Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-019-04905-y |
Surface pressure and elevation correction from observation and multiple reanalyses over the Tibetan Plateau | |
You, Qinglong1,2; Bao, Yuntao3; Jiang, Zhihong3; Pepin, Nick4; Moore, G. W. K.5 | |
2019-11-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:5893-5908 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; England; Canada |
英文摘要 | Surface pressure reflects the deep structure of the overlying atmosphere, and is recognized as an indicator of climate change. In this study, observed surface pressure at 71 stations over the Tibetan Plateau (TP) during 1979-2013 is analyzed and compared with monthly means from multiple reanalyses (NCEP1, NCEP2, ERA-Interim, MERRA and JRA55). During the studied period, surface pressure from both observations and the reanalyses increases slowly up until the mid-2000s but shows a decrease afterwards, leading to a recent fall in pressure. However, the surface pressure over the TP in spring has increased, probably explained by the thermal condition such as diabatic heating change. Observations and the multiple reanalyses are positively correlated at most locations indicating that reanalyses reproduce the interannual variation and long-term trend of observed surface pressure fairly well. Despite high inter-annual correlation, trend magnitudes over 1979-2013 are varied, with observations showing decreased pressure at most stations, but reanalyses showing increases in many cases. Compared with observations however, surface pressures from all reanalyses are underestimated usually by about 3-6%. There are significant positive correlations between surface pressure bias and elevation bias, suggesting that overestimation of elevation partially explains the surface pressure bias. A topographical correction method using the hydrostatic equation is therefore conducted and more than 90% of the biases of the reanalyses can be eliminated. Overall, this study points to the importance of better analyzing the importance of topography in the western TP to enhance understanding of reanalysis uncertainties in this region. |
英文关键词 | Tibetan Plateau Surface pressure Multiple reanalyses Trend |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000493469900042 |
WOS关键词 | SEA-LEVEL PRESSURE ; NCEP-NCAR ; ATMOSPHERIC MASS ; ANNUAL CYCLE ; WATER-VAPOR ; ERA-INTERIM ; TEMPERATURE ; CLIMATE ; VARIABILITY ; PATTERNS |
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/187930 |
专题 | 气候变化 |
作者单位 | 1.Fudan Univ, Dept Atmospher & Ocean Sci, Shanghai 200438, Peoples R China; 2.Fudan Univ, Inst Atmospher Sci, Shanghai 200438, Peoples R China; 3.NUIST, Key Lab Meteorol Disaster, Minist Educ KLME, Nanjing 210044, Jiangsu, Peoples R China; 4.Univ Portsmouth, Dept Geog, Portsmouth PO1 3HE, Hants, England; 5.Univ Toronto, Dept Phys, Toronto, ON, Canada |
推荐引用方式 GB/T 7714 | You, Qinglong,Bao, Yuntao,Jiang, Zhihong,et al. Surface pressure and elevation correction from observation and multiple reanalyses over the Tibetan Plateau[J]. CLIMATE DYNAMICS,2019,53:5893-5908. |
APA | You, Qinglong,Bao, Yuntao,Jiang, Zhihong,Pepin, Nick,&Moore, G. W. K..(2019).Surface pressure and elevation correction from observation and multiple reanalyses over the Tibetan Plateau.CLIMATE DYNAMICS,53,5893-5908. |
MLA | You, Qinglong,et al."Surface pressure and elevation correction from observation and multiple reanalyses over the Tibetan Plateau".CLIMATE DYNAMICS 53(2019):5893-5908. |
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