Statistical assessment of sea-surface salinity from SMAP: Arabian sea, Bay of Bengal and a promising Red Sea application
Menezes, Viviane V.
MetadataShow full item record
Sea-surface salinity (SSS) is an essential climate variable connected to Earth’s hydrological cycle and a dynamical component of ocean circulation, but its variability is not well-understood. Thanks to Argo floats, and the first decade of salinity remote sensing, this is changing. While satellites can retrieve salinity with some confidence, accuracy is regionally dependent and challenging within 500–1000 km offshore. The present work assesses the first four years of the National Aeronautics and Space Administration’s Soil Moisture Active Passive (SMAP) satellite in the North Indian Ocean. SMAP’s improved spatial resolution, better mitigation for radio-frequency interference, and land contamination make it particularly attractive to study coastal areas. Here, regions of interest are the Bay of Bengal, the Arabian Sea, and the extremely salty Red Sea (the last of which has not yet received attention). Six SMAP products, which include Levels 2 and 3 data, were statistically evaluated against in situ measurements collected by a variety of instruments. SMAP reproduced SSS well in both the Arabian Sea and the Bay of Bengal, and surprisingly well in the Red Sea. Correlations there were 0.81–0.93, and the root-mean-square difference was 0.38–0.67 for Level 3 data.
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Menezes, V. V. Statistical assessment of sea-surface salinity from SMAP: Arabian sea, Bay of Bengal and a promising Red Sea application. Remote Sensing, 12(3), (2020): 447, doi:10.3390/rs12030447.
Suggested CitationMenezes, V. V. (2020). Statistical assessment of sea-surface salinity from SMAP: Arabian sea, Bay of Bengal and a promising Red Sea application. Remote Sensing, 12(3), 447.
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Yu, Lisan (John Wiley & Sons, 2015-06-08)The Intertropical Convergence Zone (ITCZ) is a major source of the surface freshwater input to the tropical open ocean. Under the ITCZ, sea-surface salinity (SSS) fronts that extend zonally across the basins are observed ...
Tropical Atlantic climate response to low-latitude and extratropical sea-surface temperature : a Little Ice Age perspective Saenger, Casey P.; Chang, Ping; Ji, Link; Oppo, Delia W.; Cohen, Anne L. (American Geophysical Union, 2009-06-05)Proxy reconstructions and model simulations suggest that steeper interhemispheric sea surface temperature (SST) gradients lead to southerly Intertropical Convergence Zone (ITCZ) migrations during periods of North Atlantic ...
Late Holocene sea-surface temperature and precipitation variability in northern Patagonia, Chile (Jacaf Fjord, 44°S) Sepulveda, Julio; Pantoja, Silvio; Hughen, Konrad A.; Bertrand, Sebastien; Figueroa, Dante; Leon, Tania; Drenzek, Nicholas J.; Lange, Carina B. (2009-06-12)A high-resolution multi-proxy study including the elemental and isotopic composition of bulk organic matter, land plant-derived biomarkers, and alkenone-based sea surface temperature (SST) from a marine sedimentary record ...