Comparison of in situ time-series of temperature with gridded sea surface temperature datasets in the North Atlantic

Hughes, S., Holliday, N.P., Colbourne, E., Ozhigin, V., Valdimarsson, H., Østerhus, S. and Wiltshire, K. (2009) Comparison of in situ time-series of temperature with gridded sea surface temperature datasets in the North Atlantic. ICES Journal of Marine Science, 66 (7), 1467-1479. (doi:10.1093/icesjms/fsp041).

Abstract

Analysis of the effects of climate variability and climate change on the marine ecosystem is difficult in regions where long-term observations of ocean temperature are sparse or unavailable. Gridded sea surface temperature (SST) products, based on a combination of satellite and in situ observations, can be used to examine variability and long term trends as they provide better spatial coverage than the limited sets of long in situ time-series. SST data from three gridded products (Reynolds/NCEP OISST.v2., Reynolds ERSST.v3 and the Hadley Centre HadISST1) are compared with long time-series of in situ measurements from ICES standard sections in the North Atlantic and Nordic Seas. The variability and trends derived from these two data sources are examined and the usefulness of the products as a proxy for sub-surface conditions is discussed.

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