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Atmospheric Stability Above Lakes
- Source :
- Geophysical Research Letters. 44(17):8875-8883
-
Abstract
- Peer Reviewed Paper. An edited version of this paper was published by AGU. Copyright (2017) American Geophysical Union. Woolway, R. I., Verburg, P., Merchant, C. J., Lenters, J. D., Hamilton, D. P., Brookes, J., Kelly, S.,… Jones, I. D. (2017). Latitude and lake size are important predictors of over-lake atmospheric stability. Geophysical Research Letters, 44(17), 8875–8883. https://doi.org/10.1002/2017GL073941. To view the published open abstract, go to http://dx.doi.org and enter the DOI.<br />Turbulent fluxes across the air‐water interface are integral to determining lake heat budgets, evaporation, and carbon emissions from lakes. The stability of the atmospheric boundary layer (ABL) influences the exchange of turbulent energy. We explore the differences in over‐lake ABL stability using data from 39 globally distributed lakes. The frequency of unstable ABL conditions varied between lakes from 71 to 100% of the time, with average air temperatures typically several degrees below the average lake surface temperature. This difference increased with decreasing latitude, resulting in a more frequently unstable ABL and a more efficient energy transfer to and from the atmosphere, toward the tropics. In addition, during summer the frequency of unstable ABL conditions decreased with increasing lake surface area. The dependency of ABL stability on latitude and lake size has implications for heat loss and carbon fluxes from lakes, the hydrologic cycle, and climate change effects.
- Subjects :
- reservoir
cycle
layer
Geovetenskap och miljövetenskap
laurentian great-lakes
transfer velocity
sensitivity
diel variability
Quantitative Biology::Other
Physics::Geophysics
Computer Science::Graphics
water temperature
atmosphere
climate-change
surface-energy fluxes
Earth and Related Environmental Sciences
Hydrology
lake
Physics::Atmospheric and Oceanic Physics
Subjects
Details
- Language :
- English
- ISSN :
- 00948276
- Volume :
- 44
- Issue :
- 17
- Database :
- OpenAIRE
- Journal :
- Geophysical Research Letters
- Accession number :
- edsair.dedup.wf.001..8704e85b0858e7276362573c66016f8b
- Full Text :
- https://doi.org/10.1002/2017gl073941