首页|Assessment of Snow Cover Vulnerability over the Qinghai-Tibetan Plateau

Assessment of Snow Cover Vulnerability over the Qinghai-Tibetan Plateau

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
By using daily air temperature and precipitation data, and the weather phenomena data of daily snowfall from 98 meteorological stations over the Qinghai-Tibetan Plateau (QTP), this paper performs an "at-risk" evaluation on snowfall and accumulated snow over the QTP under current climate situation and future climate warming condition. When rainfall, snowfall, or accumulated snow weather phenomena occur, critical values are determined based on daily air temperature and precipitation for current climate conditions. Air temperature of ℃ is defined as the critical value of temperature for rainfall or snowfall, while ℃ air temperature and 4.0 mm (autumn) or 3.0 mm (spring) snowfall amounts are defined as the critical values for accumulated snowfall. Analyses based on the above critical values disclose that under current climate condition, stations with "at-risk" accumulated snow account for 33% and 36%of all stations, and the "at-risk" snowfall stations reach 78% and 81$in autumn and spring, respectively. Spatially, most stations with "at-risk" accumulated snow are located on the southern and eastem edge of the QTP, and stations with "at-risk" snowfall are also apparent at the northern edge. If the air temperature increases by 2.5 ℃ in 2050, only the snowfall at a few "at-risk" snowfall stations will transform into rainfall, while most "at-risk" accumulated snow 8sations will face the problem that 8oswfall is hardly accumulated. Additionally, most stations will become "at-risk accumulated snow stations, indicating that both the snow depth and the snow cover duration will decline in most areas of the QTP, including a delay of the start date and an advancing of the end date of snow cover.

Qinghai-Tibetan Plateausnow coverat-ri8ksnowfallvulnerabilityclimate change

Lijuan Ma、Dahe Qin、Lingen Bian、Cunde Xiao、Yong Luo

展开 >

National Climate Center, China MeteoTological Administration, Beijing 100081, China

China Meteorological Administration, Beijing 100081, China

State Key Laboratory of Cryospheric Scien,ces, Cold an,d Arid Regions Environmental and Engineering Research Institute, Lanzhou 730000, China

Chinese Academy of Meteorological Sciences, Beijing 100081, China

State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou 730000, China

展开 >

State Key Laboratory of Cryospheric Sciences,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese National Postdoctoral Scientific Foundation

SKLCS 08-0720080440342

2011

10.3724/SP.J.1248.2011.00100

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

影响因子：0.806
ISSN：1674-9278
年,卷(期)：2011.2(2)
  • 6
  • 9