Recent climatic trends and linkages to river discharge in Central Vietnam

Recent climatic trends and linkages to river discharge in Central Vietnam
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最近的气候趋势以及与越南中部河流流量的联系

DOI:
10.1002/hyp.9693
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发表时间:
2013
影响因子:
3.2
通讯作者:
Souvignet M
Souvignet M
中科院分区:
地球科学3区
文献类型:
--
作者:
Souvignet M

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在这项研究中,降雨量,温度和河流流量的变化进行了分析,在过去的三十年中,越南中部。趋势和降雨指数在不同的时间水平上使用非参数检验进行评估。为了克服稀疏的本地可用网络,除了现有的雨量计,高分辨率APHRODITE网格数据集被使用。最后,现有的流量变化和趋势之间的联系,在降雨和temperature.Results的降雨强度(+15%/十年),更极端和更长的事件的指示。冬季降雨量的显著增加和连续干旱天数的减少为越南中部雨季的延长提供了有力的证据。此外,基于针杆石的趋势表明冬季和年度趋势中存在强烈的地形信号。这些结果强调了全球范围内气候变化影响的地方差异。因此,重要的是,变化检测调查是在当地规模进行。在最低温度趋势中检测到非常弱的信号(+0.2 ° C/十年)。河流流量趋势显示,在过去几十年中,平均流量增加(31%至35%/十年)。这一增长的54%至74%是由于降水量的增加。最大流量也对降水量变化有显著的响应,导致雨季延长和极端降雨事件增加。这种趋势可能与越南中部的洪水可能增加有关,这对该地区未来的适应规划和管理以及洪水防备非常重要。版权所有© 2012约翰威利父子有限公司.
In this study, change in rainfall, temperature and river discharge are analysed over the last three decades in Central Vietnam. Trends and rainfall indices are evaluated using non‐parametric tests at different temporal levels. To overcome the sparse locally available network, the high resolution APHRODITE gridded dataset is used in addition to the existing rain gauges. Finally, existing linkages between discharge changes and trends in rainfall and temperature are explored.Results are indicative of an intensification of rainfall (+15%/decade), with more extreme and longer events. A significant increase in winter rainfall and a decrease in consecutive dry days provides strong evidence for a lengthening wet season in Central Vietnam. In addition, trends based on APHRODITE suggest a strong orographic signal in winter and annual trends. These results underline the local variability in the impacts of climatic change at the global scale. Consequently, it is important that change detection investigations are conducted at the local scale. A very weak signal is detected in the trend of minimum temperature (+0.2°C/decade). River discharge trends show an increase in mean discharge (31 to 35%/decade) over the last decades. Between 54 and 74% of this increase is explained by the increase in precipitation. The maximum discharge also responds significantly to precipitation changes leading to a lengthened wet season and an increase in extreme rainfall events. Such trends can be linked with a likely increase in floods in Central Vietnam, which is important for future adaptation planning and management and flood preparedness in the region. Copyright © 2012 John Wiley & Sons, Ltd.
DOI: --
发表时间: 2010
期刊:
影响因子: --
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通讯作者: J. Labraga
DOI: 10.1023/b:clim.0000043144.69736.b7
发表时间: 2004-07
期刊: Climatic Change
影响因子: 4.8
作者:
R. Wassmann;N. X. Hiền;C. T. Hoanh;T. Tuong
通讯作者: R. Wassmann;N. X. Hiền;C. T. Hoanh;T. Tuong
DOI: 10.1175/bams-d-11-00122.1
发表时间: 2012-09-01
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DOI: --
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期刊: Journal of Climate
影响因子: 4.9
作者:
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DOI: --
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