Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5112 |
Evaluating historical drought characteristics simulated in CORDEX East Asia against observations | |
Um, Myoung-Jin; Kim, Yeonjoo; Kim, Jeongbin | |
2017-11-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | This study aims to understand how well regional climate models (RCMs) reproduce the observed characteristics of droughts based on the standardized precipitation evapotranspiration index (SPEI) over East Asia. While RCMs from CORDEX East Asia have been evaluated in terms of the mean and extreme values of precipitation and air temperature in the literature, their performance based on drought characteristics has not been revealed. Therefore, we investigate the temporal characteristics, such as the trend and stationarity, and other drought measures, such as the drought frequency, duration, severity and spatial extent, to determine how well these factors are captured and how they vary among the different models, including four RCMs, their ensemble mean and a driving general circulation model (GCM). The results are compared to a 26-year observational dataset (1980 to 2005) from APHRODITE. Based on our analyses of the results, the specific findings are as follows. First, based on Mann-Kendall (MK) trend tests, the SPEI shows decreasing trends over the northern part of the domain and no trends in other regions, and these tendencies are captured by a limited number of RCMs. Notably, these trends were not captured by the ensemble mean of RCMs. Second, based on the Phillips-Perron stationarity test, stationarity is dominant in most regions based on both the observations and the RCMs. Third, the frequency decreases with increasing duration in all regions. This tendency is generally captured in the models to varying extents. Fourth, the drought severity decreases with increasing duration in all cases, as expected. However, the drought severity diverges markedly among the RCMs. Finally, estimates of the spatial extent using the RCMs are generally accurate in wet regions but inaccurate in dry regions. Furthermore, the spatial extents of the droughts diverge among the RCMs, and the models fail to accurately capture drought events with large spatial scales. |
英文关键词 | SPEI regional climate models drought |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000414329800013 |
WOS关键词 | REGIONAL CLIMATE MODELS ; ATMOSPHERE COUPLED MODEL ; STAND-ALONE RCM ; SOUTH-KOREA ; PRECIPITATION EXTREMES ; FUTURE DROUGHT ; TRENDS ; PROJECTIONS ; ENSEMBLE ; CHINA |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/36583 |
专题 | 气候变化 |
作者单位 | Yonsei Univ, Dept Civil & Environm Engn, 50 Yonsei Ro, Seoul 120749, South Korea |
推荐引用方式 GB/T 7714 | Um, Myoung-Jin,Kim, Yeonjoo,Kim, Jeongbin. Evaluating historical drought characteristics simulated in CORDEX East Asia against observations[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(13). |
APA | Um, Myoung-Jin,Kim, Yeonjoo,&Kim, Jeongbin.(2017).Evaluating historical drought characteristics simulated in CORDEX East Asia against observations.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(13). |
MLA | Um, Myoung-Jin,et al."Evaluating historical drought characteristics simulated in CORDEX East Asia against observations".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.13(2017). |
条目包含的文件 | 条目无相关文件。 |
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