Title

Developing a new atmospheric dispersion index for the southeastern United States

Advisor

Gutter, Barrett F.

Committee Member

Mercer, Andrew E.

Committee Member

Brown, Michael E.

Date of Degree

5-1-2020

Original embargo terms

Visible to MSU only for 2 years||forever||10000-01-01

Document Type

Graduate Thesis - Open Access

Abstract

The Memphis, Tennessee National Weather Service (NWS) currently has issues with their atmospheric dispersion index (LVORI), and is looking for a new index that better represents smoke dispersion in their County Warning Area (CWA). Forecast soundings at hour 00 and hour 48 from the North American Mesoscale (NAM) model were collected at various locations in the southeastern United States. Using the data collected, a new index equation was developed. A bootstrapping analysis was performed to determine if the mean index number corresponding to low visibility was statistically significantly different and greater than the mean index number corresponding to high visibility for forecast hour 00 and hour 48. Based on the results of this study, the mean index number was greater for low visibility, but was not statistically significantly different for forecast hour 00. For forecast hour 48, the mean index number was greater and statistically significantly different for low visibility.

URI

https://hdl.handle.net/11668/16655

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