Influence of Sea Surface Temperature Anomalies of North Pacific on Spring Forest Fire in Sichuan Province

doi:10.11924/j.issn.1000-6850.casb15090020

Abstract

Abstract: The paper aims to protect the ecological environment and forest resources, perfect the forest fire forecasting and warning operation in Sichuan Province. The temporal and spatial characteristics of forest fire in Sichuan and their relationship with the SST anomalies of North Pacific were analyzed, using the original data of forest fire from 1979-2012, the NCEP/NCAR reanalysis data, and the sea surface temperature data from NOAA. The result showed that a close negative/positive correlation existed between the forest fire in the major disaster area (Liangshan Prefecture, Panzhihua City and Ganzi) and the early winter SST in the neighborhood of the North Equatorial Current Region (5°-25°, 165°E-140°W)/the North Pacific drift (25°-45°N, 165°E-140°W), respectively. A discriminate index for diagnosing and forecasting the spring forest fire was defined according to the correlation distribution characteristics. By analyzing the relationship between FI and 500 hPa height field in the northern hemisphere, the authors believed that the North Pacific SST abnormalities were likely to affect spring forest fire in major disaster area through the persistent influence on Eurasian high latitude circulation anomalies.

CLC Number:

Gan Weiwei,Yang Shuqun,Ma Zhenfeng and Liu Bo. Influence of Sea Surface Temperature Anomalies of North Pacific on Spring Forest Fire in Sichuan Province[J]. Chinese Agricultural Science Bulletin, 2016, 32(6): 132-138.

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