Dr. Alek Aaron Petty

Dr. Alek Aaron Petty

  • ASSISTANT RESEARCH SCIENTIST
  • 301.614.6120
  • NASA/GSFC
  • Mail Code: 615
  • Greenbelt , MD 20771
  • Employer: UNIVERSITY OF MARYLAND
  • Brief Bio

    Dr. Petty graduated with an MSci in Physics from the University of Bristol in 2010, and a PhD in Climate Science from University College London in 2014. Dr. Petty joined the University of Maryland (ESSIC) in 2014 and was hosted at the NOAA Center for Weather and Climate Prediction. Dr. Petty joined NASA's Operation IceBridge project science office at NASA's Goddard Space Flight Center in late 2015, and also became a member of the ICESat-2 project science office in summer 2018. 

    For more information about Dr. Petty and his research interests, take a look at his website at http://www.alekpetty.com

    Research Interests

    Sea ice variability

    I am principally interested in polar sea ice; the physics governing its mean state, the factors contributing to its spatial and temporal variability, and its coupling with the atmosphere and ocean. The transfer of heat, salt, water and momentum through sea ice is a key theme throughout much of my work. I utilize sea ice models (of varying complexity) and sea ice observations (in-situ, airborne and satellite) to increase our understanding of these fundamental concepts. Research foci include:

    • Remote sensing of sea ice
    • Sea ice dynamics and momentum transfer
    • Idealized and high-resolution sea ice modelling
    • Snow on sea ice
    • Extreme events in the polar regions
    • Sea ice prediction
    • Linkages between sea ice, ice sheets and global climate

    I am a strong proponent of open science and strive to make this a continued focus of my research approach.

    Positions/Employment

    7/2017 - Present

    Assistant Research Scientist

    Earth Systems Science Interdisciplinary Center (ESSIC), University of Maryland, NASA Goddard Space Flight Center
    10/2015 - 6/2017

    Research Associate

    Earth Systems Science Interdisciplinary Center (ESSIC), University of Maryland, NASA Goddard Space Flight Center
    2/2014 - 9/2015

    Research Associate

    Earth Systems Science Interdisciplinary Center (ESSIC), University of Maryland,, NOAA Center for Weather and Climate Prediction (NCWCP)

    Publications

    Refereed

    Kwok, R., T. Markus, N. Kurtz, et al. A. Petty, T. Neumann, S. Farrell, G. Cunningham, D. Hancock, A. Ivanoff, and J. Wimert. 2019. "Surface height and sea ice freeboard of the Arctic Ocean from ICESat‐2: Characteristics and early results." Journal of Geophysical Research: Oceans, 2019JC015486 [10.1029/2019jc015486]

    Frew, R. C., D. L. Feltham, P. R. Holland, and A. A. Petty. 2019. "Sea Ice – Ocean Feedbacks in the Antarctic Shelf Seas." Journal of Physical Oceanography, JPO-D-18-0229.1 [10.1175/jpo-d-18-0229.1]

    Petty, A. A., M. Webster, L. Boisvert, and T. Markus. 2018. "The NASA Eulerian Snow on Sea Ice Model (NESOSIM) v1.0: initial model development and analysis." Geoscientific Model Development, 11 (11): 4577-4602 [10.5194/gmd-11-4577-2018]

    Petty, A. A., M. M. Holland, D. A. Bailey, and N. T. Kurtz. 2018. "Warm Arctic, increased winter sea-ice growth?" Geophysical Research Letters, [10.1029/2018gl079223]

    Mcpartland, L. N., M. A. Webster, A. A. Petty, et al. T. Markus, D. Bromwich, and R. I. Cullather. 2018. "Intercomparison of precipitation estimates over the Arctic Ocean and its peripheral seas from reanalyses." Journal of Climate,

    Petty, A. A. 2018. "A Possible Link Between Winter Arctic Sea Ice Decline and a Collapse of the Beaufort High?" Geophysical Research Letters, [10.1002/2018gl077704]

    Petty, A. A., J. C. Stroeve, P. R. Holland, et al. L. N. Boisvert, A. C. Bliss, N. Kimura, and W. N. Meier. 2018. "The Arctic sea ice cover of 2016: a year of record-low highs and higher-than-expected lows." The Cryosphere, 12 (2): 433-452 [10.5194/tc-12-433-2018]

    Cole, S. T., J. M. Toole, R. Lele, et al. M.-L. Timmermans, S. G. Gallaher, T. P. Stanton, W. J. Shaw, B. Hwang, T. Maksym, J. P. Wilkinson, M. Ortiz, H. Graber, L. Rainville, A. A. Petty, S. L. Farrell, J. A. Richter-Menge, C. Haas, J. W. Deming, and J. Thomson. 2017. "Ice and ocean velocity in the Arctic marginal ice zone: Ice roughness and momentum transfer." Elem Sci Anth, 5: [10.1525/elementa.241]

