VALIDATION OF RETRIEVAL ALGORITHMS FOR THE INFRARED REMOTE-SENSING OFPRECIPITATION WITH THE SARDINIAN RAIN-GAUGE NETWORK DATA

A few retrieval techniques for the estimate Of precipitation from infr ared satellite data, already tested over the tropical Atlantic Ocean a nd over continental mid-latitude regions, have been used to verify the ir performance for the study of the western Mediterranean Sea climate. An attempt to optimize these techniques has been made, and a detailed comparison of the remotely sensed network in precipitation with in si tu continuous data, obtained with the rain gauge network in Sardinia f or two significant periods of 1988, is presented. The results obtained give some useful indications on the performance of these techniques, on the best area time resolution to be used for their validation, and on the possible applications of the retrieved information.