An analysis of northern hemisphere block sizes compared to climatology and seasonal variations

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An analysis of northern hemisphere block sizes compared to climatology and seasonal variations

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/15934

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Title: An analysis of northern hemisphere block sizes compared to climatology and seasonal variations
Author: Abraham, Justin John
Keywords: anticyclonic event
seasonal characteristics
blocking event
Date: 2012
Publisher: University of Missouri--Columbia
Abstract: The goal of the following research was to discover if any trends exist between the size of large-scale, mid-latitude anticyclonic events and seasonal characteristics. A 20-year analysis of North American blocking events was compiled by calculating the mean size of each event using NCEP-NCAR analyses and a simplified Rossby wave equation. Blocking events were identified using block definitions from previous studies and retrieved from the University of Missouri-Columbia blocking database. The sizes of blocking events were then compared to Northern Hemisphere climatological information derived in previous research. Block sizes were compared to El Niño- Southern Oscillation, blocking intensity as defined by Wiedenmann et al. 2002, and other seasonal characteristics. Results will assist researchers and long-range forecasters to predict the scale and potential impacts of blocking events, of which onset and duration are currently difficult to forecast.
URI: http://hdl.handle.net/10355/15934
Other Identifiers: AbrahamJ-072012-T476

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