What the density of the troposphere? - Answers The steady decrease in temperature with altitude in the troposphere is called the environmental lapse rate This is due to the decreasing pressure and density of the air as altitude increases
Delay Doppler Mapping Instrument | NASA Earthdata The Delay Doppler Mapping Instrument (DDMI) is the single instrument aboard the eight individual satellites comprising NASA’s Cyclone Global Navigation Satellite System (CYGNSS) constellation Each DDMI contains both a traditional Global Positioning System (GPS) navigation receiver integrated with a reflections processor
Shuttle Radar Topography Mission (SRTM) | NASA Earthdata The Shuttle Radar Topography Mission (SRTM) payload flew aboard the Space Shuttle Endeavour during the STS-99 mission SRTM collected topographic data over nearly 80% of Earth's land surfaces, creating the first-ever near-global dataset of land elevations
Microwave Limb Sounder (MLS) | NASA Earthdata NASA's MLS instrument is a passive microwave radiometer spectrometer that measures microwave thermal emission from the limb of Earth’s atmosphere to sense vertical profiles of atmospheric gases, temperature, pressure, and cloud ice