منابع مشابه
The Meteorological Aspects of Ice Cover on the Great Lakes*
The formation and break-up of ice on the Great Lakes as observed by regular ice reconnaissance flights conducted by the Meteorological Service of Canada is discussed in terms of the meteorological parameters involved. Ice cover on the individual lakes over the past four years is correlated with the winter temperature regime and an index of the heat stored in each lake using the concept of cumul...
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Boreal lakes can be ice covered for a substantial portion of the year at which time methane (CH4) can accumulate below ice. The amount of CH4 emitted at ice melt is partially determined by the interplay between CH4 production and CH4 oxidation, performed by methane-oxidizing bacteria (MOB). Yet the balance between oxidation and emission and the potential for CH4 oxidation in various lakes durin...
متن کاملEstimating methane emissions from northern lakes using ice- bubble surveys
The magnitude and variability in methane (CH4) emissions from lakes are uncertain due to limitations in methods for quantifying the patchiness of ebullition (bubbling). We present a field method to estimate an important and highly uncertain source: ebullition from northern lakes. We defined four classes of CH4 bubble clusters trapped in lake ice representing distinct types of biogenic ebullitio...
متن کاملSatellite SAR Remote Sensing of Great Lakes Ice Cover, Part 2. Ice Classification and Mapping
During the 1997 winter season, shipborne polarimetric backscatter measurements of Great Lakes (freshwater) ice types using the Jet Propulsion Laboratory C-band scatterometer, together with surface-based ice physical characterization measurements and environmental parameters, were acquired concurrently with Earth Resource Satellite 2 (ERS-2) and RADARSAT Synthetic Aperture Radar (SAR) data. This...
متن کاملModelling the Early Weichselian Eurasian Ice Sheets: role of ice shelves and influence of ice-dammed lakes
Modelling the Early Weichselian Eurasian Ice Sheets: role of ice shelves and influence of ice-dammed lakes V. Peyaud, C. Ritz, and G. Krinner Laboratoire de Glaciologie et de Géophysique de l’Environnement, Université Joseph Fourier 54, rue Molière, Domaine Universitaire, BP 96, 38402 Saint Martin d’Hères Cedex, France Received: 9 November 2006 – Accepted: 13 December 2006 – Published: 26 Janua...
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ژورنال
عنوان ژورنال: Nature Climate Change
سال: 2011
ISSN: 1758-678X,1758-6798
DOI: 10.1038/nclimate1055