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Evaluation of circulation-type classifications with respect to temperature and precipitation variations in the central and eastern Tibetan Plateau
Zhang, XW (Zhang, Xiaowen)1,2; Chen, DL (Chen, Deliang)3,4; Yao, TD (Yao, Tandong)1,4
Source PublicationINTERNATIONAL JOURNAL OF CLIMATOLOGY
2018-11-15
Volume38Issue:13Pages:4938-4949
DOI10.1002/joc.5708
Abstract

Circulation-type classifications (CTCs) are useful tools for systematically describing atmospheric circulation and studying its variation and impact on surface climate. However, few circulation classification methods (CCMs) have been applied in the Tibetan Plateau (TP). In this study, six frequently used CCMs using 500hPa geopotential height data were assessed with respect to their abilities in explaining observed daily mean temperature and precipitation variations in the central and eastern TP for the period 1980-2014. Two statistical measures, the explained variance and the Kolmogorov-Smirnov test, were used to quantify the performance of the CTCs in describing climate variable variations. SAN (simulated annealing and diversified randomization clustering) and KRZ (Kruizinga's eigenvector-based scheme) were identified as optimum CCMs for synoptic typing over the study region. The daily mean temperatures are well conditioned on SAN-CTC with 43.9-62.4% explained variance at annual scale and 11.1-25.2% at seasonal scale. For daily precipitation variations, the explained variance at the annual scale is less than 40%. The spatial characters of climate variation affected by large-scale circulation are identified. Daily mean temperature variations in the Qaidam Basin and the Qilian Mountains (90 degrees-103 degrees E and 35 degrees-40 degrees N) all year round and in the region between the Tanggula Mountains and the Himalayan Mountains (88 degrees-97 degrees E and 30 degrees-34 degrees N) in wet season (May-September) are well resolved by the CTCs. Daily precipitation variations in the eastern TP in the dry season (October-April) and a region from the Brahmaputra River basin to the Tanggula Mountains (85 degrees-92 degrees E and 28 degrees-32 degrees N) and the southern Hengduan Mountains (98 degrees-102 degrees E and 27 degrees-31 degrees N) in the wet season show a close relationship with the identified CTCs by SAN.

Subject Area地理学
WOS IDWOS:000450222100018
Language英语
Indexed BySCIE
KeywordAtmospheric Circulation Climate Variability Europe Patterns Events
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
Cooperation Status国际
ISSN0899-8418
Department环境变化与地表过程重点实验室
PublisherWILEY
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8502
Collection图书馆
Corresponding AuthorZhang, XW (Zhang, Xiaowen)
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;
2.Univ Chinese Acad Sci, Beijing, Peoples R China;
3.Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, Gothenburg, Sweden;
4.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, XW ,Chen, DL ,Yao, TD . Evaluation of circulation-type classifications with respect to temperature and precipitation variations in the central and eastern Tibetan Plateau[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(13):4938-4949.
APA Zhang, XW ,Chen, DL ,&Yao, TD .(2018).Evaluation of circulation-type classifications with respect to temperature and precipitation variations in the central and eastern Tibetan Plateau.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(13),4938-4949.
MLA Zhang, XW ,et al."Evaluation of circulation-type classifications with respect to temperature and precipitation variations in the central and eastern Tibetan Plateau".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.13(2018):4938-4949.
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