TY - JOUR
T1 - Reviews and syntheses
T2 - The GESAMP atmospheric iron deposition model intercomparison study
AU - Myriokefalitakis, Stelios
AU - Ito, Akinori
AU - Kanakidou, Maria
AU - Nenes, Athanasios
AU - Krol, Maarten C.
AU - Mahowald, Natalie M.
AU - Scanza, Rachel A.
AU - Hamilton, Douglas S.
AU - Johnson, Matthew S.
AU - Meskhidze, Nicholas
AU - Kok, Jasper F.
AU - Guieu, Cecile
AU - Baker, Alex R.
AU - Jickells, Timothy D.
AU - Sarin, Manmohan M.
AU - Bikkina, Srinivas
AU - Shelley, Rachel
AU - Bowie, Andrew
AU - Perron, Morgane M.G.
AU - Duce, Robert A.
N1 - Funding Information:
Stelios Myriokefalitakis acknowledges financial support for this research from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 705652 - ODEON. Support for this research was provided to Akinori Ito by JSPS KAKENHI grant no. JP16K00530 and the Integrated Research Program for Advancing Climate Models (MEXT). Natalie M. Mahowald, Rachel A. Scanza and Douglas S. Hamilton acknowledge support from a Department of Energy grant (DE-SC0006791CE14). Andrew Bowie and Morgane M. G. Perron were funded by an Australian Research Council Future Fellowship (FT130100037). We are grateful to Thibaut Wagener for kindly providing the field data set. This work is prepared in the framework of the Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection (GESAMP; http://www.gesamp.org/, last access: 5 November 2018), Working Group 38, the Atmospheric Input of Chemicals to the Ocean. We thank the Global Atmosphere Watch and the World Weather Research Programme of the World Meteorological Organization, the International Maritime Organization, the U.S. National Science Foundation, the ICSU Scientific Committee on Oceanic Research (SCOR) and the University of East Anglia for their financial support. We also thank SOLAS for their sponsorship. Data post-processing was carried out on the Dutch national e-infrastructure with the support of the SURF Cooperative. The publication of this work was financed by Utrecht University and by the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 705652 - ODEON.
Publisher Copyright:
© Author(s) 2018.
PY - 2018/11/9
Y1 - 2018/11/9
N2 - This work reports on the current status of the global modeling of iron (Fe) deposition fluxes and atmospheric concentrations and the analyses of the differences between models, as well as between models and observations. A total of four global 3-D chemistry transport (CTMs) and general circulation (GCMs) models participated in this intercomparison, in the framework of the United Nations Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection (GESAMP) Working Group 38, "The Atmospheric Input of Chemicals to the Ocean". The global total Fe (TFe) emission strength in the models is equal to ∼ 72 TgFeyr-1 (38-134 TgFe yr-1) from mineral dust sources and around 2.1 TgFeyr-1 (1.8-2.7 TgFeyr-1) from combustion processes (the sum of anthropogenic combustion/ biomass burning and wildfires). The mean global labile Fe (LFe) source strength in the models, considering both the primary emissions and the atmospheric processing, is calculated to be 0.7 (±0:3) TgFeyr-1, accounting for both mineral dust and combustion aerosols. The mean global deposition fluxes into the global ocean are estimated to be in the range of 10-30 and 0.2-0.4 TgFeyr-1 for TFe and LFe, respectively, which roughly corresponds to a respective 15 and 0.3 TgFeyr-1 for the multi-model ensemble model mean.
AB - This work reports on the current status of the global modeling of iron (Fe) deposition fluxes and atmospheric concentrations and the analyses of the differences between models, as well as between models and observations. A total of four global 3-D chemistry transport (CTMs) and general circulation (GCMs) models participated in this intercomparison, in the framework of the United Nations Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection (GESAMP) Working Group 38, "The Atmospheric Input of Chemicals to the Ocean". The global total Fe (TFe) emission strength in the models is equal to ∼ 72 TgFeyr-1 (38-134 TgFe yr-1) from mineral dust sources and around 2.1 TgFeyr-1 (1.8-2.7 TgFeyr-1) from combustion processes (the sum of anthropogenic combustion/ biomass burning and wildfires). The mean global labile Fe (LFe) source strength in the models, considering both the primary emissions and the atmospheric processing, is calculated to be 0.7 (±0:3) TgFeyr-1, accounting for both mineral dust and combustion aerosols. The mean global deposition fluxes into the global ocean are estimated to be in the range of 10-30 and 0.2-0.4 TgFeyr-1 for TFe and LFe, respectively, which roughly corresponds to a respective 15 and 0.3 TgFeyr-1 for the multi-model ensemble model mean.
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U2 - 10.5194/bg-15-6659-2018
DO - 10.5194/bg-15-6659-2018
M3 - Review article
AN - SCOPUS:85056541302
SN - 1726-4170
VL - 15
SP - 6659
EP - 6684
JO - Biogeosciences
JF - Biogeosciences
IS - 21
ER -