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contributor authorWalsh, John E.
contributor authorChapman, William L.
date accessioned2017-06-09T15:13:13Z
date available2017-06-09T15:13:13Z
date copyright1990/12/01
date issued1990
identifier issn0894-8755
identifier otherams-3765.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4175789
description abstractBecause much of the deep water of the world's oceans forms in the high-latitude North Atlantic, the potential climatic leverage of salinity and temperature anomalies in this region is large. Substantial variations of sea ice have accompanied North Atlantic salinity and temperature anomalies, especially the extreme and long-lived ?Great Salinity Anomaly? of the late 1960s and early 1970s. Atmospheric pressure data are used hem to show that the local forcing of high-latitude North Atlantic Ocean fluctuations is augmented by antecedent atmospheric circulation anomalies over the central Arctic. These circulation anomalies are consistent with enhanced wind-forcing of thicker, older ice into the Transpolar Drift Stream and an enhanced export of sea ice (fresh water) from the Arctic into the Greenland Sea prior to major episodes of ice severity in the Greenland and Iceland seas. An index of the pressure difference between southern Greenland and the Arctic-Asian coast reached its highest value of the twentieth century during the middle-to-late 1960s, the approximate time of the earliest observation documentation of the Great Salinity Anomaly.
publisherAmerican Meteorological Society
titleArctic Contribution to Upper-Ocean Variability in the North Atlantic
typeJournal Paper
journal volume3
journal issue12
journal titleJournal of Climate
identifier doi10.1175/1520-0442(1990)003<1462:ACTUOV>2.0.CO;2
journal fristpage1462
journal lastpage1473
treeJournal of Climate:;1990:;volume( 003 ):;issue: 012
contenttypeFulltext


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