NOAA OceanWatch provides a blended sea surface temperature (SST) products derived from both microwave and infrared sensors carried on multiple platforms. The microwave instruments can measure ocean temperatures even in the presence of clouds, though the resolution is a bit coarse when considering features typical of the coastal environment. These are complemented by the relatively fine measurements of infrared sensors. The blended data are provided at moderate spatial resolution (0.1 degrees) for the Global Ocean. Measurements are gathered by Japan's Advanced Microwave Scanning Radiometer (AMSR-E) instrument, a passive radiance sensor carried aboard NASA's Aqua spacecraft, NOAA's Advanced Very High Resolution Radiometer, NOAA GOES Imager, and NASA's Moderate Resolution Imaging Spectrometer (MODIS). THIS IS AN EXPERIMENTAL PRODUCT: intended strictly for scientific evaluation by professional marine scientists.