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DOI | 10.1029/2017JD027751 |
Lake-Atmosphere Heat Flux Dynamics of a Thermokarst Lake in Arctic Siberia | |
Franz, D.1; Mammarella, I.2; Boike, J.3,4; Kirillin, G.5; Vesala, T.2,6; Bornemann, N.3; Larmanou, E.1,7; Langer, M.3,4; Sachs, T.1,8 | |
2018-05-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:10页码:5222-5239 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Finland; Sweden |
英文摘要 | We conducted eddy covariance measurements from April to August 2014 on a Siberian thermokarst lake. The study site is located in the Lena River Delta and characterized as a floating ice lake. Heat fluxes differed in magnitudes, directions and temporal patterns depending on the lake surface conditions (frozen ice cover, ice cover melt, and open water). Significant heat release during frozen ice cover conditions highlighted the importance of lakes for the landscape heat budget and water balance. The energy balance was nearly closed during the open water period and highlighted the impact of melting energy on its closure during the ice cover period. Sensible and latent heat dynamics were driven by temperature and water vapor gradients scaled by wind speed, respectively. We calculated bulk aerodynamics transfer coefficients and evaluated the performance of the derived in situ and three independent heat flux parameterization schemes. We found that bulk transfer models perform moderately to poorly for the different lake surface conditions. During the open water period small-scale temporal variability could not be represented by the models, particularly in case of latent heat flux. The model results were less sensitive to the specific model type than to the accuracy of the surface water temperature measurement, which is dependent on a well-thought-out measurement design. Our study stresses considerations that are crucial for similar campaigns in the future, in order to face the measurement challenges encountered on arctic lakes especially during the ice cover period. |
英文关键词 | Arctic Lake heat flux evaporation eddy covariance energy balance bulk transfer model |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435445600027 |
WOS关键词 | EDDY-COVARIANCE MEASUREMENTS ; ENERGY-BALANCE CLOSURE ; LENA RIVER DELTA ; SURFACE-ENERGY ; CLIMATE-CHANGE ; PERMAFROST CARBON ; NORTHERN SIBERIA ; ICE THICKNESS ; SEA-ICE ; WATER |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/32590 |
专题 | 气候变化 |
作者单位 | 1.GFZ German Res Ctr Geosci, Potsdam, Germany; 2.Univ Helsinki, Inst Atmosphere & Earth Syst Res Phys, Fac Sci, Helsinki, Finland; 3.Alfred Wegener Inst Polar & Marine Res AWI, Potsdam, Germany; 4.Humboldt Univ, Dept Geog, Berlin, Germany; 5.Leibniz Inst Freshwater Ecol & Inland Fisheries I, Dept Ecohydrol, Berlin, Germany; 6.Univ Helsinki, Inst Atmosphere & Earth Syst Res Forest Sci, Fac Agr & Forestry, Helsinki, Finland; 7.Swedish Univ Agr Sci, Dept Forest Ecol & Management, Umea, Sweden; 8.TU Braunschweig, Inst Flight Guidance, Braunschweig, Germany |
推荐引用方式 GB/T 7714 | Franz, D.,Mammarella, I.,Boike, J.,et al. Lake-Atmosphere Heat Flux Dynamics of a Thermokarst Lake in Arctic Siberia[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(10):5222-5239. |
APA | Franz, D..,Mammarella, I..,Boike, J..,Kirillin, G..,Vesala, T..,...&Sachs, T..(2018).Lake-Atmosphere Heat Flux Dynamics of a Thermokarst Lake in Arctic Siberia.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(10),5222-5239. |
MLA | Franz, D.,et al."Lake-Atmosphere Heat Flux Dynamics of a Thermokarst Lake in Arctic Siberia".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.10(2018):5222-5239. |
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