Baseline: current operational GFS (OP3T3), labeled O below

List of parameterizations that will be tested:

-   HLW hourly longwave radiation (Yutai)

-   R1LW RRTM1 longwave radiation (Yutai)

-   AERO new aerosol treatment (Yutai)

-   MRC maximum-random cloud overlap (Yutai)

-   RSW RRTM shortwave radiation (Yutai)

-   N1SW NCEP1 3-band shortwave radiation (Yutai)

-   ESMF ESMF 3.0.1 (Moorthi)

-   ENTH enthalpy equation (Henry)

-   ALB MODIS albedo with diurnal correction (Helin, Fanglin, George)

-   CGW convective gravity wave drag (Ake)

-   OGW retuned mountain blocking and new datasets (Jordan)

-   PBL new PBL (Jongil)

-   MSC mass-flux shallow convection (Jongil)

-   SAS new trigger and momflux in SAS deep convection (Jongil)

-   FMM Ferrier-Moorthi microphysics (Moorthi)

-   RAS RAS deep convection (Moorthi)

-   CO2 realistic CO2 (Yutai)

-   CLDF radiative clouds filtered in the vertical (Moorthi)

-   TADV non-negative vertical tracer advection (Fanglin)

List of inadvertent changes:

-   xSCI shallow convection turned off under inversion

-   xAERO new aerosol treatment but with a bug

-   xCRH criticial RH at 0.98 instead of operational 0.85

-   xALB ocean albedo set to zero

Table of experiments (Director: Moorthi; Producer: Suru; Executive
Producer: Mark)

  ----- ----- -------------------------------- ----------- --------- ---------
  Exp   Ctl   Changes w.r.t. Ctl               H/S/C       Status    Results

  1     O     +HLW+xCRH                                    done      

  2     1     +ESMF+R1LW+xAERO+MRC+xSCI        H           done      

  3     2     -xSCI                            H           done      

  4     3     -xAERO+AERO                                  done      

  5     4     +ENTH+ALB+xOALB+RSW                          done      

  6     5     +PBL+MSC+SAS                                 done      

  7     O                                      H,S,C       done      

  8     5     -xCRH                            H,S,C       done      

  9     6     -xCRH                            H,S,C       done      

  10    9     +FMM                             H,S,C       done      

  11    8     -xOALB                           C           ongoing   

  12    11    +OGW+CO2+CLDF                    H,S,C       ongoing   

        12    +PBL+MSC+SAS                     H,S,C                 

        12    +PBL+MSC+SAS+FMM                                       

        12    +RAS+FMM                                               

        12    +TADV                                                  
  ----- ----- -------------------------------- ----------- --------- ---------

Testing strategy (data assimilation experiments spin up for 15 days)

H = High resolution (T382 noDA) forecasts

S = Spring low resolution DA+F

C = 10-year free coupled run

Phase 1.

-   Summer

    -   2 months T126L64(DA+F) 1 Jul 2005 -- 31 Aug 2005

    -   30 T382L64(noDA) 5d forecasts 1 Aug 2005 -- 30 Aug 2005 *for
        some*

-   Winter

    -   2 months T126L64(DA+F) 1 Dec 2006 -- 31 Jan 2007

    -   30 T382L64(noDA) 5d forecasts 1 Jan 2007 -- 30 Jan 2007 *for
        some*

-   Spring *for some*

    -   1 months T126L64(DA+F) 1 May 2007 -- 31 May 2007

    -   30 T382L64(noDA) 5d forecasts 1 May 2007 -- 30 May 2007 *for
        some*

-   Coupled *for some*

    -   10-year T126L64 free coupled run

Phase 2.

-   Summer

    -   4 months T382L64(DA+F) 1 Jul 2005 -- 31 Oct 2005

-   Winter

    -   4 months T382L64(DA+F) 1 Dec 2006 -- 31 Mar 2007

-   Spring

    -   2 months T382L64(DA+F) 1 May 2007 -- 30 Jun 2007

-   Coupled

    -   50-year T126L64 free coupled run

Target schedule

-   1 Jun 2007 Physics packages delivered

-   1 Sep 2007 Decide semi-frozen GFS+GSI

-   1 Nov 2007 Freeze GFS+GSI

-   1 Feb 2007 Implement

June 21, 2007

GLOBMOB