Výsledky vyhledávání - "W.A.H. Asman"

Integrated Assessment of Nitrogen Losses from Agriculture in EU-27 using MITERRA-EUROPE

Autor: W.A.H. Asman, D.A. Oudendag, Oene Oenema, H.P. Witzke, Gerard L. Velthof, Zbigniew Klimont

Publikováno v: Journal of Environmental Quality, 38(2), 402-417
Journal of Environmental Quality 38 (2009) 2

Received for publication February 29, 2008. The high N inputs to agricultural systems in many regions in 27 member states of the European Union (EU-27) result in N leaching to groundwater and surface water and emissions of ammonia (NH3), nitrous oxid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2dc52821006817ba7f76365d9487b27
https://doi.org/10.2134/jeq2008.0108

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Modelling greenhouse gas emissions from European conventional and organic dairy farms

Autor: Jørgen E. Olesen, Kirsten Schelde, Martin Riis Weisbjerg, J. Djurhuus, W.A.H. Asman, A. Weiske

Publikováno v: Olesen, J E, Schelde, K, Weiske, M R, Weisbjerg, M R, Asman, W A H & Djurhuus, J 2006, ' Modelling greenhouse gas emissions from European conventional and organic dairy farms ', Agriculture, Ecosystems & Environment, vol. 112, pp. 207-220 . https://doi.org/10.1016/j.agee.2005.08.022

Agriculture is an important contributor to global emissions of greenhouse gases (GHG), in particular for methane (CH4) and nitrous oxide (N2O). Emissions from farms with a stock of ruminant animals are particularly high due to CH4 emissions from ente

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a32a884f8e8a911b9aefd3196b2f529e
https://doi.org/10.1016/j.agee.2005.08.022

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[Untitled]

Autor: Y. Sim Tang, Thomas Gauger, Thomas Ellermann, Marta Mitosinkova, Mark A. Sutton, Karin Acker, J.A. van Jaarsveld, Jerzy Bartniki, Beat Achermann, Albrecht Neftel, Viney P. Aneja, Jan Duyzer, W.A.H. Asman, Jan Willem Erisman, Laszlo Horvath, Sergey Paramonov

Publikováno v: Environmental Monitoring and Assessment. 82:149-185

In the context of international efforts to reduce the impactsof atmospheric NH3 and NH4 + (collectively, NHx), it is important to establish the link between NH3emissions and monitoring of NHx concentrations and deposition. This is equally relevant to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::96fead200b29e95a7ac2010ef11c9516
https://doi.org/10.1023/a:1021834132138

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Atmospheric nitrogen compounds II: emissions, transport, transformation, deposition and assessment

Autor: George C. Murray, James H. Southerland, Jan Willem Erisman, David Fowler, Naveen Patni, Paul A. Roelle, Viney P. Aneja, W.A.H. Asman

Publikováno v: Atmospheric Environment. 35:1903-1911

The Atmospheric Nitrogen Compounds II: Emissions, Transport, Transformation, Deposition and Assessment workshop was held in Chapel Hill, NC from 7 to 9 June 1999. This international conference, which served as a follow-up to the workshop held in Marc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4527d104c93d9156e62568c3847eb377
https://doi.org/10.1016/s1352-2310(00)00543-4

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A detailed ammonia emission inventory for Denmark

Autor: Nicholas J. Hutchings, J. Andersen, Sven G. Sommer, W.A.H. Asman

Publikováno v: Atmospheric Environment. 35:1959-1968

This paper describes the method used to create an ammonia inventory for Denmark and presents the emission factors used and their justification. The total Danish emission for 1996 was 92,700 t NH4+–N, with agriculture accounting for nearly 99%. Emis

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https://doi.org/10.1016/s1352-2310(00)00542-2

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Ammonia: emission, atmospheric transport and deposition

Autor: Mark A. Sutton, W.A.H. Asman, J. K. Schjørring

Publikováno v: Asman, W A H, Sutton, M A & Schjørring, J K 1998, ' Ammonia: Emission, Atmospheric Transport and Deposition ' New Phytologist, vol. 139, pp. 27-48 .

The global emission of ammonia (NH 3 ) is about 54 Mt N. The major global sources are excreta from domestic animals and fertilizers, but oceans, biomass burning and crops are also important. About 60% of the global NH 2 emission is estimated to come

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::019b348bff9651e01c046fecfdabaca5
https://doi.org/10.1046/j.1469-8137.1998.00180.x

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A global high-resolution emission inventory for ammonia

Autor: J. G. J. Olivier, K.W. Van Der Hoek, David S. Lee, W.A.H. Asman, Frank Dentener, Alexander F. Bouwman

Publikováno v: Global Biogeochemical Cycles. 11:561-587

A global emissions inventory for ammonia (NH3) has been compiled for the main known sources on a 1° × 1° grid, suitable for input to global atmospheric models. The estimated global emission for 1990 is about 54 Tg N yr−1. The major sources ident

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ec0a82d5a9f1eba438deeda371731d01
https://doi.org/10.1029/97gb02266

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Estimation of the net air-sea flux of ammonia over the southern bight of the North Sea

Autor: Chris J. Ottley, Roy M. Harrison, W.A.H. Asman

Publikováno v: Atmospheric Environment. 28:3647-3654

Measurements of airborne gaseous ammonia and total dissolved ammonium in sea water determined on cruises on the North Sea have been used to calculate net fluxes of ammonia between air and sea. The system is finely balanced with the majority of net fl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::930e729935214ba196a18a0f8f08b762
https://doi.org/10.1016/1352-2310(94)00192-n

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Bi-directional air-surface exchange of atmospheric ammonia: A review of measurements and a development of a big-leaf model for applications in regional-scale air-quality models

Autor: Leiming Zhang, L. P. Wright, W.A.H. Asman

Publikováno v: Journal of Geophysical Research. 115

[1] The air-surface exchange of atmospheric ammonia (NH3) and measurements of the canopy and stomatal compensation points (χcp and χst, respectively) and the stomatal and soil emission potentials (Γst and Γg, respectively) are reviewed. A databas

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::176e164825e6cf6bc0f76e2553cb2639
https://doi.org/10.1029/2009jd013589

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A variable-resolution transport model applied for NHχ in Europe

Autor: W.A.H. Asman, Hans A. van Jaarsveld

Publikováno v: Atmospheric Environment. Part A. General Topics. 26:445-464

The statistical atmospheric transport model TREND has been applied for the calculation of concentrations and depositions of ammonia (NH3) and ammonium (NH4+). The model is capable of describing dispersion, conversion and deposition from both local so

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https://doi.org/10.1016/0960-1686(92)90329-j

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