Check out the recording of our latest Earthdata Webinar: Accessing Data for the World's Water with SWOT! Launched in December 2022, the Surface Water and Ocean Topography (SWOT) mission provides an unprecedented look at Earth's water. A joint undertaking by NASA and CNES (Centre National D'Etudes Spatiales) with contributions from CSA (the Canadian Space Agency) and the United Kingdom Space Agency, SWOT measurements for surface water extent and water body elevation for rivers, lakes, and the ocean are now publicly available for scientific research and applications.

From March 20th 2024, NOAA-20 is executing the Rephasing Maneuver, which takes approximately 15 days. During this time, NOAA-20 will not meet its orbit requirements. Users should exercise caution when using the NOAA-20 science data. Some missing granules and data degradation are expected.

The PO.DAAC is pleased to announce the availability of the version 6.0 SMAP Sea Surface Salinity (SSS) validated datasets from Remote Sensing Systems (RSS) and sponsored by the NASA Ocean Salinity Science Team. The SMAP satellite was launched on 31 January 2015 with a near-polar orbit at an inclination of 98 degrees and an altitude of 685 km.

Please be informed that the OSCAR third degree and 1 degree datasets will be retired from PO.DAAC in April. The datasets to be retired are:

• OSCAR_L4_OC_third-deg
• OSCAR_L4_OC_third-deg_YEARLY
• OSCAR_L4_OC_1deg

Users are encouraged to use the newest version, OSCAR Version 2.0, which provides daily averaged surface currents over a quarter degree grid. OSCAR Version 2.0 is available in three latencies below:

• OSCAR_L4_OC_NRT_V2.0
• OSCAR_L4_OC_INTERIM_V2.0
• OSCAR_L4_OC_FINAL_V2.0

Launched in December 2022, the Surface Water and Ocean Topography (SWOT) mission provides an unprecedented look at Earth's water. A joint undertaking by NASA and CNES (Centre National D'Etudes Spatiales) with contributions from CSA (the Canadian Space Agency) and the United Kingdom Space Agency, SWOT measurements for surface water extent and water body elevation for rivers, lakes, and the ocean are now publicly available for scientific research and applications.

The PO.DAAC is pleased to announce the availability of the Rongowai-CYGNSS Airborne Level 1 Science Data Record Version 1.0 dataset produced by the University of Auckland (UoA) Rongowai Science Payloads Operations Centre in New Zealand. The dataset contains the geo-located Delay Doppler Maps (DDMs) calibrated into Power Received (Watts) and Bistatic Radar Cross Section (BRCS) expressed in units of meters squared from the Delay Doppler Mapping Instrument onboard an Air New Zealand domestic Q300 (tail number ZK-NFA) flight.

The PO.DAAC is pleased to announce the public release of the (Cyclone Global Navigation Satellite System) CYGNSS Science Data Record (SDR) Version 3.2 (V3.2) Level 1 (L1) DDM calibration, Level 2 (L2) wind speed retrieval, Level 3 fully developed seas (L3 FDS) gridded wind speed, and Level 3 merged (L3 MRG) wind speed data products.

The PO.DAAC is pleased to announce the public release of Surface Water and Ocean Topography (SWOT) Ka-band Radar Interferometer (KaRIn) Science Data Products. This release includes:

• KaRIn LR oceanography products from forward processing from November 23, 2023 (Cycle 7 from science phase) onward;
• KaRIn LR oceanography and HR hydrology products from forward processing from January 25, 2024 (Cycle 10 from science phase) onward.

Reprocessing of science data products from March 30, 2023 to January 25, 2024 is ongoing. They will gradually be released as they become available over the next few weeks. 

The Surface Water and Ocean Topography (SWOT) project is pleased to announce the public release of Level 2 Geophysical Data Record products from the onboard nadir altimeter (NALT) and the advanced microwave radiometer (AMR). This release includes the Geophysical Data Record (GDR) from each of the NALT and AMR instruments. 

The NASA PO.DAAC hosted a SWOT Data Access Workshop on February 13, 2024 in Honolulu, HI in partnership with science guest speakers. 36 participants attended the half-day workshop, which included practical information on SWOT (Surface Water and Ocean Topography) hydrology data products and data access, hands-on Jupyter notebook tutorial demos in the cloud, a science workflow example, and several opportunities for participants to interact with each other, ask questions, and provide SWOT data tools and access feedback.