2026-07-28T15:33:39Zhttp://nsidc.org/api/dataset/metadata/oai

oai:nsidc.org/SPL4CMDL.0082026-06-24T19:16:49Zcumulusnasa_nsidc_daac

SPL4CMDL.008SMAP L4 Global Daily 9 km EASE-Grid Carbon Net Ecosystem ExchangeKimball, J. S., Endsley, A., Jones, L. A., Kundig, T. & Reichle, R.SMAP L4 Global Daily 9 km EASE-Grid Carbon Net Ecosystem Exchange2025-04-14Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center8false10.5067/U7SN8JDZL0UChttps://nsidc.org/sites/default/files/documents/user-guide/spl4cmdl-v008-userguide_1.pdfSPL4CMDLTechnical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468

CIRES, 449 UCB

University of Colorado

BoulderCO80309-0449USAEARTH SCIENCELAND SURFACESOILSSOIL PRODUCTIVITYGROSS PRIMARY PRODUCTION (GPP) EARTH SCIENCELAND SURFACESOILSSOIL RESPIRATIONHETEROTROPHIC RESPIRATION (Rh) EARTH SCIENCELAND SURFACESOILSCARBONNET ECOSYSTEM CO2 EXCHANGE (NEE) EARTH SCIENCELAND SURFACESOILSCARBONSOIL ORGANIC CARBON (SOC) Climatology/Meteorology/AtmosphereGeoscientific InformationEASE-Grid SM-projectL4SMAP-projectSMAP-project-L4MODISModerate-Resolution Imaging SpectroradiometerNOT APPLICABLESMAP L-BAND RADIOMETERSMAP L-Band RadiometerVIIRSVisible-Infrared Imager-Radiometer SuiteAquaEarth Observing System, AquaGEOS-5Goddard EOS Data Assimilation System-5L4_CSMAP Level 4 Carbon Flux ModelSMAPSoil Moisture Active and Passive ObservatorySuomi-NPPSuomi National Polar-orbiting PartnershipTerraEarth Observing System, Terra (AM-1)2015-03-31active-85.04485.044-180180GEOGRAPHIC REGIONGLOBAL LAND9 km9 km1 daySMAP products provide multiple means to assess quality. Each product contains bit flags, uncertainty measures, and file-level metadata that provide quality information. For information regarding the specific bit flags, uncertainty measures, and file-level metadata contained in this product, refer to the Data Fields and Metadata Fields documents. Each HDF5 file contains metadata with Quality Assessment (QA) metadata flags that are set by the GMAO prior to delivery to National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). A separate metadata file with an .xml file extension is also delivered to NSIDC DAAC with the HDF5 file; it contains the same information as the HDF5 file-level metadata.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/use_copyright.html. For more information on the NASA EOSDIS Data Use Policy, see https://earthdata.nasa.gov/earth-observation-data/data-use-policy.EnglishNASA/GSFC/SED/ESD/GMAONASA 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

BoulderCO80309-0449USAHTTPSHDF5Baldocchi, D. 2008. Breathing of the Terrestrial Biosphere: Lessons Learned from a Global Network of Carbon Dioxide Flux Measurement Systems. Austr. J. Bot. 56: 1-26. Brodzik, M. J., B. Billingsley, T. Haran, B. Raup, and M. H. Savoie. 2012. EASE-Grid 2.0: Incremental but Significant Improvements for Earth-Gridded Data Sets. ISPRS Int. J. Geo-Inf. 1(1):32-45. http://dx.doi.org/10.3390/ijgi1010032. Brodzik, M. J., B. Billingsley, T. Haran, B. Raup, and M. H. Savoie. 2014. Correction: Brodzik, M. J. et al. EASE-Grid 2.0: Incremental but Significant Improvements for Earth-Gridded Data Sets. ISPRS Int. J. Geo-Inf 2012. 