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한국지구과학회
The Korean Earth Science Society

pISSN : 1225-6692  |  eISSN : 2287-4518



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kess64, vol. 42, no. 4, pp.390-400, August, 2021

DOI. https://doi.org/10.5467/JKESS.2021.42.4.390

Impact of Iron Scavenging and Desorption Parameters on Chlorophyll Simulation in the Tropical Pacific within NEMO-TOPAZ

Hyomee Lee1, Byung-Kwon Moon1,*, Jong-Yeon Park2, Han-Kyoung Kim1, Hyun-Chae Jung3, Jieun Wie1, Hyo Jin Park4, Young-Hwa Byun5, Yoon-Jin Lim6, and Johan Lee7
1Division of Science Education & Institute of Fusion Science, Jeonbuk National University, Jeonju 54896, Korea 2Division of Earth and Environmental Science, Jeonbuk National University, Jeonju 54896, Korea 3Mirae Climate Co., Ltd., Seoul 08511, Korea 4Jeonju Jungang Middle School, Jeonju 54991, Korea 5Innovative Meteorological Research Department, National Institute of Meteorological Sciences, Seogwipo 63568, Korea 6Numerical Modeling Center, Korea Meteorological Administration, Seoul 07062, Korea 7Operational Systems Development Department, National Institute of Meteorological Sciences, Seogwipo 63568, Korea

Abstract

Ocean biogeochemistry plays a crucial role in sustaining the marine ecosystem and global carbon cycle. To investigate the oceanic biogeochemical responses to iron parameters in the tropical Pacific, we conducted sensitivity experiments using the Nucleus for European Modelling of the Ocean-Tracers of Ocean Phytoplankton with Allometric Zooplankton (NEMO-TOPAZ) model. Compared to observations, the NEMO-TOPAZ model overestimated the concentrations of chlorophyll and dissolved iron (DFe). The sensitivity tests showed that with increasing (+50%) iron scavenging rates, chlorophyll concentrations in the tropical Pacific were reduced by approximately 16%. The bias in DFe also decreased by approximately 7%; however, the sea surface temperature was not affected. As such, these results can facilitate the development of the model tuning strategy to improve ocean biogeochemical performance using the NEMOTOPAZ model.

Keyword

ocean biogeochemistry, chlorophyll, dissolved iron, NEMO-TOPAZ

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