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Impact of observation-based snow albedo parameterization on global ocean simulation results
https://nipr.repo.nii.ac.jp/records/16018
https://nipr.repo.nii.ac.jp/records/1601882f7c3f9-b4a3-405f-a341-471d319eada8
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2020-06-24 | |||||
タイトル | ||||||
タイトル | Impact of observation-based snow albedo parameterization on global ocean simulation results | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Impact of observation-based snow albedo parameterization on global ocean simulation results | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Snow albedo | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | OGCM | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Arctic ocean | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Southern ocean | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Sea ice model | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Toyoda, Takahiro
× Toyoda, Takahiro× Aoki, Teruo× Niwano, Masashi× Tanikawa, Tomonori× Urakawa, L. Shogo× Tsujino, Hiroyuki× Nakano, Hideyuki× Sakamoto, Kei× Hirose, Nariaki× Yamanaka, Goro |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Albedo parameterization is of fundamental importance for accurate representation of high-latitude climate variability by modeling studies. Field observations show that near-infrared snow albedo decreases dramatically when surface air temperature exceeds −2 °C. This can influence reproduction of sea ice simulations taking into consideration the importance of the drastic change in albedo in early melt season for the seasonal change of sea ice extent. Therefore, we conducted global ocean data-assimilative simulation experiments using a modified snow albedo parameterization. The modified parameterization reduced the albedo directly and achieved a comparable indirect reduction via changes in the modeled snow and sea ice distributions (ice–albedo feedback). As a result, sea ice thickness was reduced by more than 0.4–1 cm over most of the central Arctic Ocean. Sea ice velocities were also reduced by enhanced ocean drag with weakened surface ocean circulation in the Beaufort Gyre. In the Southern Ocean, the modified parameterization caused snow thicknesses to be decreased by up to 2 cm in the Weddell Sea. These impacts, which were generally larger than the spread of ensemble experiment results and therefore robust, at least in our model, provide useful information for quantifying the results of albedo modification in climate modeling studies. | |||||
書誌情報 |
en : Polar Science 巻 24, p. 100521, 発行日 2020-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.polar.2020.100521 | |||||
関連名称 | 10.1016/j.polar.2020.100521 |