GCAP

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Revision as of 20:10, 27 March 2008 by Bmy (Talk | contribs) (New page: About Metfields from GISS model ********a3h.gis fields, all ixj, in the order that they appear in output files (1:30, 4:30, 7:30, ..., 22:30GMT) x 16 == A-3 Fields == These are 3-hour a...)

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About Metfields from GISS model

                • a3h.gis fields, all ixj, in the order that they appear in output files

(1:30, 4:30, 7:30, ..., 22:30GMT) x 16

A-3 Fields

These are 3-hour average fields.

Times: (1:30, 4:30, 7:30, ..., 22:30GMT) x 16 fields

Name Long Name Units
albedo albedo unitless (=0 over dark areas)
preacc

total precip

mm H2O /day
precon convective precip mm H2O /day
ts ts surface temp K
molength Monin-Obukhov length m
ustar friction velocity m/s
pbl boundary layer ht m
radswg incident radiation at ground W/m2
snice fraction of box covered with snow or land or ocean ice unitless
oice ocean or lake ice fraction unitless
uss surface (10m)u wind m/s
vss surface (10m) v wind m/s
soil volumetric water content m3/m3
snowd snow depth mm
pardir direct photosynthetically active radiation w/m2
pardif diffusive photosynthetically active radiation w/m2

The albedo is calculated only when sunlight is shining. During a dark timestep, the program "remembers" the albedo from the previous timestep. The problem is that some places are in continuous night.


                • a6h.gis fields, all ixjxl, in the order that they appear in output files

(3, 9, 15, 21GMT) x 14 label........field..........................units t temperature K u zonal winds m/s v meridional winds m/s optdepth optical depth unitless (=0 above layer 13) cldf cloud fraction unitless (=0 above layer 13) q spec humidity kg H2O /kg air moistq q tendency w.r.t. precip. g H2O /kg air /day upde conv updraft flux Pa/s dnde conv downdraft flux Pa/s entrain conv entrainment Pa/s detraine conv detrainment Pa/s updn conv updraft flux (for non-entraining plume) dndn conv downdraft flux (for non-entraining plume) detrainn conv detrainment (for non-entraining plume)


                • i6h.gis instantaneous fields, all ixj (0, 6, 12, 18GMT)

label........field..........................units ps surface pressure mb slp sea level pressure mb


        • constant fields

label........field..........................units phis surface geopot heights m2 /s2 lwi fraction land unitless (0-1)