Climatology of tropical cyclone rainfall in the southeastern United States

Knight, David B. and Davis, Robert E. (2007) Climatology of tropical cyclone rainfall in the southeastern United States. Physical Geography, 28 2: 126-147. doi:10.2747/0272-3646.28.2.126


Author Knight, David B.
Davis, Robert E.
Title Climatology of tropical cyclone rainfall in the southeastern United States
Journal name Physical Geography   Check publisher's open access policy
ISSN 0272-3646
1930-0557
Publication date 2007-03
Sub-type Article (original research)
DOI 10.2747/0272-3646.28.2.126
Volume 28
Issue 2
Start page 126
End page 147
Total pages 22
Place of publication Columbia, MD, United States
Publisher Bellwether Publishing
Language eng
Abstract Rainfall associated with tropical cyclones contributes a significant amount to the annual rainfall in the southeastern United States. This study quantifies this amount from 1980-2004 as we compare the total rainfall to an amount excluding rainfall arising from tropical cyclones. Additionally, we use these precipitation amounts to examine the climatic water balance and observed hurricane-season moisture deficits and compare actual deficits to deficits with tropical cyclone rainfall removed. Tropical cyclones contribute as much as 15% of the hurricane-season rainfall along portions of the Carolinas. The Appalachian Mountains act as a barrier to the inland influence of tropical cyclone rainfall and generate a spatial rainfall gradient on mean precipitation maps. Within a hurricane-season, the percentage of rainfall that can be attributed to tropical cyclones tends to progress eastward throughout the season. Temporally, rainfall from tropical cyclones has increased over much of the region, while nontropical cyclone rainfall has largely remained unchanged. With respect to the water balance, soil moisture deficits would significantly increase if the southeastern United States did not receive rainfall from tropical cyclones. This would have consequences for the agricultural community and would increase the reliance on irrigation in agricultural production.
Keyword Tropical cyclone rainfall
Hurricane climatology
Soil moisture deficit
Climatic water balance
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
 
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