Journal article
The characteristic variability and connection to the underlying synoptic activity of the Amundsen-Bellingshausen Seas Low
RL Fogt, AJ Wovrosh, RA Langen, I Simmonds
Journal of Geophysical Research Atmospheres | AMER GEOPHYSICAL UNION | Published : 2012
DOI: 10.1029/2011JD017337
Abstract
Recent studies have noted an asymmetrical climate change across Antarctica, with significant warming in West Antarctica and the Antarctica Peninsula, and primarily insignificant trends in East Antarctica. Due to its proximity, variations in the position and intensity of the Amundsen-Bellingshausen Seas Low (ABSL) are a suspected atmospheric mechanism. Here, we investigate the ABSL to understand its characteristic variability and underlying synoptic-scale influences, based on three reanalysis data sets. The ABSL is defined as the minimum monthly pressure in the 45°-75°S, 180°-60°W domain. Using this criterion, a significant north-south and east-west progression is noted in the climatological ..
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Awarded by National Science Foundation
Funding Acknowledgements
R.L.F., A.J.W., and R.A.L. all acknowledge support from the National Science Foundation Office of Polar Programs grant ANT-0944168. Part of this work was made possible by grants to I.S. from the Australian Research Council and the Australian Antarctic Science Advisory Committee. The NOAA Earth System Research Laboratory Physical Sciences Division is thanked for providing the NNR data, ECMWF is thanked for providing ERA-40 data, and the Japanese Meteorological Agency is thanked for providing JRA-25.