Waves of Change: Ocean Surface Topography Updates from PO.DAAC

Jack McNelis (JPL, United States)


Catalina Oaida (JPL, United States); Michelle Gierach (JPL, United States); Jinbo Wang (JPL, United States); Suresh Vannan (JPL, United States); Michael Gangl (JPL, United States); Wen-Hao Li (Raytheon, United States)

Event: 2020 Ocean Surface Topography Science Team Meeting (virtual)

Session: Outreach, Education and Altimetric Data Services

Presentation type: Type Forum

The Physical Oceanography Distributed Active Archive Center (PO.DAAC) is the NASA data center that archives physical oceanographic data from the NASA Earth Observing System and oceans science research programs, and supports their use by the wider research community. PO.DAAC data consist of ocean surface topography, sea surface temperature, salinity, winds, ocean circulation, and gravity. Ocean surface topography holdings include data from Seasat, the Jason series, GRACE and GRACE-FO, and more. The PO.DAAC published several datasets of interest to the OST community since the last science team meeting. Examples include reconstructed global mean sea level for years 1900 to 2018 from GRACE/GRACE-FO and long-term in-situ observations/model estimates (doi: 10.5067/GMSLT-FJPL1; published in Frederikse et al. 2020, Nature), wind speed and surface heat flux from CYGNSS, ship- and air-deployed CTD measurements and bathymetry from OMG field campaigns, and several others. The new Integrated Multi-Mission Ocean Altimeter Data for Climate Research Version 5 product suite from MEaSUREs-SSH is also set for release by mid-November. The PO.DAAC also plans to publish the latest estimates of ocean circulation and climate from ECCO by the end of 2020, which will include monthly, daily, and sub daily estimates for the period from 1992 to 2017. PO.DAAC will archive the first L1-L2 data from the Sentinel-6 MF/Jason-CS radar altimetry mission, and continue its support of SWOT pre-launch activities. Web page links to various missions and data products relevant to the OSTST community are provided below. Finally, PO.DAAC continues to develop and test its cloud infrastructure to ensure OST data are accessible following the upcoming launches of Sentinel-6 (November 2020) and SWOT (February 2022). Data recipes and Jupyter notebooks that leverage these cloud services are being developed to assist users with the transition to accessing/using data in the cloud. The PO.DAAC will continue to support the OSTST in their pursuit of scientific insight about Earth’s oceans.

PO.DAAC Ocean topography datasets: https://podaac.jpl.nasa.gov/datasetlist?ids=Keywords&values=Oceans:Sea%20Surface%20Topography&view=list
PO.DAAC Sentinel-6 mission page: https://podaac.jpl.nasa.gov/Sentinel-6
PO.DAAC SWOT mission page: https://podaac.jpl.nasa.gov/SWOT
Jack McNelis
United States