A comparison of sea surface temperatures from microwave remote sensing of the Labrador Sea with in situ measurements and model simulations.

Emery, William J., Brandt, Peter , Funk, Andreas and Böning, Claus W. (2006) A comparison of sea surface temperatures from microwave remote sensing of the Labrador Sea with in situ measurements and model simulations. Open Access Journal of Geophysical Research: Oceans, 111 (C12). C12013. DOI 10.1029/2006JC003578.

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Abstract

As one of the few places in the ocean where winter cooling and mixing creates conditions where water from the surface can penetrate into the deep ocean the Labrador Sea is an area of interest to people studying climate change in the ocean. Persistent cloud cover over this area makes it impossible to use infrared satellite imagery to relate space/time changes in sea surface temperature (SST) to changes in surface currents and air-sea interaction. Using passive microwave SSTs from the Advanced Microwave Scanning Radiometer (AMSR-E), we plot space/time changes in SST in the Labrador Sea and relate these changes to both simultaneous in situ measurements of temperature and numerical model SSTs. A direct comparison between the microwave SSTs, infrared SSTs, and in situ temperatures measured from profiling floats reveals that the microwave SSTs are a good representation of space/time changes in infrared SST and in ocean temperatures down to 10 m below the sea surface. Comparisons between the microwave SSTs and time series of temperatures at depths below 50 m reveal that winter/spring surface cooling makes the SST similar to temperatures at these deeper depths in the convection region of the central Labrador Sea. Detailed comparison of the annual cycle between the microwave SSTs and the model SST and 10 m currents reveals overall good agreement and some interesting differences.

Document Type: Article
Keywords: Oceanography; Geodesy; sea surface temperatures, microwave remote sensing, Labrador Sea, in situ measurements and model simulations; microwave SST, convection
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-TM Theory and Modeling
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2006JC003578
ISSN: 2169-9275
Projects: SFB460, REASON DISCOVER, ARGO Program
Date Deposited: 03 Dec 2008 16:51
Last Modified: 19 Apr 2018 10:44
URI: http://oceanrep.geomar.de/id/eprint/1599

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