Quantifying Surface Energy Fluxes and Evaporation over a Significant Expanding Endorheic Lake in the Central Tibetan Plateau

Journal of the Meteorological Society of Japan. Ser. II

Ning MA¹  Yinsheng ZHANG¹  Haifeng GAO¹  Hongtao SONG¹  Yanhong GUO¹ 

[1] Key Laboratory of Tibetan Plateau Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, China

关键词: energy fluxes;    eddy covariance method;    lake evaporation;    pan evaporation;    Tibetan Plateau;   

DOI  :  10.2151/jmsj.2016-023

学科分类：大气科学

来源: Meteorological Society of Japan

【 摘 要 】

 In this study, energy and water vapor exchange between the lake and atmosphere over the largest lake in Tibet, Lake Serling Co, was measured by an eddy covariance system from April 26 until September 26, 2014. The results demonstrated that the diurnal variations of the sensible heat flux (H) and latent heat flux (LE) were different from that of the net radiation (Rn). Rn reached its peak value at the local noon, whereas H peaked in the morning and LE peaked in the afternoon. On a seasonal scale, H and LE were also different from Rn. The maximum value of Rn occurred in June, while the maxima of H and LE were observed in September. Lake evaporation was quantified with a daily mean value of 2.7 mm d-1 and a total amount of 417.0 mm during the study period. In addition, evaporation from Lake Serling Co was compared with two types of pan evaporation (D20 pan and E601B pan) and potential evaporation on the land surface. The variability of conversion coefficients between lake evaporation, D20/E601B pan and potential evaporation indicate that coefficients varied depending on the month and could not be defined as a single experimental value.

【 授权许可】

Unknown