2026-05-22T20:50:30Zhttp://nsidc.org/api/dataset/metadata/oai

oai:nsidc.org/NSIDC-0451.0032026-05-21T11:37:49Zv0_daacv0_allnasa_nsidc_daac

NSIDC-0451.003Daily Global Land Parameters Derived from AMSR-E and AMSR2Du, J. & Kimball, J. S.Daily Global Land Parameters Derived from AMSR-E and AMSR22021-08-04Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center3false10.5067/WPXUQ72A4484https://doi.org/10.5067/WPXUQ72A4484NSIDC-0451Du, J., Kimball, J. S., Jones, L. A., Kim, Y., Glassy, J. & Watts, J. D.2017Earth System Science Data 92791-808<a href="https://doi.org/10.5194/essd-9-791-2017">https://doi.org/10.5194/essd-9-791-2017</a>Literature CitationTechnical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468

CIRES, 449 UCB

University of Colorado

BoulderCO80309-0449USAEARTH SCIENCEATMOSPHEREATMOSPHERIC TEMPERATURESURFACE TEMPERATUREAIR TEMPERATURE EARTH SCIENCELAND SURFACESOILSSOIL MOISTURE/WATER CONTENT EARTH SCIENCETERRESTRIAL HYDROSPHERESURFACE WATER EARTH SCIENCEATMOSPHEREATMOSPHERIC WATER VAPORWATER VAPOR INDICATORSTOTAL PRECIPITABLE WATER EARTH SCIENCEBIOSPHEREVEGETATIONVEGETATION INDEX Climatology/Meteorology/AtmosphereAMSR-E-related projectAMSR-EAdvanced Microwave Scanning Radiometer-EOSAMSR2Advanced Microwave Scanning Radiometer 2AquaEarth Observing System, AquaGCOM-W1Global Change Observation Mission 1st-Water2002-06-192023-12-31complete-9090-180180GEOGRAPHIC REGIONGLOBAL LANDGEOGRAPHIC REGIONGLOBAL25 km25 km1 day25 km25 kmThe data are appropriate for global change related assessment of land-atmosphere water, energy and carbon cycle interactions. Although extensive quality checking has been completed, these are research data and the user is responsible for their own quality checking and should be aware that spurious values may exist. The authors hold no responsibly for conclusions drawn from spurious data. We appreciate constructive and well-documented feedback to help make these data more useful. Questions and feedback should be sent to Lucas Jones (lucas@ntsg.umt.edu).These data are freely, openly, and fully accessible, provided that you are logged into your NASA Earthdata profile (https://urs.earthdata.nasa.gov/).These data are freely, openly, and fully available to use without restrictions, provided that you cite the data according to the recommended citation at https://nsidc.org/about/data-use-and-copyright. For more information on the NASA ESDIS Data Use Guidance, see https://www.earthdata.nasa.gov/engage/open-data-services-software-policies/data-use-guidance.EnglishUMTNASA NSIDC DAACNASA National Snow and Ice Data Center Distributed Active Archive Centerhttps://nsidc.org/daacData Center ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-6199

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

BoulderCO80309-0449USAHTTPSGeoTIFFDu, J., J.S. Kimball, L.A. Jones, Y. Kim, J. Glassy, and J.D. Watts. 2017. A global satellite environmental data record derived from AMSR E and AMSR2 microwave earth observations, 2017. Earth System Science Data , 9, 791 808. https://doi. org/10.5194/essd 9 791 2017

This data set contains satellite-retrieved geophysical parameter files generated from the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument on the National Aeronautics and Space Administration (NASA) Aqua satellite and the Advanced Microwave Scanning Radiometer 2 (AMSR2) sensor on the JAXA GCOM-W1 satellite. The geophysical parameters include daily air surface temperature, fractional open water cover estimates, vegetation optical depth, surface volumetric soil moisture, and atmosphere total column precipitable water vapor. The global retrievals were derived over land for non-precipitating, non-snow, and non-ice covered conditions.

VIEW RELATED INFORMATIONhttps://doi.org/10.5067/WPXUQ72A4484User's GuideGET DATAhttps://daacdata.apps.nsidc.org/pub/DATASETS/nsidc0451_AMSRE_AMSR2_Land_Parms_v03/HTTPSCEOS IDN DIFVERSION 9.92021-08-042026-05-21NSIDCVersion SummaryTemporal coverage extends through 31 December 2023; Precipitable Water Vapor algorithm refined to account for cloud liquid water and surface terrain effects; Precipitable Water Vapor algorithm improved through calibration against similar AIRX2RET version 6 retrievals; Refined estimation of Tmx and Tmn considers terrain and latitude effects; Addition of daily surface atmospheric vapor pressure deficit land parameter derived from AMSR LPDR surface temperature and PWV retrievals. - X-band (10.7 GHz) retrieval improved using weighted averaging and dymanic selection of vegetation scattering albedo effects - Updated Freeze/Thaw frozen QC flag. In this version, QC flag set for a given date and pixel where frozen condition is detected from either afternoon or morning AMSR observationsNSIDCMinor Version1

Changes for this minor version update include: Replacement files for DOY 204 (Jul 22) through DOY 366 (Dec. 31) in 2016, which were reprocessed to correct an error caused by an incomplete reading of input Tb observations and new data for DOY 1 through DOY 365 in 2021 (i.e., the data set temporal coverage has been extended through the end of 2021).

2002-06-192021-12-310NSIDCCurrent Version1NSIDCSpatial Reference SystemsEPSG:3410NSIDC EASE-Grid GlobalNSIDCLevel of ServiceBasicNSIDCFull Dataset CitationDu, J. & Kimball, J. S. (2021). <i>Daily Global Land Parameters Derived from AMSR-E and AMSR2</i>. (NSIDC-0451, Version 3). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. <a href="https://doi.org/10.5067/WPXUQ72A4484">https://doi.org/10.5067/WPXUQ72A4484</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredfalseNSIDCRelated Servicesapplication/vnd.nasa.cmr.umm+jsonfalseamyygillilandmmt_service_12717S1977897447-NSIDCV0NSIDCV06service2025-04-01T22:12:52.112Zhttps://daacdata.apps.nsidc.org/NSIDCV0_DAAC_Data_HTTPS_File_SystemNOT PROVIDED1HTTPS File SystemQuickly download a few files using a web browser, or access the data through a command-line utility such as WGET.https://nsidc.org/data/user-resources/help-center/programmatic-access-guide-data-daacdataappsVIEW RELATED INFORMATIONProgrammatic Data Access GuidePublicationURLUSER SERVICESNSIDC DAAC User ServicesEmailnsidc@nsidc.orgDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESThis is the most current release of this service.DEVELOPERORIGINATORPUBLISHERSERVICE PROVIDERNASA National Snow and Ice Data Center Distributed Active Archive CenterNASA NSIDC DAACNASA Distributed Active Archive Center (DAAC) at NSIDChttps://nsidc.org/daacNSIDC DAAC Home Pagehttps://cdn.earthdata.nasa.gov/umm/service/v1.4UMM-S1.4https://daacdata.apps.nsidc.org/pub/DATASETS/nsidc0451_AMSRE_AMSR2_Land_Parms_v03/