SPEPS収録論文
20.Biogeochemical Studies on Atmosphere, Ocean, and their Interaction in the western North Pacific region
The western North Pacific is recognized as a large sink region for CO2, involving complex interactions across multiple spheres in the cycling process. Recent rapid climate changes have perturbed the biogeochemical and physical processes in the atmosphere and ocean of this region. To enhance our understanding of these processes in this region, integrated and cross-cutting studies are essential, encompassing the Atmosphere, Hydrosphere, Biosphere, and Humanosphere across various temporal and spatial scales. In this special issue SPEPS, we invite authors to contribute their latest studies and/or reviews focusing on Atmosphere, Ocean, and Atmosphere-Ocean Interaction in the western North Pacific region. We particularly welcome multidisciplinary studies that couple chemical, biological, and/or physical topics related to the atmosphere and ocean, obtained from ship-based observation, numerical model calculations, satellite data analysis, and laboratory experiments. Discussions centered on ground-based observation surrounding the western North Pacific are also welcomed.
Edited by: Fumikazu Taketani, Jun Nishioka, Tung-Yuan Ho, Yuko Omori, Kana Nagashima, Koji Sugie, Guo Cui
Research articles: Atmospheric and hydrospheric sciences
Published: November 26, 2025
Seasonal and interannual variations in local minimum sea surface temperature and maximum chlorophyll-a around the Savu Sea, Indonesia
Florence Mila Purnomo Sie, Sayaka Yasunaka, Anindya Wirasatriya
Research articles: Biogeosciences
Published: November 20, 2025
Diel and daily changes of water mass structure and biogeochemical processes in early spring in the western subtropical North Pacific
Chiho Sukigara, Taichi Yokokawa, Akiko Makabe, Kaho Mori, Yu Nakajima, Shinya Kouketsu, Eiji Tasumi, Masumi Hasegawa-Takano, Naoto F Ishikawa, Chunqi Jiang, Siyu Jiang, Riku Miyase, Satoshi Nishino, Youta Sugai, Kento Tominaga, Hiroshi Uchida, Yu Yoshida, Susumu Yoshizawa, Shinsuke kawagucci
Research articles: Atmospheric and hydrospheric sciences
Published: November 12, 2025
Simultaneous observations of atmospheric IO radical, O<sub>3</sub>, and sea surface iodide over the tropical western Pacific warm pool: strong correlation of IO levels with estimated inorganic iodine fluxes
Hisahiro TAKASHIMA, Yugo Kanaya, Yoko Iwamoto, Kazuhiko Takeda, Takashi Sekiya, Fumikazu Taketani, Martina M Friedrich, Michel Van Roozendael, Atsushi Ooki, Takuma Miyakawa, Shin-Ya Ogino, Masaki Katsumata
Research articles: Biogeosciences
Published: October 30, 2025
Biogeochemical properties of shallow-water CO₂ seeps on Himeshima Island and Showa Iwojima Island, Japan
Masahiko Fujii, Tsuneo Ono, Makoto Yamada, Manabu Ooue, Takeru Ito, Jen-Han Yang, Yu Horiuchi, Hisashi Oiwane, Masahide Wakita, Shigeki Wada
Research articles: Biogeosciences
Published: September 10, 2025
New evaluation of vertical particulate organic carbon fluxes of submillimeter‑sized phaeodarians in the mesopelagic twilight zone of the western North Pacific Ocean
Takahito Ikenoue, Nanako O. Ogawa, Hidetaka Nomaki, Katsunori Kimoto, Makio C. Honda, Naohiko Ohkouchi, Tetsuichi Fujiki
Research articles: Atmospheric and hydrospheric sciences
Published: September 1, 2025
Natural and continental influence on aerosol distributions over the northwestern Pacific Ocean in the late winter and early spring of 2021
Takuma Miyakawa, Takeshi Kinase, Minako Kurisu, Kyoko Taniguchi, Masaki Katsumata, Hisahiro Takashima, Fumikazu Taketani, Yugo Kanaya
Research articles: Atmospheric and hydrospheric sciences
Published: June 23, 2025
Evaluation of processes driving iodine monoxide and ozone variability over the Western Pacific warm pool
Takashi Sekiya, Hisashiro Takashima, Yugo Kanaya, Fumikazu Taketani, Kengo Sudo, Martina M. Friedrich & Michel Van Roozendael
Research articles: Atmospheric and hydrospheric sciences
Published: June 16, 2025
Dissolved inorganic carbon entrainment into the mixed layer of the western subarctic North Pacific: a key process of ocean acidification under historical carbon dioxide emissions
Akira Nagano, Masahito Shigemitsu, Masahide Wakita
Research articles: Interdisciplinary research
Published: January 21, 2025
Spatiotemporal variation of high-temperature events and its relation to coral bleaching in the Ryukyu Islands, Japan
Sayaka Yasunaka, Haruko Kurihara, Takeshi Doi
Research articles: Atmospheric and hydrospheric sciences
Published: September 5, 2024
Kuroshio Extension cold-core ring and wind drop-off observed in 2021–2022 winter
Akira Nagano, Minoru Kitamura, Kensuke Watari, Iwao Ueki