1(1):32-45 ISPRS Int. J. Geo-Inf. 3(3):1154-1156. http://dx.doi.org/10.3390/ijgi3031154. Chen, B., N. C. Coops, D. Fu et al. 2012. Characterizing Spatial Representativeness of Flux Tower Eddy-Covariance Measurements across the Canadian Carbon Prgram Network Using Remote Sensing and Footprint Analysis. Rem. Sens. Environ. 124:742-755. Dargaville, R. A. D. McGuire, and P. Rayner. 2002. Estimates of Large-Scale Fluxes in High Latitudes from Terrestrial Biosphere Models and an Inversion of Atmospheric CO2 Measurements. Climatic Change 55:273–285. Denman, K. L., G. Brasseur, A. Chidthaisong, P. Ciais, P. M. Cox, R. E. Dickinson, D. Hauglustaine, C. Heinze, E. Holland, D. Jacob, U. Lohmann, S. Ramachandran, P. L. da Silva Dias, S. C. Wofsy, and X. Zhang. 2007. Couplings Between Changes in the Climate System and Biogeochemistry. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K. B. Averyt, M. Tignor, and H. L. Miller (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA. Entekhabi, D. et al. 2014. SMAP Handbook–Soil Moisture Active Passive: Mapping Soil Moisture and Freeze/Thaw from Space. Pasadena, CA USA: SMAP Project, JPL CL#14-2285, Jet Propulsion Laboratory. Glassy, J., J. S. Kimball, L. Jones, R. H., Reichle, R. A. Lucchesi, J. V. Ardizzone, G.-K. Kim, and B. H. Weiss. 2016. Soil Moisture Active Passive (SMAP) Mission Level 4 Carbon (L4_C) Product Specification Document. GMAO Office Note No. 11, Version 2.0. NASA Goddard Space Flight Center, Greenbelt, MD, USA. (SMAP_L4C_PSD_v2_0_20160421.pdf, 1.3 MB) Houghton, R. A. 2003. Why are Estimates of the Terrestrial Carbon Balance so Different? Global Change Biol. 9:500-9. Ise, T., and P. R. Moorcroft. 2006. The Global-Scale Temperature and Moisture Dependencies of Soil Organic Carbon Decomposition: An Analysis Using a Mechanistic Decomposition Model. Biogeochemistry 80: 217–231. Jackson, T. J., J. S. Kimball, R. Reichle, W. Crow, A. Colliander, and E. Njoku. 2011. SMAP Science Calibration and Validation Plan. SMAP Science Document, No. 014, Version 1.2 (Preliminary Release), JPL D-52544:1-93. Kim, Y., J. Kimball, K. Zhang, K. McDonald. 2012. Satellite Detection of Increasing Northern Hemisphere Non-Frozen Seasons from 1979 to 2008: Implications for Regional Vegetation Growth. Remote Sens. Environ., 121:472-487. Kimball, J. S., Jones L. A., Zhang K., Heinsch F. A., McDonald K. C., and Oechel W. C. 2009. A Satellite Approach to Estimate Land-Atmosphere CO2 Exchange for Boreal and Arctic Biomes using MODIS and AMSR-E. IEEE Geosci. Remote Sens. 47:569-87. Kimball, J. S., L. A. Jones, J. P. Glassy, and R. Reichle. 2014. SMAP Algorithm Theoretical Basis Document, Release A: L4 Carbon Product. SMAP Project, JPL D-66484, Jet Propulsion Laboratory, Pasadena CA. 76 pp. (271_L4_C_RevA_web.pdf, 2.7 MB) Kimball, J. S., L. A. Jones, J. Glassy, E. N. Stavros, N. Madani, R. H. Reichle, T. Jackson, and A. Colliander. 2015. Soil Moisture Active Passive (SMAP) Project Calibration and Validation for the L4_C Beta-Release Data Product. NASA/TM–2015-104606, 42:1-37. (Kimball806.pdf, 13.7 MB) Kimball, J. S., L. A. Jones, J. Glassy, E. N. Stavros, N. Madani, R. H. Reichle, T. Jackson, and A. Colliander. 