Göckede, M; Foken, T; Aubinet, M; Aurela, M; Banza, J; Bernhofer, C; Bonnefond, J-M; Brunet, Y; Carrara, A; Clement, R; Dellwik, E; Elbers, JA; Eugster, W; Fuhrer, J; Granier, A; Grünwald, T; Heinesch, B; Janssens, IA; Knohl, A; Koeble, R; Laurila, T; Longdoz, B; Manca, G; Marek, M; Markkanen, T; Mateus, J; Matteucci, G; Mauder, M; Migliavacca, M; Minerbi, S; Moncrieff, JB; Montagnani, L; Moors, E; Ourcival, J-M; Papale, D; Pereira, J; Pilegaard, K; Pita, G; Rambal, S; Rebmann, C; Rodrigues, A; Rotenberg, E; Sanz, MJ; Sedlak, P; Seufert, G; Siebicke, L; Soussana, JF; Valentini, R; Vesala, T; Verbeeck, H; Yakir, D: Quality control of CarboEurope flux data – Part 1: Coupling footprint analyses with flux data quality assessment to evaluate sites in forest ecosystems, Biogeosciences, 5, 433-450 ("CarboEurope-IP Best Paper Award 2008") (2008) [Link] | |
Stichworte: QA/QC,footprint,CarboEuroflux | |
Abstract: We applied a site evaluation approach combining Lagrangian Stochastic footprint modeling with a quality assessment approach for eddy-covariance data to 25 forested sites of the CarboEurope-IP network. The analysis addresses the spatial representativeness of the flux measurements, instrumental effects on data quality, spatial patterns in the data quality, and the performance of the coordinate rotation method. Our findings demonstrate that application of a footprint filter could strengthen the CarboEurope-IP flux database, since only one third of the sites is situated in truly homogeneous terrain. Almost half of the sites experience a significant reduction in eddy-covariance data quality under certain conditions, though these effects are mostly constricted to a small portion of the dataset. Reductions in data quality of the sensible heat flux are mostly induced by characteristics of the surrounding terrain, while the latent heat flux is subject to instrumentation-related problems. The Planar-Fit coordinate rotation proved to be a reliable tool for the majority of the sites using only a single set of rotation angles. Overall, we found a high average data quality for the CarboEurope-IP network, with good representativeness of the measurement data for the specified target land cover types. |
Fr. 01.07.2022 3. Bayerische Biodiversitätstage in Bayern 2022 |
BayCEER-Kolloquium: |
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Do. 30.06.2022 Postponed to WS 22/23: Plant diversity in a changing world: from individuals to communities |
Ökologisch-Botanischer Garten: |
Mi. 29.06.2022 Führung | "Klimawandel: Neue Bäume braucht die Stadt" |
So. 03.07.2022 Führung | "Mäusedorn und Katzenschwanz: Katzen und Botanik" |
So. 03.07.2022 Ausstellungseröffnung | "Natur und Kunst" - Malerei und Graphik von Christel Gollner |