The aim of the International Satellite Cloud Climatology Project" (ISCCP) is to develop a long-term high resolution global data set of cloud parameters. This is done under the umbrella of the "World Climate Research Programme" (WCRP) and "Gloal Energy and Water Experiment" (GEWEX). Data from different satellites sensing the atmosphere of the Earth are used to obtain cloud information which can be used to derive the global cloud coverage, their characteristics and temporal variability as well as their role in the Earths' climate system and its hydrological cycle.
The list of data which is available from ISCCP is impressive (see parameters). It depends on the data product, however. Here we offer ISCCP-D2. This is the final level-4 product with monthly temporal resolution and comprises a statistical analysis of the ISCCP-D1 data (same spatial resolution as D2 but 3-hourly temporal resolution, also available on request) which is in turn based on the ISCCP-DX data set (FOV resolution, 3-hourly); this is illustrated in the image of the processing chain.
Available parameters include (among others) coverage (total and of different cloud types), cloud top temperature and pressure, cloud droplet distribution, and opacity. An easy description for the different types of data can be found in the parameter description. More information about the data and their potential application area is given on the ISCCP data analysis web page.