I   Conversion from Fortran 77 to Fortran 90

(a) Comparison of Fortran 77 and Fortran 90 code on Eagle (e) and Seaborg (s) for Held-Suarez forcing expeiments using sigma (s) or hybridsigma (hs) coordinates. The time averages are done for days 200-1200 from every-5-day , 'instantaneous' model output interpolated to the latitude-longitude grids. 

(b) Comparison of Fortran 77 and Fortran 90 code on Eagle (e) for Held-Suarez forcing experiments using hybrid (h) coordinates. The time averages are done for days 200-1200 from every-5-day, 'instantaneous' model output interpolated to the latitude-longitude grids.
 

Fortran 77 (1000-day average)	Fortran 90 (1000-day average)	Difference
h77e   [.pdf] [.eps]	h90e   [.pdf] [.eps]	h77e-h90e    [.pdf] [.eps]

(c) Comparison of Fortran 90 code and Fortran 90 code with *.h files (common blocks) replaced by modules. The two simulations on Eagle (e) are identical for Held-Suarez forcing experiments using sigma (s) coordinates. The time averages are done for days 200-1200 from every-5-day, 'instantaneous' model output interpolated to the latitude-longitude grids.
 

Fortran 90 (1000-day average)	Fortran 90 with modules (1000-day average)	Difference
s90e   [.pdf] [.eps]	sm90e   [.pdf] [.eps]	s90e-sm90e    [.pdf] [.eps]

(d) The Concurrent Version System (CVS) is used to maintain the source code. A brief description of CVS can be found in webpage http://www.mmm.ucar.edu/mm5old/misc/cvs.html.

II  Expeiments with topography

Held-Suarez forcing experiments with topography and different model resolutions using sigma coordinates. The every-5-day, 'instantaneous' model output (interpolated to the latitude-longitude grids) is first interpolated to the pressure levels before statistical analyses. The time averages are done for the 3rd year or days 840-1200 of integration.

III  Expeiments with local mesh refinement and topography

Held-Suarez forcing experiments with local mesh refinement (LMR) over the continental US and with topography. Mesh 1 [.pdf] [.eps] and 2 [.pdf] [.eps] are two examples of LMR over the continental US [25N-50N, 125W-75W]. Experiments are done using sigma coordinates and Fortran 90 code with modules. The every-5-day, 'instantaneous' model output (interpolated to the latitude-longitude grids) is first interpolated to the pressure levels before statistical analyses. The time averages are done for the 3rd year or days 650-1000 of integration.

IV Experiments with 'real' data and coupling with NCAR's CAM physics

(a) Held-Suarez forcing experiments with 'real' data: 'Instantaneous' sea level pressure (PSL) at days 0, 5, and 10.

(b) Coupling SEAM with NCAR's CAM physics - 'Aqua-planet' Experiments: 'Instantaneous' sea level pressure (PSL) at days 0, 5, and 10.

V. Presentations

(a) A poster at the 8th Annual CCSM Workshop, Breckenridge, Colorado, 24-26 June 2003.

(b) A presentation at the CCSM AMWG meeting, Boulder, Colorado, 9-10 March 2004.

(c) A poster at the 2004 SciDAC PI meeting, Charleston, SC, 22-24 March 2004.

Updated 18 Mar 2004. Comments or questions: Houjun Wang.