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Akademický článek

The land–atmosphere feedback observatory: a new observational approach for characterizing land–atmosphere feedback

Autor: F. Späth, V. Rajtschan, T. K. D. Weber, S. Morandage, D. Lange, S. S. Abbas, A. Behrendt, J. Ingwersen, T. Streck, V. Wulfmeyer

Publikováno v: Geoscientific Instrumentation, Methods and Data Systems, Vol 12, Pp 25-44 (2023)

Important topics in land–atmosphere (L–A) feedback research are water and energy balances and heterogeneities of fluxes at the land surface and in the atmospheric boundary layer (ABL). To target these questions, the Land–Atmosphere Feedback Obs

Externí odkaz: https://doaj.org/article/1b30a960a61c4ecbaa300c1e423a5c8a

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Akademický článek

A Bayesian sequential updating approach to predict phenology of silage maize

Autor: M. Viswanathan, T. K. D. Weber, S. Gayler, J. Mai, T. Streck

Publikováno v: Biogeosciences, Vol 19, Pp 2187-2209 (2022)

Crop models are tools used for predicting year-to-year crop development on field to regional scales. However, robust predictions are hampered by uncertainty in crop model parameters and in the data used for calibration. Bayesian calibration allows fo

Externí odkaz: https://doaj.org/article/75885114b7f2457e9d31709e6b8d28cd

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Akademický článek

Multi-site, multi-crop measurements in the soil–vegetation–atmosphere continuum: a comprehensive dataset from two climatically contrasting regions in southwestern Germany for the period 2009–2018

Publikováno v: Earth System Science Data, Vol 14, Pp 1153-1181 (2022)

We present a comprehensive, high-quality dataset characterizing soil–vegetation and land surface processes from continuous measurements conducted in two climatically contrasting study regions in southwestern Germany: the warmer and drier Kraichgau

Externí odkaz: https://doaj.org/article/d1663ada44c24c32a2eee10500b34062

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Akademický článek

Distinguishing between early- and late-covering crops in the land surface model Noah-MP: impact on simulated surface energy fluxes and temperature

Autor: K. Bohm, J. Ingwersen, J. Milovac, T. Streck

Publikováno v: Biogeosciences, Vol 17, Pp 2791-2805 (2020)

Land surface models are essential parts of climate and weather models. The widely used Noah-MP land surface model requires information on the leaf area index (LAI) and green vegetation fraction (GVF) as key inputs of its evapotranspiration scheme. Th

Externí odkaz: https://doaj.org/article/f76b7f2aa30f46a4876c00229598385a

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Akademický článek

Evaluating multi-year, multi-site data on the energy balance closure of eddy-covariance flux measurements at cropland sites in southwestern Germany

Autor: R. Eshonkulov, A. Poyda, J. Ingwersen, H.-D. Wizemann, T. K. D. Weber, P. Kremer, P. Högy, A. Pulatov, T. Streck

Publikováno v: Biogeosciences, Vol 16, Pp 521-540 (2019)

The energy balance of eddy-covariance (EC) measurements is typically not closed, resulting in one of the main challenges in evaluating and interpreting EC flux data. Energy balance closure (EBC) is crucial for validating and improving regional and gl

Externí odkaz: https://doaj.org/article/0e5242c75da34de49609b862056080d0

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Akademický článek

The role of Phragmites in the CH4 and CO2 fluxes in a minerotrophic peatland in southwest Germany

Autor: M. van den Berg, J. Ingwersen, M. Lamers, T. Streck

Publikováno v: Biogeosciences, Vol 13, Iss 21, Pp 6107-6119 (2016)

Peatlands are interesting as a carbon storage option, but are also natural emitters of the greenhouse gas methane (CH4). Phragmites peatlands are particularly interesting due to the global abundance of this wetland plant (Phragmites australis) and th

Externí odkaz: https://doaj.org/article/d76e856e8a1c495f82958603a62940f3

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Akademický článek

Energy balance closure on a winter wheat stand: comparing the eddy covariance technique with the soil water balance method

Autor: K. Imukova, J. Ingwersen, M. Hevart, T. Streck

Publikováno v: Biogeosciences, Vol 13, Iss 1, Pp 63-75 (2016)

The energy balance of eddy covariance (EC) flux data is typically not closed. The nature of the gap is usually not known, which hampers using EC data to parameterize and test models. In the present study we cross-checked the evapotranspiration data o

Externí odkaz: https://doaj.org/article/f3690b73d97345cdbe7516d9f3a61442

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Akademický článek

On the use of the post-closure methods uncertainty band to evaluate the performance of land surface models against eddy covariance flux data

Autor: J. Ingwersen, K. Imukova, P. Högy, T. Streck

Publikováno v: Biogeosciences, Vol 12, Iss 8, Pp 2311-2326 (2015)

The energy balance of eddy covariance (EC) flux data is normally not closed. Therefore, at least if used for modelling, EC flux data are usually post-closed, i.e. the measured turbulent fluxes are adjusted so as to close the energy balance. At the cu

Externí odkaz: https://doaj.org/article/c1e75db20e1749b6900af691f4959745

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Akademický článek

A three-component hydrograph separation based on geochemical tracers in a tropical mountainous headwater catchment in northern Thailand

Autor: C. Hugenschmidt, J. Ingwersen, W. Sangchan, Y. Sukvanachaikul, A. Duffner, S. Uhlenbrook, T. Streck

Publikováno v: Hydrology and Earth System Sciences, Vol 18, Iss 2, Pp 525-537 (2014)

Land-use change in the mountainous parts of northern Thailand is reflected by an increased application of agrochemicals, which may be lost to surface and groundwater. The close relation between flow paths and contaminant transport within hydrological

Externí odkaz: https://doaj.org/article/deb3962a08bd48edb5e796cf57dc5fb7

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Akademický článek

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