Delivery of Suomi National Polar-orbiting Partnership (Suomi NPP) satellite data products will cease on November 1, 2026. Data users should transition now to alternative products from NOAA-21 and NOAA-20. Suomi NPP data announcement

SMAP Resources

Earthdata offers a range of resources for users working with Soil Moisture Active Passive (SMAP) data. These include tutorials and other learning opportunities as well as related news, documents, and frequently asked questions.

SMAP Documents

Name Sort descending	Description	File Type	Date Published
NASA/RSS SMAP Salinity: Version 5.0 Validated Release	NASA/RSS SMAP Salinity: Version 5.0 Validated Release	PDF (6.13 mb)	June 21, 2023
NASA/RSS SMAP Salinity: Version 6.0 Validated Release	NASA/RSS SMAP Salinity: Version 6.0 Validated Release - Release Notes	PDF (4.34 mb)	Jan. 18, 2024
SMAP Salinity and Wind Speed Data User Guide	SMAP Salinity and Wind Speed Data User Guide	PDF (5.94 mb)	Nov. 12, 2020

SMAP Learning Resources

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Aerial photo of dam and reservoir on left, satellite image of same reservoir on right.

NASA Earth Observations for Reservoir and Water Utility Management

This ARSET training uses precipitation, soil moisture, and snow data to help reservoir managers assess inflows and manage water allocation and flood risks.

Training

Aug. 4-11, 2026

sea surface salinity compared to sea ice concentration in Alaska

Why Sea Surface Salinity Matters for Arctic Sea Ice

Arctic river discharge plays a key role in controlling early fall sea ice formation in the Beaufort Sea.

Data in Action

May 13, 2026

NASA-Funded Tool Tracks Floods and Water Risks in North Carolina

The Emergency Environmental Health Dashboard helped local communities assess water quality risks and infrastructure damage following Hurricane Helene and Tropical Storm Chantal.

Data in Action

Nov. 18, 2025

Landslide Monitoring and Risk Assessment Using NASA Earth System Data

This ARSET training teaches participants how satellite-based Earth observations can inform landslide science and disaster planning.

Training

March 11-18, 2025

Salinity and Stratification at the Sea Ice Edge

Can summer salinity values help better predict ice formation in the fall?

StoryMap

Jan. 22, 2025

Advancing Ecological Insights with NASA Subsetting and Visualization Tools and Services for Site-based Research

Join us to learn more about datasets and tools that enable the harmonization of remote sensing and in situ ecological data products for site-based research.

Webinar

Aug. 22, 2024

Using Coastal Surface Salinity to Monitor Global Water Cycle Changes

Research shows that coastal sea surface temperatures could be used as a proxy for detecting changes that are expected in the cycling of water between the oceans and continents.

Data in Action

April 18, 2024

Earthdata graphic identifier on top of satellite image of Earth

Efficient Geospatial Data Access with NASA's AppEEARS

Learn more about NASA's Application for Extracting and Exploring Analysis Ready Samples (AppEEARS). This webinar showcases the system's capabilities and highlights learning resources to help simplify data access workflows using AppEEARS.

Webinar

April 9, 2024

SHOWING 8 OF 37

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SMAP News

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A piece of a larger IceBridge Digital Mapping Sensor (DMS) Level 3 Ames Stereo Pipeline Orthorectified Image.

Earth Science Data Roundup: September 2025

A summary of datasets, products, and resources released by NASA’s Distributed Active Archive Centers (DAACs) in August 2025.

News

Sept. 4, 2025

A part of a larger screen capture from the OpenAltimetry user interface showing ICESat orbit tracks (lines) and data acquisition points (dots).

Earth Science Data Roundup: August 2025

A summary of datasets, products, and resources released by NASA’s Distributed Active Archive Centers (DAACs) in July 2025.

News

Aug. 13, 2025

This image is a portion of a larger image showing sulphur dioxide data from the OMI instrument aboard NASA's Aura satellite.

Earth Science Data Roundup: July 2025

A summary of datasets, products, and resources released by NASA’s Distributed Active Archive Centers (DAACs) in June 2025.

News

July 18, 2025

This is part of a larger image from the ASTER instrument aboard NASA's Terra satellite. Composed of reconstructed unprocessed instrument band combination 3n-2-1 data, this image shows the landscape of Guatemala on March 23, 2003. Credit: LP DAAC

Earth Science Data Roundup: June 2025

A summary of datasets, products, and resources released by NASA’s Distributed Active Archive Centers (DAACs) in May 2025.

News

June 12, 2025

Black-and-white VIIRS day/night bands data visualization

Earth Science Data Roundup: May 2025

A summary of datasets, products, and resources released by NASA’s Distributed Active Archive Centers (DAACs) in April 2025.

News

May 13, 2025

mean sea surface salinity values over 8 days across 2023

Sea Surface Salinity Datasets Now Available on the SNWG Earthdata Search Portal

Access Sea Surface Salinity with Sea Ice Mask, a NASA Satellite Needs Working Group solution, to discern salinity values close to the sea ice edge.

News

May 7, 2025

A piece of a larger ECOSTRESS image showing the impact of center-pivot irrigation in the state of Kansas.

Earth Science Data Roundup: March 2025

A summary of datasets, products, and resources released by NASA’s Distributed Active Archive Centers (DAACs) in February 2025.

News

March 6, 2025

A visualization of Normalized Difference Vegetation Index (NDVI) data over northern Mongolia on October 20, 2023, from the ECOSTRESS ECO_L2T_STARS V002 product.

Earth Science Data Roundup: December 2024

A summary of datasets, products, and resources released by NASA’s Distributed Active Archive Centers (DAACs) in November 2024.

News

Dec. 4, 2024

SHOWING 8 OF 43

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Frequently Asked Questions

Earthdata Forum

Our online forum provides a space for users to browse thousands of FAQs about research needs, data, and data applications. You can also submit new questions for our experts to answer.

Submit Questions to Earthdata Forumand View Expert Responses

SMAP Resources

SMAP Documents

SMAP Learning Resources

NASA Earth Observations for Reservoir and Water Utility Management

Why Sea Surface Salinity Matters for Arctic Sea Ice

NASA-Funded Tool Tracks Floods and Water Risks in North Carolina

Landslide Monitoring and Risk Assessment Using NASA Earth System Data

Salinity and Stratification at the Sea Ice Edge

Advancing Ecological Insights with NASA Subsetting and Visualization Tools and Services for Site-based Research

Using Coastal Surface Salinity to Monitor Global Water Cycle Changes

Efficient Geospatial Data Access with NASA's AppEEARS

SMAP News

Earth Science Data Roundup: September 2025

Earth Science Data Roundup: August 2025

Earth Science Data Roundup: July 2025

Earth Science Data Roundup: June 2025

Earth Science Data Roundup: May 2025

Sea Surface Salinity Datasets Now Available on the SNWG Earthdata Search Portal

Earth Science Data Roundup: March 2025

Earth Science Data Roundup: December 2024

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