2016. Soil Moisture Active Passive (SMAP) Mission Assessment Report for the Version 2 Validated Release L4_C Data Product. GMAO Office Note No. 13 (Version 1.0):1-37. NASA Goddard Space Flight Center, Greenbelt, MD, USA. (SMAP-Validation_Report_L4_C_20160421.pdf, 2.25 MB) National Research Council (NRC). 2007. Earth Science and Applications from Space: National Imperatives for the Next Decade and Beyond (Executive Summary). National Academy of Sciences, National Academies Press, Washington DC. 1-35. http://www.nap.edu/catalog/11820.html. Parton, W. J., D. S. Schimel, C. V. Cole, and D. S. Ojima. 1987. Analysis of Factors Controlling Soil Organic Matter Levels in Great Plains Grasslands. Soil Sci. Soc. Am. J. 51: 1173–1179. Piao, S., P. Ciais, P. Friedlingstein, P. Peylin, M. Reichstein, S. Luyssaert, H. Margolis, J. Fang, A. Barr, A. Chen, A. Grelle, D. Y. Hollinger, T. Laurila, A. Lindroth, A. D. Richardson, and T. Vesala, 2007. Net Carbon Dioxide Losses of Northern Ecosystems in Response to Autumn Warming. Nature 451:49-52, http://dx.doi.org/doi:10.1038/nature06444. Potter, C. S., J. T. Randerson, C. B. Field, P. A. Matson, P. M. Vitousek, H. A. Mooney, and S. A. Klooster. 1993. Terrestrial Ecosystem Production: A Process Model Based on Global satellite and Surface Data. Global Biogeochemical Cycles 7(4):811-841. Richardson, A. D., D. Y. Hollinger. 2005. Statistical Modeling of Ecosystem Respiration Using Eddy Covariance Data: Maximum Likelihood Parameter Estimation, and Monte Carlo Simulation of Model and Parameter Uncertainty Applied to Three Simple Models. Ag. For. Meteor. 131:191-208. Richardson, A. D, M. D. Mahecha, E. Falge, et al., 2008. Statistical Properties of Random CO2 Flux Measurement Uncertainty Inferred from Model Residuals. Ag. For. Meteor. 148:38-50. Running, S. W., D. D. Baldocchi, D. P. Turner, S. T. Gower, P. S. Bakwin, and K. A. Hibbard. 1999. A Global Terrestrial Monitoring Network Integrating Tower Fluxes, Flask Sampling, Ecosystem Modeling and EOS Satellite Data. Remote Sensing of Environment 70:108-127. Yi, Y., J. S. Kimball, L. A. Jones, R. H. Reichle, R. Nemani, and H. A. Margolis. 2013. Recent Climate and Fire Disturbance Impacts on Boreal and Arctic Ecosystem Productivity Estimated Using a Ssatellite-Based Terrestrial Carbon Flux Model. J. Geophys. Res. Biogeosci. 118:1-17. Zhao, M., F. A. Heinsch, R. R. Nemani, and S. W. Running. 2005. Improvements of the MODIS Terrestrial Gross and Net Primary Production Global Data Set. Remote Sensing of Environment 95(2):164-175. Zhao, M., and S. W. Running. 2010. Drought-Induced Reduction in Global Terrestrial Net Primary Production from 2000 through 2009. Science 329(5994):940-943.

The Level-4 (L4) carbon product (SPL4CMDL) provides global gridded daily estimates of net ecosystem carbon (CO2) exchange derived using a satellite data based terrestrial carbon flux model informed by the following: Soil Moisture Active Passive (SMAP) L-band microwave observations, land cover and vegetation inputs from the Moderate Resolution Imaging Spectroradiometer (MODIS), Visible Infrared Imaging Radiometer Suite (VIIRS), and the Goddard Earth Observing System Model, Version 5 (GEOS-5) land model assimilation system. Parameters are computed using an Earth-fixed, global cylindrical 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) projection.

