| 黑龙江省1967年至2007年极端气温与降水综合强度的时空特征分析 |
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| 引用本文： | 高永刚.黑龙江省1967年至2007年极端气温与降水综合强度的时空特征分析[J].资源科学,2012,34(11):2170-2180. |
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| 作者姓名： | 高永刚 |
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| 作者单位： | 黑龙江省气象科学研究所, 哈尔滨150030 |
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| 基金项目： | 国家自然科学基金项目(编号:41165005);黑龙江省气象局科研基金项目(编号:201003)。 |
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| 摘 要： | 利用黑龙江省73个气象站1967年-2007年的逐日气温和降水量资料, 基于极端气候事件综合强度模型方法, 分析了黑龙江省极端气温与降水事件的时空变化特征。研究表明:①极端高温事件综合强度在年代际变化上夏与秋季总体呈增强趋势, 20世纪90年代后增强更为显著。极端低温事件综合强度在年代际变化上春与冬季总体呈明显减弱趋势, 其中冬季减弱趋势较显著;②极端降水事件综合强度在年代际变化上春秋两季呈减弱趋势, 夏冬两季呈增强趋势, 其中秋季减弱较显著, 冬季增强较显著;③极端高温事件综合强度夏秋两季影响较重区域为松嫩平原西部和三江平原地区;极端低温事件综合强度春冬两季影响较重区域为三江平原地区、牡丹江地区北部和哈尔滨地区西北部;④极端降水事件综合强度春秋两季从西到东递增, 夏季中部地区较强, 冬季中部与东部地区较强;四季综合强度影响较重区域为大兴安岭最北端的漠河县、小兴安岭地区、三江平原东部边缘局部区域和牡丹江半山区。
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| 关 键 词： | 黑龙江省 极端气温事件 极端降水事件 综合强度 特征 |
| 修稿时间： | 9/4/2012 12:00:00 AM |
Synthetical Intensity Characteristica of Interdecadal Extreme Air Temperature and Precipitation Events in Heilongjiang Province from 1967 to 2007 |
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| GAO Yonggang.Synthetical Intensity Characteristica of Interdecadal Extreme Air Temperature and Precipitation Events in Heilongjiang Province from 1967 to 2007[J].Resources Science,2012,34(11):2170-2180. |
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| Authors: | GAO Yonggang |
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| Institution: | Heilongjiang Institute of Meteorological Science, Harbin 150030, China |
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| Abstract: | The discussion of interdecadal and distribution characteristics of synthetical intensity for extreme air temperature and precipitation events is important to the ecological environment, and disaster prevention and reduction. With daily air temperature and precipitation data from 73 meteorological stations from 1967-2007 in Heilongjiang Province, based on the synthetical intensity model method of extreme climatic events, the synthetical intensity characteristics of interdecadal and distribution for extreme air temperature and precipitation events were analyzed in Heilongjiang Province. We found that the synthetical intensity trends of interdecadal variability of extreme high temperature generally increased in summer and autumn. The increased trend of synthetical intensity was more prominent especially after the 1990s; the increased trend was most prominent for the Songnen plain. Synthetical intensity trends of interdecadal variability of extreme low temperature events generally decreased in spring and winter; the decreased trend was more prominent in winter, the extreme low temperature events of the Sanjiang plain and Songnen plain in spring and winter after 1995 are also worth noting. Synthetical intensity trends of interdecadal variability of extreme precipitation events decreased in spring and autumn, and increased in summer and winter; the decreased trend was more prominent in autumn and the increased trend was most prominent in winter. Synthetical intensity increased markedly in the beginning of spring (Sanjiang plain and Songnen plain) and winter (three typical areas) after the 21th century, snow disasters were more frequent. Synthetical intensity of three typical areas were decreased markedly in summer and autumn after the 21th century, water resources were often short and the warm dry climate trend of Songnen plain could be increased. The most impacted regions of synthetical intensity of extreme high temperature events in distribution were in the western Songnen plain, Sanjiang plain in summer and autumn in Heilongjiang. The extreme low temperature events in distribution were Sanjiang plain, the north of Mudanjiang region, and the north-west of Harbin in spring and winter. The most impacted regions of the synthetical intensity of extreme precipitation events in distribution were Mohe county northest of the Daxingan Mountains, Xiaoxingan Mountains, east of the Sanjiang plain, and the semi-mountainous area of Mudanjiang region. The distribution characteristics were different in every season, the distribution of the synthetical intensity was increased from the west to the east in spring and autumn and the synthetical intensity was stronger in middle regions in summer. |
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| Keywords: | Heilongjiang Province Extreme air temperature events Extreme precipitation events Synthetical intensity Characteristic |
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