Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone

Abstract Ice-albedo feedback due to the albedo contrast between water and ice is a major factor in seasonal sea ice retreat, and has received increasing attention with the Arctic Ocean shifting to a seasonal ice cover. However, quantitative evaluation of such feedbacks is still insufficient. Here we...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Haruhiko Kashiwase, Kay I. Ohshima, Sohey Nihashi, Hajo Eicken
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/845d663f1df24bc397b513047721d59c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:845d663f1df24bc397b513047721d59c
record_format	dspace
spelling	oai:doaj.org-article:845d663f1df24bc397b513047721d59c2021-12-02T16:06:35ZEvidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone10.1038/s41598-017-08467-z2045-2322https://doaj.org/article/845d663f1df24bc397b513047721d59c2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08467-zhttps://doaj.org/toc/2045-2322Abstract Ice-albedo feedback due to the albedo contrast between water and ice is a major factor in seasonal sea ice retreat, and has received increasing attention with the Arctic Ocean shifting to a seasonal ice cover. However, quantitative evaluation of such feedbacks is still insufficient. Here we provide quantitative evidence that heat input through the open water fraction is the primary driver of seasonal and interannual variations in Arctic sea ice retreat. Analyses of satellite data (1979–2014) and a simplified ice-upper ocean coupled model reveal that divergent ice motion in the early melt season triggers large-scale feedback which subsequently amplifies summer sea ice anomalies. The magnitude of divergence controlling the feedback has doubled since 2000 due to a more mobile ice cover, which can partly explain the recent drastic ice reduction in the Arctic Ocean.Haruhiko KashiwaseKay I. OhshimaSohey NihashiHajo EickenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Haruhiko Kashiwase Kay I. Ohshima Sohey Nihashi Hajo Eicken Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone
description	Abstract Ice-albedo feedback due to the albedo contrast between water and ice is a major factor in seasonal sea ice retreat, and has received increasing attention with the Arctic Ocean shifting to a seasonal ice cover. However, quantitative evaluation of such feedbacks is still insufficient. Here we provide quantitative evidence that heat input through the open water fraction is the primary driver of seasonal and interannual variations in Arctic sea ice retreat. Analyses of satellite data (1979–2014) and a simplified ice-upper ocean coupled model reveal that divergent ice motion in the early melt season triggers large-scale feedback which subsequently amplifies summer sea ice anomalies. The magnitude of divergence controlling the feedback has doubled since 2000 due to a more mobile ice cover, which can partly explain the recent drastic ice reduction in the Arctic Ocean.
format	article
author	Haruhiko Kashiwase Kay I. Ohshima Sohey Nihashi Hajo Eicken
author_facet	Haruhiko Kashiwase Kay I. Ohshima Sohey Nihashi Hajo Eicken
author_sort	Haruhiko Kashiwase
title	Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone
title_short	Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone
title_full	Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone
title_fullStr	Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone
title_full_unstemmed	Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone
title_sort	evidence for ice-ocean albedo feedback in the arctic ocean shifting to a seasonal ice zone
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/845d663f1df24bc397b513047721d59c
work_keys_str_mv	AT haruhikokashiwase evidenceforiceoceanalbedofeedbackinthearcticoceanshiftingtoaseasonalicezone AT kayiohshima evidenceforiceoceanalbedofeedbackinthearcticoceanshiftingtoaseasonalicezone AT soheynihashi evidenceforiceoceanalbedofeedbackinthearcticoceanshiftingtoaseasonalicezone AT hajoeicken evidenceforiceoceanalbedofeedbackinthearcticoceanshiftingtoaseasonalicezone
_version_	1718384973103235072

Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone

Ejemplares similares