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Application of the PIP25 index for reconstructing spring sea ice concentration in the western Arctic Ocean

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Title
Application of the PIP25 index for reconstructing spring sea ice concentration in the western Arctic Ocean
Other Titles
서북극해 봄철 해빙농도 복원을 위한 PIP25 인덱스 적용 연구
Authors
Kim, Jung-Hyun
Kim, Dahae
Jun, Sang-Yoon
Joe, Young Jin
Ahn, Youngkyu
Park, Kwangkyu
Nam, Seung-il
Keywords
PIP25; Spring sea ice concentration; Western Arctic Ocean
Issue Date
2020
Citation
Kim, Jung-Hyun, et al. 2020. Application of the PIP25 index for reconstructing spring sea ice concentration in the western Arctic Ocean. KOQUA(The Korean Quaternary Association) 2020 Autumn Conference. Online. 2020.12.17~2020.12.17.
Abstract
Arctic sea ice plays an important role in the global climate system via the sea ice-albedo feedback. Reliable satellite-derived records of the Arctic sea-ice extent have only been available since 1979. Hence, reconstructions of sea ice conditions on time scales beyond satellite measurements are necessary to understand natural, longer-term sea ice changes and their driving mechanisms under various climate forcings. In this study, we investigated 53 surface sediments collected from the Chukchi Sea and the East Siberian Sea during the Arctic cruises with RV Araon from 2010 to 2019. We aimed to assess the applicability of the PIP25 index, based primarily on the use of HBI III as a semiquantitative sea ice proxy in the western Arctic Ocean. Our preliminary results showed the presence of IP25 in all sediment samples investigated, confirming the occurrence of seasonal sea ice in the study area. Nonetheless, further works are necessary to establish a regional balance factor c value, a term used to calculate the PIP25 index in the western Arctic Ocean.
URI
https://repository.kopri.re.kr/handle/201206/12359
Conference Name
KOQUA(The Korean Quaternary Association) 2020 Autumn Conference
Conference Place
Online
Conference Date
2020.12.17~2020.12.17
Appears in Collections  
2020-2020, Based Research on International Joint Drilling for Reconstructing Evolution and Glacial History of the Arctic Ocean (20-20) / Nam, Seung-il (PE20350)
2020-2020, RAPID (Reconstruction of Arctic sea ice change during the Holocene by paleoclimate data-model comparison) (20-20) / Kim, Jung-Hyun (PE20410)
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