VIEW RELATED INFORMATIONhttps://nsidc.org/sites/default/files/documents/user-guide/spl4cmdl-v008-userguide_1.pdfSMAP L4 Global Daily 9 km EASE-Grid Carbon Net Ecosystem Exchange, Version 8 User GuideGET DATAhttps://search.earthdata.nasa.gov/search/granules?p=C3480440454-NSIDC_CPRDEarthdata SearchGET DATAhttps://nsidc.org/data/data-access-tool/SPL4CMDL/versions/8/Data Access ToolGET DATAhttps://cmr.earthdata.nasa.gov/virtual-directory/collections/C3480440454-NSIDC_CPRDHTTPSGET RELATED VISUALIZATIONhttps://worldview.earthdata.nasa.gov/?v=-203.53279034494884,2.987241956863528,1.560533905732342,102.54974195686353&l=Coastlines_15m,SMAP_L4_Mean_Net_Ecosystem_Exchange,SMAP_L4_Uncertainty_Mean_Net_Ecosystem_Exchange,SMAP_L4_Mean_Gross_Primary_Productivity,SMAP_L4_Mean_Heterotrophic_Respiration,SMAP_L4_Emult_Average,SMAP_L4_Frozen_Area,MODIS_Terra_CorrectedReflectance_TrueColor&lg=true&t=2025-09-03-T19%3A07%3A19ZWorldviewGET DATAhttps://appeears.earthdatacloud.nasa.gov/AppEEARSGET DATAhttps://earthaccess.readthedocs.io/en/stable/earthaccessCEOS IDN DIFVERSION 9.92025-04-142026-06-24NSIDCVersion SummaryChanges to this version include the recalibration of the Biome Properties Look-up Table (BPLUT) and soil organic carbon (SOC) re-initialization in response to updates to the upstream SPL4SMGP input datasets. Additionally, a major change was made to the carbon model litterfall allocation scheme. Specifically: - How litterfall is allocated to soil organic carbon (SOC) pools has changed. Previously, a fixed fraction of mean annual net primary production (NPP) was allocated each day to SOC pools. In the new version, the amount of mean annual NPP allocated will vary depending on the calendar day-of-year. A day’s allocation is determined by pre-computed weights, for each pixel and 8-day span (corresponding to the length of a VIIRS leaf area index composite), based on a semi-empirical leaf loss function derived by satellite-observed changes in leaf-area index. -The SPL4CMDL global BPLUT calibration and SOC initialization using soil moisture and soil temperature data from the latest SMAP L4SM Open Loop (OL8000) ensemble Catchment land model simulation has been revised. The revision results in a calibration that is more consistent with the ensemble SPL4SMGP inputs used in SPL4C production. -The SPL4CMDL global BPLUT calibration is now based on an entirely new dataset of eddy-covariance tower fluxes, consisting of 410 towers from across multiple, global tower networks. The quality of the flux data is also expected to be an improvement, as previous versions of SPL4CMDL were calibrated against the La Thuile/ FLUXNET2015 dataset which is known to contain some errors and excessive smoothing of the data. -The calibration of the SPL4CMDL global BPLUT parameters related to SOC decay were also updated and, in this new version, they are based on new reference data from the International Soil Carbon Network (ISCN). NSIDCMinor VersionNSIDCCurrent Version1NSIDCSpatial Reference SystemsEPSG:6933WGS 84 / NSIDC EASE-Grid 2.0 GlobalNSIDCLevel of ServiceComprehensiveNSIDCFull Dataset CitationKimball, J. S., Endsley, A., Jones, L. A., Kundig, T. & Reichle, R. (2025). <i>SMAP L4 Global Daily 9 km EASE-Grid Carbon Net Ecosystem Exchange</i>. (SPL4CMDL, Version 8). