ESA CCI SM v06.1 now available!

The new ESA CCI SM version, v06.1 is now available! This is the most accurate ESA CCI SM product so far and provides global data from 1978 to 2020.

Register now to gain access, and take a look at the Frequently Asked Questions and Documentation!

The algorithm updates include the following:

  • LPRMv6.1 is used for all passive sensors. This includes improved intercalibration and improved flagging of snow conditions.
  • A new ASCAT version is used which includes optimised cross over angles for vegetation correction and improved snow / frozen flagging.
  • Cross-flagging of frozen soils is implemented to take advantage of flagged observations in all datasets.
  • The period for which TMI is used has been extended to 2015 and GPM and FY-3B have been included for the first time.
  • Gap filling of SNR data is undertaken per land cover class rather than globally.
  • Break-adjusted COMBINED product provided as an experiemental product using ERA5 as a reference. See Preimesberger et al. (2021) for further details.

Users can also sign up for the QA4SM online validation service and compare the ESA CCI SM v06.1 product to reference datasets. Here is a comparison we have already published for ESA CCI SM v06.1 COMBINED against ERA-5 soil moisture:

Comparison of ERA-5 against ESA CCI SM v06.1 COMBINED for the period 2007-2020

 May 11, 2021