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Impact of atmospheric waves on the Arctic Oscillation over the Northern Oceans.

Characterized by North-South vacillation of the eastward Jet (between 40 [degrees] N and 60 [degrees] N) over the oceans, the Arctic Oscillation The Arctic oscillation (AO) is the dominant pattern of non-seasonal sea-level pressure (SLP) variations north of 20N, and it is characterized by SLP anomalies of one sign in the Arctic and anomalies of opposite sign centered about 37-45N.  (AO) is a dominant mode of Northern Hemisphere climate variability, governing global weather and temperature distribution. In this study, the role of atmospheric waves in maintaining this climate mode is investigated using composite techniques based on the monthly time series of the AO amplitude. Given the National Center for Environmental Prediction and National Center for Atmospheric Research The National Center for Atmospheric Research (NCAR) is a non-governmental U.S.-based institute whose stated mission is "exploring and understanding our atmosphere and its interactions with the Sun, the oceans, the biosphere, and human society.  (NCEP/NCAR) Re-analyses, daily winds, temperature, and Geopotential heights around the globe will be analyzed to elucidate e·lu·ci·date  
v. e·lu·ci·dat·ed, e·lu·ci·dat·ing, e·lu·ci·dates

v.tr.
To make clear or plain, especially by explanation; clarify.

v.intr.
To give an explanation that serves to clarify.
 heat and momentum fluxes due to waves. The wave forcing of the basic circulations will be examined particularly over the northern oceans where the Jet fluctuation is strongest. The hypothesis is that while synoptic-scale wave (related to storms) and planetary-scale waves are both important in accelerating the eastward wind, their relative contribution differs over the North Pacific and North Atlantic oceans North Atlantic Ocean

The northern part of the Atlantic Ocean, extending northward from the equator to the Arctic Ocean.
. Knowledge about the AO-related forcing mechanism by atmospheric waves is essential to our understanding of the climate, of how anthropogenic an·thro·po·gen·ic  
adj.
1. Of or relating to anthropogenesis.

2. Caused by humans: anthropogenic degradation of the environment.
 influence will modify future climate and of forecasting in the 10-15 day range.
Jamie Wirth
Department of Physics
Coastal Carolina University
COPYRIGHT 2002 South Carolina Academy of Science
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2002 Gale, Cengage Learning. All rights reserved.

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Author:Wirth, Jamie
Publication:Bulletin of the South Carolina Academy of Science
Article Type:Brief Article
Geographic Code:1USA
Date:Jan 1, 2002
Words:198
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