Chinese Journal of Agrometeorology ›› 2014, Vol. 35 ›› Issue (04): 434-439.doi: 10.3969/j.issn.1000-6362.2014.04.012

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Teleconnection Analysis Between Spring Frost Damage on Tea in Zhejiang Province and Sea Surface Temperature in Pacific

WU Yang，JIN Zhifeng，YE Jiangang，YANG Zaiqiang，HU Bo，LI Renzhong   

  1. Zhejiang Meteorological Service Center，Hangzhou 310017，China；Jiangsu Key Laboratory of Agricultural Meteorology，Nanjing210044；Zhejiang Climate Center， Hangzhou310017；Shaoxing Meteorological Bureau，Zhejiang province，Shaoxing312000
  • Received:2013-09-26 Online:2014-08-20 Published:2015-02-11

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Abstract: Based on the daily minimum temperature of 68 stations in Zhejiang during 1971-2013， the spring frost damage index defined. The spatial and temporal evolution of spring frost damage was analyzed by using Kriging interpolation and statistical methods. The teleconnection between the spring frost damage days and Pacific SST （sea surface temperature） during the same period was also studied by correlation analysis and SVD. The results showed that the northern part of Zhejiang was affected more seriously by the spring frost damage， especially the north west of Zhejiang， the southern Zhejiang and Jinhua Quzhou basin were the less influenced regions. The spring frost damage occurred frequently before mid1990s， and declined since late1990s.The spring frost damage index was significantly connected with the Southern Pacific SST over （130°-170°W，18°-28°S） in the former year， which could be a clue to the spring frost damage forecast in Zhejiang.

Key words: Frost damage, Singular value decomposition（SVD）, Tea, Index of frost damage