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. <a href="https://doi.org/10.5067/U7SN8JDZL0UC">https://doi.org/10.5067/U7SN8JDZL0UC</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredfalseNSIDCRelated Servicesapplication/vnd.nasa.cmr.umm+jsonfalsembeigmmt_service_55181S3213793274-NSIDC_CPRDNSIDC_CPRD8service2025-10-21T17:27:36.334Zhttps://harmony.earthdata.nasa.gov/NSIDC_CPRD_Harmony_Trajectory_SubsetterNOT PROVIDED1Harmony Transformation ServicesPrepare analysis ready data and reduce time-to-science. Achieve seamless access to data across different NASA data centers. Customization options, which vary by data set, can include spatial, temporal, and variable subsetting, as well as regridding and reformatting.https://harmony.earthdata.nasa.gov/docsVIEW RELATED INFORMATIONNASA Earthdata Harmony documentationPublicationURLhttps://nsidc.org/data/user-resources/help-center/search-order-and-customize-nsidc-daac-data-nasa-earthdata-searchVIEW RELATED INFORMATIONSearch, order and customize NSIDC DAAC data using NASA Earthdata SearchPublicationURLhttps://nasa-openscapes.github.io/earthdata-cloud-cookbook/tutorials/Harmony.htmlVIEW RELATED INFORMATIONSubsetting NASA Earthdata using Harmony (harmony-py)PublicationURLhttps://nsidc.org/data/user-resources/help-center/harmony-api-quickstart-guide-customizing-nasa-nsidc-daac-data-earthdata-cloudVIEW RELATED INFORMATIONHarmony API Quickstart Guide: Customizing NASA NSIDC DAAC data in Earthdata CloudPublicationURLUSER SERVICESNSIDC DAAC User ServicesEmailnsidc@nsidc.orgDATA CUSTOMIZATIONDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESThis is the most current release of this service. Last updated date is unknown.DEVELOPERPUBLISHERSERVICE PROVIDERMaintenance and Development, Earth Observing System Data and Information System, Earth Observing System,Goddard Space Flight Center, NASANASA/GSFC/EOS/EOSDIS/EMDhttps://cdn.earthdata.nasa.gov/umm/service/v1.4UMM-S1.4https://harmony.earthdata.nasa.gov/docsapplication/vnd.nasa.cmr.umm+jsonfalsebookerlmmt_service_52052S3107386427-NSIDC_CPRDNSIDC_CPRD3service2024-12-03T17:04:33.698Zhttps://cmr.earthdata.nasa.gov/virtual-directory/collections/NSIDC_CPRD_HTTPS_File_SystemNOT PROVIDED1HTTPS File SystemQuickly download a few files using a web browser, or access data through a command-line utility such as WGET.https://nsidc.org/data/user-resources/help-center/nasa-earthdata-cloud-data-access-guide#anchor-download-to-a-local-computer-from-earthdata-cloudVIEW RELATED INFORMATIONNASA Earthdata Cloud Data Access GuidePublicationURLUSER SERVICESNSIDC DAAC User ServicesEmailnsidc@nsidc.orgDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESSee https://github.com/nasa/Common-Metadata-Repository/releases for more information on the latest version.DEVELOPERMaintenance and Development, Earth Observing System Data and Information System, Earth Observing System,Goddard Space Flight Center, NASANASA/GSFC/EOS/EOSDIS/EMDORIGINATORPUBLISHERSERVICE PROVIDERNASA National Snow and Ice Data Center Distributed Active Archive CenterNASA NSIDC DAACNSIDC DAAC home pagehttps://nsidc.org/daacNASA Distributed Active Archive Center (DAAC) at NSIDC home