because of low spatial resolution and simplifications in meteorological processes in global circulation models, they cannot sufficiently simulate the weather, comparing to the regional models; then, spatial and temporal downscaling of the gcm outputs are needed for decreasing errors of the global circulation models. there are two methods of downscaling: statistical and dynamic. weather generato...

This paper evaluates the effects of downscaling in compressed domain on content-based image retrieval based on experimental studies. Several experimental databases are generated based on uncompressed ones using JPEG compression and DCT-scaling. Color and texture features are used in the retrieval queries, which constitute the base for the experiments. The query results are graded subjectively, ...