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NOAA Climate Data Record (CDR) of Atmospheric Layer Temperatures, Version 4

Published by National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: February 10, 2026 | Last Modified: 2018-01-01T00:00:00.000+00:00
The Atmospheric Layer Temperature Climate Data Record (CDR) dataset is a monthly analysis of the tropospheric and stratospheric data using temperature sounding microwave radiometers flown on polar-orbiting weather satellites providing an important record of upper atmosphere temperatures by merging data from the older Microwave Sounding Unit (MSU) and the new Advanced Microwave Sounding Units (AMSUs). The instruments measure the brightness temperature (Tb) for each channel and corresponds to an average temperature of the atmosphere averaged over that channel's weighting function. Global average and global anomaly maps on a 2.5 x 2.5 degree resolution are produced from each month's data from both the MSU and the AMSU for over a 31 year period (1978-2011) for each channel (layer); the Temperature Lower Troposphere (TLT); the Temperature Middle Troposphere (TMT); the Temperature Troposphere/Stratosphere (TTS) ; the Temperature Lower Stratosphere (TLS). UAT 4 Layer MW data is important to continue into the future to ensure the existence of a high-quality record of atmospheric temperatures for climate change detection and climate model verification activities. The data are available in netCDF-4 file format with variables containing standard deviation, quality flags, and projection information and will be updated monthly.

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Earth Science > Spectral/Engineering > microwave > Brightness Temperature Earth Science > Spectral/Engineering > microwave > Temperature Anomalies NOAA Climate Data Record (CDR) Program NOAA OneStop Project Satellite ESSA > Environmental Science Services Administration NOAA-2 > National Oceanic & Atmospheric Administration-2 NOAA-3 > National Oceanic & Atmospheric Administration-3 NOAA-4 > National Oceanic & Atmospheric Administration-4 NOAA-5 > National Oceanic & Atmospheric Administration-5 NOAA-6 > National Oceanic & Atmospheric Administration-6 NOAA-7 > National Oceanic & Atmospheric Administration-7 NOAA-9 > National Oceanic & Atmospheric Administration-9 NOAA-11 > National Oceanic & Atmospheric Administration-11 NOAA-14 > National Oceanic & Atmospheric Administration-14 NOAA-15 > National Oceanic & Atmospheric Administration-15 SMS > Synchronous Meteorological Satellites DMSP > Defense Meteorological Satellite Program GOES > NOAA Geostationary Operational Environmental Satellites GOES-7 > Geostationary Operational Environmental Satellite 7 GOES-8 > Geostationary Operational Environmental Satellite 8 GOES-9 > Geostationary Operational Environmental Satellite 9 TIROS-N > Television Infrared Observation Satellite-N GMS > Japan Geostationary Meteorological Satellite GMS-4 > Geostationary Meteorological Satellite-4 GMS-5 > Geostationary Meteorological Satellite-5 METEOSAT METEOSAT-5 > Meteosat Operational Programme 2 (MOP-1) METEOSAT-6 > Meteosat Operational Programme 3 (MOP-1) TERRA > Earth Observing System, TERRA (AM-1) METOP > Meteorological Operational Satellite AQUA > Earth Observing System, AQUA Vas > VISSR Atmospheric Sounder SSMI/S > Special Sensor Microwave Imager/Sounder VHRR > Very High Resolution Radiometer VISSR > Visible and Infrared Spin Scan Radiometer AVHRR > Advanced Very High Resolution Radiometer SEVIRI > Spinning Enhanced Visible and Infrared Imager MODIS > Moderate-Resolution Imaging Spectroradiometer AMSR > Advanced Microwave Scanning Radiometer AMSU-B > Advanced Microwave Sounding Unit B (AMSU-B) ASCAT Geographic Region > Global Vertical Location > Stratosphere Vertical Location > Troposphere DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce

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