edu.ucar.opensky::articles:20865 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T02:27:43.862733 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d72r3v35 Observation- and model-based estimates of particulate dry nitrogen deposition to the oceans 2017-07-05T00:00:00Z publication https://n2t.org/ark:/85065/d72r3v35 https://doi.org/10.5194/acp-17-8189-2017 Baker, A. R. author Kanakidou, M. author Altieri, K. E. author Daskalakis, N. author Okin, G. S. author Myriokefalitakis, S. author Dentener, F. author Uematsu, M. author Sarin, M. M. author Duce, R. A. author Galloway, J. N. author Keene, W. C. author Singh, A. author Zamora, L. author Lamarque, Jean-François author Hsu, S. author Rohekar, S. S. author Prospero, J. M. author UCAR/NCAR - Library publisher Anthropogenic nitrogen (N) emissions to the atmosphere have increased significantly the deposition of nitrate (NO3-) and ammonium (NH4+) to the surface waters of the open ocean, with potential impacts on marine productivity and the global carbon cycle. Global-scale understanding of the impacts of N deposition to the oceans is reliant on our ability to produce and validate models of nitrogen emission, atmospheric chemistry, transport and deposition. In this work, similar to 2900 observations of aerosol NO3- and NH4+ concentrations, acquired from sampling aboard ships in the period 1995-2012, are used to assess the performance of modelled N concentration and deposition fields over the remote ocean. Three ocean regions (the eastern tropical North Atlantic, the northern Indian Ocean and northwest Pacific) were selected, in which the density and distribution of observational data were considered sufficient to provide effective comparison to model products. All of these study regions are affected by transport and deposition of mineral dust, which alters the deposition of N, due to uptake of nitrogen oxides (NOx) on mineral surfaces. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright Author(s) 2017 This work is distributed under the Creative Commons Attribution 3.0 License. None eng geoscientificInformation