Evaluation of Sea Ice Radiative Forcing according to Surface Albedo and Skin Temperature over the Arctic from 1982–2015 SCIE SCOPUS

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Title
Evaluation of Sea Ice Radiative Forcing according to Surface Albedo and Skin Temperature over the Arctic from 1982–2015
Author(s)
Seong, Noh-Hun; Kim, Hyun-Cheol; Choi, Sungwon; Jin, Donghyun; Jung, Daeseong; Sim, Suyoung; Woo, Jongho; Kim, Nayeon; Seo, Minji; Lee, Kyeong-Sang; Han, Kyung-Soo
KIOST Author(s)
Lee, Kyeong-Sang(이경상)
Alternative Author(s)
이경상
Publication Year
2022-06
Abstract
Rapid warming of the Arctic has resulted in widespread sea ice loss. Sea ice radiative forcing (SIRF) is the instantaneous perturbation of Earth’s radiation at the top of the atmosphere (TOA) caused by sea ice. Previous studies focused only on the role of albedo on SIRF. Skin temperature is also closely related to sea ice changes and is one of the main factors in Arctic amplification. In this study, we estimated SIRF considering both surface albedo and skin temperature using radiative kernels. The annual average net-SIRF, which consists of the sum of albedo-SIRF and temperature-SIRF, was calculated as −54.57 ± 3.84 W/m2 for the period 1982–2015. In the net-SIRF calculation, albedo-SIRF and temperature-SIRF made similar contributions. However, the albedo-SIRF changed over the study period by 0.12 ± 0.07 W/m2 per year, while the temperature-SIRF changed by 0.22 ± 0.07 W/m2 per year. The SIRFs for each factor had different patterns depending on the season and region. In summer, rapid changes in the albedo-SIRF occurred in the Kara and Barents regions. In winter, only a temperature-SIRF was observed, and there was little difference between regions compared to the variations in albedo-SIRF. Based on the results of the study, it was concluded that the overall temperature-SIRF is changing more rapidly than the albedo-SIRF. This study indicates that skin temperatures may have a greater impact on the Arctic than albedo in terms of sea ice surface changes.
ISSN
2072-4292
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/42565
DOI
10.3390/rs14112512
Bibliographic Citation
Remote Sensing, v.14, no.11, 2022
Publisher
Multidisciplinary Digital Publishing Institute (MDPI)
Keywords
radiative forcing; sea ice change; radiative kernel; surface albedo; skin temperature; Arctic
Type
Article
Language
English
Document Type
Article
Publisher
Multidisciplinary Digital Publishing Institute (MDPI)
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