emissions of reactive gases and aerosols – a multi-model comparison." Atmospheric Chemistry and Physics, 21 (2): 853-874 [10.5194/acp-21-853-2021]

    Hodnebrog, Ø., G. Myhre, R. J. Kramer, et al. K. P. Shine, T. Andrews, G. Faluvegi, M. Kasoar, A. Kirkevåg, J.-F. Lamarque, J. Mülmenstädt, D. Olivié, B. H. Samset, D. Shindell, C. J. Smith, T. Takemura, and A. Voulgarakis. 2020. "The effect of rapid adjustments to halocarbons and N2O on radiative forcing." npj Climate and Atmospheric Science, 3 (1): 43 [10.1038/s41612-020-00150-x]

    Smith, C. J., R. J. Kramer, and A. Sima. 2020. "The HadGEM3-GA7.1 radiative kernel: the importance of a well-resolved stratosphere." Earth System Science Data, 12 (3): 2157-2168 [10.5194/essd-12-2157-2020]

    Bony, S., A. Semie, R. J. Kramer, et al. B. Soden, A. M. Tompkins, and K. A. Emanuel. 2020. "Observed Modulation of the Tropical Radiation Budget by Deep Convective Organization and Lower‐Tropospheric Stability." AGU Advances, 1 (3): [10.1029/2019av000155]

    Skeie, R. B., G. Myhre, Ø. Hodnebrog, et al. P. J. Cameron-Smith, M. Deushi, M. I. Hegglin, L. W. Horowitz, R. J. Kramer, M. Michou, M. J. Mills, D. J. Olivié, F. M. Connor, D. Paynter, B. H. Samset, A. Sellar, D. Shindell, T. Takemura, S. Tilmes, and T. Wu. 2020. "Historical total ozone radiative forcing derived from CMIP6 simulations." npj Climate and Atmospheric Science, 3 (1): 32 [10.1038/s41612-020-00131-0]

    Smith, C. J., R. J. Kramer, G. Myhre, et al. K. Alterskjær, W. Collins, A. Sima, O. Boucher, J.-L. Dufresne, P. Nabat, M. Michou, S. Yukimoto, J. Cole, D. Paynter, H. Shiogama, F. M. O'Connor, E. Robertson, A. Wiltshire, T. Andrews, C. Hannay, R. Miller, L. Nazarenko, A. Kirkevåg, D. Olivié, S. Fiedler, A. Lewinschal, C. Mackallah, M. Dix, R. Pincus, and P. M. Forster. 2020. "Effective radiative forcing and adjustments in CMIP6 models." Atmospheric Chemistry and Physics, 20 (16): 9591-9618 [10.5194/acp-20-9591-2020]

    Kaushik, A., J. Graham, K. Dorheim, et al. R. Kramer, J. Wang, and B. Byrne. 2020. "The Future of the Carbon Cycle in a Changing Climate." Eos, 101: [10.1029/2020eo140276]

    Zhang, B., R. J. Kramer, and B. J. Soden. 2019. "Radiative Feedbacks Associated with the Madden-Julian Oscillation." Journal of Climate, 32 (20): 7055-7065 [10.1175/jcli-d-19-0144.1]

    Kramer, R. J., A. V. Matus, B. J. Soden, and T. S. L'Ecuyer. 2019. "Observation‐Based Radiative Kernels From CloudSat/CALIPSO." Journal of Geophysical Research: Atmospheres, 124: 5431– 5444 [10.1029/2018jd029021]

    Kramer, R. J., B. J. Soden, and A. G. Pendergrass. 2019. "Evaluating climate model simulations of the radiative forcing and radiative response at the Earth’s surface." Journal of Climate, 32: 4089-4102 [10.1175/jcli-d-18-0137.1]

    Smith, C. J., R. J. Kramer, G. Myhre, et al. P. M. Forster, B. J. Soden, T. Andrews, O. Boucher, G. Faluvegi, D. Fläschner, Ø. Hodnebrog, M. Kasoar, V. Kharin, A. Kirkevåg, J.-F. Lamarque, J. Mülmenstädt, D. Olivié, T. Richardson, B. H. Samset, D. Shindell, P. Stier, T. Takemura, A. Voulgarakis, and D. Watson-Parris. 2018. "Understanding Rapid Adjustments to Diverse Forcing Agents." Geophysical Research Letters, 45 (21): 12,023-12,031 [10.1029/2018gl079826]

