The next-generation Defense Meteorological Satellite Program (DMSP) satellites (Block 6) will include a minimum of five bands in the near- to long-wave infrared for passive remote sensing of clouds and the atmosphere, as well as the oceans and the land surface. Atmospheric temperature and humidity sounding are performed with microwave sounders, as with the current Block 5 system. Numerous hydrological variables are measured with a passive microwave imager, the data from which are synergistic with the infrared and visible bands. As a goal, the microwave imager provides contiguous swaths at the equator on successive orbits, to provide improved coverage of tropical storms. The present program and access to its data are also described, as is the close relationship of DMSP data to problems in global change.
David L. Glackin, David L. Glackin,
"Requirements for remote sensing with DMSP Block 6", Proc. SPIE 1934, Passive Infrared Remote Sensing of Clouds and the Atmosphere, (15 September 1993); doi: 10.1117/12.154914; https://doi.org/10.1117/12.154914