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Your search keyword '"NEMITZ, EIKO"' showing total 8 results
Start Over Author "NEMITZ, EIKO" Journal biogeosciences
8 results on '"NEMITZ, EIKO"'

2. Carbon–nitrogen interactions in European forests and semi-natural vegetation – Part 1: Fluxes and budgets of carbon, nitrogen and greenhouse gases from ecosystem monitoring and modelling

Author

Flechard, Chris R., primary, Ibrom, Andreas, additional, Skiba, Ute M., additional, de Vries, Wim, additional, van Oijen, Marcel, additional, Cameron, David R., additional, Dise, Nancy B., additional, Korhonen, Janne F. J., additional, Buchmann, Nina, additional, Legout, Arnaud, additional, Simpson, David, additional, Sanz, Maria J., additional, Aubinet, Marc, additional, Loustau, Denis, additional, Montagnani, Leonardo, additional, Neirynck, Johan, additional, Janssens, Ivan A., additional, Pihlatie, Mari, additional, Kiese, Ralf, additional, Siemens, Jan, additional, Francez, André-Jean, additional, Augustin, Jürgen, additional, Varlagin, Andrej, additional, Olejnik, Janusz, additional, Juszczak, Radosław, additional, Aurela, Mika, additional, Berveiller, Daniel, additional, Chojnicki, Bogdan H., additional, Dämmgen, Ulrich, additional, Delpierre, Nicolas, additional, Djuricic, Vesna, additional, Drewer, Julia, additional, Dufrêne, Eric, additional, Eugster, Werner, additional, Fauvel, Yannick, additional, Fowler, David, additional, Frumau, Arnoud, additional, Granier, André, additional, Gross, Patrick, additional, Hamon, Yannick, additional, Helfter, Carole, additional, Hensen, Arjan, additional, Horváth, László, additional, Kitzler, Barbara, additional, Kruijt, Bart, additional, Kutsch, Werner L., additional, Lobo-do-Vale, Raquel, additional, Lohila, Annalea, additional, Longdoz, Bernard, additional, Marek, Michal V., additional, Matteucci, Giorgio, additional, Mitosinkova, Marta, additional, Moreaux, Virginie, additional, Neftel, Albrecht, additional, Ourcival, Jean-Marc, additional, Pilegaard, Kim, additional, Pita, Gabriel, additional, Sanz, Francisco, additional, Schjoerring, Jan K., additional, Sebastià, Maria-Teresa, additional, Tang, Y. Sim, additional, Uggerud, Hilde, additional, Urbaniak, Marek, additional, van Dijk, Netty, additional, Vesala, Timo, additional, Vidic, Sonja, additional, Vincke, Caroline, additional, Weidinger, Tamás, additional, Zechmeister-Boltenstern, Sophie, additional, Butterbach-Bahl, Klaus, additional, Nemitz, Eiko, additional, and Sutton, Mark A., additional

Published
2020
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3. Carbon–nitrogen interactions in European forests and semi-natural vegetation – Part 2: Untangling climatic, edaphic, management and nitrogen deposition effects on carbon sequestration potentials

Author

Flechard, Chris R., primary, van Oijen, Marcel, additional, Cameron, David R., additional, de Vries, Wim, additional, Ibrom, Andreas, additional, Buchmann, Nina, additional, Dise, Nancy B., additional, Janssens, Ivan A., additional, Neirynck, Johan, additional, Montagnani, Leonardo, additional, Varlagin, Andrej, additional, Loustau, Denis, additional, Legout, Arnaud, additional, Ziemblińska, Klaudia, additional, Aubinet, Marc, additional, Aurela, Mika, additional, Chojnicki, Bogdan H., additional, Drewer, Julia, additional, Eugster, Werner, additional, Francez, André-Jean, additional, Juszczak, Radosław, additional, Kitzler, Barbara, additional, Kutsch, Werner L., additional, Lohila, Annalea, additional, Longdoz, Bernard, additional, Matteucci, Giorgio, additional, Moreaux, Virginie, additional, Neftel, Albrecht, additional, Olejnik, Janusz, additional, Sanz, Maria J., additional, Siemens, Jan, additional, Vesala, Timo, additional, Vincke, Caroline, additional, Nemitz, Eiko, additional, Zechmeister-Boltenstern, Sophie, additional, Butterbach-Bahl, Klaus, additional, Skiba, Ute M., additional, and Sutton, Mark A., additional

