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首页> 外文期刊>Chinese science bulletin >Regional characteristics of the interdecadal turning of winter/summer climate modes in Chinese mainland
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Regional characteristics of the interdecadal turning of winter/summer climate modes in Chinese mainland

机译：中国大陆冬夏气候模式年代际转换的区域特征

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摘要

Tome and Miranda's climate trend turning discriminatory model is used to identify the spatial-temporal characteristics of the interdecadal turning of winter/summer climate modes at stations and in eight sub-areas over Chinese mainland based on the 1961-2000 observations. It is found that the stations with close occurrence years of the interdecadal trend turning (ITT) and coincident trends after the ITT exhibit a zonal distribution. A view is accordingly proposed that the interdecadal turnings of climate modes in China have remarkably regional structures. The research results show that after the early 1980s, winter climate over Chinese mainland overall trends towards a "warm-wet" mode, while summer climate had an abrupt change into "warm wet" mode in the late 1980s, suggesting that the time of the "warm-wet" mode turning for winter climate is earlier than that for summer climate. The regional characteristics and test results of the ITTs in eight sub-areas suggest that winter climate exhibits a distinctive "warm-dry" trend in North China after the late 1970s, and a slight "warm-dry" trend in Northeast China, South China, and Southwest China after the late 1980s. A "warm-wet" trend appears in the rest four sub-areas (the middle and lower reaches of the Yangtze River and the Huaihe River Valley, briefly Jianghuai, the east of the Tibetan plateau, and the east and west of Northwest China) after the early 1980s. The summer climate trends towards a "warm-dry" mode in Northeast China, North China and the east of Northwest China after the late 1980s, but a "warm-wet" mode appears in Southwest China and the east of the Tibetan plateau after the middle 1970s, as well as in Jianghuai and the west of Northwest China after the early 1980s. Specially, summer climate in South China started a "cold-wet" trend in 1984.
机译：使用Tome和Miranda的气候趋势转向判别模型，基于1961-2000年的观测结果，确定了中国大陆站点和八个子区域中冬/夏季气候模式年代际变化的时空特征。发现年代际趋势转折（ITT）发生时间接近且ITT之后趋势一致的台站表现出带状分布。因此认为，中国气候模式的年代际转折具有明显的区域结构。研究结果表明，在1980年代初之后，中国大陆的冬季气候总体趋向于“暖湿”模式，而在1980年代后期，夏季气候突然转变为“暖湿”模式。冬季气候的“温湿”模式转换要早于夏季气候的模式转换。 ITTs在八个子区域中的区域特征和测试结果表明，1970年代后期后，华北地区的冬季气候表现出独特的“暖干”趋势，而华北地区的华南则呈现出轻微的“暖干”趋势。和1980年代后期以后的西南地区。其余四个子区域（长江中下游和淮河流域，简称江淮，青藏高原东部，西北西北）出现了“暖湿”趋势。在1980年代初期之后。 1980年代后期以来，中国东北，华北和西北东部的夏季气候趋于“暖干”模式，但在西南地区和青藏高原东部之后，夏季出现了“暖湿”模式。 1970年代中期，以及1980年代初期以后的江淮和西北西北地区。特别是，华南地区的夏季气候于1984年开始出现“冷湿”趋势。

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