    Petty, A. A., M. C. Tsamados, and N. T. Kurtz. 2017. "Atmospheric form drag coefficients over Arctic sea ice using remotely sensed ice topography data, spring 2009-2015." Journal of Geophysical Research: Earth Surface, 122: [10.1002/2017jf004209]

    Armitage, T. W., S. Bacon, A. L. Ridout, et al. A. A. Petty, S. Wolbach, and M. Tsamados. 2017. "Arctic Ocean geostrophic circulation 2003-2014." The Cryosphere, 11: 1767-1780 [10.5194/tc-2017-22]

    Graham, R. M., L. Cohen, A. A. Petty, et al. L. N. Boisvert, A. Rinke, S. R. Hudson, M. Nicolaus, and M. A. Granskog. 2017. "Increasing frequency and duration of Arctic winter warming events." Geophysical Research Letters, 44: [10.1002/2017gl073395]

    Petty, A. A., D. Schröder, J. C. Stroeve, et al. T. Markus, J. Miller, N. T. Kurtz, D. L. Feltham, and D. Flocco. 2017. "Skillful spring forecasts of September Arctic sea ice extent using passive microwave sea ice observations." Earth's Future, 5: 254–263 [10.1002/2016EF000495]

    Boisvert, L. N., A. A. Petty, and J. C. Stroeve. 2016. "The Impact of the Extreme Winter 2015/16 Arctic Cyclone on the Barents–Kara Seas." Monthly Weather Review, [http://dx.doi.org/10.1175/MWR-D-16-0234.1]

    Petty, A. A., M. C. Tsamados, N. T. Kurtz, et al. S. L. Farrell, T. Newman, J. P. Harbeck, D. L. Feltham, and J. A. Richter-Menge. 2016. "Characterizing Arctic sea ice topography using high-resolution IceBridge data." The Cryosphere, 10 (3): 1161-1179 [10.5194/tc-10-1161-2016]

    Petty, A. A., J. K. Hutchings, J. A. Richter-Menge, and M. A. Tschudi. 2016. "Sea ice circulation around the Beaufort Gyre: The changing role of wind forcing and the sea ice state." Journal of Geophysical Research: Oceans, 121 (5): 3278-3296 [10.1002/2015jc010903]

    Tsamados, M., D. Feltham, A. Petty, D. Schroeder, and D. Flocco. 2015. "Processes controlling surface, bottom and lateral melt of Arctic sea ice in a state of the art sea ice model." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 373 (2052): 20140167 [10.1098/rsta.2014.0167]

    Petty, A. A., P. R. Holland, and D. L. Feltham. 2014. "Sea ice and the ocean mixed layer over the Antarctic shelf seas." The Cryosphere, 8 (2): 761-783 [10.5194/tc-8-761-2014]

    Petty, A. A., D. L. Feltham, and P. R. Holland. 2013. "Impact of Atmospheric Forcing on Antarctic Continental Shelf Water Masses." Journal of Physical Oceanography, 43 (5): 920-940 [10.1175/jpo-d-12-0172.1]

    Non-Refereed

    Petty, A. A., T. Markus, and N. T. Kurtz. 2017. "Improving our understanding of Antarctic sea ice with NASA's Operation IceBridge and the upcoming ICESat-2 mission." US CLIVAR Variations 15 (3):

    Brief Bio

    Dr. Petty graduated with an MSci in Physics from the University of Bristol in 2010, and a PhD in Climate Science from University College London in 2014. Dr. Petty joined the University of Maryland (ESSIC) in 2014 and was hosted at the NOAA Center for Weather and Climate Prediction. Dr. Petty joined NASA's Operation IceBridge project science office at NASA's Goddard Space Flight Center in late 2015, and also became a member of the ICESat-2 project science office in summer 2018. 

    For more information about Dr. Petty and his research interests, take a look at his website at http://www.alekpetty.com

    Publications

    Refereed

    Kwok, R., T. Markus, N. Kurtz, et al. A. Petty, T. Neumann, S. Farrell, G. Cunningham, D. Hancock, A. Ivanoff, and J. Wimert. 2019. "Surface height and sea ice freeboard of the Arctic Ocean from ICESat‐2: Characteristics and early results." Journal of Geophysical Research: Oceans 2019JC015486 [10.1029/2019jc015486]

    Frew, R. C., D. L. Feltham, P. R. Holland, and A. A. Petty. 2019. "Sea Ice – Ocean Feedbacks in the Antarctic Shelf Seas." Journal of Physical Oceanography JPO-D-18-0229.1 [10.1175/jpo-d-18-0229.1]

    Petty, A. A., M. Webster, L. Boisvert, and T. Markus. 2018. "The NASA Eulerian Snow on Sea Ice Model (NESOSIM) v1.0: initial model development and analysis." Geoscientific Model Development 11 (11): 4577-4602 [10.5194/gmd-11-4577-2018]

