Articles tagged with Ocean Temperature
Researchers have developed a new way to determine sea-level changes and deep-sea temperature variability over the past 5.3 million years. The findings provide crucial new information on how ice ages came about, and could help determine the relationship between carbon dioxide levels, global temperatures, and sea levels.
Tropical Cyclone Ita is strengthening due to increased wind speeds and cold cloud top temperatures detected by NASA's Aqua satellite. The storm's center is consolidating, surrounded by strong thunderstorms, and is expected to move towards Queensland, Australia over the next three days.
Researchers at Aarhus University found a correlation between Atlantic Ocean temperature fluctuations and external forces like the Sun's energy cycle and volcanic eruptions since the Little Ice Age. This challenges previous theories of internal variability in ocean circulation, suggesting a complex interaction between mechanisms.
A new study projects that Antarctica's Ross Sea will lose over half its summer sea ice by 2050 and nearly three-quarters by 2100. This change will significantly impact the region's pristine food web, affecting species such as whales, penguins, and seals.
Research reveals a significant increase in summer sea level rise and decrease in winter sea level drop along the eastern Gulf Coast, leading to a greater seasonal difference. This change threatens coastal ecosystems, increases flood risk from hurricanes, and may disrupt salt balance in sensitive wetlands.
System 94S continues to track over Western Australia and the Northern Territory, with NASA's Aqua satellite detecting powerful thunderstorms northwest of the low-pressure center. Heavy rainfall warnings have been issued for the region, with some storms potentially producing heavy rain rates.
Researchers have found a dramatic decrease in sea ice cover over the last 150 years, with annual growth increments doubling since the Little Ice Age. This discovery provides new insights into climate reconstruction and extends knowledge back to the mid-1800s.
Tropical Storm Raymond's maximum rainfall intensity was only about 33.6mm/hour, and its winds weakened to near 50mph/85kph on Oct. 29. The storm is expected to become a remnant low in a day or so due to cooler ocean temperatures and southwesterly wind shear.
Researchers have discovered that plankton shells contain growth bands that record daily variations in magnesium chemistry, providing a proxy for past ocean temperature. This breakthrough allows scientists to study short timescale changes in ocean temperatures hundreds of millions of years ago.
Typhoon Wipha's effects were felt in Alaska from October 18 to 20, bringing heavy rainfall and strong winds. The system's transition into an extra-tropical storm led to increased moisture and warming of the region.
Typhoon Pabuk strengthened as it moved north through the northwestern Pacific Ocean, with NASA's Aqua satellite capturing an infrared image that showed powerful thunderstorms east of its center. The storm was expected to turn northeast and bring rain and gusty winds to eastern Japan.
System 95L has a high chance of becoming a tropical depression as it moves west-northwestward at 5 to 10 mph. NASA's Global Hawk gathers data on this low-pressure area, which is expected to spread heavy rain over eastern and southern Mexico.
Tropical cyclones rely on hundreds of thunderstorms with coldest cloud top temperatures to produce heavy rain. Infrared imagery from NASA's Aqua satellite revealed that wind shear was pushing storm systems away from the center of Tropical Storm Kong-Rey.
New research from Durham University reveals that the East Antarctic Ice Sheet may be more susceptible to changes in air temperatures and sea-ice than previously believed. The study found rapid and synchronised periods of advance and retreat among 175 glaciers along the coastline, coinciding with cooling and warming patterns.
A year-long experiment shows that coccolithophores can build strong shells in acidic waters, contrary to earlier studies. The organisms' ability to cope with future ocean conditions may depend on genetic diversity among species.
Typhoon Trami made landfall in east China's Fujian Province with maximum sustained winds near 75 knots/86 mph. The storm's infrared view showed tightly wrapped powerful thunderstorms around the center during landfall, indicating strong uplift and potential heavy rainfall.
The Greenland ice sheet is losing about 227 gigatonnes of ice per year, contributing to sea level rise. Researchers have coupled an ice/climate model with a thermo-mechanical model to accurately depict the ice sheet's dynamics and temperature changes.
Research challenges conventional wisdom on giant sea creatures in polar seas, suggesting that large body sizes have an advantage in cold conditions by regulating oxygen uptake. This allows them to survive in environments with limited oxygen availability, contrary to the long-held idea that a superabundance of oxygen drives gigantism.
Researchers found snails increased oxygen consumption 4-5 times during jumping to cope with rising temperatures. The study suggests the snails can maintain this strong increase in oxygen uptake even at high temperatures that would be lethal to fish.
A new study maps the most detailed forecast to date for importing potentially harmful invasive species with cargo ships' ballast water. The research reveals hotspots of bioinvasion, including large Asian ports and US ports like New York and Long Beach.
