气候变化领域集成服务门户(CCPortal): Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals

CCPortal

DOI	10.1073/pnas.0800790105
	Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals
	Charrassin J.-B.; Hindell M.; Rintoul S.R.; Roquet F.; Sokolov S.; Biuw M.; Costa D.; Boehme L.; Lovell P.; Coleman R.; Timmermann R.; Meijers A.; Meredith M.; Park Y.-H.; Bailleul F.; Goebel M.; Tremblay Y.; Bost C.-A.; McMahon C.R.; Field I.C.; Fedak M.A.; Guinet C.
发表日期	2008
ISSN	0027-8424
起始页码	11634
结束页码	11639
卷号	105 期号:33
英文摘要	Polar regions are particularly sensitive to climate change, with the potential for significant feedbacks between ocean circulation, sea ice, and the ocean carbon cycle. However, the difficulty in obtaining in situ data means that our ability to detect and interpret change is very limited, especially in the Southern Ocean, where the ocean beneath the sea ice remains almost entirely unobserved and the rate of sea-ice formation is poorly known. Here, we show that southern elephant seals (Mirounga leonina) equipped with oceanographic sensors can measure ocean structure and water mass changes in regions and seasons rarely observed with traditional oceanographic platforms. In particular, seals provided a 30-fold increase in hydrographic profiles from the sea-ice zone, allowing the major fronts to be mapped south of 60°S and sea-ice formation rates to be inferred from changes in upper ocean salinity. Sea-ice production rates peaked in early winter (April-May) during the rapid northward expansion of the pack ice and declined by a factor of 2 to 3 between May and August, in agreement with a three-dimensional coupled ocean-sea-ice model. By measuring the high-latitude ocean during winter, elephant seals fill a "blind spot" in our sampling coverage, enabling the establishment of a truly global ocean-observing system. © 2008 by The National Academy of Sciences of the USA.
英文关键词	Antarctic Circumpolar Current; Instrumentation; Marine predators; Ocean observation; Sea-ice modeling
语种	英语
scopus关键词	article; carbon cycle; elephant; hydrography; ocean current; oceanography; priority journal; salinity; sea ice; thermodynamics; water structure; Animals; Ice; Seals, Earless; Seawater; Temperature; Mirounga; Mirounga leonina
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159173
作者单位	Charrassin, J.-B., Unite Sci. du Mus. 402/Lab. d'Oceanographie et du Climat: Experimentation et Approches Numeriques, Département Milieux et Peuplements Aquatiques, Muséum National d'Histoire Naturelle, 43 rue Cuvier, 75231 Paris Cedex 05, France; Hindell, M., Antarctic Wildlife Research Unit, School of Zoology, University of Tasmania, P.O. Box 252-05, Hobart, TAS 7001, Australia; Rintoul, S.R., Wealth from Oceans National Research Flagship and Antarctic Climate, Ecosystems Cooperative Research Centre, Commonwealth Scientific and Industrial Research Organization, Hobart, TAS 7001, Australia; Roquet, F., Unite Sci. du Mus. 402/Lab. d'Oceanographie et du Climat: Experimentation et Approches Numeriques, Département Milieux et Peuplements Aquatiques, Muséum National d'Histoire Naturelle, 43 rue Cuvier, 75231 Paris Cedex 05, France; Sokolov, S., Wealth from Oceans National Research Flagship and Antarctic Climate, Ecosystems Cooperative Research Centre, Commonwealth Scientific and Industrial Research Organizati...
推荐引用方式 GB/T 7714	Charrassin J.-B.,Hindell M.,Rintoul S.R.,et al. Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals[J],2008,105(33).
APA	Charrassin J.-B..,Hindell M..,Rintoul S.R..,Roquet F..,Sokolov S..,...&Guinet C..(2008).Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals.Proceedings of the National Academy of Sciences of the United States of America,105(33).
MLA	Charrassin J.-B.,et al."Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals".Proceedings of the National Academy of Sciences of the United States of America 105.33(2008).