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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.
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This data repository provides access to gravity wave observations of the Atmospheric Infrared Sounder (AIRS) aboard NASA's Aqua satellite. Information on stratospheric gravity wave activity is derived from radiance measurements in the 4.3 and 15 micron CO2 fundamental bands. The repository provides browse images and netCDF data files for the years 2002 to 2017 and is frequently updated.
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The Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) is a community-driven climate impact modeling initiative that aims to contribute to a quantitative and cross-sectoral synthesis of the various impacts of climate change, including associated uncertainties. It is designed as a continuous model intercomparison and improvement process for climate impact models and is supported by the international climate impact research community. ISIMIP is organized into simulation rounds, for which a simulation protocol specifies a set of common experiments. The protocol further describes a set of climate and direct human forcing data to be used as input data for all ISIMIP simulations. Based on this information, modelling groups from different sectors (e.g. agriculture, biomes, water) perform simulations using various climate impact models. After the simulations are performed, the data is collected by the ISIMIP data team, quality controlled and eventually published on the ISIMIP Repository. From there, it can be freely accessed for further research and analyses. The data is widely used within academia, but also by companies and civil society. ISIMIP was initiated by the Potsdam Institute for Climate Impact Research (PIK) and the International Institute for Applied Systems Analysis (IIASA).