Sunset over the ocean. Credit: Grigory Bruev

Update to JAXA’s AMSR-2 SST product

Photo credit: Grigory Bruev

JAXA will update the GCOM-W1 AMSR-2 Sea Surface Temperature product on 27 July 2022.

Last Updated

05 October 2022

Published on

14 July 2022

The AMSR-2 Sea Surface Temperature in GHRSST format will be updated to Version 4.1.

This will involve an update to the filenames.

Current filename example

20220714034006-JAXA-L2P_GHRSST-SSTsubskin-AMSR2_NRT-v4.0_B-v02.0-fv01.0.nc.gz

New filename example (from 27 July)

20220727034006-JAXA-L2P_GHRSST-SSTsubskin-AMSR2_NRT-v4.1_B-v02.0-fv01.0.nc.gz

The current version of the product, V4.0, shows decreasing trends versus drifting buoys in the Northern tropics and sub-tropics. The new Version 4.1 product will correct this bias with improved RMSE and bias in 10N-40N regions. It will also improve wind and atmospheric correction to retrieve SST under windy and weak-rain conditions, where SST is set to missing in V4.0, with quality level of ‘Acceptable quality (QL=4)’.

For more information, contact our User Service Helpdesk.