兰州交通大学学报
蘭州交通大學學報
란주교통대학학보
JOURNAL OF LANZHOU JIAOTONG UNIVERSITY(Natural Sciences)
2014年
3期
31-34
,共4页
ENSO指数%降水%延时相关分析
ENSO指數%降水%延時相關分析
ENSO지수%강수%연시상관분석
ENSO index%precipitation%delay correlation analysis
将不同 ENSO 指数与我国0.5°×0.5°月降水量网格数据进行步长为0~12个月的延时相关分析,结果显示我国降水对不同的 ENSO 指数的响应有很大差异.选择相关性较显著及区域分布明显的 Nino1+2和 Nino3为ENSO 代表指数,这两个指数与我国大部分地区降水呈明显的正相关,按响应程度该两指数对我国降水影响可分为东北地区、东南地区、西北北部及西南西部地区、西北东南及西南东部地区等5个区域.我国降水对 ENSO 代表指数响应最大时延时月份,可以分为华北北部地区、西南西部地区、全国大部地区、东南地区等4个区域.
將不同 ENSO 指數與我國0.5°×0.5°月降水量網格數據進行步長為0~12箇月的延時相關分析,結果顯示我國降水對不同的 ENSO 指數的響應有很大差異.選擇相關性較顯著及區域分佈明顯的 Nino1+2和 Nino3為ENSO 代錶指數,這兩箇指數與我國大部分地區降水呈明顯的正相關,按響應程度該兩指數對我國降水影響可分為東北地區、東南地區、西北北部及西南西部地區、西北東南及西南東部地區等5箇區域.我國降水對 ENSO 代錶指數響應最大時延時月份,可以分為華北北部地區、西南西部地區、全國大部地區、東南地區等4箇區域.
장불동 ENSO 지수여아국0.5°×0.5°월강수량망격수거진행보장위0~12개월적연시상관분석,결과현시아국강수대불동적 ENSO 지수적향응유흔대차이.선택상관성교현저급구역분포명현적 Nino1+2화 Nino3위ENSO 대표지수,저량개지수여아국대부분지구강수정명현적정상관,안향응정도해량지수대아국강수영향가분위동북지구、동남지구、서북북부급서남서부지구、서북동남급서남동부지구등5개구역.아국강수대 ENSO 대표지수향응최대시연시월빈,가이분위화북북부지구、서남서부지구、전국대부지구、동남지구등4개구역.
The different ENSO indexes with monthly precipitation grid date of 0.5°×0.5°in China are analyzed by delay correlation for the step of 0~12 month.The result reveals that the precipi-tation in China shows different responses with different ENSO indexes.Nino1 +2 and Nino3 are selected as the representative indexes by contrasting the significance and distribution area of the correlation.These ENSO indexes show an obviously positive correlation with the precipitation in China.The distribution of correlation in China can be divided into five regions as follows:north-east,southeast,north of northwest,west of southwest,southeast of northwest and east of south-west of China.China can be divided into four regions by most obvious response time as follows:northern north China,southwest western region,most areas of China and southeast.