page.https://cdn.earthdata.nasa.gov/umm/service/v1.4UMM-S1.4https://cmr.earthdata.nasa.gov/virtual-directory/collections/C3480440454-NSIDC_CPRDapplication/vnd.nasa.cmr.umm+jsonfalseamy.steikermmt_service_25004S2472217299-NSIDC_CPRDNSIDC_CPRD1service2022-09-20T22:05:06.185Zs3://nsidc-cumulus-prod-protected/NSIDC_CPRD_S3NOT PROVIDED1.0NASA Earthdata Cloud (AWS S3)Access data directly from the NASA Earthdata Cloud via Amazon Web Services Simple Storage Service (AWS S3). This access option is only available when working within the us-west-2 region and requires additional AWS S3 credentials.https://nsidc.org/data/user-resources/help-center/nasa-earthdata-cloud-data-access-guideVIEW RELATED INFORMATIONNASA Earthdata Cloud Data Access GuidePublicationURLhttps://data.nsidc.earthdatacloud.nasa.gov/s3credentialsVIEW RELATED INFORMATIONAWS S3 CredentialsPublicationURLUSER SERVICESNSIDC DAAC User ServicesEmailnsidc@nsidc.orgDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESThis is the most current release of this service. Last updated date is unknown.SERVICE PROVIDERNASA National Snow and Ice Data Center Distributed Active Archive CenterNASA NSIDC DAAChttps://cdn.earthdata.nasa.gov/umm/service/v1.4UMM-S1.4https://nsidc.org/data/user-resources/help-center/nasa-earthdata-cloud-data-access-guideNSIDCRelated Toolsapplication/vnd.nasa.cmr.umm+jsonfalsefritzdimmt_tool_50907TL3010466318-NSIDC_CPRDNSIDC_CPRD5tool2026-06-24T18:30:53.034Zhttps://zenodo.org/badge/latestdoi/399867529DOWNLOAD SOFTWAREhttps://earthaccess.readthedocs.io/en/stable/DistributionURLNSIDC_CPRD_EARTHACCESSDownloadable Tool0.18.0earthaccessearthaccess is a python library to search and access NASA Earth science data with just a few lines of code.https://github.com/earthaccess-dev/earthaccessVIEW RELATED INFORMATIONGitHub RepositoryPublicationURLDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA SEARCHDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESPUBLISHERNSIDC DAAC User ServicesEmailnsidc@nsidc.orgPUBLISHERNASA National Snow and Ice Data Center Distributed Active Archive Centerhttps://nsidc.org/daac/NASA NSIDC DAACPUBLISHERNational Snow and Ice Data Centerhttp://nsidc.orgNSIDCDEVELOPERAlaska Satellite Facilityhttps://www.asf.alaska.edu/ASFDEVELOPERInstitute for the Study of Earth, Oceans, and Space, University of New Hampshirehttp://www.eos.unh.edu/UNH/EOSDEVELOPERAtmospheric Science Data Center, Science Directorate, Langley Research Center, NASAhttps://asdc.larc.nasa.gov/NASA/LARC/SD/ASDCMIT License Copyright (c) 2021 Luis Lopez Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.2026-05-12T00:00:00.000ZAs a condition of use, we request that you properly cite the earthaccess library to acknowledge the creators. Formal citations also make it easier for us to track the use and impact of our data and tools, and helps us report data distribution activity and tool usage metrics to funding agencies. If you have used earthaccess in your research, please cite as: Barrett, A., Battisto, C., Bourbeau, J., Fisher, M., Kaufman, D., Kennedy, J., Lopez, L., Lowndes, J., Scheick, J., & Steiker, A. (2024). earthaccess (Version 0.9.0) [Computer software]. https://doi.org/10.5281/zenodo.8365009 See https://github.com/nsidc/earthaccess/releases