Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2019-09-30 |
タイトル |
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タイトル |
Potential benefit of extra radiosonde observations around the Chukchi Sea for the Alaskan short-range weather forecast |
タイトル |
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言語 |
en |
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タイトル |
Potential benefit of extra radiosonde observations around the Chukchi Sea for the Alaskan short-range weather forecast |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Arctic ocean |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Weather forecasts |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Ship-borne radiosonde observation |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Data assimilation |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Observing system experiment |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
著者 |
Lee, Min-Hee
Kim, Joo-Hong
Song, Hyo-Jong
Inoue, Jun
Sato, Kazutoshi
Yamazaki, Akira
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
In recent years, growing attentions have been paid to the potential benefit of extra observations over the data-sparse Arctic Ocean for weather forecasts. Here we also focus on such a case by targeting the inhabited land area, Alaska. During 2–18 August 2015, ship-borne radiosonde sounding observations were performed every 12 h (except 6-hourly from 12:00 UTC 11 August to 00:00 UTC 14 August) around the Chukchi Sea. To assess the impact of those extra radiosonde observations, two sets of ensemble forecast experiments (CTLf and OSE_Af) were produced, which were respectively initialized by atmospheric reanalysis data without (CTL) and with (OSE_A) additional assimilation of those data. The tropospheric circulation fields are compared to verify their differences in forecast performance. While two forecasts have similar performance in the earlier spin-up period of the analysis-forecast cycle (from 4 to 7 August), their performance tends to diverge in the later period (from 11 to 18 August) due to the accumulated influence on the error reduction in OSE_Af. Among the improved forecasts in OSE_Af, two most outperformed forecasts, each initialized on 00:00 UTC 12 and 00:00 UTC 14, show a notable improvement in predicting the developing trough over Alaska on 16–17 August by suppressing the development of erroneous high anomalies in CTLf. Though the positive impact of single-point observations is limited in a space, our results suggest that enhanced radiosonde profile observations in the data-sparse polar ocean could be beneficial for the forecasts beyond the observational area. |
書誌情報 |
en : Polar Science
巻 21,
p. 124-135,
発行日 2019-09
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ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
18739652 |
DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.polar.2018.12.005 |
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関連名称 |
10.1016/j.polar.2018.12.005 |