Improvement of CO2 eddy fluxes modelling in topographically complex terrain

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F12%3A00376921" target="_blank" >RIV/67179843:_____/12:00376921 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Improvement of CO2 eddy fluxes modelling in topographically complex terrain
Original language description
Annual sums of net ecosystem exchange (NEE) estimated by eddy covariance method (EC) are often used for comparisons among sites. But application of EC in topographically complex terrain restrains application of standard methods for their estimation. Analysis of friction air velocity response of night-time CO2 fluxes and estimation of mean daily ecosystem respiration from daytime NEE showed that night-time data and fluxes measured early after sunrise or late before sunset are not sufficiently reliable for computation of accurate annual sums of NEE. Therefore presented method takes into account auxiliary soil chamber measurements and applies correction factor in ecosystem respiration model calibrated to biomass inventory results. Also automated algorithmfor computation of light response curve parameters in constrained range was established. This method produced accurate annual sums of NEE that were only 7.2% 5.2 higher than values determined by biomass inventory method.
Czech name
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Czech description
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Project
<a href="/en/project/EE2.4.31.0056" target="_blank" >EE2.4.31.0056: Partnership in Climate Research and Adaptation Strategies</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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