Wednesday, July 29, 2020

The PO.DAAC is pleased to announce the public release of the GHRSST NAVO MetOp-A/B/C Level-2P version 2.0 (v2.0) Sea Surface Temperature (SST) datasets based on the AVHRR sensor. The MetOp satellite program is a European multi-satellite program to provide weather data services for monitoring climate and improving weather forecasts. MetOp-A,  MetOp-B and Metop-C were respectively launched on 19 Oct. 2006, 17 Sept. 2012 and 7 Nov. 2018. The program was jointly established by the European Space Agency (ESA) and the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT) with the US National Oceanic and Atmospheric Administration (NOAA) contributing the AVHRR sensor.

Datasets comprising this release include the MetOp-A/B/C L2P v2.0 SST data, which are produced by the US Naval Oceanographic Office (NAVO). The v2.0 is the updated version from current v1.0 with extensive algorithm improvements and upgrades. The major improvements include: 1) Significant changes in contaminant/cloud detection; 2) Increased the spatial resolution from 9 km to 4 km; 3) Updated compliance with GDS2, ACDD 1.3, and CF 1.6; and 4) Removed the dependency on the High-resolution Infrared Radiation Sounder (HIRS) sensor (only available to MetOp-A/B), thus allowing for the consistent inter-calibration and processing of MetOp-A/B/C data.  All three GHRSST L2P GDS2 datasets provide the daily global coverage at 4 km spatial resolution, in netCDF-4 format. The v2.0 updates are only applied to the forward data stream with an approximate latency of 3 hours from the latest observation time, and there is no reprocessing producing a delayed mode version. 

The GHRSST NAVO MetOp-A/B/C Level-2P v2.0 datasets are described and discoverable via the PO.DAAC dataset information pages with following DOIs. More information on the GHRSST Project, as well as other GHRSST datasets, may be found here.






Jean-François Cayula, Doug May, and Keith Willis (2016) Thermal uniformity analysis of SST data fields, Proceedings of the GHRSST XVII Science Team Meeting, Issue: 3, Page 122-127,  Washington DC, USA 

Comments/Questions? Please contact or visit the PO.DAAC Ocean Temperature Forum.