摘要
计算了华北、东北地区 1956～ 1995年稳定通过 0℃ (T≥ 0℃ )和稳定通过 10℃ (T≥ 10℃ )的积温 ,并对其变化趋势进行了分析讨论。结果表明 :华北、东北地区的积温存在明显的变化趋势 ,80、90年代以来积温呈波浪式的上升。积温的大小与持续期的长短关系密切 ,二者变化趋势吻合。积温和持续期与年平均气温的线性回归结果显示 :若年平均气温升高 1℃ ,则T≥ 0℃的积温将大约增加 117～ 2 52℃·d ,持续期将大约延长 5～ 13.5d。
In this paper, the accumulated temperatures higher than 0℃ (T≥0℃) and 10℃(T≥10℃) in North China and Northeast China during the period of 1956~1995 are calculated, and their change tendency are analyzed. The results indicate that the accumulated temperature in North China and Northeast China has an obvious changing tendency, and in 80~90’s the accumulated temperature raised gradually as a wave. The accumulated temperature is closely related to the duration of T≥0℃ (or T≥10℃) period and their changing tendency are similar. The results of the regression analysis between the accumulated temperature and the duration of T≥0℃ period and mean annual temperature show that if the mean annual temperature raise 1℃ the accumulated temperature of T≥0℃ will increase about 117～252℃·d and the duration of T≥0℃ period will extend about 5～13.5days.
出处
《中国农业气象》
CSCD
2000年第3期1-5,共5页
Chinese Journal of Agrometeorology
基金
国家气象中心"九五"课题资助
关键词
积温
持续期
华北地区
东北地区
变化趋势
The accumulated temperature
The duration of T≥0℃ (or T≥10℃) period
The first day
The last day
Moving average
