Atmospheric and Hydrospheric Sciences (A)
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
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.
Presentation Format Oral and Poster presentation
Invited Authors Yasunori Tohjima (National Institute for Environmental Studies)
Yumiko Obayashi (Ehime University)
Time Presentation No Title Presenter
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
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