◆ Atmospheric warming over the Barents Sea during moisture intrusion events in January 2006 ‥‥‥‥‥ 7 – 18
　 Part I: Heating mechanism
　　　　Atsuyoshi MANDA (Graduate School of Bioresources, Mie University)　
　　　　　(doi.org/10.57287/ospor.6.7)　
　　
◆ Atmospheric warming over the Barents Sea during moisture intrusion events in January 2006 ‥‥‥‥‥ 19 – 26
　 Part II: Impact of sea ice decline
　　Atsuyoshi MANDA (Graduate School of Bioresources, Mie University)
　　　　　(doi.org/10.57287/ospor.6.19)　

◆ Sea ice variability along the Okhotsk coast of Hokkaido based on long-term JMA ‥‥‥‥‥‥‥‥‥‥‥‥ 27 – 35
　meteorological observatory data 　
　　Takahiro TOYODA, Yoshiteru KITAMURA (Meteorological Research Institute,
　　Japan Meteorological Agency), Ryohei OKADA (Atmosphere and Ocean Department,
　　Japan Meteorological Agency), Kanichiro MATSUMURA (Faculty of Bioindustry,
　　Tokyo University of Agriculture), Kensuke K. KOMATSU, Kei SAKAMOTO,
　　L. Shogo URAKAWA and Hideyuki NAKANO (Meteorological Research Institute,
　　Japan Meteorological Agency )
　　　　　(doi.org/10.57287/ospor.6.27)　
　　　　
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◆ Snowfall detection by a newly deployed X-band Doppler radar at Syowa Station, Antarctica ‥‥‥‥‥ 36 – 41
　　Naohiko HIRASAWA (National Institute of Polar Research/The Graduate University for Advanced Studies,
　　SOKENDAI), Hiroyuki KONISHI (Osaka-kyoiku University), Yasushi FUJIYOSHI (Hokkaido University),
　　Kazuhiro SHIBATA (National Institute of Polar Research) and Katsushi IWAMOTO (City of Mombetsu)
　　　　　(doi.org/10.57287/ospor.6.36)　　　
　　
◆ Pack ice observations by UAV and Sentinel-2 Satellite ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 42 – 45
　　Kanichiro MATSUMURA (Faculty of Bioindustry, Tokyo University of Agriculture), Stanley Anak SUAB (Graduate
　　school of Environmental Science, Hokkaido University) and
　　Ram AVTAR (Faculty of Environmental Earth Science, Hokkaido University)
　　　　　(doi.org/10.57287/ospor.6.42)　

◆ A case study: Development of water wave measurement systems under the self-made principle ‥‥ 46 – 50
　　Vitaly KUZIN and Andrey KURKIN (Nizhny Novgorod State Technical University n.a. R.E. Alekseev, Russia)
　　　　　(doi.org/10.57287/ospor.6.46)