Discriminating water sources from space in the Arctic Ocean: A case study for the southern Beaufort Sea using MODIS ocean color and SMOS salinity data
A recent paper by Matsuoka et al. (2016), using SMOS ESA L2 SSS, found nice correlations between the interannual variability of SMOS SSS and ocean color CDOM (see fig 1 and 2 below) in the Mackenzie river mouth. Using this region as a case study, they derive an algorithm using this two sets of data for getting reasonable fractions of river water. As stated by the authors ‘Application of this algorithm may lead to the discrimination of water sources in the surface layer of the Arctic Ocean in various environments where seawater, ice melt water, and river water are intermingled,which might be useful to improve our understanding of physical and biogeochemical processes related to each water source’.
Fig.1 : Satellite images of CDOM absorption coefficient at 443 nm [aCDOM(443),m−1] using MODIS ocean color data in July to August 2010 to 2012 (from Matsuoka et al. (2016))
Fig. 2 : Same as Fig. 1 for SMOS SSS (from Matsuoka et al. (2016)).
Atsushi Matsuoka, Marcel Babin, Emmanuel C. Devred, A new algorithm for discriminating water sources from space: A case study for the southern Beaufort Sea using MODIS ocean color and SMOS salinity data, Remote Sensing of Environment, Volume 184, October 2016, Pages 124-138, ISSN 0034-4257, http://dx.doi.org/10.1016/j.rse.2016.05.006. (//www.sciencedirect.com/science/article/pii/S0034425716301997)
On behalf of the organizing committee, I would like to draw your attention on the SMOS+STORM ESA project workshop
International workshop on measuring high-wind speeds over the ocean
15-17 November 2016, Met Office, Exeter
A three-day workshop on the science and applications of ocean surface winds, with a focus on measuring high or extreme wind speeds. The workshop will be held at the Met Office headquarters in the cathedral city of Exeter.
Topics will include:
- Satellite measurement techniques including new capabilities from SMOS, SMAP and AMSR2 sensors
- Ground and airborne measurements
- Core/operational applications and challenges e.g. hurricane/extreme forecasting, storm surges, waves
- Air-sea applications and challenges e.g. seasonal/climate, upper ocean dynamics, air-sea interaction, biogeochemistry
- Numerical Weather Prediction (NWP) applications
- Numerical Ocean Prediction (NOP) applications
Organisers: Pete Francis (Met Office), James Cotton (Met Office), Nicolas Reul (IFREMER), Craig Donlon (ESA)
Further information on how to register for the workshop and submit an abstract and preliminary program is available from the link below:
Please find also attached the workshop flyer.
Category : Data, L1, L2, Ocean
Dear SMOS data user -
We would like to inform you that the reprocessed level 2 soil moisture and sea surface salinity data are now available on the new ESA SMOS Online Dissemination service: https://smos-ds-02.eo.esa.int/oads/access/.
This release aligns the Level 2 soil moisture and sea surface salinity data available operationally already since May 2015 with the reprocessed data archive: SMOS data users now have a complete v6 data set available.
The algorithm evolutions implemented in the v6 data set are described in the respective Algorithm Theoretical Baseline Documents (ATBDs) and in the read-me-first notes: https://earth.esa.int/web/guest/missions/esa-operational-eo-missions/smos/content/-/asset_publisher/t5Py/content/data-types-levels-formats-7631. We would like to encourage all users to familiarise themselves with the read-me-first notes before using the data.
The level 2 reprocessed data products are available on the new ESA SMOS Online Dissemination service accessible here (smos-diss.eo.esa.int). The new service allows to access data by https and ftp/ftps transfer protocols for all registered ESA EO Single Sign-On (EO-SSO) users. The online service facilitates the data access with enhanced functionality for data navigation and selection by data type, acquisition time, geographical area and data format (i.e. ESA Earth Explorer (EEF) or NetCDF format).
SMOS level 1 brightness temperature data and ECMWF auxiliary products are also available from the new ESA SMOS Online Dissemination service.
For further details on how to access the SMOS data and how to register as ESA EO_SSO please https://earth.esa.int/web/guest/missions/esa-operational-eo-missions/smos/content/-/asset_publisher/t5Py/content/how-to-obtain-data-7329.
Category : CATDS, L3, Ocean
Dear SMOS users,
All the SMOS L3 soil moisture, ocean salinity and common products, from January 2010 to April 2015, have been reprocessed. You can download those products from
a) CATDS with the usual procedure (if you do not have a password contact contact email@example.com to get one) or
b) through the SIPAD interface (http://www.catds.fr/sipad/).
Please NOTE :
- All the reprocessed products use the EASE2 grid.
- The CATDS processor’s version used is 300, which correspond to the DPGS version v620
- The reprocessed products are tagged RE04
- These reprocessed products are derived using the same algorithm as the one used in the CATDS real time processing, hence ensuring temporal continuity.
- A new RFI (radio frequency interference) probability product is available.
Very soon we will also make available 6 years of root zone soil moisture from SMOS
We appreciate your feed back so do not hesitate to contact us
Remember the SMOSDATA POLICY : The CATDS data are freely distributed. However, when using these data in a publication, we request that the following acknowledgement be given :
« These data were obtained from the « Centre Aval de Traitement des Données SMOS » (CATDS), operated for the « Centre National d’Etudes Spatiales » (CNES, France) by IFREMER (Brest, France) »