Scientists used a new lab technique to analyze fossil snail shells, gaining insights into an abrupt climate shift 34 million years ago. The study found a drop of up to 10 C in land temperature and linked atmospheric carbon dioxide concentrations to surface temperatures.
Rice University researchers are developing a comprehensive model that predicts how brine, oil, and gas react to extreme temperatures and pressures. The model aims to provide companies with strategies to maintain flow and reduce risk in deepwater production.
New research from the Antarctic Peninsula reveals a significant increase in the length of the melting season over the last 60 years. The study found that the summer melt season has been linked to the rapid break-up of ice shelves and rising sea levels, with temperatures warming by up to 3°C since the 1950s.
Research predicts 20% of Canadian Arctic glaciers will melt by end of century, causing irreparable ice loss and sea-level rise. The study's results show that climate change reinforces warming, making it highly likely that glaciers will melt at alarming rate.
Researchers found that warmer ocean temperatures weaken mussels' fibrous threads, making them more prone to detachment. This can have cascading effects on the marine food web and commercial mussel farming.
NASA's satellite imagery reveals a powerful band of thunderstorms east of Oswald's center, with temperatures as cold as -63 Fahrenheit (-52 Celsius). The low-level circulation center has become well-defined, triggering severe weather warnings for destructive winds and heavy rainfall across parts of Australia.
New study finds Western Antarctica warming at three times the global average, with potential for catastrophic consequences on sea levels. The region's ice shelves are vulnerable to melting, contributing significantly to sea level rise.
Typhoon Bopha dissipated in the South China Sea due to increased wind shear, weakening its strong thunderstorms and reducing its impact on the Philippines. The NASA Aqua satellite provided critical infrared data showing a significant decline in the storm's area of strongest thunderstorms.
Typhoon Bopha intensified with a 'hot tower' thunderstorm reaching 12 kilometers high, indicating storm intensification within 6 hours. The storm also produced areas of bitterly cold cloud-top temperatures of -63C/-81F, where the strongest thunderstorms and heaviest rainfall were found.
Researchers found that global warming prevented plant and animal species from fully recovering from the largest mass extinction in Earth's history. The study, led by Ohio State University doctoral student Alexa Sedlacek, suggests that life on Earth today may face similar problems in trying to recover from current climate change.
Tropical Cyclone Nilam brought heavy rainfall to Sri Lanka, with cloud top temperatures as cold as -63F (-52C), indicative of intense storms. The cyclone's center was forecast to make landfall in Tamil Nadu, India, on October 30.
Tropical Storm Son-tinh made landfall in northern Vietnam and is curving to the northeast, tracking over southern China. The storm's powerful thunderstorms are reaching high into the troposphere, dropping heavy rainfall at rates of 50 mm/2 inches per hour.
Research shows that warmer oceans will cause phytoplankton populations to thrive near the poles and shrink in equatorial waters, leading to significant changes in the food chain and global carbon cycles. This shift could have measurable consequences for the world's climate.
A new study reveals that climate change will have devastating effects on the Baltic Sea, including a decline in species diversity and a rise in eutrophication. Researchers found that reducing nutrient run-off from land may help mitigate these changes.
Tropical Storm Maria is weakening due to increased wind shear and cool ocean temperatures, but will continue moving north-northeast over open waters. The storm's circulation is consolidating, with tightly curved bands of thunderstorms around the center.
Scientists discovered a diversion of the Gulf Stream's path south of New England in late 2011, resulting in unusually high surface water temperatures and strong currents. The researchers found that the warm waters were carried by the Gulf Stream itself, rather than just transient warm core rings.
Iowa State researchers use clam shell data to reconstruct ocean circulation patterns, recording growing conditions, temperatures, and circulation patterns. The study sheds light on the impact of human activities on climate variability over the past 1,000 years.
NASA's Aqua satellite revealed powerful thunderstorms around Hurricane Miriam's center on Sept. 23, triggering the storm's rapid intensification. The satellite's infrared data showed cloud top temperatures exceeding -63 Fahrenheit (-52 Celsius), indicating uplift and heavy rainfall.
Tropical Storm Nadine is physically turning its direction, heading back to the west-northwest and away from land. NASA's Global Hawk flew over the storm, collecting data on wind speeds and cloud top temperatures, indicating strongest thunderstorms and heaviest rainfall in the northeast.
Post-tropical cyclone John's cloud top temperatures warmed by 24 hours, with one tiny area of convection remaining. The remnants of the storm are moving northwest and expected to dissipate later today.