Published
2020
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4. Isoprene emission potentials from European oak forests derived from canopy flux measurements: an assessment of uncertainties and inter-algorithm variability

Author

Langford, Ben, primary, Cash, James, additional, Acton, W. Joe F., additional, Valach, Amy C., additional, Hewitt, C. Nicholas, additional, Fares, Silvano, additional, Goded, Ignacio, additional, Gruening, Carsten, additional, House, Emily, additional, Kalogridis, Athina-Cerise, additional, Gros, Valérie, additional, Schafers, Richard, additional, Thomas, Rick, additional, Broadmeadow, Mark, additional, and Nemitz, Eiko, additional

Published
2017
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6. The nitrogen, carbon and greenhouse gas budget of a grazed, cut and fertilised temperate grassland

Author

Jones, Stephanie K., primary, Helfter, Carole, additional, Anderson, Margaret, additional, Coyle, Mhairi, additional, Campbell, Claire, additional, Famulari, Daniela, additional, Di Marco, Chiara, additional, van Dijk, Netty, additional, Tang, Y. Sim, additional, Topp, Cairistiona F. E., additional, Kiese, Ralf, additional, Kindler, Reimo, additional, Siemens, Jan, additional, Schrumpf, Marion, additional, Kaiser, Klaus, additional, Nemitz, Eiko, additional, Levy, Peter E., additional, Rees, Robert M., additional, Sutton, Mark A., additional, and Skiba, Ute M., additional

Published
2017
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7. The import and export of organic nitrogen species at a Scottish ombrotrophic peatland

Author

McKenzie, Rebecca M., primary, Özel, Mustafa Z., additional, Cape, J. Neil, additional, Drewer, Julia, additional, Dinsmore, Kerry J., additional, Nemitz, Eiko, additional, Tang, Y. Sim, additional, van Dijk, Netty, additional, Anderson, Margaret, additional, Hamilton, Jacqueline F., additional, Sutton, Mark A., additional, Gallagher, Martin W., additional, and Skiba, Ute, additional

Published
2016
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8. Process-based modelling of NH3 exchange with grazed grasslands.

Author

Móring, Andrea, Vieno, Massimo, Doherty, Ruth M., Milford, Celia, Nemitz, Eiko, Twigg, Marsailidh M., Horváth, László, and Sutton, Mark A.

Subjects
AMMONIA & the environment, MICROMETEOROLOGY, SOIL physics, SOIL moisture, SENSITIVITY analysis
Abstract

In this study the GAG model, a process-based ammonia (NH3/ emission model for urine patches, was extended and applied for the field scale. The new model (GAG_field) was tested over two modelling periods, for which micrometeorological NH3 flux data were available. Acknowledging uncertainties in the measurements, the model was able to simulate the main features of the observed fluxes. The temporal evolution of the simulated NH3 exchange flux was found to be dominated by NH3 emission from the urine patches, offset by simultaneous NH3 deposition to areas of the field not affected by urine. The simulations show how NH3 fluxes over a grazed field in a given day can be affected by urine patches deposited several days earlier, linked to the interaction of volatilization processes with soil pH dynamics. Sensitivity analysis showed that GAG_field was more sensitive to soil buffering capacity (β/, field capacity (θfc/ and permanent wilting point (θpwp/ than the patch-scale model. The reason for these different sensitivities is dual. Firstly, the difference originates from the different scales. Secondly, the difference can be explained by the different initial soil pH and physical properties, which determine the maximum volume of urine that can be stored in the NH3 source layer. It was found that in the case of urine patches with a higher initial soil pH and higher initial soil water content, the sensitivity of NH3 exchange to β was stronger. Also, in the case of a higher initial soil water content, NH3 exchange was more sensitive to the changes in θfc and θpwp. The sensitivity analysis showed that the nitrogen content of urine (cN/ is associated with high uncertainty in the simulated fluxes. However, model experiments based on cN values randomized from an estimated statistical distribution indicated that this uncertainty is considerably smaller in practice. Finally, GAG_field was tested with a constant soil pH of 7.5. The variation of NH3 fluxes simulated in this way showed a good agreement with those from the simulations with the original approach, accounting for a dynamically changing soil pH. These results suggest a way for model simplification when GAG_field is applied later at regional scale. [ABSTRACT FROM AUTHOR]

Published
2017
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