PO.DAAC

The PO.DAAC is pleased to announce the public release of the CYGNSS Science Data Record (SDR) Version 3.0 datasets. The SDR Version 3.0 collection provides a total of 3 unique datasets, each corresponding to processing levels 1 (L1), 2 (L2) and 3 (L3), respectively. While there is quite a large number of variables and measurement parameters in each dataset, the primary measurement in L1 is the Bistatic Radar Cross Section (BRCS) and in both L2 and L3 it is wind speed (meters per second).

Due to the recent release of the CYGNSS Ocean Surface Heat Flux Climate Data Record (CDR) v1.0 (DOI: 10.5067/CYGNS-C2H10) dataset producing data at the same latency and frequency as the older Science Data Record (SDR) v1.0 (DOI: 10.5067/CYGNS-L2H10) dataset and ongoing efforts to update the SDR with a newer version, the data provider has decided to cease continuing production of new data for the CYGNSS SDR V1.0 dataset, which will complete the historical processing record of this dataset covering a period from 18 March 2017 to 30 September 2020.

The PO.DAAC is pleased to announce the public release of the CYGNSS Level 2 Ocean Surface Heat Flux Climate Data Record (CDR) Version 1.0. More information regarding the CYGNSS mission and instrumentation is available from PO.DAAC’s mission webpage.

This dataset provides the time-tagged and geolocated ocean surface heat flux parameters with 25 x 25 kilometer footprint resolution from the Delay Doppler Mapping Instrument (DDMI) aboard the CYGNSS satellite constellation.

On September 24, Suomi-NPP performed an "Inclination Adjust Maneuver" (https://www.star.nesdis.noaa.gov/icvs/SNPP_Anomalies.php). During the maneuver, the NOAA ACSPO VIIRS SST products from NPP were negatively affected and therefore, the following L2P/L3U SST data granules have been removed from PO.DAAC repository.

PO.DAAC is continuing its transition towards a web portal that is content centered, data driven, and provides personalized user experiences that are supplemented with efficient search and discovery capabilities.

In this second phase, a user will experience improvements in the PO.DAAC Web Portal Dataset Search and Discovery powered by NASA Earthdata Common Metadata Repository (CMR) including free-text search, faceted search and filtering, and information displayed on the dataset landing pages.