GFDL - Geophysical Fluid Dynamics Laboratory

GFDL Events & Seminars

Upcoming GFDL events & seminars

Events and seminars

  • December 9, 2016: Dynamic Preconditioning of the Minimum September Sea-ice Extent
    James Williams (McGill University)
    There has been an increased interest in seasonal forecasting of the Arctic sea ice extent in recent years, in particular the minimum sea ice extent. Here, a dynamical mechanism, based on winter preconditioning, is found to explain a significant fraction of the variance in the anomaly of the September sea ice extent from the long-term linear trend. To this end, a Lagrangian trajectory model is used to backtrack the September sea ice edge to any time during the previous winter and quantify the amount of sea ice advection away from the Eurasian and Alaskan coastlines as well as the Fram Strait sea ice export. The late-winter anomalous sea ice drift away from the coastline is highly correlated with the following September sea ice extent minimum (r = -0.66). It is found that the winter mean Fram Strait sea ice export anomaly is also correlated with the minimum sea ice extent the following summer (r = -0.74). To develop a hindcast model of the September sea ice extent—which does not depend on a priori knowledge of the minimum sea ice extent—a synthetic ice edge initialized at the beginning of the melt season (1 June) is backtracked. It is found that using a multivariate regression model of the September sea ice extent anomaly based on ice export from the peripheral Arctic seas and Fram Strait ice export as predictors reduces the error by 38%. A hindcast model based on the mean December–April Arctic Oscillation index alone reduces the error by 24%.
    Time: 12:00 pm - 1:30 pm
    Location: Smagorinsky Seminar Room
  • January 5, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • January 11, 2017: TBD
    Alexis Burg (GFDL)
    TBD
    Time: 12:00 pm - 1:00 pm
    Location: Smagorinsky Seminar Room
  • January 12, 2017: TBD
    Adrian Jenkins (Cambridge, UK)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • January 19, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • January 26, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • February 1, 2017: Winter 2017 GFDL Poster Expo
    GFDL Poster Expo
    Winter 2017 GFDL Poster Expo
    Time: 1:00 pm - 6:00 pm
    Location: Smagorinsky Seminar Room
  • February 2, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • February 9, 2017: TBD
    Erik van Sebille (Imperial College London)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • February 16, 2017: TBD
    Eric Maloney (Colorado State University)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • February 23, 2017: TBD
    Sloan Coats (University of Colorado)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • March 2, 2017: TBD
    William Collins (LBL and UC Berkeley)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • March 9, 2017: TBD
    Dargan Frierson (University of Washington)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • March 16, 2017: TBD
    Oliver Wild (Lancaster University, UK)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • March 23, 2017: TBD
    Kpse[ {emie;as (University of Barcelona)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • March 30, 2017: TBD
    Anna Michalak (Carnegie Institute-Stanford, CA)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • April 6, 2017: TBD
    Kevin Bowman (NASA JPL)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • April 13, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • April 20, 2017: TBD
    Noah Diffenbaugh (Stanford University)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • April 27, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • May 4, 2017: TBD
    Rich Neale (NCAR)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • May 11, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • May 18, 2017: TBD
    Rob DeConto (University of Massachussetts)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • May 25, 2017: TBD
    Ning Lin (Princeton University)
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room
  • June 1, 2017: TBD
    Formal Seminar
    TBD
    Time: 2:00 pm - 3:00 pm
    Location: Smagorinsky Seminar Room

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