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GFDL Events & Seminars

Poster Expos

Upcoming GFDL events & seminars

Events and seminars
  • April 2, 2015: TBA
    Jeremey Fyke (Los Alamos Natl. Lab)
    TBA
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • April 9, 2015: TBA
    Joanie Kleypas (NCAR)
    TBA
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • April 16, 2015: A 21st Century Northward Tropical Precipitation Shift Caused by Future Anthropogenic Aerosol Reductions
    Robert Allen (UC - Riverside)
    The tropical rain belt is a narrow band of clouds and showers near the equator, where the most intense rainfall on the planet occurs. On seasonal timescales, the rain moves back and forth across the equator following the sun, resulting in wet and dry seasons in the tropics. The position of the tropical rain belt also varies on longer time scales. Through the latter half of the 20th century, for example, shifts in tropical rainfall have been associated with severe droughts, including the African Sahel and Amazon droughts. Here, I show that climate models project a northward migration of the tropical rain belt through the 21st century, with future anthropogenic aerosol reductions driving the bulk of the shift. Models that include both aerosol indirect effects yield significantly larger northward shifts than models that lack aerosol indirect effects. Moreover, the rate of the shift corresponds to the rate of the decrease of anthropogenic aerosol emissions across different time periods and future emission scenarios. This response is consistent with relative warming of the Northern Hemisphere, and a concomitant northward shift in the Hadley cells, along with weaker northward cross-equatorial energy transport. Although aerosol effects remain uncertain, I conclude that future reductions in anthropogenic aerosol emissions may be the dominant driver of a 21st century northward shift of the tropical rain belt.
    Time: 2:00 pm - 3:15 pm
    Location: Smagorinsky Seminar Room
  • April 23, 2015: TBA
    Tim Lenton (Exeter - UK)
    TBA
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • April 29, 2015: Get more from your data with PyFerret
    Karl Smith (NOAA/PMEL (Pacific Marine Environmental Laboratory))
    Present an introduction and discussion of PyFerret, the new Python-enabled version of Ferret.
    Time: 12:00 pm - 1:30 pm
    Location: Smagorinsky Seminar Room
  • April 30, 2015: Uncertainty in climate change projections: the role of internal atmospheric circulation variability
    Clara Deser (NCAR)
    This talk will highlight the relative importance of internally-generated vs. externally-forced climate trends at local and regional scales over North America and Eurasia based on a 30-member ensemble of the Community Earth System Model over the period 1920-2100. Each member is subject to the same historical and future (RCP8.5) radiative forcing scenario, but starts from a slightly different atmospheric state. Unpredictable, intrinsic variability of the large-scale atmospheric circulation strongly influences the pattern, magnitude and polarity of surface air temperature and precipitation trends in any single simulation, despite the common radioactive forcing. Implications for model validation, inter-model comparisons, and interpretation of observed climate trends will be discussed.
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • May 6, 2015: TBA
    Pu Lin (AOS/GFDL)
    TBA
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • May 7, 2015: TBA
    Jean-Francois Lamarque (GFDL)
    TBA
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • May 13, 2015: TBA
    Tom Delworth and Liping Zhang (GFDL)
    TBA
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • May 14, 2015: TBA
    Zhou Wang (U of Illinois)
    TBA
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • May 20, 2015: TBA
    Apostolos Voulgarakis (Imperial College)
    Seminar
    Time: 12:00 pm - 1:15 pm
    Location: Smagorinsky Seminar Room
  • May 21, 2015: TBA
    Steve Krueger (University of Utah)
    TBA
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • June 18, 2015: TBA
    Susan Lozier (Duke University)
    TBA
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • June 25, 2015: TBA
    Richard Rotunno (UCAR, Boulder, CO)
    TBA
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • September 2, 2015: Analytical solution of PBL
    Ben-Jei Tsuang (GFDL)
    Seminar
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room

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