Oceans and Seas

State of the Climate in Asia 2024

The World Meteorological Organization’s State of the Climate in Asia 2024 report warns that the region is warming nearly twice as fast as the global average, driving more extreme weather and posing serious threats to lives, ecosystems, and economies. In 2024, Asia experienced its warmest or second warmest year on …

Climate engineering by mimicking natural dust climate control: the iron salt aerosol method

Power stations, ships and air traffic are among the most potent greenhouse gas emitters and are primarily responsible for global warming. Iron salt aerosols (ISAs), composed partly of iron and chloride, exert a cooling effect on climate in several ways. This article aims firstly to examine all direct and indirect …

Marine origin of retroviruses in the early Palaeozoic Era

Very little is known about the ancient origin of retroviruses, but owing to the discovery of their ancient endogenous viral counterparts, their early history is beginning to unfold. Here we report 36 lineages of basal amphibian and fish foamy-like endogenous retroviruses (FLERVs). Phylogenetic analyses reveal that ray-finned fish FLERVs exhibit …

Newly discovered deep-branching marine plastid lineages are numerically rare but globally distributed

Ocean surface warming is resulting in an expansion of stratified, low-nutrient environments, a process referred to as ocean desertification. A challenge for assessing the impact of these changes is the lack of robust baseline information on the biological communities that carry out marine photosynthesis. Phytoplankton perform half of global biological …

Regional adaptation defines sensitivity to future ocean acidification

Physiological responses to temperature are known to be a major determinant of species distributions and can dictate the sensitivity of populations to global warming. In contrast, little is known about how other major global change drivers, such as ocean acidification (OA), will shape species distributions in the future. Here, by …

Sub-ice-shelf sediments record history of twentieth-century retreat of Pine Island Glacier

The West Antarctic Ice Sheet is one of the largest potential sources of rising sea levels. Over the past 40 years, glaciers flowing into the Amundsen Sea sector of the ice sheet have thinned at an accelerating rate, and several numerical models suggest that unstable and irreversible retreat of the …

European Commission, UN Environment step up cooperation to protect the world's oceans

Protecting the world's oceans from the rising threats of pollution, marine litter and overfishing will be a top cooperation priority for the European Commission and the UN Environment next year. European Commissioner for the Environment, Maritime Affairs and Fisheries Karmenu Vella and UN Environment head Erik Solheim agreed that safeguarding …

Hairy crabs and deep-sea worms: 6 new species discovered in undersea hot springs

At hydrothermal vents in Longqi or ‘Dragon’s Breath’, 1,243 miles southeast of Madagascar, scientists have discovered unique marine life, including six species new to science. Thousands of hydrothermal vents — chimney-like structures spewing hot water clouds of minerals and nutrients — dot the ocean floor, buzzing with marine life of …

Ocean heat drives rapid basalt melt of the Totten ice shelf

Mass loss from the West Antarctic ice shelves and glaciers has been linked to basal melt by ocean heat flux. The Totten Ice Shelf in East Antarctica, which buttresses a marine-based ice sheet with a volume equivalent to at least 3.5 m of global sea-level rise, also experiences rapid basal …

Global warming-induced upper-ocean freshening and the intensification of super typhoons

Super typhoons (STYs), intense tropical cyclones of the western North Pacific, rank among the most destructive natural hazards globally. The violent winds of these storms induce deep mixing of the upper ocean, resulting in strong sea surface cooling and making STYs highly sensitive to ocean density stratification. Although a few …

The hostile ocean that slowed climate change

The waters of the Southern Ocean have absorbed much of the excess heat and carbon generated by humanity. Original Source

Study sees limited impact of climate change on fisheries along Oman coast

Muscat: Global warming is less of a concern to the fisheries industries along the Omani coast during the summer season of June through September than previously thought, a new study has revealed. The study, which was published in Geophysical Research Letters, an earth sciences journal, was conducted by researchers from …

Lessons from two high CO2 worlds – future oceans and intensive aquaculture

Exponentially rising CO2 (currently ~400 μatm) is driving climate change and causing acidification of both marine and freshwater environments. Physiologists have long known that CO2 directly affects acid–base and ion regulation, respiratory function and aerobic performance in aquatic animals. More recently, many studies have demonstrated that elevated CO2 projected for …

An ocean without oxygen' New IOC-UNESCO working group tackles the issue of deoxygenation

The ocean is losing its breath! The Global Ocean Oxygen Network (GO2NE), a new working group of the Intergovernmental Oceanographic Commission (IOC) of UNESCO, seeks to integrate worldwide research efforts on deoxygenation ' the decline in oxygen concentrations ' in the open ocean and coastal areas, and study the progression …

Scientists triple known types of viruses in world’s oceans

The world's oceans teem with scientific mystery, unknowns that could prove to be tools that will one day protect the planet from global warming. Today, researchers report they've tripled the known types of viruses living in waters around the globe, and now have a better idea what role they play …

UK to double marine protection areas around overseas territories

More than £20m will be invested in doubling the area of ocean under marine protection around British overseas territories, the Government has announced today (15 September). “Protecting four million square kilometres of ocean is a fantastic achievement, converting our historic legacy into modern environmental success,” Duncan said. Moreover, an additional …

Africa leads in the pursuit of a sustainable ocean economy

African coastal countries and Small Island Developing States (SIDS) rely heavily on fishing and related employment, yet these livelihoods are all under threat due to declining fish stocks. Coastal erosion and shoreline habitat loss have taken a toll on poor coastal communities that are the most vulnerable to climate change …

Prolonged California aridity linked to climate warming and Pacific sea surface temperature

California has experienced a dry 21st century capped by severe drought from 2012 through 2015 prompting questions about hydroclimatic sensitivity to anthropogenic climate change and implications for the future. We address these questions using a Holocene lake sediment record of hydrologic change from the Sierra Nevada Mountains coupled with marine …

Increased ocean acidification is due to human activities, say scientists

"The ocean has been the only true sink for anthropogenic emissions since the industrial revolution," says MIT graduate student Sophie Chu, pictured here. "Right now, it stores about 1/4 to 1/3 of the anthropogenic emissions from the atmosphere. We're expecting at some point the storage will slow down." Credit: Zhaohui …

Global scientists warn human-caused warming making oceans sick, threatening food security

HONOLULU – Global warming is making the oceans sicker than ever before, spreading disease among animals and humans and threatening food security across the planet, a major scientific report said on Monday. The findings, based on peer-reviewed research, were compiled by 80 scientists from 12 countries, experts said at the …

Global scientists warn human-caused warming making oceans sick, threatening food security

HONOLULU – Global warming is making the oceans sicker than ever before, spreading disease among animals and humans and threatening food security across the planet, a major scientific report said on Monday. The findings, based on peer-reviewed research, were compiled by 80 scientists from 12 countries, experts said at the …

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