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DOI | 10.5194/acp-18-15087-2018 |
The monsoon effect on energy and carbon exchange processes over a highland lake in the southwest of China | |
Du, Qun1; Liu, Huizhi1,2; Xu, Lujun1; Liu, Yang1,2; Wang, Lei1 | |
2018-10-19 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:20页码:15087-15104 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Erhai Lake is a subtropical highland shallow lake on the southeast margin of the Tibetan Plateau, which is influenced by both South Asian and East Asian summer monsoons. Based on 4 years of continuous eddy covariance (EC) data over Erhai Lake, the monsoon effect on water- atmosphere exchange processes is investigated by comparing the energy and CO2 flux patterns and their main drivers during pre-monsoon (March-April), monsoon (May-October) and post-monsoon (November-December) periods. The results show that the atmospheric properties display a large difference during the three different periods. There is a negative difference between water surface and air temperature (T) during the pre-monsoon period, while a positive T during the post-monsoon period. The diurnal sensible heat flux (H-S) is larger during the post-monsoon period, while the latent heat flux (LE) is larger during the monsoon period. The monthly average H-S and heat storage (Q) in the lake remain negative during the pre-monsoon period and the early monsoon period, and they become positive in the middle monsoon period, which indicates that the lake absorbs heat at first and releases it subsequently. LE plays a dominating role in the energy partitioning of the lake. The Bowen ratio is higher during the post-monsoon period. The uptake of CO2 flux is observed in the middle of the day during monsoon and post-monsoon periods. The Delta T is the main driver for H-S and the effect of Delta T is increased as timescales are extended from half-hourly to monthly. The wind speed has a weak effect on H-S but a strong effect on LE and CO2 fluxes Similar main drivers for H-S are found during the pre-monsoon and post-monsoon periods, which is also found for CO2 flux, indicating a large impact of the monsoon on the heat and carbon exchange processes over Erhai Lake. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447779800005 |
WOS关键词 | EDDY COVARIANCE MEASUREMENTS ; SOUTHERN INLAND WATER ; ASIAN SUMMER MONSOON ; INTERANNUAL VARIABILITY ; NORTHERN WISCONSIN ; FLOATING CHAMBER ; HEAT FLUXES ; BOREAL LAKE ; EVAPORATION ; BALANCE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19500 |
专题 | 地球科学 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Du, Qun,Liu, Huizhi,Xu, Lujun,et al. The monsoon effect on energy and carbon exchange processes over a highland lake in the southwest of China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(20):15087-15104. |
APA | Du, Qun,Liu, Huizhi,Xu, Lujun,Liu, Yang,&Wang, Lei.(2018).The monsoon effect on energy and carbon exchange processes over a highland lake in the southwest of China.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(20),15087-15104. |
MLA | Du, Qun,et al."The monsoon effect on energy and carbon exchange processes over a highland lake in the southwest of China".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.20(2018):15087-15104. |
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