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.

 

Before animals, evolution waited eons to inhale
Time to smash the beaker when thinking about oxygen concentrations in water, at the time when animal life first evolved. Oceans stacked oxygen here and depleted it there, as a new novel model demonstrates. It may well toss a wrench into the way we have dated the evolution of the earliest animals.
Publ.Date : Mon, 25 Jul 2016 15:15:11 EDT

Chemical pollution gets to Antarctic marine bird colonies
Latitude is the main factor which determines the organic pollutant concentration in Antarctic giant petrels – emblematic species in the Antarctic and sub-Antarctic regions – according to a new article.
Publ.Date : Thu, 21 Jul 2016 07:27:57 EDT

A recent pause in Antarctic Peninsula warming
The rapid warming of the Antarctic Peninsula, which occurred from the early-1950s to the late 1990s, has paused. Stabilization of the ozone hole along with natural climate variability were significant in bringing about the change. Together these influences have now caused the peninsula to enter a temporary cooling phase. Temperatures remain higher than measured during the middle of the 20th Century and glacial retreat is still taking place.
Publ.Date : Wed, 20 Jul 2016 13:56:41 EDT

Ocean acidification: The limits of adaptation
The most abundant single-celled calcifying alga of the world's oceans, Emiliania huxleyi is basically able to adapt to ocean acidification through evolution. However, the longest evolution experiment that has been conducted with this organism so far shows, that the potential for adaptation is not as large as initially expected. The growth rate under elevated carbon dioxide concentrations has not improved significantly after four years. Calcification was even lower than in today's cells from Emiliania huxleyi.
Publ.Date : Wed, 20 Jul 2016 12:48:39 EDT

Oceans may be large, overlooked source of hydrogen gas
Serpentinized rocks formed near fast-spreading tectonic plates under Earth's seafloor could be a large and previously overlooked source of free hydrogen gas, a new study finds. The finding could have far-ranging implications since scientists believe hydrogen might be the fuel source responsible for triggering life on Earth. And, if it were found in large enough quantities, hydrogen could be used as a clean-burning substitute for fossil fuels today.
Publ.Date : Wed, 20 Jul 2016 12:28:44 EDT

'Perfect storm' brought sea louse epidemic to BC salmon
High ocean temperatures and poor timing of parasite management likely led to an epidemic of sea lice in 2015 throughout salmon farms in British Columbia's Queen Charlotte Strait, a new study has found.
Publ.Date : Wed, 20 Jul 2016 12:28:42 EDT

2016 climate trends continue to break records
Two key climate change indicators -- global surface temperatures and Arctic sea ice extent -- have broken numerous records through the first half of 2016, according to NASA analyses of ground-based observations and satellite data.
Publ.Date : Tue, 19 Jul 2016 14:47:37 EDT

NASA science flights target melting Arctic Sea ice
This summer, with sea ice across the Arctic Ocean shrinking to below-average levels, a NASA airborne survey of polar ice just completed its first flights. Its target: aquamarine pools of melt water on the ice surface that may be accelerating the overall sea ice retreat.
Publ.Date : Tue, 19 Jul 2016 12:39:06 EDT

Ancient rocks reveal how Earth recovered from mass extinction
Scientists have shed light on why life on Earth took millions of years to recover from the greatest mass extinction of all time.
Publ.Date : Tue, 19 Jul 2016 12:30:23 EDT

Climate research: How meltwater from the ice sheets disturbed the climate 10,000 years ago
How will the melting of ice in Greenland affect our climate? In order to gain an idea how that process might look like, researchers have taken a look into the past. In the early Holocene period -- approximately 11,700 to 8,000 years ago -- a large ice sheet melted in North America. By analyzing dripstones in caves (speleothems) and using computer simulations, an international team reconstructed the consequences.
Publ.Date : Tue, 19 Jul 2016 10:54:13 EDT

Oceanographers grow, sequence genome of ocean microbe important to climate change
New light has been shed on a common but poorly understood bacteria known to live in low-oxygen areas in the ocean. By culturing and sequencing the microbe's entire genome, the oceanographers found that it significantly contributes to the removal of life-supporting nitrogen from the water in new and surprising ways.
Publ.Date : Tue, 19 Jul 2016 10:54:07 EDT

Long-awaited breakthrough in the reconstruction of warm climate phases
Scientists have overcome a seeming weakness of global climate models. They had previously not been able to simulate the extreme warm period of the Eocene.
Publ.Date : Mon, 18 Jul 2016 13:30:09 EDT

Researchers create means to monitor anthropogenic global warming in real time
A research team simulated in a computer model, for the first time, the realistic evolution of global mean surface temperature since 1900. The researchers also created a new method by which scientists can measure and monitor the pace of anthropogenic global warming, finding that the contribution of human activities to warming in the surface waters of the Pacific Ocean can be distinguished from natural variability.
Publ.Date : Mon, 18 Jul 2016 13:29:57 EDT

Calcification: Does it pay off in the future ocean?
An international research team has calculated the costs and benefits of calcification for phytoplankton and the impact of climate change on their important role in the world's oceans, a new report explains.
Publ.Date : Fri, 15 Jul 2016 11:41:01 EDT

Ocean warming primary cause of Antarctic Peninsula glacier retreat
A new study has found for the first time that ocean warming is the primary cause of retreat of glaciers on the western Antarctic Peninsula. The Peninsula is one of the largest current contributors to sea-level rise and this new finding will enable researchers to make better predictions of ice loss from this region.
Publ.Date : Thu, 14 Jul 2016 15:24:18 EDT

Climate experts help communities cope with impact of the Indian Monsoon
New work by experts to predict the weather in India could help millions of people prepare for the devastating effects of the country's summer monsoons.
Publ.Date : Thu, 14 Jul 2016 13:51:27 EDT

Closing parts of the ocean to fishing not enough to protect marine ecosystems
Managing a country's entire fisheries is a better strategy than closing parts of the ocean to fishing, a new commentary argues. Marine protected areas have grown in popularity since the early 2000s. Recent examples include an area twice the size of Texas in the central Pacific established in 2014 by President Barack Obama, and a proposal to close 25 percent of the Seychelles' exclusive economic zone, an island nation off Africa's east coast.
Publ.Date : Wed, 13 Jul 2016 14:30:25 EDT

El Niño played a key role in Pacific marine heatwave, as did potentially climate change
The Northeast Pacific's largest marine heatwave on record was at least in part caused by El Niño climate patterns. And unusually warm water events in that ocean could potentially become more frequent with rising levels of greenhouse gases, say scientists.
Publ.Date : Tue, 12 Jul 2016 17:33:18 EDT

Researchers develop novel microscope to study the underwater world
A new microscopic imaging system is revealing a never-before-seen view of the underwater world. Researchers have designed and built a diver-operated underwater microscope to study millimeter-scale processes as they naturally occur on the seafloor.
Publ.Date : Tue, 12 Jul 2016 11:55:12 EDT

Ice algae: The engine of life in the central Arctic Ocean
Algae that live in and under the sea ice play a much greater role for the Arctic food web than previously assumed. In a new study, biologists show that not only animals that live directly under the ice thrive on carbon produced by so-called ice algae.
Publ.Date : Tue, 12 Jul 2016 11:04:38 EDT