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 …
Tourism was identified in the late 1980s as a sector with major potential for driving economic development in Zanzibar and has since grown enormously from roughly 19,000 annual visitors in 1985 to well over 200,000 by 2007. Although tourism is now one of the most important sectors of the economy, …
Climate-driven Oxygen Minimum Zone (OMZ) expansions in the geologic record provide an opportunity to characterize the spatial and temporal scales of OMZ change. Here we investigate OMZ expansion through the global-scale warming event of the most recent deglaciation (18-11 ka), an event with clear relevance to understanding modern anthropogenic climate …
Hundreds of robotic instruments deployed across the South Pacific have begun to reveal dramatic new insights into the impact of climate change upon oceans in our corner of the world. One of the world's leading oceanographers, Professor Dean Roemmich, is basing himself in Wellington as he analyses the earliest indicators …
The Dead Sea has attracted visitors for thousands of years who come to float in its salty waters and reap its reported health benefits. But the attraction's days could be numbered after experts discovered the sea's water level is dropping by an average of one metre every year. The drop …
The proliferation of a number of pressures affecting the ocean is leading to a growing concern that the state of the ocean is compromised, which is driving society into pessimism. Ocean calamities are disruptive changes to ocean ecosystems that have profound impacts and that are widespread or global in scope. …
Increasing CO2 atmospheric levels lead to increasing ocean acidification, thereby enhancing calcium carbonate dissolution of calcifying species. We gathered peer-reviewed experimental data on the effects of acidified seawater on calcifying species growth, reproduction, and survival. The data were used to derive species-specific median effective concentrations, i.e., pH50, and pH10, via …
Along the continental margins, rivers and submarine groundwater supply nutrients, trace elements, and radionuclides to the coastal ocean, supporting coastal ecosystems and, increasingly, causing harmful algal blooms and eutrophication. While the global magnitude of gauged riverine water discharge is well known, the magnitude of submarine groundwater discharge (SGD) is poorly …
Well-established satellite-derived Arctic and Antarctic sea ice extents are combined to create the global picture of sea ice extents and their changes over the 35-yr period 1979–2013. Results yield a global annual sea ice cycle more in line with the high-amplitude Antarctic annual cycle than the lower-amplitude Arctic annual cycle …
The Atlantic Meridional Overturning Circulation (AMOC) exhibits two stable states in models of varying complexity. Shifts between alternative AMOC states are thought to have played a role in past abrupt climate changes, but the proximity of the climate system to a threshold for future AMOC collapse is unknown. Generic early …
The world's oceans need expanded regions where fishing is barred to help preserve fragile ecosystems and protect them from what one leading biologist dubbed "a silent storm" driven by climate change. The World Parks Congress, a once-in-a-decade event, wrapped up in Sydney on Wednesday with calls to ensure at least …
Of the many processes contributing to long-term sea-level change, little attention has been paid to the large-scale contributions of salinity-driven halosteric changes. We evaluate observed and simulated estimates of long-term (1950-present) halosteric patterns and compare these to corresponding thermosteric changes. Spatially coherent halosteric patterns are visible in the historical record, …
Scientists warn that pollution may be dramatically increasing the rate of ocean acidification in inshore areas, threatening coral It has long been known that pollution is having a devastating impact on the Great Barrier Reef but now scientists are warning that it may also be dramatically increasing the rate of …
The researchers performed a global assessment of how fish biomass has changed over the last 100 years, applying a previously developed methodology using ecological modeling. Our assessment built on more than 200 food web models representing marine ecosystems throughout the world covering the period from 1880 yo 2007. All models …
Ocean acidification and coral reef damage is likely going to cost the world economy over a trillion dollars by 2100, according to a new report by United Nations (UN) experts. The report was released on Wednesday by the UN Convention on Biological Diversity, which has been assessing the economic impacts …
Using satellite observations and a large suite of climate models, Lawrence Livermore scientists have found that long-term ocean warming in the upper 700 meters of Southern Hemisphere oceans has likely been underestimated. "This underestimation is a result of poor sampling prior to the last decade and limitations of the analysis …
Oceans in the Southern Hemisphere, which make up 60 percent of the world's oceans, are warming far worse than previously thought, according to a new study. Using satellite observations and a large collection of climate models, Lawrence Livermore National Laboratory (LLNL) scientists have found that long-term ocean warming in the …
The cold waters of Earth's deep ocean have not warmed measurably since 2005, according to a new Nasa study. Researchers say that while the find does not throw suspicion on global warming, it is a mystery. They say it cold be related to the fact global warming appears to have …
Oceans in the southern hemisphere are warming faster than anticipated, with implications for rising sea levels and climate modelling. A team of scientists in California has studied rising temperatures of the southern hemisphere over the decades between 1970 and 2004, and recommended lifting estimates of ocean heat content by between …
Spiny damselfish study suggests it would take at least several generations for fish to start coping with climate change Rising carbon dioxide levels in oceans adversely change the behaviour of fish through generations, raising the possibility that marine species may never fully adapt to their changed environment, research has found. …
As the dominant reservoir of heat uptake in the climate system, the world’s oceans provide a critical measure of global climate change. Here, we infer deep-ocean warming in the context of global sea-level rise and Earth’s energy budget between January 2005 and December 2013. Direct measurements of ocean warming above …
