广东省1961—2016年极端气候时空变化研究

doi:10.3969/j.issn.1001-9235.2021.12.001

摘要/Abstract

摘要： 极端气候对自然生态系统、社会经济发展、人类健康福祉和生物多样性的影响最为严重且具有破坏性。对广东省1961—2016年期间极端气候的时空变化进行了研究。结果表明,大部分极端降水指标在时间序列上保持一致,但5 d最大降水量(R_X5day)和持续湿润指数(CWD)序列发生突变;除平均日较差(DTR)外,大部分极端气温指标在时间序列上存在突变。除CWD外,各项极端降水指数基本呈现不显著上升趋势;各项极端气温指数基本呈现不同程度的上升趋势,但DTR和作物生长期(GSL)呈现不显著下降趋势。极端降水指标主周期在2.03~4.00 a范围内;而极端气温指标主周期在2.00~3.50 a范围内。极端降水指标和极端气温指标在空间分布上存在差异,各有特点。

关键词: 极端降水, 极端气温, 时空变化, 广东省

Abstract: Extreme climate has the most serious and destructive impact on natural ecosystems,socio-economic development,human health and biodiversity.This paper examines the spatial and temporal variability of climate extremes in Guangdong Province during the period 1961—2016.The results show that most of the extreme precipitation indicators remain consistent in the time series,but the maximum 5 day precipitation amount (R_X5day) and the consecutive wet days (CWD) series mutate.Except for the diurnal temperature range(DTR),most of the extreme temperature indicators have abrupt changes in the time series.Except for CWD,all extreme precipitation indexes basically showed an insignificant upward trend;all extreme temperature indexes basically showed an upward trend in varying degrees,but DTR and growing season length (GSL) showed no significant downward trend.The main period of extreme precipitation index is in the range of 2.03~4.00 a;while the main period of extreme temperature index is in the range of 2.00~3.50 a.There are differences in the spatial distribution of extreme precipitation indicators and extreme temperature indicators,and each one has its own characteristics.

Key words: extreme precipitation, extreme temperature, temporal and spatial change, Guangdong Province

中图分类号:

TV125

黄伟杰, 张大伟, 张欣, 李青峰, 李望鸣, 王亚迪. 广东省1961—2016年极端气候时空变化研究[J]. 人民珠江, 2021, 42(12): 1-16.

HUANG Weijie, ZHANG Dawei, ZHANG Xin, LI Qingfeng, LI Wangming, WANG Yadi. Research on Temporal and Spatial Changes of Extreme Climate in Guangdong Province from 1961 to 2016[J]. Pearl River, 2021, 42(12): 1-16.

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