    Myhre, G., R. J. Kramer, C. J. Smith, et al. Ø. Hodnebrog, P. Forster, B. J. Soden, B. H. Samset, C. W. Stjern, T. Andrews, O. Boucher, G. Faluvegi, D. Fläschner, M. Kasoar, A. Kirkevåg, J.-F. Lamarque, D. Olivié, T. Richardson, D. Shindell, P. Stier, T. Takemura, A. Voulgarakis, and D. Watson-Parris. 2018. "Quantifying the Importance of Rapid Adjustments for Global Precipitation Changes." Geophysical Research Letters, 45 (20): 11,399-11,405 [10.1029/2018gl079474]

    Kramer, R. J., and B. J. Soden. 2016. "The Sensitivity of the Hydrological Cycle to Internal Climate Variability versus Anthropogenic Climate Change." Journal of Climate, 29 (10): 3661-3673 [10.1175/jcli-d-15-0408.1]

    Kramer, R. J., L. Bounoua, P. Zhang, et al. R. E. Wolfe, T. G. Huntington, M. L. Imhoff, K. J. Thome, and G. I. Noyce. 2015. "Evapotranspiration trends over the Eastern United States during the 20th Century." Hydrology, 2 (2): 93-111 [10.3390/hydrology2020093]

    Brief Bio

    Dr. Ryan Kramer is an Assistant Research Scientist with the UMBC Joint Center for Earth Systems Technology, working in the Climate and Radiation Lab (Code 613) at NASA Goddard Space Flight Center. Using climate models and satellite observations, he conducts research on radiative forcings and feedbacks, land-atmosphere interactions and the global hydrological cycle. He arrived at GSFC in 2019 after completing his PhD at the University of Miami. You can find further details about his work on Google Scholar and on ResearchGate.

    Publications

    Refereed

    Kramer, R. J., H. He, B. J. Soden, et al. L. Oreopoulos, G. Myhre, P. M. Forster, and C. J. Smith. 2021. "Observational evidence of increasing global radiative forcing." Geophysical Research Letters 48 (7): e2020GL091585 [10.1029/2020gl091585]

    Thornhill, G. D., W. J. Collins, R. J. Kramer, et al. D. Olivié, R. B. Skeie, F. M. O'Connor, N. L. Abraham, R. Checa-Garcia, S. E. Bauer, M. Deushi, L. K. Emmons, P. M. Forster, L. W. Horowitz, B. Johnson, J. Keeble, J.-F. Lamarque, M. Michou, M. J. Mills, J. P. Mulcahy, G. Myhre, P. Nabat, V. Naik, N. Oshima, M. Schulz, C. J. Smith, T. Takemura, S. Tilmes, T. Wu, G. Zeng, and J. Zhang. 2021. "Effective radiative forcing from emissions of reactive gases and aerosols – a multi-model comparison." Atmospheric Chemistry and Physics 21 (2): 853-874 [10.5194/acp-21-853-2021]

    Hodnebrog, Ø., G. Myhre, R. J. Kramer, et al. K. P. Shine, T. Andrews, G. Faluvegi, M. Kasoar, A. Kirkevåg, J.-F. Lamarque, J. Mülmenstädt, D. Olivié, B. H. Samset, D. Shindell, C. J. Smith, T. Takemura, and A. Voulgarakis. 2020. "The effect of rapid adjustments to halocarbons and N2O on radiative forcing." npj Climate and Atmospheric Science 3 (1): 43 [10.1038/s41612-020-00150-x]

    Smith, C. J., R. J. Kramer, and A. Sima. 2020. "The HadGEM3-GA7.1 radiative kernel: the importance of a well-resolved stratosphere." Earth System Science Data 12 (3): 2157-2168 [10.5194/essd-12-2157-2020]

    Bony, S., A. Semie, R. J. Kramer, et al. B. Soden, A. M. Tompkins, and K. A. Emanuel. 2020. "Observed Modulation of the Tropical Radiation Budget by Deep Convective Organization and Lower‐Tropospheric Stability." AGU Advances 1 (3): [10.1029/2019av000155]

