Atmospheric and Hydrospheric Sciences (A) | ||
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Session Sub-category | Complex & General(CG) | |
Session ID | A-CG50 | |
Title | Biogeochemical linkages between the surface ocean and atmosphere | |
Short Title | Biogeochemistry of ocean-atmosphere | |
Main Convener | Name | Sohiko Kameyama |
Affiliation | Hokkaido University | |
Co-Convener 1 | Name | Yoko Iwamoto |
Affiliation | Graduate School of Integrated Sciences for Life, Hiroshima University | |
Co-Convener 2 | Name | Maki Noguchi Aita |
Affiliation | Japan Agency for Marine-Earth Science and Technology | |
Co-Convener 3 | Name | Naohiro Kosugi |
Affiliation | Meteorological Research Institute | |
Session Language |
J |
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Scope |
Multi-scale vertical and horizontal ocean mixing processes can strongly influence the distribution of dissolved and suspended substances including macro- and micro-nutrients, and may impact on the global carbon cycles. The changes in nutrient dynamics generally affect the abundance, composition and metabolic activity of marine organisms such as phytoplankton and bacteria during the bloom. Marine phytoplankton can produce volatile organic compounds (VOCs) and marine atmospheric aerosols, which strongly influence on atmospheric chemistry. Primary and secondary organic and inorganic components produced via marine phytoplankton activity can contribute to the Earth's radiative forcing, and in turn marine ecosystems including biogeochemical processes directly or indirectly. Therefore, the biogeochemical cycles have a tight linkage between the ocean and the atmosphere. In order to understand physical, chemical and biological processes relevant to phytoplankton bloom formation in the ocean, dynamics of VOCs and marine aerosols in the atmosphere, and the biogeochemical linkage between the ocean and the atmosphere, we welcome new interdisciplinary presentations and active discussions on physical, chemical, and biological sciences both from ocean and atmospheric fields in this session. Studies linked to the Surface Ocean-Lower Atmosphere Study (SOLAS) project are good examples, but other related studies are also invited. |
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Presentation Format | Oral and Poster presentation | |
Invited Authors |
Yasunori Tohjima (National Institute for Environmental Studies) Yumiko Obayashi (Ehime University) |
Time | Presentation No | Title | Presenter |
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Oral Presentation May 29 PM1 | |||
13:45 - 14:00 | ACG50-01 | High-sensitivity tracer assay for oxygen consumption rate in seawater column: Application to quantify new production rate | Urumu Tsunogai |
14:00 - 14:30 | ACG50-02 | Research on the atmosphere-ocean gas exchange based on precise measurements of the atmospheric O2 and CO2 concentrations | Yasunori Tohjima |
14:30 - 14:45 | ACG50-03 | Autumn oxygen emission from ocean around Japan | Naohiro Kosugi |
14:45 - 15:00 | ACG50-04 | Tracing the sources of excess methane in subsurface seawater using both stable carbon and hydrogen isotope ratios as tracers | Fumiko Nakagawa |
15:00 - 15:15 | ACG50-05 | Quantification of the factors contributing to decadal variations of air-sea CO2 flux in the North Pacific Ocean | Tatsuki Tokoro |
Oral Presentation May 29 PM2 | |||
15:30 - 16:00 | ACG50-06 | Research on biogeochemical processes at sea surface microlayer | Yumiko Obayashi |
16:00 - 16:15 | ACG50-07 | Distribution and origin of methane-rich plumes in the shallow water columns, off Boso area | Chihiro Amaki |
16:15 - 16:30 | ACG50-08 | Distribution of Inorganic Iodine in Shallow Waters off Boso, Japan | Yoko Iwamoto |
16:30 - 16:45 | ACG50-09 | Vertical profile of volatile organic iodine compounds in seawater of the subarctic, subtropical and tropical North Pacific | Atsushi Ooki |
16:45 - 17:00 | ACG50-10 | Seasonal variations in the sources of atmospheric organic aerosols in northern Greenland | Yuzo Miyazaki |
Presentation No | Title | Presenter |
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Poster Presentation May 29 PM3 | ||
ACG50-P01 | Observational activities for estimation on methane flux from the coastal area in Vietnam | Sohiko Kameyama |
ACG50-P02 | Methane concentration of late summer brash sea ice in the Pacific Sector of the Arctic Ocean | Daiki Nomura |
ACG50-P03 | Seasonal variation of the air−sea ice CO2 flux during MOSAiC expedition in the Central Arctic Ocean | Daiki Nomura |
ACG50-P04 | Estimation of global distribution of seawater dimethyl sulfide (DMS) concentration using machine learning | Ippei Nagao |
ACG50-P05 | Transportation of bromoform derived from macroalgae ~Results of the Shinsei-Maru KS-24-12 cruise~ | Atsushi Ooki |
ACG50-P06 | Microbial aerosols during a Trichodesmium bloom in the subtropical western North Pacific | Koji Hamasaki |