Oceanography News

Courtesy of Science Daily

Welcome to Sea and Sky's Oceanography News. Here you can find links to the latest ocean news headlines in the topic of oceanography. Click on any yellow title below to view the full news article. The news article will open in a new browser window. Simply close the browser window when you are finished reading the article to return to the news article listing. You can use the "Click for More" link to go to a page with more news headlines.

 

Northern oceans used to pump carbon dioxide into the atmosphere
Norwegian Sea acted as carbon dioxide source in the past. It pumped the greenhouse gas into the atmosphere instead of absorbing it, as it does today, report scientists.
Publ.Date : Mon, 27 Mar 2017 08:32:46 EDT

Polar front’s oceanographic barrier is not as impermeable for bryozoans of the Southern Ocean as thought
The polar front, an oceanographic barrier between the Austral Ocean and its surrounding water masses, is not the impermeable biogeograpgical barrier it was thought to be, according to a new article.
Publ.Date : Fri, 24 Mar 2017 10:55:20 EDT

Corals die as global warming collides with local weather in the South China Sea
In the South China Sea, a 2°C rise in the sea surface temperature in June 2015 was amplified to produce a 6°C rise on Dongsha Atoll, a shallow coral reef ecosystem, killing approximately 40 percent of the resident coral community within weeks, according to a study.
Publ.Date : Thu, 23 Mar 2017 10:58:24 EDT

Sea ice extent sinks to record lows at both poles
The Arctic sea ice maximum extent and Antarctic minimum extent are both record lows this year. Combined, sea ice numbers are at their lowest point since satellites began to continuously measure sea ice in 1979.
Publ.Date : Wed, 22 Mar 2017 14:31:49 EDT

Upper part of Earth’s magnetic field reveals details of a dramatic past
Satellites have been mapping the upper part of the Earth magnetic field by collecting data for three years and found some amazing features about the Earth’s crust. The result is the release of highest resolution map of this field seen from space to date. This ‘lithospheric magnetic field’ is very weak and therefore difficult to detect and map from space. But with the Swarm satellites it has been possible.
Publ.Date : Wed, 22 Mar 2017 12:28:34 EDT

Dead zones may threaten coral reefs worldwide
Dead zones affect dozens of coral reefs around the world and threaten hundreds more according to a new study. Watching a massive coral reef die-off on the Caribbean coast of Panama, they suspected it was caused by a dead zone -- a low-oxygen area that snuffs out marine life -- rather than by ocean warming or acidification.
Publ.Date : Tue, 21 Mar 2017 12:25:21 EDT

Last remnant of North American ice sheet on track to vanish
The last piece of the ice sheet that once blanketed much of North America is doomed to disappear in the next several centuries, says a new study.
Publ.Date : Mon, 20 Mar 2017 14:38:56 EDT

From entanglement to invasions of alien species: the harm caused by marine litter
Marine litter is a threat to the marine ecosystem, human health and economic activities. A new report sheds light on the many effects of litter in our oceans, and highlights the severity and scale of the issue. The report confirms that plastic items have the highest direct and indirect damaging impact.
Publ.Date : Fri, 17 Mar 2017 08:26:57 EDT

Extensive ice cap once covered sub-Antarctic island of South Georgia
The sub-antarctic island of South Georgia -- famous for its wildlife -- was covered by a massive ice cap during the last ice age, new research indicates.
Publ.Date : Fri, 17 Mar 2017 08:24:46 EDT

The carbon dioxide loop
Marine biologists quantify the carbon consumption of bacterioplankton to better understand the ocean carbon cycle.
Publ.Date : Thu, 16 Mar 2017 14:11:33 EDT

How to conserve polar bears -- and maintain subsistence harvest -- under climate change
A properly-managed subsistence harvest of polar bears can continue under climate change, according to analysis that combines sea-ice forecasts with a polar bear population model.
Publ.Date : Wed, 15 Mar 2017 18:23:38 EDT

China's severe winter haze tied to effects of global climate change
China's severe winter air pollution problems may be worsened by changes in atmospheric circulation prompted by Arctic sea ice loss and increased Eurasian snowfall -- both caused by global climate change.
Publ.Date : Wed, 15 Mar 2017 14:06:52 EDT

Marine recovery after mass extinction was likely delayed by further biotic crises
Biotic crises during the Triassic period may have delayed marine recovery after a mass extinction during the late Permian, according to a new study.
Publ.Date : Wed, 15 Mar 2017 14:06:49 EDT

Soft coral exhibit strikingly different patterns of connectivity around British Isles
Some sea life could be just as disconnected as those divided by mountains or motorways, new research indicates.
Publ.Date : Wed, 15 Mar 2017 12:55:38 EDT

When the sea ice melts, juvenile polar cod may go hungry
Polar cod fulfil a key role in the Arctic food web, as they are a major source of food for seals, whales and seabirds alike. But the polar cod themselves might soon be the hungry ones.
Publ.Date : Wed, 15 Mar 2017 09:45:11 EDT

Cold climates and ocean carbon sequestration
Efficient nutrient consumption by plankton in the Southern Ocean drove carbon sequestration in the deep ocean during the ice ages, a new study suggests.
Publ.Date : Tue, 14 Mar 2017 15:09:16 EDT

Increase in extreme sea levels could endanger European coastal communities
Massive coastal flooding in northern Europe that now occurs once every century could happen every year if greenhouse gas emissions continue to rise, according to a new study.
Publ.Date : Tue, 14 Mar 2017 11:12:54 EDT

Louisiana wetlands struggling with sea-level rise 4 times the global average
Without major efforts to rebuild Louisiana's wetlands, particularly in the westernmost part of the state, there is little chance that the coast will be able to withstand the accelerating rate of sea-level rise, a new study concludes.
Publ.Date : Tue, 14 Mar 2017 08:15:53 EDT

Rapid decline of Arctic sea ice a combination of climate change and natural variability
The dramatic decline of Arctic sea ice in recent decades is caused by a mixture of global warming and a natural, decades-long atmospheric hot spot over Greenland and the Canadian Arctic.
Publ.Date : Mon, 13 Mar 2017 16:08:27 EDT

Looming crisis of the much decreased fresh-water supply to Egypt's Nile delta
A multi-year study of Egypt's Nile Delta places the country's major breadbasket at serious risk. The soil-rich delta evolved as the result of natural conditions involving the Nile's fresh water flow and transport of sediment northward from Ethiopia, across the Sudan and Egypt to the Mediterranean.
Publ.Date : Mon, 13 Mar 2017 13:50:06 EDT