NSIDC DAAC is currently upgrading our data ingest process for NASA Earthdata Cloud. During this transition, users may notice temporary interruptions in data availability or notice small data gaps. All gaps will be resolved as quickly as possible. During this upgrade jpeg browse imagery will also not be available for preview in Earthdata search. Please reach out to NSIDC User Services with any questions or concerns.
The NSIDC DAAC is retiring access to its legacy, on-premises data archive and transitioning to the NASA Earthdata Cloud as the primary data archive. View planned retirement dates here.
A more recent version of these data is currently available from 04 Dec 2023 through the present. Data from 31 March 2015 through December 2023 will become available as part of this newer version as they are reprocessed. There may be gaps in the reprocessed time series that will be filled in as they are identified. Once this reprocessing is complete, this version will be retired.
Data Citation and Acknowledgment
As a condition of using these data, you must cite the use of this data set. Such a practice gives credit to data set producers and advances principles of transparency and reproducibility.
Other standard citation formats may be found on the DOI Citation Formatter website (paste 10.5067/LPJ8F0TAK6E0 into the top form field).
Describing subset: When applicable, include the information a reader would need to extract the same subset at the end of your citation. If multiple or complex steps were incolved, it may be more appropriate to include this information in the paper itself.
See our Citation Policies for more details about how to structure your data citation.
Literature references: Please include the following literature citations in addition to the data citation above:
Chan, S., Bindlish, R., O'Neill, P. E., Njoku, E. G., Jackson, T., Colliander, A., Chen, F., Burgin, M., Dunbar, S., Piepmeier, J. R., Yueh, S., Entekhabi, D., Cosh, M., Caldwell, T., Walker, J., Berg, A., Rowlandson, T., Pacheco, A., McNairn, H., Thibeault, M., Martinez-Fernandez, J., González-Zamora, A., Bosch, D., Starks, P., Goodrich, D., Prueger, J., Palecki, M., Small, E. E., Zreda, M., Calvet, J., Crow, W. T. & Kerr, Y.. 2016. Assessment of the SMAP passive soil moisture product. IEEE Transactions on Geoscience and Remote Sensing. 54. DOI: 10.1109/TGRS.2016.2561938.