Sentences with phrase «through changes in atmospheric circulation»
The North Atlantic warms in a few months in response to an El Niño, through changes in atmospheric circulation (slower trade winds in the tropical North Atlantic, for example).
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The regions where droughts have occurred seem to be determined largely by changes in SSTs, especially in the tropics, through associated changes in the atmospheric circulation and precipitation.
That process releases warm water from below the surface of the PWP, shifts it to the central and eastern equatorial Pacific, releases heat there through evaporation, which causes changes in atmospheric circulation, in turn causing SST outside of the tropical Pacific to vary.
The cryosphere derives its importance to the climate system from a variety of effects, including its high reflectivity (albedo) for solar radiation, its low thermal conductivity, its large thermal inertia, its potential for affecting ocean circulation (through exchange of freshwater and heat) and atmospheric circulation (through topographic changes), its large potential for affecting sea level (through growth and melt of land ice), and its potential for affecting greenhouse gases (through changes in permafrost)(Chapter 4).
Long - term changes in atmospheric circulation have resulted in an increased amount of perennial sea ice being exported through Fram Strait rather than being recirculated (e.g., Beaufort Gyre); this was what set up the 2007 record September minimum.
Abrupt climate change due to variations in the atmospheric circulation and its attendant patterns of climate variability can arise through two principal mechanisms: (1) through abrupt changes in the time - dependent behavior of the circulation; or (2) through slowly evolving changes in the circulation that project onto large horizontal gradients in surface weather.
Thus an understanding of the mechanisms distributing water vapor through the atmosphere and of water vapor's effects on atmospheric radiation and circulation is vital to estimating long - term changes in climate.