Interannual Variability of Satellite- Derived Sea Surface Temperature in the Western North Atlantic Shelf and Slope, 1985-1999 Anne-Marie Brunner and Jim Bisagni University of Massachusetts, Dartmouth School for Marine Science & Technology, Department of Estuarine & Ocean Sciences
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Anne-Marie Brunner and Jim Bisagni University of Massachusetts, Dartmouth
Anne-Marie Brunner and Jim Bisagni University of Massachusetts, Dartmouth School for Marine Science & Technology, Department of Estuarine & Ocean Sciences. Interannual Variability of Satellite-Derived Sea Surface Temperature in the Western North Atlantic Shelf and Slope, 1985-1999. - PowerPoint PPT Presentation
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Interannual Variability of Satellite-Derived Sea Surface Temperature
in the Western North Atlantic Shelfand Slope, 1985-1999
Anne-Marie Brunner
and Jim Bisagni
University of Massachusetts, DartmouthSchool for Marine Science & Technology,
Department of Estuarine & Ocean Sciences
3
Adapted from Drinkwater et al. (1999).
11 22
33 44
55 66
Propagation of the 1997/1998 “Cold Event” in satellite derived SST
-0.107-0.105-0.0660.000W4
0.0770.044-0.151 (p<0.05)
-0.115(p<0.1)
W3
-0.0560.025-0.172 (p<0.025)
-0.017W 2
0.119(p<0.1)
-0.146 (p<0.05)
0.0810.296 (p<0.0001)
W 1
-0.207 (p<0.01)
-0.243 (p<0.0001)
-0.0570.324 (p<0.0001)
Qnet 4
-0.195 (p<0.025)
0.147 (p<0.05)0.163 (p<0.05)
-0.076Qnet 3
-0.075-0.0480.03-0.061Qnet 2
-0.0080.0170.004-0.099Qnet 1
0.324 (p<0.0001)
0.0310.119 (p<0.1)
0.017NAO
SST 4SST 3SST 2SST 1
Correlation Coeff. R
Comparison of Offshelf EOF results with GSNW
Summary• We can track intrusions of LSW into the Slope Sea using satellite-
derived SST.
• Low correlation and significance levels suggest that other
mechanisms besides climate-related variability of surface forcing from
wind magnitude and net heatflux related to the NAO are important in
the shelf-slope region of the western North Atlantic ocean.
• Evidence points to other mechanisms that may include horizontal
advection and vertical mixing and may play a large role in controlling
IAV of SST.
• Influence of position of the Gulfstream onto offshore seasurface
temperature varies along the western North Atlantic shelf and slope;
maybe indicating co-variation between the polar and subpolar gyres.