title: Spatio-temporal characteristics of global warming in the Tibetan Plateau during the last 50 years based on a generalised temperature zone-elevation model.
abstract: Temperature is one of the primary factors influencing the climate and ecosystem, and examining its change and fluctuation could elucidate the formation of novel climate patterns and trends. In this study, we constructed a generalised temperature zone elevation model (GTEM) to assess the trends of climate change and temporal-spatial differences in the Tibetan Plateau (TP) using the annual and monthly mean temperatures from 1961-2010 at 144 meteorological stations in and near the TP. The results showed the following: (1) The TP has undergone robust warming over the study period, and the warming rate was 0.318°C/decade. The warming has accelerated during recent decades, especially in the last 20 years, and the warming has been most significant in the winter months, followed by the spring, autumn and summer seasons. (2) Spatially, the zones that became significantly smaller were the temperature zones of -6°C and -4°C, and these have decreased 499.44 and 454.26 thousand sq km from 1961 to 2010 at average rates of 25.1% and 11.7%, respectively, over every 5-year interval. These quickly shrinking zones were located in the northwestern and central TP. (3) The elevation dependency of climate warming existed in the TP during 1961-2010, but this tendency has gradually been weakening due to more rapid warming at lower elevations than in the middle and upper elevations of the TP during 1991-2010. The higher regions and some low altitude valleys of the TP were the most significantly warming regions under the same categorizing criteria. Experimental evidence shows that the GTEM is an effective method to analyse climate changes in high altitude mountainous regions.
authors.affiliation: Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan, PR China. weiyq@imde.ac.cn
authors.forename: Yanqiang
authors.initials: Y
authors.lastname: Wei
authors.forename: Yiping
authors.initials: Y
authors.lastname: Fang
mesh_terms: D000465:Algorithms; D000531:Altitude; D005843:Geography; D057232:Global Warming / Q000266:history; D049673:History, 20th Century; D049674:History, 21st Century; D008962:Models, Theoretical; D012621:Seasons; D062211:Spatio-Temporal Analysis; D013696:Temperature; D018609:Tibet
references.citation: Proc Natl Acad Sci U S A. 2009 Jul 7;106(27):11172-6
references.pmid: 19541649
references.citation: Trends Ecol Evol. 2009 Dec;24(12):694-701
references.pmid: 19695735
references.citation: Nature. 2011 Jan 27;469(7331):521-4
references.pmid: 21270891
references.citation: Science. 2007 Apr 13;316(5822):188-90
references.pmid: 17431148
references.citation: PLoS One. 2011;6(9):e25008
references.pmid: 21966397
references.citation: Proc Natl Acad Sci U S A. 2000 Feb 15;97(4):1351-4
references.pmid: 10677465
references.citation: Science. 1994 Apr 8;264(5156):243-5
references.pmid: 17749022
references.citation: Science. 2006 Jun 23;312(5781):1755-6
references.pmid: 16794068
references.citation: Science. 2007 Dec 21;318(5858):1846-7
references.pmid: 18096774
references.citation: Science. 2008 Oct 10;322(5899):258-61
references.pmid: 18845754