干旱区生态环境知识资源中心(Arid): 江苏省近50 a气候干湿特征研究

Arid

	江苏省近50 a气候干湿特征研究
其他题名	Arid and moist climate characteristics in Jiangsu Province in recent 50 years
	赵晶 1; 包云轩 2; 张仁陟 1; 孟翠丽 3; 申双和 2
来源期刊	大气科学学报
ISSN	1674-7097
出版年	2014
卷号	37 期号:5 页码:623-630
中文摘要	根据江苏省1960-2009年54个气象台站常规气象观测资料,利用Penman-Monteith公式计算了全省各地区50 a的逐日潜在蒸散量,结合逐日降水量,推算出了相对湿润度指数值,并采用国家标准《气象干旱等级》(GB/T20481-2006)中的相对湿润度分级指标对全省干湿状况进行了评估,分析其时空变化特征。研究表明:1)就全年而言,江苏省半干旱区与湿润区各占50%左右的面积,其中淮北、江淮北部、苏北沿海的北部为半干旱区,江淮南部、苏北沿海的南部、沿江、苏南地区为湿润区;2)降水量和潜在蒸散量是影响相对湿润度指数的两个关键因子,降水量的变化对相对湿润度的时空分布起着主导作用,潜在蒸散量起着辅助作用。3)江苏省1 a中冬季的南北气候干湿反差最大、夏季最小,湿润区范围夏季最大、秋季最小,半干旱区范围秋季最大、夏季没有,干旱区范围春季最大、夏季和秋季没有。夏季气候最湿润、春季气候最干燥。4)淮北和苏北沿海地区的相对湿润度指数年变化呈"单峰型",江淮、沿江和苏南地区的年变化呈"双峰型",苏北沿海地区相对湿润度年内变化最大,沿江地区最小。
英文摘要	Based on the conventional weather observational data from 54 meteorological stations in Jiangsu Province from 1960 to 2009,the daily potential evapotranspiration at different stations in this province was calculated by Penman-Monteith Equation.Relative moisture index(I_(RM)),an index reflecting arid and moist climate characteristics,was used to evaluate the arid and moist climate conditions in a region.The daily I_(RM) values at different stations in the province were computed from the observed precipitation and the calculated evapotranspiration.According to the Chinese Meteorological Drought Grades in the National Standard GB/T20481-2006 of China,the computed I_(RM) values were classified into three grades and the different statistical parameters of I_(RM) were used to analyze the arid and moist characteristics in different regions of Jiangsu Province.The research results indicate:1) In a year,the semi-arid area and the moist area occupied a half of the total area in Jiangsu province respectively.Among them,the northern side of the Huaihe River,the north part of the region between the Yangtze River and the Huaihe River and the north part of the coastal region were semi-arid area and the south part between the Yangtze River and the Huaihe River,the south part of the coastal region,the valley of the Yangtze River and the south part of Jiangsu Province were the moist area;2) The precipitation and the potential evapotranspiration in a region were the two key factors influencing the relative moisture index and the climatic dryness and wetness characteristics in the region.The change of precipitation played a dominant role in the tempo-spatial changes of I_(RM) and the variation of the potential evapotranspiration played an auxiliary effect;3) In winter,there was the most obvious arid and moist contrast between the south and north parts of Jiangsu Province while it was the least in summer.The scope of moist area was largest in summer but it was smallest in autumn.The scope of semi-arid area was largest in autumn but it had no distribution in summer.The scope of arid area was largest in spring but there were no arid area in summer and autumn.The climate in Jiangsu Province was moistest in summer but it was aridest in spring;4) The annual change of I_(RM) presented a single peak on the north side of the Huaihe River and the coastal region and there were two peaks in the region between the Yangtze River and the Huaihe River,the Valley of the Yangtze River and the south part of Jiangsu Province.The interannual variability of I_(RM) was largest in the coastal region but it was smallest in the valley of the Yangtze River.
中文关键词	干湿状况 ; Penman-Monteith公式 ; 潜在蒸散 ; 相对湿润度指数 ; 时空变化
英文关键词	arid and moist climate characteristics Penman-Monteith Equation potential evapotranspiration relative moisture index(I_(RM)) tempo-spatial change
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5281302
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230898
作者单位	1.甘肃农业大学资源与环境学院, 兰州, 甘肃 730070, 中国; 2.南京信息工程大学, 江苏省农业气象重点实验室, 南京, 江苏 210044, 中国; 3.武汉农业气象试验站, 武汉, 湖北 430040, 中国
推荐引用方式 GB/T 7714	赵晶,包云轩,张仁陟,等. 江苏省近50 a气候干湿特征研究[J]. 甘肃农业大学,2014,37(5):623-630.
APA	赵晶,包云轩,张仁陟,孟翠丽,&申双和.(2014).江苏省近50 a气候干湿特征研究.大气科学学报,37(5),623-630.
MLA	赵晶,et al."江苏省近50 a气候干湿特征研究".大气科学学报 37.5(2014):623-630.