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Turbulent flux observations and modelling over a shallow lake and a wet grassland in the Nam Co basin, Tibetan Plateau

Biermann, Tobias LU ; Babel, Wolfgang; Ma, Weiqiang; Chen, Xuelong; Thiem, Elisabeth; Ma, Yaoming and Foken, Thomas (2014) In Theoretical and Applied Climatology 116(1-2). p.301-316
Abstract
The Tibetan Plateau plays an important role in the global water cycle and is strongly influenced by climate change. While energy and matter fluxes have been more intensely studied over land surfaces, a large proportion of lakes have either been neglected or parameterised with simple bulk approaches. Therefore, turbulent fluxes were measured over wet grassland and a shallow lake with a single eddy-covariance complex at the shoreline in the Nam Co basin in summer 2009. Footprint analysis was used to split observations according to the underlying surface, and two sophisticated surface models were utilised to derive gap-free time series. Results were then compared with observations and simulations from a nearby eddy-covariance station over dry... (More)
The Tibetan Plateau plays an important role in the global water cycle and is strongly influenced by climate change. While energy and matter fluxes have been more intensely studied over land surfaces, a large proportion of lakes have either been neglected or parameterised with simple bulk approaches. Therefore, turbulent fluxes were measured over wet grassland and a shallow lake with a single eddy-covariance complex at the shoreline in the Nam Co basin in summer 2009. Footprint analysis was used to split observations according to the underlying surface, and two sophisticated surface models were utilised to derive gap-free time series. Results were then compared with observations and simulations from a nearby eddy-covariance station over dry grassland, yielding pronounced differences. Observations and footprint integrated simulations compared well, even for situations with flux contributions including grassland and lake. The accessibility problem for EC measurements on lakes can be overcome by combining standard meteorological measurements at the shoreline with model simulations, only requiring representative estimates of lake surface temperature. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
in
Theoretical and Applied Climatology
volume
116
issue
1-2
pages
301 - 316
publisher
Springer
external identifiers
  • scopus:84896396591
ISSN
1434-4483
DOI
10.1007/s00704-013-0953-6
language
English
LU publication?
yes
id
448ec847-dcf8-46d6-82ed-c6c1b14fa93d (old id 8518327)
date added to LUP
2016-01-12 12:29:18
date last changed
2017-10-22 03:04:20
@article{448ec847-dcf8-46d6-82ed-c6c1b14fa93d,
  abstract     = {The Tibetan Plateau plays an important role in the global water cycle and is strongly influenced by climate change. While energy and matter fluxes have been more intensely studied over land surfaces, a large proportion of lakes have either been neglected or parameterised with simple bulk approaches. Therefore, turbulent fluxes were measured over wet grassland and a shallow lake with a single eddy-covariance complex at the shoreline in the Nam Co basin in summer 2009. Footprint analysis was used to split observations according to the underlying surface, and two sophisticated surface models were utilised to derive gap-free time series. Results were then compared with observations and simulations from a nearby eddy-covariance station over dry grassland, yielding pronounced differences. Observations and footprint integrated simulations compared well, even for situations with flux contributions including grassland and lake. The accessibility problem for EC measurements on lakes can be overcome by combining standard meteorological measurements at the shoreline with model simulations, only requiring representative estimates of lake surface temperature.},
  author       = {Biermann, Tobias and Babel, Wolfgang and Ma, Weiqiang and Chen, Xuelong and Thiem, Elisabeth and Ma, Yaoming and Foken, Thomas},
  issn         = {1434-4483},
  language     = {eng},
  number       = {1-2},
  pages        = {301--316},
  publisher    = {Springer},
  series       = {Theoretical and Applied Climatology},
  title        = {Turbulent flux observations and modelling over a shallow lake and a wet grassland in the Nam Co basin, Tibetan Plateau},
  url          = {http://dx.doi.org/10.1007/s00704-013-0953-6},
  volume       = {116},
  year         = {2014},
}