    Petty, A. A., M. M. Holland, D. A. Bailey, and N. T. Kurtz. 2018. "Warm Arctic, increased winter sea-ice growth?" Geophysical Research Letters [10.1029/2018gl079223]

    Mcpartland, L. N., M. A. Webster, A. A. Petty, et al. T. Markus, D. Bromwich, and R. I. Cullather. 2018. "Intercomparison of precipitation estimates over the Arctic Ocean and its peripheral seas from reanalyses." Journal of Climate

    Petty, A. A. 2018. "A Possible Link Between Winter Arctic Sea Ice Decline and a Collapse of the Beaufort High?" Geophysical Research Letters [10.1002/2018gl077704]

    Petty, A. A., J. C. Stroeve, P. R. Holland, et al. L. N. Boisvert, A. C. Bliss, N. Kimura, and W. N. Meier. 2018. "The Arctic sea ice cover of 2016: a year of record-low highs and higher-than-expected lows." The Cryosphere 12 (2): 433-452 [10.5194/tc-12-433-2018]

    Cole, S. T., J. M. Toole, R. Lele, et al. M.-L. Timmermans, S. G. Gallaher, T. P. Stanton, W. J. Shaw, B. Hwang, T. Maksym, J. P. Wilkinson, M. Ortiz, H. Graber, L. Rainville, A. A. Petty, S. L. Farrell, J. A. Richter-Menge, C. Haas, J. W. Deming, and J. Thomson. 2017. "Ice and ocean velocity in the Arctic marginal ice zone: Ice roughness and momentum transfer." Elem Sci Anth 5 [10.1525/elementa.241]

    Petty, A. A., M. C. Tsamados, and N. T. Kurtz. 2017. "Atmospheric form drag coefficients over Arctic sea ice using remotely sensed ice topography data, spring 2009-2015." Journal of Geophysical Research: Earth Surface 122 [10.1002/2017jf004209]

    Armitage, T. W., S. Bacon, A. L. Ridout, et al. A. A. Petty, S. Wolbach, and M. Tsamados. 2017. "Arctic Ocean geostrophic circulation 2003-2014." The Cryosphere 11 1767-1780 [10.5194/tc-2017-22]

    Graham, R. M., L. Cohen, A. A. Petty, et al. L. N. Boisvert, A. Rinke, S. R. Hudson, M. Nicolaus, and M. A. Granskog. 2017. "Increasing frequency and duration of Arctic winter warming events." Geophysical Research Letters 44 [10.1002/2017gl073395]

    Petty, A. A., D. Schröder, J. C. Stroeve, et al. T. Markus, J. Miller, N. T. Kurtz, D. L. Feltham, and D. Flocco. 2017. "Skillful spring forecasts of September Arctic sea ice extent using passive microwave sea ice observations." Earth's Future 5 254–263 [10.1002/2016EF000495]

    Boisvert, L. N., A. A. Petty, and J. C. Stroeve. 2016. "The Impact of the Extreme Winter 2015/16 Arctic Cyclone on the Barents–Kara Seas." Monthly Weather Review [http://dx.doi.org/10.1175/MWR-D-16-0234.1]

    Petty, A. A., M. C. Tsamados, N. T. Kurtz, et al. S. L. Farrell, T. Newman, J. P. Harbeck, D. L. Feltham, and J. A. Richter-Menge. 2016. "Characterizing Arctic sea ice topography using high-resolution IceBridge data." The Cryosphere 10 (3): 1161-1179 [10.5194/tc-10-1161-2016]

    Petty, A. A., J. K. Hutchings, J. A. Richter-Menge, and M. A. Tschudi. 2016. "Sea ice circulation around the Beaufort Gyre: The changing role of wind forcing and the sea ice state." Journal of Geophysical Research: Oceans 121 (5): 3278-3296 [10.1002/2015jc010903]

    Tsamados, M., D. Feltham, A. Petty, D. Schroeder, and D. Flocco. 2015. "Processes controlling surface, bottom and lateral melt of Arctic sea ice in a state of the art sea ice model." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373 (2052): 20140167 [10.1098/rsta.2014.0167]

    Petty, A. A., P. R. Holland, and D. L. Feltham. 2014. "Sea ice and the ocean mixed layer over the Antarctic shelf seas." The Cryosphere 8 (2): 761-783 [10.5194/tc-8-761-2014]

    Petty, A. A., D. L. Feltham, and P. R. Holland. 2013. "Impact of Atmospheric Forcing on Antarctic Continental Shelf Water Masses." Journal of Physical Oceanography 43 (5): 920-940 [10.1175/jpo-d-12-0172.1]

    Non-Refereed

    Petty, A. A., T. Markus, and N. T. Kurtz. 2017. "Improving our understanding of Antarctic sea ice with NASA's Operation IceBridge and the upcoming ICESat-2 mission." US CLIVAR Variations 15 (3):

                                                                                                                                                                                            
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