Interannual Variation of sea ice typea and relationships with atr temmperarure in the Sea of Okhotsuk during 1988-1997

• Main Authors: TATEYAMA, Kazutaka, ENOMOTO, Hiroyuki, SHIRASAKI, Kazuyuki, NISHIO, Fumihiko
• Language: English
• Published: オホーツク氷海研究グループ
• Subjects: Okhotsk; okhotsk sea; Sea ice
• Online Access: https://kitami-it.repo.nii.ac.jp/record/7422/files/8650824-2.pdf

A new algorithm for microwave radiometer was developed to discriminate ice types in the Sea of Okhotsk. Although a trend of decreasing sea ice area in the Sea of Okhotsk has been observed and it was 29.4 % per decade since 1989, analysis of ice types showed that the fraction of thin ice area to the total sea ice area had increased 15.1% per decade. This indicates thinning of ice during 1988-1997. The fraction of thin ice area was large when the winter temperature was high. The new ice analysis was applied also to the daily changes of ice types in the ice tongue which was observed in the northern part of Okhotsk Sea. As the ice tongue was isolated from other ice distribution, in situ growth and decay of sea ice can be analyzed. application/pdf journal article