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Please note that ISCCP data processing is now performed at NOAA/NCEI.
Please visit the NOAA/NCEI website for access to ISCCP H data products and other up-to-date information.

Global Weather States from ISCCP D1 Cloud Dataset

The optimum cluster centroids are identified for K=11 as shown below.

Mean PC-τ plots for the global domain
Figure 1: Mean PC-τ plots for the global domain

Geographic distribution of Weather States for the global domain
Figure 2: Geographic distribution of Weather States for the global domain

To download ISCCP global, 3-hourly weather state (WS) data, click here.

Get the binary file isccp_d1-gws_1983-2009.tar and the FORTRAN read program in ASCII read_o2_ISCCP_GWS.f. Untar of isccp_d1-gws_1983-2009.tar to get 27 data files named o2_dw_GL_8309_43.YYYY, where YYYY=1983 .. 2009. Use read_o2_ISCCP_GWS.f to read GWS values for your needs.


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