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Tag: Ocean

Arctic Ocean
Left panel: Schematic of the Arctic Ocean, central basin (Canada and Eurasian basins) and arctic continental shelves (with approximate boundaries for each Arctic Ocean coastal sea), and major rivers draining into the re...
27 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
The Arctic Ocean
The Arctic Ocean experiences much less exchange with the atmosphere than other oceans; momentum exchange (wind drag), heat exchange and freshwater exchange are limited due to the sea ice cover.
01 Oct 2009 - by Laura Margueritte
South West Greenland Ocean Temperature
Initially, meltwater was assumed to be the prime cause of glacier acceleration, making its way to the ground beneath ice sheets, lubricating it and causing the glaciers to flow more quickly to the sea.
27 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Arctic Ocean surface Temperatures
Consistent with the rapid retreat of sea ice, the surface waters of the Arctic Ocean have been warming in recent years, because declining sea-ice cover allows the water to absorb more heat from the sun.
27 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Uptake of Carbon Dioxide from the Atmosphere
Atmosphere-ocean exchanges of carbon.
27 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Surface Temperature
At the regional, ocean basin scale, the area between the insulating sea-ice cover and the open ocean (known as the ice margin) is characterized by particularly strong temperature gradients during winter, favoring the dev...
27 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Simulated projections for Polar cod distribution with global warming
Polar cod (Boreogadus saida) was found to be sensitive to the warming scenarios and the model predicted that it would be extirpated in most of its range even under the milder warming scenario. This is due to its occurren...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Simulated projections for Polar cod distribution with global warming
Polar cod (Boreogadus saida) was found to be sensitive to the warming scenarios and the model predicted that it would be extirpated in most of its range even under the milder warming scenario. This is due to its occurren...
01 May 2010 - by Hugo Ahlenius, UNEP/GRID-Arendal
Coldwater coral reefs, distribution
Scientists are just beginning to learn about the many species in the remote, deep waters of the polar oceans. Corals, for example, are not limited to the warm, shallow waters of the tropics. They also exist in many cold,...
21 May 2010 - by Hugo Ahlenius, UNEP/GRID-Arendal
Red king crab native and invasive distribution
The red king crab is native to the Okhotsk and Japan Seas, the Bering Sea, and the northern Pacific Ocean, where it is an important economic resource. In Alaskan waters, red king crabs have historically been the second m...
13 Oct 2010 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Vegetation and land cover in the Arctic
The land mass in the Arctic - Greenland and parts of Canada, Alaska, Russia and the Nordic countries - surrounds the Arctic Ocean. In the low Arctic, down to the temperate regions, the taiga coniferous forests represents...
13 Oct 2010 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic, topography and bathymetry (topographic map)
The Arctic represents the northermost area of the World, the Arctic Ocean and the land areas that surrounds it. The region is characterized but cold temperatures, and ice and snow. The summers are short, but with long pe...
01 Oct 2010 - by Hugo Ahlenius, UNEP/GRID-Arendal
Sea level rise caused by the melting of mountain and subpolar glaciers
Another process that results in rising sea levels is the addition of water mass from land ice. Melting glaciers and ice caps, as well as the vast ice sheets of Greenland and Antarctica, raise sea-levels if their water ma...
22 Nov 2010 - by Viktor Novikov, UNEP/GRID-Arendal
Change in sea level as a result of changes in ocean density and circulation
Changes in sea levels resulting exclusively from changes in ocean density and circulation patterns, results of atmosphere-ocean general circulation models (AOGCM) for climate change scenario A1B (this scenario assumes fu...
01 Oct 2010 - by Nieves López Izquierdo, Associate Consultant UNEP/GRID-Arendal
Expected impacts of climate change in 2050
It is expected that by 2050 there will be threats to ecosystem services in the Andes and Mexico, in the Central American and Caribbean sub-regions, and in southeastern Brazil, while there will be negative effects on fish...
22 Nov 2010 - by Nieves López Izquierdo, Associate Consultant UNEP/GRID-Arendal
Climate impacts of El Niño Phenomenon in Latin America and the Caribbean
El Niño Southern Oscillation (ENSO) is a natural phenomenon that has occurred for centuries. Ocean and atmospheric conditions in the Pacific tend to fluctuate between El Niño (warming) and a drop in temperature in the tr...
17 May 2005 - by UNEP/GRID-Arendal
Changes to Coconut Beach (Dominica) after the 1995 hurricane season
During a period between May 1994 to September 1995 the profile of the beach dramatically changed. A rising sea level combined with more storms, washed away vulnerable beaches. With the sand gone, the coast is more vulner...
17 May 2005 - by Viktor Novikov, UNEP/GRID-Arendal
El Niño-Southern Oscillation (ENSO) Phenomenon
El Niño describes 'the warm phase of a naturally occurring sea surface temperature oscillation in the tropical Pacific Ocean', and southern oscillation refers to 'a seesaw shift in surface air pressure at Darwin, Austral...
17 May 2005 - by Delphine Digout, UNEP/GRID-Arendal
ENSO impact on Southern Africa
El Niño describes 'the warm phase of a naturally occurring sea surface temperature oscillation in the tropical Pacific Ocean', southern oscillation refers to 'a seesaw shift in surface air pressure at Darwin, Australia a...
17 May 2005 - by Delphine Digout, UNEP/GRID-Arendal
Northern Atlantic Ocean: maritime delimitation and disputes
Overview of the geopolitical situation in the European sector of the Arctic. Despite ongoing discussions, Russia and Norway continue to dispute their maritime limits in the Barent's Sea. The sea is relevant for shipping,...
21 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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