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AIRS moves climate research and weather prediction into the 21st century. AIRS is one of six instruments on board the Aqua satellite, part of the NASA Earth Observing System. AIRS along with its partner microwave instrument the Advanced Microwave Sounding Unit AMSU-A, represents the most advanced atmospheric sounding system ever deployed in space. Together these instruments observe the global water and energy cycles, climate variation and trends, and the response of the climate system to increased greenhouse gases.
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This data repository provides access to tropopause parameters estimated from meteorological reanalyses. The tropopause data sets provided on this web site have been created using meteorological reanalyses distributed by the European Centre for Medium-Range Weather Forecasts (ECMWF), the National Aeronautics and Space Administration (NASA), the National Center for Atmospheric Research (NCAR), and the National Centers for Atmospheric Prediction (NCEP). Currently, the repository covers ERA-Interim, MERRA-2, and the NCEP/NCAR Reanalysis 1 for the time period from 2000 to 2018 and ERA5 from 2009 to 2018. The tropopause data files provide geopotential height, pressure, temperature, and water vapor volume mixing ratio for the WMO 1st and 2nd tropopause, the cold point, and the dynamical tropopause.