Chinese Journal of Agrometeorology ›› 2019, Vol. 40 ›› Issue (02): 105-113.doi: 10.3969/j.issn.1000-6362.2019.02.005

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Method to Characterize the Degree of Chilling Injury with the Cloudy-Cold Index

CHEN Hui-lin, HUO Zhi-guo, TIAN Guang-hui, TONG Jin-he   

  1. 1. Hainan Institute of Meteorological Sciences, Haikou 570203, China; 2. Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 570203; 3. Chinese Academy of Meteorological Sciences, Beijing 100081
  • Online:2019-02-20 Published:2019-02-16

Abstract:

In view of the problem that the existing chilling injure analysis lacked the representation of the overcast and rainy condition, the cloudy-cold index model was proposed in this article. Based on the ranking of the degrees of cloudy and cold of each city and county in Hainan by the experts of agriculture and meteorology, and daily meteorological data from 1971 to 2010 in each city and county in Hainan, the cloudy-cold index model which could reflect the combined effect of low temperature intensity and rainy-sunless was constructed by using the Uniform Experiment Design method. Based on the relationship in the cloudy-cold index model, the cloudy-cold index of each cloudy-cold event in cities and counties in Hainan during the period from 1971 to 2010 was calculated. Severe, moderate and mild chilling injures and their indicators were divided by 10%, 30% and 60% of the cloudy-cold index sequence. The distribution and changes of the chilling injure in Hainan were further analyzed, and the geographical distribution characteristics of the cold disaster were consistent with the actual service of the chilling injure in practice. The yearly change of the cold disaster was well confirmed in the record of the chilling injure in the Chinese Meteorological Disaster Ceremony which showed that the model had a certain practical application, which can provide a new technical method for the monitoring, early warning and evaluation of chilling injure.

Key words: Cloudy-cold index, Chilling injury, Model, Uniform design experimentation