A SYNOPTIC CLIMATOLOGY FOR FOREST-FIRES IN THE NE US AND FUTURE IMPLICATIONS FROM GCM SIMULATIONS

被引：15

作者：

TAKLE, ES

BRAMER, DJ

HEILMAN, WE

THOMPSON, MR

机构：

[1] Department of Agronomy and Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA

[2] USDA Forest Service, North Central Forest Experiment Station, East Lansing, MI

来源：

INTERNATIONAL JOURNAL OF WILDLAND FIRE | 1994年 / 4卷 / 04期

关键词：

D O I：

10.1071/WF9940217

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

We studied surface-pressure patterns corresponding to reduced precipitation, high evaporation potential, and enhanced forest-fire danger for West Virginia, which experienced extensive forest-fire damage in November 1987. From five years of daily weather maps we identified eight weather patterns that describe distinctive flow situations throughout the year. Map patterns labeled extended-high, back-of-high, and pre-high were the most frequently occurring patterns that accompany forest fires in West Virginia and the nearby four-stare region. Of these, back-of-high accounted for a disproportionately large amount of fire-related damage. Examination of evaporation acid precipitation data showed that these three patterns and high-to-the-south patterns ail led to drying conditions and all other patterns led to moistening conditions. Surface-pressure fields generated by the Canadian Climate Centre global circulation model for simulations of the present (1xCO(2)) climate and 2xCO(2) climate were studied to determine whether forest-fire potential would change under increased atmospheric CO2. The analysis showed a tendency for increased frequency of drying in the NE US, but the results were not statistically significant.

引用

页码：217 / 224

页数：8

共 15 条

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