Ice-age dust and sea salt

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Glacial/interglacial changes in mineral dust and sea salt records in polar ice cores: sources, transport, deposition

Sea salt and mineral dust records as represented by Na and Ca concentrations, respectively, in Greenland and Antarctic ice cores show pronounced glacial/interglacial variations. For the Last Glacial Maximum (LGM) mineral dust (sea salt) concentrations in Greenland show an increase of a factor of approximately 80 (15) compared to the Holocene and significant shifts by a factor of 15 (5) during D...

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Sea salt in snow on Arctic sea ice and in coastal regions

The origin of sea salt in snow on Arctic sea ice and in coastal regions F. Domine, R. Sparapani, A. Ianniello, and H. J. Beine CNRS, Laboratoire de Glaciologie et Geophysique de l’Environnement, BP 96, 38402 Saint Martin d’Hères cedex, France C.N.R. – IIA, Via Salaria Km 29,3 , I-00016 Monterotondo Scalo, Roma, Italy Received: 19 May 2004 – Accepted: 2 July 2004 – Published: 24 August 2004 Corr...

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Improving Multiyear Sea Ice Concentration Estimates with Sea Ice Drift

Multiyear ice (MYI) concentration can be retrieved from passive or active microwave remote sensing observations. One of the algorithms that combines both observations is the Environmental Canada Ice Concentration Extractor (ECICE). However, factors such as ridging, snow wetness and metamorphism can cause significant changes in brightness temperature and backscatter, leading to misidentification...

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Rapid switch-like sea ice growth and land ice–sea ice hysteresis

[1] Rapid and extensive growth of sea ice cover was suggested to play a major role in the sea ice switch mechanism for the glacial cycles as well as on shorter millennial scales [Gildor and Tziperman, 2000]. This mechanism also predicts a hysteresis between sea ice and land ice, such that land ice grows when sea ice cover is small and withdraws when sea ice cover is more extensive. The switch-l...

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ژورنال

عنوان ژورنال: Nature

سال: 1990

ISSN: 0028-0836,1476-4687

DOI: 10.1038/345393a0