for more information on the latest version.https://cdn.earthdata.nasa.gov/umm/tool/v1.0UMM-T1.0Python3.8 or higherhttps://earthaccess.readthedocs.io/en/stable/application/vnd.nasa.cmr.umm+jsonfalsecrumlydmmt_tool_12918TL4019507017-NSIDC_CPRDNSIDC_CPRD1tool2026-02-11T17:41:04.319ZGOTO WEB TOOLhttps://appeears.earthdatacloud.nasa.gov/DistributionURLNSIDC_CPRD_APPEEARSWeb User Interface1AppEEARSExtract point and area samples from geospatial data via spatial, temporal, and/or parameter subsetting. Preview and interact with samples before downloading. The Application for Extracting and Exploring Analysis Ready Samples tool is only available for select NSIDC data products.https://nsidc.org/support/how/extract-point-and-area-data-samples-using-appeearsVIEW RELATED INFORMATIONHow to extract point and area dataPublicationURLDATA VISUALIZATIONDATA ANALYSIS AND VISUALIZATIONEARTH SCIENCE SERVICESDATA ANALYSISDATA ANALYSIS AND VISUALIZATIONEARTH SCIENCE SERVICESDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA SEARCHDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESGEOGRAPHIC INFORMATION SYSTEMSDATA ANALYSIS AND VISUALIZATIONEARTH SCIENCE SERVICESDATA INTEROPERABILITYDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA REFORMATTINGDATA CUSTOMIZATIONDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESREPROJECTIONSUBSETTING/SUPERSETTINGDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESSPATIAL SUBSETTINGSUBSETTING/SUPERSETTINGDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESTEMPORAL SUBSETTINGSUBSETTING/SUPERSETTINGDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESVARIABLE SUBSETTINGSERVICE PROVIDERLP DAAC User ServicesEmailLPDAAC@usgs.govDEVELOPERPUBLISHERSERVICE PROVIDERLand Processes Distributed Active Archive Centerhttps://lpdaac.usgs.gov/LP DAACThis is the most current release of this tool. Last updated date is unknown.https://cdn.earthdata.nasa.gov/umm/tool/v1.0UMM-T1.0HDF-EOS2HDF5CSVGEOTIFFHDF-EOS2HDF5JSONhttps://appeears.earthdatacloud.nasa.gov/application/vnd.nasa.cmr.umm+jsonfalsecrumlydmmt_tool_12314TL4019511337-NSIDC_CPRDNSIDC_CPRD1tool2026-02-11T17:42:34.275ZGOTO WEB TOOLhttps://nsidc.org/data/data-access-tool/DistributionURLNSIDC_CPRD_Data_Access_ToolWeb User Interface3.1.0Data Access ToolFilter files before downloading based on date, spatial area, or file name. Choose from various download options, such as Python script. Export bounding boxes as a GeoJSON.https://nsidc.org/support/how/search-filter-and-order-nsidc-dataVIEW RELATED INFORMATIONHow to filter and order from a data set web pagePublicationURLhttps://nsidc.org/data/user-resources/help-center/how-to-use-earthdata-downloadVIEW RELATED INFORMATIONHow to use Earthdata DownloadPublicationURLDATA SEARCHDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESSERVICE PROVIDERNSIDC User ServicesEmailnsidc@nsidc.orgDEVELOPERPUBLISHERSERVICE PROVIDERNASA National Snow and Ice Data Center Distributed Active Archive Centerhttps://nsidc.org/daac/NASA NSIDC DAAC2025-04-16T00:00:00.000ZChromeFirefoxSafariSee https://github.com/nsidc/data-access-tool-ui/blob/main/CHANGELOG.md for more information on the latest