Analysis of surface energy and mass balance in the accumulation zone of Qiyi Glacier, Tibetan Plateau in an ablation season
Analysis of surface energy and mass balance in the accumulation zone of Qiyi Glacier, Tibetan Plateau in an ablation season
复制标题
青藏高原七一冰川消融季积聚区地表能量与质量平衡分析
DOI：
10.1007/s12665-016-5591-8
复制
发表时间：
2016-04
影响因子：
2.8
通讯作者：
Wang Ninglian
中科院分区：
文献类型：
--
作者：
Wu Xuejiao;He Jianqiao;Jiang Xi;Wang Ninglian
以往对青藏高原冰川的研究主要集中在消融带，而对冰川堆积带的地表能量平衡研究较少。为了更好地了解高海拔大陆冰川堆积带的冰川融化过程，利用基于物理的能量平衡模型，对2011年7月30日至10月9日青藏高原北方边缘七一冰川的地表能量收支和物质平衡特征进行了研究。通过比较计算的和观察到的质量变化，该模型进行了验证。结果表明，模拟的累积质量平衡为−60.5 mm w. e。测量值为-69.6 mm w.e.。8月累积质量平衡模型与实测值比较吻合（r= 0.98，p < 0.001），9月受降水影响较差（r= 0.73，p < 0.01）。因此，需要改进降水观测。在8月，最大的融化，净辐射，Rn，是SEB的主要成分，占总的表面能量热通量（67%），其次是湍流感热通量（13%），潜热通量（9%）和传导热通量（11%）。9月份Rn的贡献急剧下降（15%），感热通量占地表能量平衡的40%。在整个观测期间，Rn只占总热通量的51%.在研究的夏季期间，在积累区发现了强烈的升华，在几天的正潜热通量进一步说明，冰川偶尔会受到季风活动的影响。
Previous work on glaciers in the Tibetan Plateau has focused mainly on the ablation zone, while only a modest amount of work has been done on surface energy balance in the accumulation zone on glaciers. To better understand glacial melting in the accumulation zone of high-altitude continental glaciers, a physically based energy-balance model was used to investigate characteristics of the surface energy budget and mass balance on Qiyi Glacier, at the northern margin of the Tibetan Plateau, from 30 July to 9 October 2011. The model was validated by comparing the computed and observed mass variation. The result shows that modeled cumulative mass balance was −60.5 mm w.e. and the measured one was −69.6 mm w.e. The modeled and measured accumulated mass balances compared well in August (r= 0.98,p< 0.001), but less so in September due to the influence of precipitation (r= 0.73,p< 0.01). Improved precipitation observation will therefore be needed. In August, the month of greatest melting, net radiation,Rn, was the primary component of the SEB, dominating the total surface energy heat fluxes (67 %), followed by turbulent sensible heat flux (13 %), latent heat flux (9 %) and conductive heat flux (11%). However, in September, the contribution ofRnsharply decreased (15 %), and sensible heat flux (40 %) was the primary component of the surface energy balance. Over the observation period,Rnaccounted for only 51 % of the total heat flux. Strong sublimation was found in the accumulation zone during the study summer period, and positive latent heat flux during several days further illustrates that the glacier is occasionally influenced by monsoon activity.
登录
查看更多内容
影响因子：
3.4
作者：
R. Giesen;L. Andreassen;J. Oerlemans;M. R. van den Broeke
通讯作者：
R. Giesen;L. Andreassen;J. Oerlemans;M. R. van den Broeke
DOI：
10.5194/tc-6-467-2012
发表时间：
2012-04
期刊：
The Cryosphere
影响因子：
--
作者：
T. Heid;A. Kääb
通讯作者：
T. Heid;A. Kääb
2009年夏季中国西祁连山老虎沟12号冰川积聚区地表能量收支
影响因子：
2
作者：
Sun, Weijun;Qin, Xiang;Ren, Jiawen;Yang, Xingguo;Zhang, Tong;Liu, Yushuo;Cui, Xiaoqing;Du, Wentao
通讯作者：
Du, Wentao
影响因子：
3.4
作者：
I. Brown;M. Kirkbride;R. Vaughan
通讯作者：
I. Brown;M. Kirkbride;R. Vaughan
分布式表面能量和质量平衡模型及其在中国山地冰川中的应用
影响因子：
--
作者：
Jiang Xi;Wang NingLian;Song Gaoju
通讯作者：
Song Gaoju