Watson W Gregg

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Watson W Gregg

  • (AST, OCEANOGRAPHIC STUDIES)
  • 301.614.5711 | 301.614.5644
  • NASA/GSFC
  • Mail Code: 610.1
  • Greenbelt , MD 20771
  • Employer: NASA
  • Brief Bio

    Served as Mission Operations Director for the SeaWiFS mission from 1991-1997. In this capacity he developed command scheduling software and navigation algorithms for SeaWiFS. He also developed an end-to-end mission simulation system that was used to design and test operations, data processing, algorithms, and validation methods before launch. After SeaWiFS was operational, he undertook scientific investigations including global biogeochemical modeling, ocean color assimilation, and analysis of historical ocean color missions.

    Selected Publications

    Refereed

    Rousseaux, C. S., and W. W. Gregg. 2014. "Interannual Variation in Phytoplankton Primary Production at A Global Scale." Remote Sensing, 6 (1): 1-19 [10.3390/rs6010001]

    Gregg, W. W., N. W. Casey, and C. S. Rousseaux. 2014. "Sensitivity of simulated global ocean carbon flux estimates to forcing by reanalysis products." Ocean Modelling, 80: 24-35 [10.1016/j.ocemod.2014.05.002]

    Gregg, W. W., and C. S. Rousseaux. 2014. "Decadal Trends in Global Pelagic Ocean Chlorophyll: A New Assessment Integrating Multiple Satellites, In Situ Data, and Models." Journal of Geophysical Research, 119 (9): 5921–5933 [10.1002/2014JC010158]

    Rousseaux, C. S., and W. W. Gregg. 2012. "Climate variability and phytoplankton composition in the Pacific Ocean." J. Geophys. Res., 117 (C10): C10006 [10.1029/2012JC008083]

    Carr, M., M. Friedrichs, M. Schmeltz, et al. M. Aita, D. Antoine, K. Arrigo, I. Asanuma, O. Aumont, R. Barber, M. Behrenfeld, R. Bidigare, E. Buitenhuis, J. Campbell, A. Ciotti, H. Dierssen, M. Dowell, J. Dunne, W. Esaias, B. Gentili, W. Gregg, S. Groom, N. Hoepffner, J. Ishizaka, T. Kameda, C. Le Quere, S. Lohrenz, J. Marra, F. Melin, K. Moore, A. Morel, T. Reddy, J. Ryan, M. Scardi, T. Smyth, K. Turpie, G. Tilstone, K. Waters, and Y. Yamanaka. 2006. "A comparison of global estimates of marine primary production from ocean color." Deep Sea Research Part II: Topical Studies in Oceanography, 53 (5-7): 741-770 [10.1016/j.dsr2.2006.01.028]

    Non-Refereed

    Gregg, W. W., N. W. Casey, and C. S. Rousseaux. 2013. "Global Surface Ocean Carbon Estimates in a Model Forced by MERRA." NASA Technical Report Series on Global Modeling and Data Assimilation 31: 39.

    Brief Bio

    Served as Mission Operations Director for the SeaWiFS mission from 1991-1997. In this capacity he developed command scheduling software and navigation algorithms for SeaWiFS. He also developed an end-to-end mission simulation system that was used to design and test operations, data processing, algorithms, and validation methods before launch. After SeaWiFS was operational, he undertook scientific investigations including global biogeochemical modeling, ocean color assimilation, and analysis of historical ocean color missions.

    Selected Publications

    Refereed

    Rousseaux, C. S., and W. W. Gregg. 2014. "Interannual Variation in Phytoplankton Primary Production at A Global Scale." Remote Sensing 6 (1): 1-19 [10.3390/rs6010001]

    Gregg, W. W., N. W. Casey, and C. S. Rousseaux. 2014. "Sensitivity of simulated global ocean carbon flux estimates to forcing by reanalysis products." Ocean Modelling 80 24-35 [10.1016/j.ocemod.2014.05.002]

    Gregg, W. W., and C. S. Rousseaux. 2014. "Decadal Trends in Global Pelagic Ocean Chlorophyll: A New Assessment Integrating Multiple Satellites, In Situ Data, and Models." Journal of Geophysical Research 119 (9): 5921–5933 [10.1002/2014JC010158]

    Rousseaux, C. S., and W. W. Gregg. 2012. "Climate variability and phytoplankton composition in the Pacific Ocean." J. Geophys. Res. 117 (C10): C10006 [10.1029/2012JC008083]

    Carr, M., M. Friedrichs, M. Schmeltz, et al. M. Aita, D. Antoine, K. Arrigo, I. Asanuma, O. Aumont, R. Barber, M. Behrenfeld, R. Bidigare, E. Buitenhuis, J. Campbell, A. Ciotti, H. Dierssen, M. Dowell, J. Dunne, W. Esaias, B. Gentili, W. Gregg, S. Groom, N. Hoepffner, J. Ishizaka, T. Kameda, C. Le Quere, S. Lohrenz, J. Marra, F. Melin, K. Moore, A. Morel, T. Reddy, J. Ryan, M. Scardi, T. Smyth, K. Turpie, G. Tilstone, K. Waters, and Y. Yamanaka. 2006. "A comparison of global estimates of marine primary production from ocean color." Deep Sea Research Part II: Topical Studies in Oceanography 53 (5-7): 741-770 [10.1016/j.dsr2.2006.01.028]

    Non-Refereed

    Gregg, W. W., N. W. Casey, and C. S. Rousseaux. 2013. "Global Surface Ocean Carbon Estimates in a Model Forced by MERRA." NASA Technical Report Series on Global Modeling and Data Assimilation 31 39

                                                                                                                                                                                            
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