Spring and Summer Sea Ice Controls Interannual Variation in Top-of-Atmosphere Upward Shortwave Flux over the Antarctic.
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| Title: | Spring and Summer Sea Ice Controls Interannual Variation in Top-of-Atmosphere Upward Shortwave Flux over the Antarctic. |
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| Authors: | Amma, Michinari1 (AUTHOR) amichina@umich.edu, Hayasaka, Tadahiro1 (AUTHOR) |
| Source: | Journal of Climate. Sep2025, Vol. 38 Issue 18, p4723-4737. 15p. |
| Subjects: | Sea ice, Cloudiness, Radiation, Antarctic ice, Solar radiation, Seasonal temperature variations, Upper atmosphere |
| Geographic Terms: | Antarctica |
| Abstract: | Recent sea ice changes in the Antarctic affect the radiation budget at the top of the atmosphere (TOA), especially the TOA upward shortwave radiation (TOA SW↑). The effect of sea ice changes on TOA SW↑ is also affected by clouds. However, there is no quantitative evaluation of the effect of sea ice and clouds on the interannual variation in TOA SW↑ over the whole Antarctic. Focusing on a monthly scale, we investigated the interannual variation in TOA SW↑ over the Antarctic using the Clouds and the Earth's Radiant Energy System (CERES) observation from July 2000 to June 2023. The annual mean TOA SW↑ over the Antarctic showed a decreasing trend (−0.7 W m−2 decade−1) with relatively large interannual variability. Sea ice cover from November to January mainly explained TOA SW↑ variability, but clouds over ocean from November to January partially attenuated the effect of sea ice cover. Unlike over ocean, TOA SW↑ variability over the Antarctic was less related to TOA SW↑ variability over land. The annual mean TOA SW↑ over land showed relatively small interannual variations. These interannual variations were mainly related to cloud fraction from October to December, which was associated with the Antarctic Oscillation. Our results suggest that the amount of sea ice melt and the cloud effect in spring and summer are essential factors for the interannual variation in TOA SW↑ over the Antarctic. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 187865257 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Spring and Summer Sea Ice Controls Interannual Variation in Top-of-Atmosphere Upward Shortwave Flux over the Antarctic. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Amma%2C+Michinari%22">Amma, Michinari</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> amichina@umich.edu</i><br /><searchLink fieldCode="AR" term="%22Hayasaka%2C+Tadahiro%22">Hayasaka, Tadahiro</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Climate%22">Journal of Climate</searchLink>. Sep2025, Vol. 38 Issue 18, p4723-4737. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Sea+ice%22">Sea ice</searchLink><br /><searchLink fieldCode="DE" term="%22Cloudiness%22">Cloudiness</searchLink><br /><searchLink fieldCode="DE" term="%22Radiation%22">Radiation</searchLink><br /><searchLink fieldCode="DE" term="%22Antarctic+ice%22">Antarctic ice</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+radiation%22">Solar radiation</searchLink><br /><searchLink fieldCode="DE" term="%22Seasonal+temperature+variations%22">Seasonal temperature variations</searchLink><br /><searchLink fieldCode="DE" term="%22Upper+atmosphere%22">Upper atmosphere</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Antarctica%22">Antarctica</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Recent sea ice changes in the Antarctic affect the radiation budget at the top of the atmosphere (TOA), especially the TOA upward shortwave radiation (TOA SW↑). The effect of sea ice changes on TOA SW↑ is also affected by clouds. However, there is no quantitative evaluation of the effect of sea ice and clouds on the interannual variation in TOA SW↑ over the whole Antarctic. Focusing on a monthly scale, we investigated the interannual variation in TOA SW↑ over the Antarctic using the Clouds and the Earth's Radiant Energy System (CERES) observation from July 2000 to June 2023. The annual mean TOA SW↑ over the Antarctic showed a decreasing trend (−0.7 W m−2 decade−1) with relatively large interannual variability. Sea ice cover from November to January mainly explained TOA SW↑ variability, but clouds over ocean from November to January partially attenuated the effect of sea ice cover. Unlike over ocean, TOA SW↑ variability over the Antarctic was less related to TOA SW↑ variability over land. The annual mean TOA SW↑ over land showed relatively small interannual variations. These interannual variations were mainly related to cloud fraction from October to December, which was associated with the Antarctic Oscillation. Our results suggest that the amount of sea ice melt and the cloud effect in spring and summer are essential factors for the interannual variation in TOA SW↑ over the Antarctic. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1175/JCLI-D-24-0206.1 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 4723 Subjects: – SubjectFull: Sea ice Type: general – SubjectFull: Cloudiness Type: general – SubjectFull: Radiation Type: general – SubjectFull: Antarctic ice Type: general – SubjectFull: Solar radiation Type: general – SubjectFull: Seasonal temperature variations Type: general – SubjectFull: Upper atmosphere Type: general – SubjectFull: Antarctica Type: general Titles: – TitleFull: Spring and Summer Sea Ice Controls Interannual Variation in Top-of-Atmosphere Upward Shortwave Flux over the Antarctic. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Amma, Michinari – PersonEntity: Name: NameFull: Hayasaka, Tadahiro IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 09 Text: Sep2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 08948755 Numbering: – Type: volume Value: 38 – Type: issue Value: 18 Titles: – TitleFull: Journal of Climate Type: main |
| ResultId | 1 |
