North Atlantic sea ice concentration and climate variations from 1850 to present

Authors: Emily Greene*, , Thomas J Ballinger, Texas State University
Topics: Climatology and Meteorology, Cryosphere, Polar Regions
Keywords: climate, sea ice, teleconnections, Arctic, circulation, weather
Session Type: Poster
Day: 4/13/2018
Start / End Time: 10:00 AM / 11:40 AM
Room: Napoleon Foyer/Common St. Corridor, Sheraton, 3rd Floor
Presentation File: No File Uploaded

As global climate continues to rapidly change, the North Atlantic Arctic has seen some of these repercussions. As an area which experiences warming and cooling from feedback cycles, teleconnections, and weather patterns, the North Atlantic Arctic cryosphere is sensitive to subtle ocean-atmosphere changes. This is especially apparent in the variations in sea ice concentration, and even more apparent in recent years as warming continues to accelerate Arctic melting.

In this study, we analyze a new monthly sea ice concentration dataset, spanning 1850 to present day. With a specific focus on the sub-regions in the North Atlantic Arctic, including Baffin Bay off the western coast of Greenland, and the waters surrounding Iceland, we identify temporal variations in the two oceanic domains. Local sea surface temperatures, 500 hPa geopotential heights, and surface pressure values, are compared against the sea ice to identify physical drivers of melt variability and change. Associations between North Atlantic sea ice and regional climate mechanisms will be emphasized at the decadal-scale across the study era.

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