Home | About Journal | Editorial | Instruction | Subsciption | Messages | Contact Us | 中文
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY 1996, Vol. 18 Issue (1) :10-19    DOI:
Current Issue | Next Issue | Archive | Adv Search << | >>
Energy Budget at ELA on Dongkemadi Glacier in the Tonggula Mts. Tibetan Plateau
Zhang Yinsheng1, Yao Tandong1, Pu Jianchen1, T Ohata2, H Yabuki2, K Fujita2
1. Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Siences, 730000;
2. Institute for Hydrospheric_Atmospheric Siences of Nagoya University, Nagoya 464, Japan
Download: PDF (KB)   HTML (KB)   Export: BibTeX or EndNote (RIS)      Supporting Info
Abstract Dongkemadi Glacier is located in the middle of Tanggula Mts., Tibetan Plateau, 33°02’ N, 90°02’ E, where the equilibrium line altitude is near 5600 m a.s.l.. The solar radiation budget and energy balance were anlysed based on a long time series observation in an automatic station setted on the ELA of the glacier. At the observing point, the annaul mean air temperature is -9.8℃, the annual mean air vapour pressure is 2.6 hpa, and the annual wind speed is 4.3 m/s. The annual amount of global radiation that reach on the surface of the glacier is about 7300 MJ/m2, but only 1/4 of that is absorbed by the glacier. The net radiation is positive from April to October but negative for the rest. The latent heat flux has an opsite direction seasonal variation with net radiation. The sensible heat flux is poxitive for all seasons so that it is an important energy source for the glacier surface. The melting heat occurs from May to September but has less contribution to heat balance comparing with latent heat. The conductive heat flux is few in energy budget on the glacier surface. Both the energy exchanging level and the energy exchanging coefficient are large in summer and winter. There is a good relationship between the air temperature above the glacier and net radiation. The sensitivity coefficient of air temperature above the glacier to variation of global radiation is related well with albedo and absorbed radiation.
Service
Email this article
Add to my bookshelf
Add to citation manager
Email Alert
RSS
Articles by authors
Zhang Yinsheng
Yao Tandong
Pu Jianchen
T Ohata
H Yabuki
K Fujita
KeywordsDongkemadi Glacier   radiation budget   energy exchange     
Abstract: Dongkemadi Glacier is located in the middle of Tanggula Mts., Tibetan Plateau, 33°02’ N, 90°02’ E, where the equilibrium line altitude is near 5600 m a.s.l.. The solar radiation budget and energy balance were anlysed based on a long time series observation in an automatic station setted on the ELA of the glacier. At the observing point, the annaul mean air temperature is -9.8℃, the annual mean air vapour pressure is 2.6 hpa, and the annual wind speed is 4.3 m/s. The annual amount of global radiation that reach on the surface of the glacier is about 7300 MJ/m2, but only 1/4 of that is absorbed by the glacier. The net radiation is positive from April to October but negative for the rest. The latent heat flux has an opsite direction seasonal variation with net radiation. The sensible heat flux is poxitive for all seasons so that it is an important energy source for the glacier surface. The melting heat occurs from May to September but has less contribution to heat balance comparing with latent heat. The conductive heat flux is few in energy budget on the glacier surface. Both the energy exchanging level and the energy exchanging coefficient are large in summer and winter. There is a good relationship between the air temperature above the glacier and net radiation. The sensitivity coefficient of air temperature above the glacier to variation of global radiation is related well with albedo and absorbed radiation.
KeywordsDongkemadi Glacier,   radiation budget,   energy exchange     
Received: 1995-04-18;
Cite this article:   
Zhang Yinsheng, Yao Tandong, Pu Jianchen etc .Energy Budget at ELA on Dongkemadi Glacier in the Tonggula Mts. Tibetan Plateau[J]  JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 1996,V18(1): 10-19
URL:  
http://210.72.80.159/jweb_bcdt/EN/     或     http://210.72.80.159/jweb_bcdt/EN/Y1996/V18/I1/10
 
[1] 王绍令.1989.晚更新世以来青藏高原冻土形成及演化的探讨.冰川冻土,11(1):67~75.
[2] 王宁练,张祥松.1992.近百年来山地冰川波动与气候变化.冰川冻土,14(3):244~150.
[3] 王绍令.1993.近数十年来青藏公路沿线多年冻土变化.干旱区地理,16(1):1~8.
[4] 李培基.1989.近百年来气候变化.冰川冻土,11(3):193~201. 浏览
[5] 赵秀锋,郭东信,黄以职等.1993.晚更新世以来昆仑山区黄土沉积及其气候记录.冰川冻土,15(1):63~69. 浏览
[6] 朱林楠,吴紫汪,刘永智.1995.青藏高原东部的冻土退化.冰川冻土,17(2):120~124. 浏览
[7] Greuell W. 1985. Glacier and climate, D. R. publishing compang, Nethland, 142~145.
没有找到本文相关文献
Copyright 2010 by JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY