Atmospheric and Hydrospheric Sciences (A)
Session Sub-category Complex & General(CG)
Session ID A-CG67
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
Time Presentation No Title Presenter
Oral Presentation May 28 AM1
9:00 - 9:30 ACG67-01 Ocean Iron Fertilization as mCDR: ExOIS project Makio Honda
9:30 - 9:45 ACG67-02 Development of an extraction protocol and colorimetric analysis for alginate in marine sediment KAWAHRA Takashi
9:45 - 10:00 ACG67-03 Relationship between Marine Heatwaves and pCO2 in the subtropical northeastern Pacific in the summer of 2025 Naohiro Kosugi
10:00 - 10:15 ACG67-04 Ocean acidification and changes in biological production in the western subarctic region of the North Pacific over the quarter century, 1999–2023 Masahide Wakita
10:15 - 10:30 ACG67-05 Biogeochemical properties of shallow-water CO2 seeps on Himeshima Island and Showa Iwojima Island, Japan Masahiko Fujii
Oral Presentation May 28 AM2
10:45 - 11:00 ACG67-06 Latitudinal characteristics of iodide concentrations in surface seawater over the western North Pacific based on multi-cruise observations Yoko Iwamoto
11:00 - 11:15 ACG67-07 Origins and Formation Process of Organic Aerosol in the Southern Sea of Okhotsk During the Phytoplankton Bloom in Spring Zhengyang Fang
11:15 - 11:30 ACG67-08 Sea Surface Microlayer and Seafoam as Gateways for Marine Microbial Aerosols Koji Hamasaki
11:30 - 11:45 ACG67-09 Historical changes in Fe flux, solubility, and source since the Industrial Revolution reconstructed from a Southeastern Greenland ice core Minako Kurisu
11:45 - 12:00 ACG67-10 Development of an algorithm for detecting biogenic sea-surface slicks and estimation of their horizontal distribution using SAR satellite images Yutaka Tsuchiya
Presentation No Title Presenter
Poster Presentation May 28 PM3
ACG67-P01 Rainfall-Driven Reactive Nitrogen Deposition Enhances Phytoplankton Photosynthetic Performance in the Oligotrophic Subtropical Western North Pacific Kazuhiko Matsumoto
ACG67-P02 Temporal variations in characteristics and sources of microparticles in a Kamchatka ice core Naoko Nagatsuka
ACG67-P03 Trans-Pacific transport of Saharan dust inferred from the Mount Logan ice core and numerical simulations Kana Nagashima
ACG67-P04 Strong methane release from mangrove system in the southern Vietnam Sohiko Kameyama
ACG67-P05 Biogeochemical Responses of the Biological Carbon Pump to Ocean Warming and Acidification: An Overview of the C-LIFE Project Maki Noguchi Aita