DOI: 10.1002/joc.5708
论文题名: Evaluation of circulation-type classifications with respect to temperature and precipitation variations in the central and eastern Tibetan Plateau
作者: Zhang X. ; Chen D. ; Yao T.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 13 起始页码: 4938
结束页码: 4949
语种: 英语
英文关键词: circulation classification
; COST733
; precipitation
; synoptic climatology
; temperature
; Tibetan Plateau
Scopus关键词: Automata theory
; Climatology
; Landforms
; Precipitation (chemical)
; Simulated annealing
; Temperature
; Atmospheric circulation
; Circulation type classifications
; COST733
; Eastern Tibetan plateau
; Large-scale circulation
; Precipitation variation
; Synoptic climatology
; Tibetan Plateau
; Temperature control
; air temperature
; atmospheric circulation
; climate classification
; eigenvalue
; performance assessment
; precipitation (climatology)
; quantitative analysis
; simulated annealing
; synoptic meteorology
; China
; Hengduan Mountains
; Himalayas
; Qaidam Basin
; Qilian Mountains
; Qinghai
; Qinghai-Xizang Plateau
; Tanggula Mountains
; Xizang
英文摘要: 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 500 hPa 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°–103°E and 35°–40°N) all year round and in the region between the Tanggula Mountains and the Himalayan Mountains (88°–97°E and 30°–34°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°–92°E and 28°–32°N) and the southern Hengduan Mountains (98°–102°E and 27°–31°N) in the wet season show a close relationship with the identified CTCs by SAN. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116758
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Zhang X.,Chen D.,Yao T.. Evaluation of circulation-type classifications with respect to temperature and precipitation variations in the central and eastern Tibetan Plateau[J]. International Journal of Climatology,2018-01-01,38(13)