• Non ci sono risultati.

Evaluation of energy balance closure correction methods for multiple eddy-covariance sites in different biomes

N/A
N/A
Info
Scarica
Protected

Academic year: 2021

Condividi "Evaluation of energy balance closure correction methods for multiple eddy-covariance sites in different biomes"

Copied!
1
0
0

Caricamento.... (Visualizza il testo completo ora)

Scarica adesso ( 1 pagine )

Testo completo

(1)

EGU2020-9319

EGU General Assembly 2020

© Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.

Evaluation of energy balance closure correction methods for

multiple eddy-covariance sites in different biomes

Matthias Mauder1 and the Energy-balance closure correction evaluation team*

1Karlsruhe Institute of Technology KIT/IMK-IFU, Institute for Meteorology and Climatology - Atmospheric Environmental

Research, Garmisch-Partenkirchen, Germany (matthias.mauder@kit.edu)

*A full list of authors appears at the end of the abstract

The apparent lack of surface energy balance closure is one of the most crucial challenges in the measurement of biosphere-atmosphere exchange. In principle, this issue can have a variety of potential reasons, including instrumental errors and errors introduced in the data processing chain. In addition, secondary circulations have been identified as one of the main reasons for a non-closure of the surface energy balance, since the related energy transport cannot be captured by common eddy-covariance tower flux measurements. When present, neglecting this process will result in an underestimation of turbulent fluxes. Secondary circulations can, however, be represented by means of large-eddy simulations, which have been employed to develop a novel semi-empirical model to correct for the missing large-scale flux (De Roo et al. 2018, DOI 10.1371/journal.pone.0209022). In this study, we compare the results of this process-based method with two other previously published bulk-correction methods (Mauder et al. 2013, DOI 10.1016/j.agrformet.2012.09.006; Charuchittipan et al. 2014, DOI 10.1007/s10546-014-9922-6). These three correction methods are applied for multiple sites in different biomes around the world. Independent data of energy fluxes from these sites are used to assess which of these methods leads to the most reliable results, and we discuss the limitations of these corrections methods with respect to meteorological conditions and site characteristics, such as measurement height, the landscape-scale heterogeneity and terrain complexity.

Energy-balance closure correction evaluation team: Matthias Mauder, David Johnson, Gerardo

Fratini, Daniel Berveiller, Aurore Brut, Pramit Kumar Deb Burman, Arnaud Carrara, Supriyo Chakraborty, Kuan-Yin Chen, Simon Drollinger, Milan Fischer, Anne Griebel, Atul K. Jain, Georg Jocher, Natascha Kljun, Anne Klosterhalfen, Natalia Kowalska, Hjalmar Laudon, Luca Belelli Marchesini, Ivan Mammarella, Daniel Metzen, Leonardo Montagnani, Sandhya K. Nair, Mats Nilsson, Asko Normets, Matej Orsag, Marian Pavelka, Matthias Peichl, Elise Pendall, Prajaya Prajapati, Debora Regina Roberti, Humberto Rocha, Eyal Rotenberg, Marko Stojanović, Paul Stoy, Efrat Schwartz, Will Woodgate, Dan Yakir

Riferimenti

Scarica adesso ( PDF - 1 pagine - 291.30 KB )

Documenti correlati

All these things are happening to decarbonize the electric energy production sector, which is the major net contributor to pollutants and CO

In PTES systems, the charge phase is usually performed by using a Heat Pump (HP), the energy conservation is entrusted to a Thermal Energy Storage (TES), which can be either

For recruitment, that through job sites is one of the most popular methods. They can have sites specifically for this purpose, and forums and job advertisements are also used.

13 Romania has consistently been reported as being the most prev- alent country of origin for potential victims of trafficking in the UK, with more than half of victims

Most of these defects have been supposed to be

By using a loss of function approach in Xenopus embryos I demonstrated in vivo, for the first time, the capacity of serotonin, via 5-HT2B receptor, to act as a

These results shed optimism on the expectance to get reliable data also from the other half of the samples

Concerning the sequencing quality, the 99.25% accuracy for SNPs called by both SEQ and HapMap datasets encountered for the first half of the data, confirm once again the

These methods can be applied in the computation of Bernoulli numbers

Further steps of G 3 – each nullifying 2/3 of the remaining non null diagonals – yield sparser and sparser ltT systems satisfied by Bernoulli numbers, and finally yield n

The most part of these compounds inhibit the protein through modulation of the N-terminal domain

In an attempt to discover new modulators of the C-terminal domain of Hsp90 and taking into account the structure of the first synthetic inhibitor of this domain, a

thus these graphs turn out to be a generalization of the double graphs

In this paper we study the graphs which are direct product of a simple graph G with the graphs obtained by the complete graph K k adding a loop to each vertex; thus these graphs

In fact, these represent the “internal justice” of the company

Of those concerning aspects of the substantive discipline, the need for the arbitration clause to be included in both the deed of incorporation and in the company charter