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NAO. North Atlantic Oscillation (NAO) Description: Pattern of variability in the North Atlantic. Image: Postive Phase: Calculation Method: The indices are based on centers-of-action of 500mb height patterns. These time series utilize the NCEP/NCAR R1 dataset. The area averaged region 55-70N;70W-10W is subtracted from 35-45N; 70W-10W.
10 Ιαν 2012 · Historical Index: Monthly tabulated NAO index dating back to 1950. Indices are standardized by the 1981-2010 climatology. Back to contents : One of the most prominent teleconnection patterns in all seasons is the North Atlantic Oscillation (NAO) (Barnston and Livezey 1987).
The principal component (PC)-based indices of the North Atlantic Oscillation (NAO) are the time series of the leading Empirical Orthogonal Function (EOF) of SLP anomalies over the Atlantic sector, 20°-80°N, 90°W-40°E.
17 Μαΐ 2024 · To evaluate changes in this region under global warming, an index of northern North Atlantic SST (NNASST) is computed as the area-average over the 50–80°N, 90°W–40°E domain (Supplementary ...
26 Αυγ 2021 · The North Atlantic Oscillation is the most influential atmospheric climate index (climate cycle or teleconnection) over the North Atlantic sector, and can be thought of as the Atlantic sector of the Arctic Oscillation.
The North Atlantic Oscillation (NAO) is a prominent “seesaw” of atmospheric surface pressure fluctuation between the Azores and Iceland that has been meteorologically well defined since at least the late 19th century (e.g., Hurrell, Kushnir, Ottersen, & Visbeck, 2003).
26 Φεβ 2021 · The Subpolar North Atlantic is known for rapid reversals of decadal temperature trends, with ramifications encompassing the large-scale meridional overturning and gyre circulations, Arctic heat...
