Global monthly means were obtained from ISCCP C1 data, which is available every 3 hours at 2.5 degree equal area spatial resolution. The monthly mean maps were replicated to a 2.5 degree square grid (144 longitude boxes by 72 latitude boxes). Monthly means are provided for Cloud Amount (CLDAMT), Cloud Top Temperature (CLDTMP), Cloud Top Pressure (CLDPRS), Cloud Optical Thickness (OPTTHK), Surface Temperature (SRFTMP), and Surface Reflectance (SRFRFL).
Atmospheric Science Data Center; Link to Home Page. International Satellite Cloud Climatology Project (ISCCP) Cloud Analysis (C1 and C2) Langley Atmospheric Science Data Center Data Set Document.
Data Set Citation
Rossow, W.B., Garder, L.C., Lu, P., and Walker, A.
Global Data Base of Monthly Mean Cloud and Surface Properties