International Satellite Cloud Climatology Project (ISCCP) Monthly Means
Stage C2 data.SOURCE: Data Support Section Dataset ds742.1 FORMAT: CCM1 History Tape GRID: Global - T42 Gaussian (128 x 64) and 2.5 degree (144 x 72) LEVELS: Single Level FIELDS: Description Name Units ---------------------------------------------------------------- Latitude index* (equal-area) ISCCP01 Longitude index* (equal-area) ISCCP02 Lower-longitude index* (2.5 dg) ISCCP03 Upper-longitude index* (2.5 dg) ISCCP04 Land/water/coast code* ISCCP05 00-21 UTC: No. of days in average* (day+night) ISCCPO6 UTC All: No. of UTCs in average* (day+night) 00-21 UTC: No. of days in average* (day) ISCCP07 UTC All: No. of UTCs in average* (day) Mean frequency of cloudy pixels (A2,A6) ISCCP08 % 00-21 UTC: No. of days with cloudy pixels ISCCP09 UTC All: Mean frequency of cloudy days Marginal VIS/IR cloud amount ISCCP10 % Mean PC for cloudy pixels (A1,A2,A6) ISCCP11 mb Time SIGMA PC for IR cloudy pixels ISCCP12 mb Mean space SIGMA PC for IR cloudy pixels ISCCP13 mb Mean TC for cloudy pixels (A1,A2,A4,A6) ISCCP14 K Time SIGMA TC for IR cloudy pixels ISCCP15 K Mean space SIGMA TC for IR cloudy pixels ISCCP16 K Mean TAU for VIS/IR cloudy pixels (A3,A4,A6) ISCCP17 Time SIGMA TAU for VIS/IR cloudy pixels D ISCCP18 Mean space SIGMA TAU for VIS/IR cloudy pixels D ISCCP19 Mean PATH for VIS/IR cloudy pixels ISCCP20 1/gm*gm Time SIGMA PATH for VIS/IR cloudy pixels D ISCCP21 Mean space SIGMA PATH for VIS/IR cloudy pixelsD ISCCP22 Average frequency of low-level cloudiness ISCCP23 % Average PC of low-level cloudiness ISCCP24 mb Average TC of low-level cloudiness ISCCP25 K Average frequency of middle-level cloudiness ISCCP26 % Average PC of middle-level cloudiness ISCCP27 mb Average TC of middle-level cloudiness ISCCP28 K Average frequency of high-level cloudiness ISCCP29 % Average PC of high-level cloudiness ISCCP30 mb Average TC of high-level cloudiness ISCCP31 K Average frequency of cumulus cloudiness D ISCCP32 % Average PC of cumulus cloudiness D ISCCP33 mb Average TC of cumulus cloudiness D ISCCP34 K Average TAU of cumulus cloudiness D ISCCP35 Average frequency of stratus cloudiness D ISCCP36 % Average PC of stratus cloudiness D ISCCP37 mb Average TC of stratus cloudiness D ISCCP38 K Average TAU of stratus cloudiness D ISCCP39 Average frequency of altocumulus cloudiness D ISCCP40 % Average PC of altocumulus cloudiness D ISCCP41 mb Average TC of altocumulus cloudiness D ISCCP42 K Average TAU of altocumulus cloudiness D ISCCP43 Average frequency of nimbostratus cloudiness D ISCCP44 % Average PC of nimbostratus cloudiness D ISCCP45 mb Average TC of nimbostratus cloudiness D ISCCP46 K Average TAU of nimbostratus cloudiness D ISCCP47 Average frequency of cirrus cloudiness D ISCCP48 % Average PC of cirrus cloudiness D ISCCP49 mb Average TC of cirrus cloudiness D ISCCP50 K Average TAU of cirrus cloudiness D ISCCP51 Average frequency of cirrostratus cloudiness D ISCCP52 % Average PC of cirrostratus cloudiness D ISCCP53 mb Average TC of cirrostratus cloudiness D ISCCP54 K Average TAU of cirrostratus cloudiness D ISCCP55 Av. frequency of deep convective cloudiness D ISCCP56 % Average PC of deep convective cloudiness D ISCCP57 mb Average TC of deep convective cloudiness D ISCCP58 K Average TAU of deep convective cloudiness D ISCCP59 Mean TS from clear sky composite (A4,A6) ISCCP60 K Time SIGMA TS from clear sky composite ISCCP61 K Mean RS from clear sky composite (A4,A5) ISCCP62 % Mean snow/ice cover ISCCP63 % Surface pressure (TOVS) ISCCP64 mb Near-surface air temperature(TOVS extrapolated) ISCCP65 K Temperature at 500 mb (TOVS) ISCCP66 K Tropopause pressure (TOVS) ISCCP67 mb Tropopause temperature (TOVS) ISCCP68 K Stratosphere temperature at 15 mb ISCCP69 K Precipitable water -- column (TOVS) ISCCP70 cm Ozone -- column (TOVS) ISCCP71 Dobson Average frequency of cloudy pixels--unadjusted ISCCP72 % Definitions: * 2.5 degree gridded data only D Present only during local daytime TAU optical thickness PATH cloud water path PC cloud-top pressure TC cloud-top temperature TS surface temperature RS surface reflectance SIGMA standard deviation over space or time domains Adjustments A1,A2,A3,A4,A5, and A6 (see Comments) TIMES: One mean per month averaged over all times or specific times of day. MSS Directory: /CTSAT/ISCCP/OLD_1991/C2/T42/CCM1H/ (T42 grid) /CTSAT/ISCCP/OLD_1991/C2/2.5DG/CCM1H/ (2.5 degree grid) Filename: times/yymm where times = ALL for average over all times or 00UTC,03UTC,06UTC,09UTC,12UTC,15UTC,18UTC,21UTC for averages for specific times (hour-monthly means); yy=year, mm=month One mean per file. e.g. 00UTC/8307 for the hour-monthly mean for July 1983 00 hours UTC. Current holdings: July 1983 - June 1991
Other Products Derived from this Dataset:
Comments on Data
Please use the ccm2nc software to convert ccm history tape format to netCDF.
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