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Full-Text Articles in Physical Sciences and Mathematics
The Spatial Distribution Of Solar Radiation Under A Melting Arctic Sea Ice Cover, Karen E. Frey, Donald K. Perovich, Bonnie Light
The Spatial Distribution Of Solar Radiation Under A Melting Arctic Sea Ice Cover, Karen E. Frey, Donald K. Perovich, Bonnie Light
Geography
The sea ice cover of the Chukchi and Beaufort Seas is currently undergoing a fundamental shift from multiyear ice to first-year ice. Field observations of sea ice physical and optical properties were collected in this region during June-July 2010, revealing unexpectedly complex spatial distributions of solar radiation under the melt-season ice cover. Based on our optical measurements of first-year ice, we found the under-ice light field in the upper ocean to be spatially heterogeneous and dependent on wavelength, ice thickness, and the areal and geometric distribution of melt ponded and bare ice surfaces. Much of the observed complexity in radiation …
A Synthesis Of The Long-Term Paleoclimatic Evolution Of The Arctic, Matthew O'Regan, Christopher J. Williams, Karen E. Frey, Martin Jakobsson
A Synthesis Of The Long-Term Paleoclimatic Evolution Of The Arctic, Matthew O'Regan, Christopher J. Williams, Karen E. Frey, Martin Jakobsson
Geography
Since the Arctic Ocean began forming in the Early Cretaceous 112-140 million years ago, the Arctic region has undergone profound oceanographic and paleoclimatic changes. It has evolved from a warm epicontinental sea to its modern state as a cold isolated ocean with extensive perennial sea ice cover. Our understanding of the long-term paleoclimate evolution of the Arctic remains fragmentary but has advanced dramatically in the past decade through analysis of new marine and terrestrial records, supplemented by important insights from paleoclimate models. Improved understanding of how these observations fit into the long-term evolution of the global climate system requires additional …