Nimbus-7 Cloud Matrix (CMATRIX) Long-Term Means
Climatologies for each month have been produced from the six years of CMATRIX data, so January through March averages include the years 1980--1985, while the other nine months include 1979--1984. All of the fields have been averaged, except for the SIGMA fields. No attempt has been made to correct for possible biases introduced into the data, so the following fields should be used with caution.SOURCE: CMATRIX Monthly Means FORMAT: netCDF GRID: Global - 4.5 degree LEVELS: Single Level FIELDS: Description Name Units --------------------------------------------------------------------------- Total percent cloudiness A TOTCLDUP % Mean time SIGMA of total cloudiness A STOTCLUP % Percent low cloudiness A LOWCLDUP % Mean time SIGMA of low cloudiness A SLOWCUP % Percent mid cloudiness A MIDCLDUP % Mean time SIGMA of mid cloudiness A SMIDCUP % Percent high cloudiness A HICLDUP % Mean time SIGMA of high cloudiness A SHICUP % Total percent cloudiness A IR only TOTCIRUP % Mean time SIGMA of total cloudiness A IR only STOTCIRU % Radiance for total cloud A RADCLDUP W/m^2*str Mean time SIGMA of radiance for total cloud A SRADCLUP W/m-2*str Radiance for low cloud A RADLOWUP W/m^2*str Mean time SIGMA of radiance for low cloud A SRADLWUP W/m^2*str Radiance for mid cloud A RADMIDUP W/m^2*str Mean time SIGMA of radiance for mid cloud A SRADMDUP W/m^2*str Radiance for high cloud A RADHIUP W/m^2*str Mean time SIGMA of radiance for high cloud A SRADHIUP W/m^2*str Radiance for clear sky A RADCLRUP W/m^2*str Mean time SIGMA of radiance for clear sky A SRADCLRU W/m^2*str Percent high cirrus detected HICIRRUS % Total percent cloudiness D TOTCLDDN % Mean time SIGMA of total cloudiness D STOTCLDN % Percent low cloudiness D LOWCLDDN % Mean time SIGMA of low cloudiness D SLOWCDN % Percent mid cloudiness D MIDCLDDN % Mean time SIGMA of mid cloudiness D SMIDCDN % Percent high cloudiness D HICLDDN % Mean time SIGMA of high cloudiness D SHICDN % Radiance for total cloud D RADCLDDN W/m^2*str Mean time SIGMA of radiance for total cloud D SRADCLDN W/m^2*str Radiance for low cloud D RADLOWDN W/m^2*str Mean time SIGMA of radiance for low cloud D SRADLWDN W/m^2*str Radiance for mid cloud D RADMIDDN W/m^2*str Mean time SIGMA of radiance for mid cloud D SRADMDDN W/m^2*str Radiance for high cloud D RADHIDN W/m^2*str Mean time SIGMA of radiance for high cloud D SRADHIDN W/m^2*str Radiance for clear sky D RADCLRDN W/m^2*str Mean time SIGMA of radiance for clear sky D RADCLRD W/m^2*str Total percent cloudiness Avg of A and D TOTCLD % Total percent cloudiness A-D DIFTOTCL % Percent low cloudiness Avg of A and D LOWCLD % Percent low cloudiness A-D DIFLOWCL % Percent mid cloudiness Avg of A and D MIDCLD % Percent mid cloudiness A-D DIFMIDCL % Percent high cloudiness Avg of A and D HICLD % Percent high cloudiness A-D DIFHICLD % Radiance for total cloud Avg of A and D RADCLD W/m^2*str Radiance for total cloud A-D DIFRADCL W/m^2*str Radiance for low cloud Avg of A and D RADLOW W/m^2*str Radiance for low cloud A-D DIFRADLW W/m^2*str Radiance for mid cloud Avg of A and D RADMID W/m^2*str Radiance for mid cloud A-D DIFRADMD W/m^2*str Radiance for high cloud Avg of A and D RADHI W/m^2*str Radiance for high cloud A-D DIFRADHI W/m^2*str Radiance for clear sky Avg of A and D RADCLR W/m^2*str Radiance for clear sky A-D DIFRDCLR W/m^2*str Air Force surface temperature A SURTEMPU K Air Force surface temperature D SURTEMPD K Definitions: A ascending (near local-noon) observations D descending (near local-midnight) observations The radiances listed are in units of 0.125 W/m^2*str. TIMES: Average of a given month over several years. MSS Directory: /CTSAT/N7CMAT/4.5DG/SAVTAV/ (4.5 degree grid) Filename: MMMy1y2.nc where MMM=month, y1=starting year, y2=ending year One mean per file. e.g. JAN7985.nc for mean of Januaries 1979-1985 Current holdings: -------------------------------- /CTSAT/N7CMAT/4.5DG/SAVTAV/JAN7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/FEB7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/MAR7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/APR7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/MAY7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/JUN7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/JUL7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/AUG7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/SEP7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/OCT7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/NOV7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/DEC7985.nc /CTSAT/N7CMAT/4.5DG/SAVTAV/4.5DG_APR79MAR85_CLIMATOLOGY.nc
Other Products Derived from this Dataset:
Comments on Data
Please use the ccm2nc software to convert ccm history tape format to netCDF.
References
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