GFDL - Geophysical Fluid Dynamics Laboratory

GFDL Events & Seminars

Upcoming GFDL events & seminars

Events and seminars

  • August 23, 2017: Modeling the impacts of climate variability and change on Chesapeake and Delaware Bays
    Andrew Ross (Penn State)
    In this talk, I discuss two key questions on the use of numerical models to understand the impacts of climate variability and change on the Chesapeake and Delaware Bays and other estuarine ecosystems. First, are numerical ocean models capable of accurately simulating the effects of climate change that have already been observed? Using model simulations of changes in tides in response to past sea-level rise, I show that the model successfully reproduced some of the observed sensitivity of tidal amplitudes to mean sea level. Notably, sea-level rise produces a shifting of the amphidromic system in the Chesapeake Bay and increased amplification of the tides in the Delaware Bay. Second, how can we use numerical models to simulate the effects of uncertain future climate change? Top-down strategies are often employed, which involve a computationally expensive chain of models to translate global climate change into local impacts. However, to reduce the computational costs, modelers often must restrict their simulations to use boundary conditions from only a few emissions scenarios and global climate models. My work examines how to optimally select a limited number of boundary condition models using a test case of simulating runoff in the Susquehanna River Basin. I show that only one model selection strategy was satisfactory. However, regardless of the selection strategy used, simulations with only a few model scenarios neglected a large range of actual uncertainty. Therefore, complex numerical models may be better used in idealized sensitivity experiments or as compliments to other modeling approaches. POC at GFDL is Charles Stock, 609-452-5331.
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • August 28, 2017: Climate Engineering
    Climate Engineering
    Climate Engineering
    Time: 8:00 am - 5:00 pm
    Location: Smagorinsky Seminar Room
  • August 29, 2017: Climate Engineering
    Climate Engineering
    Climate Engineering
    Time: 8:00 am - 5:00 pm
    Location: Smagorinsky Seminar Room
  • August 30, 2017: Climate Engineering
    Climate Engineering
    Climate Engineering
    Time: 8:00 am - 5:00 pm
    Location: Smagorinsky Seminar Room
  • September 6, 2017: Sahel rainfall response to a uniform oceanic warming
    Yi Ming (GFDL)
    Coupled climate models project future changes to rainfall in the African Sahel ranging from severe drying to severe wettening. Atmosphere-only models perturbed with uniform ocean surface warming span a similar range, motivating study of the simpler latter problem in order to constrain the more societally relevant former one. We analyze four comprehensive atmospheric models developed at the NOAA Geophysical Fluid Dynamics Laboratory, which respond to uniform ocean surface warming of 2 K with Sahel wet season rainfall changes ranging from -38 to +15%. A detailed MSE budget analysis reveals the relative importance of different processes in determining the response.
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • September 7, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • September 13, 2017: TBD
    Lorenzo Polvani (Columbia University)
    TBD
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • September 14, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • September 20, 2017: TBA
    Yohai Kaspi
    Yohai Kaspi Dept. of Earth and Planetary Sciences Weizmann Institute of Science, Israel
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • September 21, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • September 27, 2017: TBD
    Luc Deike (Princeton University)
    TBD
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • September 28, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • October 4, 2017: Moisture-convection feedbacks and a precipitation equation for the Madden-Julian Oscillation
    Angel Adames (GFDL)
    Column moisture and moist static energy (MSE) budgets have become common tools in the study of the processes responsible for the maintenance and evolution of the MJO. While many studies have shown that precipitation is spatially correlated with column moisture, these budgets do not directly describe the MJO-related precipitation anomalies. Other spatially varying fields may also play a role in determining the horizontal distribution of anomalous precipitation. In this study, an empirical precipitation anomaly field is derived that depends on three variables in addition to column moisture. These are the low-frequency distribution of precipitation, the low-frequency column saturation water vapor, and the sensitivity of precipitation to changes in column relative humidity. The addition of these fields improve upon moisture/MSE budgets by confining these anomalies to the climatologically rainy areas of the tropics, where MJO activity is strongest. The derived field adequately describes the MJO-related precipitation anomalies, comparing favorably with TRMM precipitation data.
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • October 5, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • October 11, 2017: TBD
    Pu Lin
    TBD
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • October 12, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • October 19, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • October 25, 2017: TBD
    Hyeyum Hailey Shin (GFDL)
    TBD
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • October 26, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • November 2, 2017: GFDL Fall Symposium
    GFDL Fall Symposium
    GFDL Fall Symposium
    Time: 8:00 am - 5:00 pm
    Location: Smagorinsky Seminar Room
  • November 8, 2017: TBD
    Alexandra Jones (GFDL)
    TBD
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • November 9, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • November 16, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • November 29, 2017: Chairman of the Board
    David Goodrich (Chesapeake Climate Action Network)
    A Hole in the Wind: A Bicycle Journey Across the US, Looking at Climateā€¯ After retiring from NOAA in 2011, the speaker rode 4200 miles from Delaware to Oregon, looking at the effects of climate change up close and talking with people along the way. He came across fragmented barrier islands on the coast, drought and expanding wind farms in Kansas, beetle-killed forest in Colorado and fire in Idaho. Along the way, he encountered a toddler's beauty pageant in Maryland, the landscape of fracking in Pennsylvania, a tornado party in Missouri, and a ghost town in Wyoming. His book, A Hole in the Wind, was released by Pegasus Books this summer.
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • November 30, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • December 7, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • December 14, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • December 21, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • December 28, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • January 4, 2018: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • January 11, 2018: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • January 18, 2018: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • January 25, 2018: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • February 1, 2018: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • February 8, 2018: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • February 15, 2018: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room

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