Animation of SMAP launching and collecting data. SMAP will produce global maps of soil moisture. Animation from NASA/Jet Propulsion Laboratory
NASA scientists talk about the launch of the Soil Moisture Active Passive - or SMAP - satellite scheduled to launch on Jan 29. SMAP will take stock of the water hidden just beneath your feet, in the topsoil. Knowing how much water is in the soil, and whether it is frozen or thawed, has profound applications for society, from better forecasting of natural disasters like floods and droughts to helping prevent food shortages.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 188.8.131.52.0