Synoptic Climatology for the Troposphere over the Southern Beaufort Sea
Abstract
Synoptic scale atmospheric circulation patterns drive important dynamic and thermodynamic processes in sea ice, particularly through temperature advection, precipitation, and wind-forcing. Synoptic climatology is the study of synoptic circulation patterns over time. Synoptic typing and compositing is a common technique used to identify a limited number of prevailing synoptic weather types that govern a region's climate. This work builds upon a previous synoptic climatology developed using principle components analysis and k-means clustering for the southern Beaufort Sea using a variety of high resolution and high-quality gridded atmospheric datasets. The goals of this paper are to compare a variety of gridded reanalysis datasets (such as NCEP-NCAR, GEM-LAM, Arctic Reanalysis, etc.), and contrast with data previously used, and also with other observations such as marine weather stations, etc. Upper-level tropospheric dynamics (925 - 250mb) will also be investigated as part of this study, and related to corresponding surface circulation patterns. Upper-level variables to be investigated include mean geopotentional height, vorticity, and winds. Investigation of upper-level tropospheric dynamics (925 - 250 mb) and their relation to surface atmospheric circulation patterns. Atmospheric variables, such as mean geopotential height, vorticity, etc. at standard meteorological levels in the atmosphere will be classified as per the orginal synoptic catalogue, which is based on gridded sea level pressure data.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2013
- Bibcode:
- 2013AGUFM.C33A0679A
- Keywords:
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- 1610 GLOBAL CHANGE Atmosphere