Researchers have discovered that subsurface temperatures in the western tropical Atlantic rapidly warmed during cold periods in Earth's past. This finding suggests that when the global conveyor belt slowed down, warm subsurface waters flowed southward and rapidly warmed the deep tropics, altering climate patterns globally.
Tropical Storm Kai-tak continues to drop heavy rainfall and move toward a landfall in China, with NASA tracking its progress using infrared data from the Aqua satellite. Forecasters warn of potential intensification to typhoon strength before landfall near Hong Kong.
Researchers have successfully reconstructed ancient climate change records over the last 1.5 million years by separating ocean temperatures from changes in global ice volume. This new dataset provides a more accurate picture of the Earth's climate system, shedding light on major shifts in climate patterns.
Researchers used GPS to measure short-term changes in Greenland's ice loss, finding a link between ice and atmospheric pressure. The study, published in PNAS, uses the Greenland bedrock as a 'bathroom scale' to weigh ice mass.
Tropical Depression Khanun made landfall in western South Korea on July 19, bringing heavy rainfall and thunderstorms. The satellite tracked the northeastern progression of the cyclone as it moved toward North Korea and northeastern China, eventually dissipating due to atmospheric conditions.
A recent glacier break in Greenland has created an ice island approximately 46 square miles in size, similar to the mega-calving event that occurred two years ago. This phenomenon highlights the ongoing melting and reduction of the Greenland ice sheet due to global climate change.
The study reveals that reduced Arctic sea ice contributes to ground-level warming, while global warming intensifies atmospheric circulation and temperature increases in the Arctic atmosphere. The combination of these factors amplifies the greenhouse effect, leading to faster Arctic warming.
A new study projects significant sea-level rise of up to 3.5 metres even at relatively low levels of global warming, highlighting the need for reducing greenhouse-gas emissions. Limiting warming to below 1.5 degrees Celsius could halve sea-level rise by 2300.
A new study predicts that global warming will lead to a significant decline in Emperor penguin populations by 2040, with only 500-600 breeding pairs remaining by 2100. The melting of sea ice will disrupt the penguins' food source and breeding habits.
Typhoon Guchol is intensifying and expected to bring rough surf, heavy rainfall, and typhoon conditions to Okinawa and western Japan over the weekend. The storm has spawned alerts in the Philippines and has a compact diameter of approximately 110 nautical miles.
Researchers used sediment cores to study climate conditions during the Eemian period, which may not be a suitable analogue for current climate change. The Atlantic Ocean showed higher-than-Holocene temperature signals, while the Nordic Seas indicated cold conditions, suggesting a significant difference in oceanic circulation.
Researchers from University of Copenhagen analyzed 80-year-old aerial photos to study glacial evolution in Greenland. The results show that glaciers can recover within a short timeframe if temperatures decrease, contradicting current global warming models.
Hurricane Bud is expected to make a quick landfall in western Mexico before turning back to sea, bringing heavy rainfall and severe flooding to the region. The storm's slow movement may result in life-threatening flash floods and mudslides as it moves over Mexico's rugged coastal terrain.
Researchers found evidence of glacier sensitivity to rising temperatures and a massive body of sand in the North Sea large enough to cover London. They also uncovered the oldest evidence of animals burrowing for food, which coincides with the earliest ecological differentiation of macroscopic communities.
Researchers from University of Wisconsin-Madison find that nacre's microscopic structure can be used to measure water temperature and depth, providing a new tool for reconstructing ancient environments. The material's unique signature also holds information on environmental conditions.
A Yale-led study reveals that tens of millions of years ago, Antarctic fish adapted to new polar conditions and developed 'anti-freeze' proteins. However, today they are endangered due to rapid ocean temperature rises.
Recent experiments show that corals with a single type of zooxanthellae can have varying thermal tolerance, with some coping well to higher temperatures while others suffer severe bleaching. This finding challenges the previous assumption that corals associating with the same type of zooxanthellae are physiologically similar.
A NASA study using satellite data from Landsat missions has confirmed that warming temperatures in northern Quebec have resulted in an increase in shrubs and grasses over the past 20 years. The study provides a detailed view of how warmer temperatures are influencing plant distribution and density in northern areas of North America.
Researchers discovered that some tropical fish can adjust to higher sea temperatures by transmitting information between generations. This allows them to cope with elevated water temperatures, but may have penalties such as smaller offspring and reduced reproduction rates.
Tropical Storm Rina is forming and strengthening in the western Caribbean Sea, with heavy rainfall affecting Honduras and the Cayman Islands. The storm has a large area of heavy rainfall extending towards the northeast from eastern Honduras.