The impact of SST resolution change in the ERA-Interim reanalysis on wintertime Gulf Stream frontal air-sea interaction
MetadataShow full item record
KeywordFrontal air-sea interaction; Oceanic fronts; Atmospheric fronts; ERA-Interim; Midlatitude climate variability
This paper examines the sensitivity to a change in sea surface temperature (SST) resolution of the interaction between atmospheric and oceanic fronts in the Gulf Stream region in the ERA-Interim reanalysis data set. Two periods are considered, January 1979 to December 2001 (SST resolution 1° × 1°) and December 2010 to February 2016 (SST resolution 0.05° × 0.05°). The winter season from the latter 6 years of high-resolution SST is compared against six random periods of six wintertime seasons from the low-resolution SST period, to assess the robustness of the result against natural climate variability. In all comparisons, a significant change in frontal air-sea sensible heat flux exchange is found that is highly correlated to the change in mean SST gradient. This leads to both increases and decreases in occurrence of atmospheric fronts and mean precipitation of up to 30%. These results reemphasize the importance of high SST resolution in resolving the influence of oceanic fronts on weather and climate.
Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 44 (2017): 3246–3254, doi:10.1002/2017GL073028.
Suggested CitationGeophysical Research Letters 44 (2017): 3246–3254
Showing items related by title, author, creator and subject.
FASINEX Frontal Air-Sea Interaction Experiment (January-June 1986) : summaries for FASINEX mooring cruises; phase one: R/V KNORR Cruise 119, phase three: RV/KNORR Cruise 123 Pennington, Nancy J.; Weller, Robert A. (Woods Hole Oceanographic Institution, 1986-10)The Frontal Air-Sea Interaction Experiment (FASINEX) was a study of the response of the upper ocean to atmospheric forcing in the vicinity of an oceanic front in the subtropical convergence zone southwest of Bermuda, the ...
FASINEX Frontal Air-Sea Interaction Experiment (January-June 1986) : cruise summaries for FASINEX phase two; R/V OCEANUS cruise 175, R/V ENDEAVOR cruise 141 Pennington, Nancy J.; Weller, Robert A. (Woods Hole Oceanographic Institution, 1986-10)The Frontal Air-Sea Interaction Experiment (FASINEX) was a study of the response of the upper ocean to atmospheric forcing in the vicinity of an oceanic front in the subtropical convergence zone southwest of Bermuda, ...
Toole, John M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1980-03)The Southern Ocean as defined here is the body of water between the Antarctic Continent and the Antarctic Polar Front, (APF). This ocean is considered important in the global thermodynamic balance of the ocean-atmosphere ...