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Spatial and temporal variations in water temperature in a high-altitude deep dimictic mountain lake (Nam Co), central Tibetan Plateau
Wang, JB (Wang, Junbo)1,2; Huang, L (Huang, Lei)1; Ju, JT (Ju, Jianting)1; Daut, G (Daut, Gerhard)3; Wang, Y (Wang, Yong)1,4; Ma, QF (Ma, Qingfeng)1; Zhu, LP (Zhu, Liping)1,2; Haberzettl, T (Haberzettl, Torsten)3,5; Baade, J (Baade, Jussi)3; Mausbacher, R (Maeusbacher, Roland)3
Source PublicationJOURNAL OF GREAT LAKES RESEARCH
2019
Volume45Issue:2Pages:212-223
DOI10.1016/j.jglr.2018.12.005
Abstract

Water temperature and the related thermal structure and stratification of a lake are very important to lake ecosystems because of their significant effects on the vertical exchanges of dissolved and particulate matter. In this study, we present high resolution, seasonal variations in water temperature at different depths of a large deep lake on the central Tibetan Plateau. The results show that Nam Co is a typical dimictic lake whose thermal stratification begins and ends in early June and early November, respectively. Increases in the water temperature during spring and the establishment of thermal stratification in the eastern small sub-basin occur approximately one month prior to the main basin which is likely caused by the different morphometry, different water transparency during spring, and the possible presence of a spring thermal bar. The Schmidt stability of the water column is directly controlled by surface water temperature. During the ice-covered period, the homogeneous water temperature exhibits a continuous increasing trend from approximately 0.5 degrees C to 3.5 degrees C. The daily mean surface water temperature of the main open lake area is highly correlated to the air temperature but shows a hysteresis effect of approximately 38 days, which shows the significant heat storage in such a large deep lake. Nam Co is a typical lake in this area in terms of its altitude, water depth and climatic conditions, so our results have broader significance for limnological and paleolimnological studies of similar lakes on the Tibetan Plateau. (C) 2019 International Association for Great Lakes Research. Published by Elsevier B.V. All rights reserved.

Subject AreaEnvironmental Sciences
WOS IDWOS:000463464000002
Language英语
Indexed BySCI
KeywordLong-term Temperature Balance Observations Thermal Structure Air-temperature Climate-change Great-lakes Stratification Classification Variability Patterns
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology
WOS SubjectEnvironmental Sciences ; Limnology ; Marine & Freshwater Biology
Cooperation Status国际
ISSN0380-1330
Department环境变化与地表过程
URL查看原文
PublisherELSEVIER SCI LTD
SubtypeArticle
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Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9350
Collection图书馆
Corresponding AuthorWang, JB (Wang, Junbo)
Affiliation1.Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China;
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
3.Friedrich Schiller Univ Jena, Inst Geog, Phys Geog, Jena, Germany;
4.Anhui Normal Univ, Coll Terr Resources & Tourism, Wuhu, Anhui, Peoples R China;
5.Ernst Moritz Arndt Univ Greifswald, Inst Geog & Geol, Phys Geog, Greifswald, Germany.
Recommended Citation
GB/T 7714
Wang, JB ,Huang, L ,Ju, JT ,et al. Spatial and temporal variations in water temperature in a high-altitude deep dimictic mountain lake (Nam Co), central Tibetan Plateau[J]. JOURNAL OF GREAT LAKES RESEARCH,2019,45(2):212-223.
APA Wang, JB .,Huang, L .,Ju, JT .,Daut, G .,Wang, Y .,...&Mausbacher, R .(2019).Spatial and temporal variations in water temperature in a high-altitude deep dimictic mountain lake (Nam Co), central Tibetan Plateau.JOURNAL OF GREAT LAKES RESEARCH,45(2),212-223.
MLA Wang, JB ,et al."Spatial and temporal variations in water temperature in a high-altitude deep dimictic mountain lake (Nam Co), central Tibetan Plateau".JOURNAL OF GREAT LAKES RESEARCH 45.2(2019):212-223.
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