    Skeie, R. B., G. Myhre, Ø. Hodnebrog, et al. P. J. Cameron-Smith, M. Deushi, M. I. Hegglin, L. W. Horowitz, R. J. Kramer, M. Michou, M. J. Mills, D. J. Olivié, F. M. Connor, D. Paynter, B. H. Samset, A. Sellar, D. Shindell, T. Takemura, S. Tilmes, and T. Wu. 2020. "Historical total ozone radiative forcing derived from CMIP6 simulations." npj Climate and Atmospheric Science 3 (1): 32 [10.1038/s41612-020-00131-0]

    Smith, C. J., R. J. Kramer, G. Myhre, et al. K. Alterskjær, W. Collins, A. Sima, O. Boucher, J.-L. Dufresne, P. Nabat, M. Michou, S. Yukimoto, J. Cole, D. Paynter, H. Shiogama, F. M. O'Connor, E. Robertson, A. Wiltshire, T. Andrews, C. Hannay, R. Miller, L. Nazarenko, A. Kirkevåg, D. Olivié, S. Fiedler, A. Lewinschal, C. Mackallah, M. Dix, R. Pincus, and P. M. Forster. 2020. "Effective radiative forcing and adjustments in CMIP6 models." Atmospheric Chemistry and Physics 20 (16): 9591-9618 [10.5194/acp-20-9591-2020]

    Kaushik, A., J. Graham, K. Dorheim, et al. R. Kramer, J. Wang, and B. Byrne. 2020. "The Future of the Carbon Cycle in a Changing Climate." Eos 101 [10.1029/2020eo140276]

    Zhang, B., R. J. Kramer, and B. J. Soden. 2019. "Radiative Feedbacks Associated with the Madden-Julian Oscillation." Journal of Climate 32 (20): 7055-7065 [10.1175/jcli-d-19-0144.1]

    Kramer, R. J., A. V. Matus, B. J. Soden, and T. S. L'Ecuyer. 2019. "Observation‐Based Radiative Kernels From CloudSat/CALIPSO." Journal of Geophysical Research: Atmospheres 124 5431– 5444 [10.1029/2018jd029021]

    Kramer, R. J., B. J. Soden, and A. G. Pendergrass. 2019. "Evaluating climate model simulations of the radiative forcing and radiative response at the Earth’s surface." Journal of Climate 32 4089-4102 [10.1175/jcli-d-18-0137.1]

    Smith, C. J., R. J. Kramer, G. Myhre, et al. P. M. Forster, B. J. Soden, T. Andrews, O. Boucher, G. Faluvegi, D. Fläschner, Ø. Hodnebrog, M. Kasoar, V. Kharin, A. Kirkevåg, J.-F. Lamarque, J. Mülmenstädt, D. Olivié, T. Richardson, B. H. Samset, D. Shindell, P. Stier, T. Takemura, A. Voulgarakis, and D. Watson-Parris. 2018. "Understanding Rapid Adjustments to Diverse Forcing Agents." Geophysical Research Letters 45 (21): 12,023-12,031 [10.1029/2018gl079826]

    Myhre, G., R. J. Kramer, C. J. Smith, et al. Ø. Hodnebrog, P. Forster, B. J. Soden, B. H. Samset, C. W. Stjern, T. Andrews, O. Boucher, G. Faluvegi, D. Fläschner, M. Kasoar, A. Kirkevåg, J.-F. Lamarque, D. Olivié, T. Richardson, D. Shindell, P. Stier, T. Takemura, A. Voulgarakis, and D. Watson-Parris. 2018. "Quantifying the Importance of Rapid Adjustments for Global Precipitation Changes." Geophysical Research Letters 45 (20): 11,399-11,405 [10.1029/2018gl079474]

    Kramer, R. J., and B. J. Soden. 2016. "The Sensitivity of the Hydrological Cycle to Internal Climate Variability versus Anthropogenic Climate Change." Journal of Climate 29 (10): 3661-3673 [10.1175/jcli-d-15-0408.1]

    Kramer, R. J., L. Bounoua, P. Zhang, et al. R. E. Wolfe, T. G. Huntington, M. L. Imhoff, K. J. Thome, and G. I. Noyce. 2015. "Evapotranspiration trends over the Eastern United States during the 20th Century." Hydrology 2 (2): 93-111 [10.3390/hydrology2020093]

                                                                                                                                                                                            
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