The U.S. CLIVAR Drought Working Group Data
hosted at the NASA/GSFC Global Modeling and Assimilation Office (GMAO) FTP Site

Welcome

NCEP GFS AGCM

    Idealized SST experiments

    The idealized SST experiments with the NCEP GFS are performed by the Climate Prediction Center (CPC) of the National Center for Environmental Prediction (NCEP).

    The idealized runs are 37 years long, and data of the last 36 years are saved.

    The data are listed at ftp://gmaoftp.gsfc.nasa.gov/pub/data/clivar_drought_wg/GFS/. The select variables are monthly mean precip, surface skin temperature, t2m, SST, soil moisture (total 2m depth), latent heat, 200mb height and u-wind, 850mb u- and v-winds, surface fluxes, and three-dimensional u-wind, v-wind, specific humidity, temperature, and moisture fluxes at all 20 pressure levels. The datasets are written in GRIB format and corresponding GrADS control and index files are also included.

    List of idealized runs with the NCEP GFS:

      Impacts of three leading SST patterns

        Indicator of experiment: explanation of SST anomaly forcing for the experiment

        Clim: Climatology/Control Run
        cPcA: Cold_Pacific + Cold_Atlantic
        cPnA: Cold_Pacific (Cold_Pacific + Neutral_Atlantic)
        cPwA: Cold_Pacific + Warm_Atlantic
        cTPcTA: Cold_Tropical_Pacific + Cold_Tropical_Atlantic
        cTPwTA: Cold_Tropical_Pacific + Warm_Tropical_Atlantic
        nLTcPwA: Negative_Trend + Cold_Pacific + Warm_Atlantic
        nLT: Negative_Trend
        nLTwPcA: Negative_Trend + Warm_Pacific + Cold_Atlantic
        nPcA: Cold_Atlantic (Neutral_Pacific + Cold_Atlantic)
        nPwA: Warm_Atlantic (Neutral_Pacific + Warm_Atlantic)
        pLTcPwA: Positive_Trend + Cold_Pacific + Warm_Atlantic
        pLT: Positive_Trend
        pLTwPcA: Positive_Trend + Warm_Pacific + Cold_Atlantic
        unif: Uniform SST Warming of 0.16K
        wPcA: Warm_Pacific + Cold_Atlantic
        wPnA: Warm_Pacific (Warm_Pacific + Neutral_Atlantic)
        wPwA: Warm_Pacific + Warm_Atlantic
        wTPcTA: Warm_Tropical_Pacific + Cold_Tropical_Atlantic
        wTPwTA: Warm_Tropical_Pacific + Warm_Tropical_Atlantic

      Fixed soil moiture experiments

        No fixed soil moisture experiments have been performed.

      Impacts of low frequency and ENSO patterns in the Pacific

        nHP: Cold_ENSO
        nLP: Cold_LowFrequency_Pacific
        pHP: Warm_ENSO
        pLP: Warm_LowFrequency_Pacific

      flx: 2D fields
      pgb: 3D fields at pressure levels

    AMIP experiments

    There are 5 AMIP run (1980-2007) available. The data are available at ftp://gmaoftp.gsfc.nasa.gov/pub/data/clivar_drought_wg/GFS/

      ens01: AMIP run 1
      ens02: AMIP run 2
      ens03: AMIP run 3
      ens04: AMIP run 4
      ens05: AMIP run 5
      ensmean: AMIP 5 member ensemble mean

      NOTE: The data for Dec. 2000 in the ens04 case is missing because of the missing archive tape file at the NCEP CPC.

    Model References

    Campana, K. and P. Caplan, Editors, 2005: Technical Procedure Bulletin for T382 Global Forecast System (http://www.emc.ncep.noaa.gov/gc_wmb/Documentation/TPBoct05/T382.TPB.FINAL.htm).

    Point of Contact

    Dr. Jae-Kyung E. Schemm
    Climate Prediction Center/NCEP/NWS/NOAA, W/NP5, WWB
    5200 Auth Road
    Camp Springs, MD 20746-4304
    Tel: 301-763-8000, Ext. 7565
    Email: Jae.Schemm@noaa.gov