Show simple item record

dc.contributor.author
Guseva, Sofya
dc.contributor.author
Bleninger, Tobias
dc.contributor.author
Jöhnk, Klaus
dc.contributor.author
Polli, Bruna Arcie
dc.contributor.author
Tan, Zeli
dc.contributor.author
Thiery, Wim
dc.contributor.author
Zhuang, Qianlai
dc.contributor.author
Rusak, James Anthony
dc.contributor.author
Yao, Huaxia
dc.contributor.author
Lorke, Andreas
dc.contributor.author
Stepanenko, Victor
dc.date.accessioned
2020-03-11T11:19:09Z
dc.date.available
2020-03-11T03:11:56Z
dc.date.available
2020-03-11T11:19:09Z
dc.date.issued
2020
dc.identifier.issn
1027-5606
dc.identifier.issn
1607-7938
dc.identifier.other
10.5194/hess-24-697-2020
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/404246
dc.identifier.doi
10.3929/ethz-b-000404246
dc.description.abstract
In recent decades, several lake models of varying complexity have been developed and incorporated into numerical weather prediction systems and climate models. To foster enhanced forecasting ability and verification, improvement of these lake models remains essential. This especially applies to the limited simulation capabilities of biogeochemical processes in lakes and greenhouse gas exchanges with the atmosphere. Here we present multi-model simulations of physical variables and dissolved gas dynamics in a temperate lake (Harp Lake, Canada). The five models (ALBM, FLake, LAKE, LAKEoneD, MTCR-1) considered within this most recent round of the Lake Model Intercomparison Project (LakeMIP) all captured the seasonal temperature variability well. In contrast, none of the models is able to reproduce the exact dates of ice cover and ice off, leading to considerable errors in the simulation of eddy diffusivity around those dates. We then conducted an additional modeling experiment with a diffusing passive tracer to isolate the effect of the eddy diffusivity on gas concentration. Remarkably, sophisticated k−ε models do not demonstrate a significant difference in the vertical diffusion of a passive tracer compared to models with much simpler turbulence closures. All the models simulate less intensive spring overturn compared to autumn. Reduced mixing in the models consequently leads to the accumulation of the passive tracer distribution in the water column. The lake models with a comprehensive biogeochemical module, such as the ALBM and LAKE, predict dissolved oxygen dynamics adequate to the observed data. However, for the surface carbon dioxide concentration the correlation between modeled (ALBM, LAKE) and observed data is weak (∼0.3). Overall our results indicate the need to improve the representation of physical and biogeochemical processes in lake models, thereby contributing to enhanced weather prediction and climate projection capabilities.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Multimodel simulation of vertical gas transfer in a temperate lake
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2020-02-17
ethz.journal.title
Hydrology and Earth System Sciences
ethz.journal.volume
24
en_US
ethz.journal.issue
2
en_US
ethz.journal.abbreviated
Hydrol. earth syst. sci.
ethz.pages.start
697
en_US
ethz.pages.end
715
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-03-11T03:12:09Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-03-11T11:19:21Z
ethz.rosetta.lastUpdated
2021-02-15T08:42:10Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Multimodel%20simulation%20of%20vertical%20gas%20transfer%20in%20a%20temperate%20lake&rft.jtitle=Hydrology%20and%20Earth%20System%20Sciences&rft.date=2020&rft.volume=24&rft.issue=2&rft.spage=697&rft.epage=715&rft.issn=1027-5606&1607-7938&rft.au=Guseva,%20Sofya&Bleninger,%20Tobias&J%C3%B6hnk,%20Klaus&Polli,%20Bruna%20Arcie&Tan,%20Zeli&rft.genre=article&rft_id=info:doi/10.5194/hess-24-697-2020&
 Search print copy at ETH Library

Files in this item

Thumbnail

Publication type

Show simple item record