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DOI | 10.1007/s00382-017-3597-x |
Assessment of the performance of CORDEX-SA experiments in simulating seasonal mean temperature over the Himalayan region for the present climate: Part I | |
Nengker, T.; Choudhary, A.; Dimri, A. P. | |
2018-04-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 50页码:2411-2441 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | The ability of an ensemble of five regional climate models (hereafter RCMs) under Coordinated Regional Climate Downscaling Experiments-South Asia (hereafter, CORDEX-SA) in simulating the key features of present day near surface mean air temperature (T-mean) climatology (1970-2005) over the Himalayan region is studied. The purpose of this paper is to understand the consistency in the performance of models across the ensemble, space and seasons. For this a number of statistical measures like trend, correlation, variance, probability distribution function etc. are applied to evaluate the performance of models against observation and simultaneously the underlying uncertainties between them for four different seasons. The most evident finding from the study is the presence of a large cold bias (-6 to -8 A degrees C) which is systematically seen across all the models and across space and time over the Himalayan region. However, these RCMs with its fine resolution perform extremely well in capturing the spatial distribution of the temperature features as indicated by a consistently high spatial correlation (greater than 0.9) with the observation in all seasons. In spite of underestimation in simulated temperature and general intensification of cold bias with increasing elevation the models show a greater rate of warming than the observation throughout entire altitudinal stretch of study region. During winter, the simulated rate of warming gets even higher at high altitudes. Moreover, a seasonal response of model performance and its spatial variability to elevation is found. |
英文关键词 | RCMs CORDEX-SA Himalayan region Temperature Climatology Seasonal Cold bias Elevation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428600200007 |
WOS关键词 | GRIDDED PRECIPITATION DATASET ; SURFACE AIR-TEMPERATURE ; UPPER INDUS BASIN ; TIBETAN PLATEAU ; HINDU-KUSH ; KARAKORAM-HIMALAYA ; WESTERN HIMALAYAS ; MOUNTAIN REGIONS ; COMPLEX TERRAIN ; UNITED-STATES |
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/36087 |
专题 | 气候变化 |
作者单位 | Jawaharlal Nehru Univ, Sch Environm Sci, New Delhi 110067, India |
推荐引用方式 GB/T 7714 | Nengker, T.,Choudhary, A.,Dimri, A. P.. Assessment of the performance of CORDEX-SA experiments in simulating seasonal mean temperature over the Himalayan region for the present climate: Part I[J]. CLIMATE DYNAMICS,2018,50:2411-2441. |
APA | Nengker, T.,Choudhary, A.,&Dimri, A. P..(2018).Assessment of the performance of CORDEX-SA experiments in simulating seasonal mean temperature over the Himalayan region for the present climate: Part I.CLIMATE DYNAMICS,50,2411-2441. |
MLA | Nengker, T.,et al."Assessment of the performance of CORDEX-SA experiments in simulating seasonal mean temperature over the Himalayan region for the present climate: Part I".CLIMATE DYNAMICS 50(2018):2411-2441. |
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