version.https://cdn.earthdata.nasa.gov/umm/tool/v1.0UMM-T1.0https://nsidc.org/data/data-access-tool/SPL4CMDL/versions/8/application/vnd.nasa.cmr.umm+jsonfalsecrumlydmmt_tool_12821TL4019517520-NSIDC_CPRDNSIDC_CPRD1tool2026-02-11T17:45:02.724ZGOTO WEB TOOLhttps://search.earthdata.nasa.gov/searchDistributionURLNSIDC_CPRD_NASA_Earthdata_SearchWeb User Interface1NASA Earthdata SearchSearch and order data from all NASA DAACs using spatial and temporal filters in a map interface. Reformatting, reprojecting, and subsetting options are available for some data sets.https://nsidc.org/support/how/search-order-and-customize-nsidc-daac-data-nasa-earthdata-searchVIEW RELATED INFORMATIONHow to search, order, and customize data with NASA Earthdata SearchPublicationURLDATA VISUALIZATIONDATA ANALYSIS AND VISUALIZATIONEARTH SCIENCE SERVICESDATA SEARCHDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESSERVICE PROVIDERNSIDC DAAC User ServicesEmailnsidc@nsidc.orgSERVICE PROVIDEREarthdata Service DeskEmailsupport@earthdata.nasa.govAUTHORDEVELOPERORIGINATORPUBLISHERMaintenance and Development, Earth Observing System Data and Information System, Earth Observing System,Goddard Space Flight Center, NASAhttp://newsroom.gsfc.nasa.gov/NASA/GSFC/EOS/EOSDIS/EMDChromeFirefoxSafariThis is the most current release of this tool.https://cdn.earthdata.nasa.gov/umm/tool/v1.0UMM-T1.0https://search.earthdata.nasa.gov/search/granules?p=C3480440454-NSIDC_CPRDapplication/vnd.nasa.cmr.umm+jsonfalsecrumlydmmt_tool_12447TL4019526230-NSIDC_CPRDNSIDC_CPRD1tool2026-02-11T17:47:57.097ZGOTO WEB TOOLhttps://worldview.earthdata.nasa.gov/DistributionURLNSIDC_CPRD_WORLDVIEWWeb User Interface1NASA WorldviewBrowse and display global satellite imagery layers from NASA GIBS. Download raw data, share screenshots, and create animations from the imagery.https://nsidc.org/support/how/visualize-and-download-nsidc-data-nasa-worldviewVIEW RELATED INFORMATIONHow to visualize and download data with NASA WorldviewPublicationURLDATA VISUALIZATIONDATA ANALYSIS AND VISUALIZATIONEARTH SCIENCE SERVICESDATA SEARCHDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA INTEROPERABILITYDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESDATA REFORMATTINGDATA CUSTOMIZATIONDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESGEOGRAPHIC INFORMATION SYSTEMSDATA ANALYSIS AND VISUALIZATIONEARTH SCIENCE SERVICESSERVICE PROVIDERNSIDC User Services OfficeEmailnsidc@nsidc.orgSERVICE PROVIDERWorldviewEmailsupport@earthdata.nasa.govDEVELOPERPUBLISHERSERVICE PROVIDERMaintenance and Development, Earth Observing System Data and Information System, Earth Observing System,Goddard Space Flight Center, NASAhttp://newsroom.gsfc.nasa.gov/NASA/GSFC/EOS/EOSDIS/EMDSee https://github.com/nasa-gibs/worldview/releases for more information on the latest version.https://cdn.earthdata.nasa.gov/umm/tool/v1.0UMM-T1.0GEOTIFFGIFJPEGKMLPNGhttps://worldview.earthdata.nasa.gov/?v=-203.53279034494884,2.987241956863528,1.560533905732342,102.54974195686353&l=Coastlines_15m,SMAP_L4_Mean_Net_Ecosystem_Exchange,SMAP_L4_Uncertainty_Mean_Net_Ecosystem_Exchange,SMAP_L4_Mean_Gross_Primary_Productivity,SMAP_L4_Mean_Heterotrophic_Respiration,SMAP_L4_Emult_Average,SMAP_L4_Frozen_Area,MODIS_Terra_CorrectedReflectance_TrueColor&lg=true&t=2025-09-03-T19%3A07%3A19Z