Chinese Journal of Agrometeorology

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Prediction and Early Warning of Fruit Tree Freezing Damage in Winter due to Low Temperature in Fujian Province

XIA Li-hua1,ZHANG Li-duo2,LIN He-fu3,LENG Dian-song1,CAI Wen-hua4(1.Fujian Meteorological Observatory,Fuzhou 350001,China;2.Meteorological Bureau of Xiamen City;3.Meteorological Bureau of Longyan City;4.Institute of Meteorological Science of Fujian Province)   

  • Online:2007-04-10 Published:2007-04-10

Abstract: Based on the meteorological data from 1963 to 2004 in Fujian Province,the circulation system of the low temperature weather in winter(November to February next year) was analyzed.The results showed that the 57.1% of the low temperature weather in winter was from west way.The intensity and way of the cold high atmospheric pressure center,Φ568(the latitude at the nodical point of the 5680 geopotential meter line with the 120°E line in the 500hPa high altitude) and Φ850(the latitude at the nodical point of the 0°C temperature line with the 120°E line in the 850hPa high altitude) were closely related to the minimum temperature.The equation of short-term forecast of low temperature weather for Fuzhou,Xiamen and Shaowu was established by stepwise regression analysis.The detemperature rate was estimated by cloud cover,wind velocity.humidity(N20,F20,U20)at 20:00 o'clock.The index of freezing damage of different fruit tree varieties was determined and integrated to the early warning systems.

Key words: Fruit tree freezing damage, Fruit tree freezing damage, Low temperature forecast, Early warning of freezing damage, Prevention measure