There are also one - piece solutions (or one - piece with a subwoofer) that offer plenty of power but don't provide the stereo imaging you get from multiple satellites. (pcmag.com)
Multiple satellite measurements and ground - based observations have determined the ozone layer has stopped declining since 1995 while temperature trends continue upwards. (skepticalscience.com)
Prigent, C., E. Matthews, F. Aires, and W.B. Rossow, 2001: Remote sensing of global wetland dynamics with multiple satellite data sets. (pubs.giss.nasa.gov)