Articles tagged with Oceans
A study published in Environmental Science & Technology found that body size and sea-surface temperature are primary factors affecting methylmercury levels in tuna. The researchers developed a model to predict mercury levels, which worked well for most regions but underestimated levels in certain areas.
Researchers successfully recreated Hokusai's famous 'Great Wave' using laboratory mirrors, gaining insights into the physics of freak waves. The study found that a crossing angle of approximately 120 degrees was critical to reproducing the wave, highlighting new wave breaking behavior.
Researchers found that humpback whale populations in the South Atlantic and Indian Oceans share similar song types, with males from different populations coming into contact to learn songs from each other. Over time, shared phrases and themes emerged, with similarities detected across years.
Tropical Cyclone Cilida rapidly intensified off the coast of Mauritius, with maximum sustained winds reaching 135 knots. The storm is expected to strengthen before weakening in four days, transitioning into an extra-tropical cyclone.
NASA-NOAA's Suomi NPP satellite observed two Category 2 hurricanes, Tropical Cyclone Kenanga and Tropical Cyclone Cilida, in the Southern Indian Ocean on Dec. 20, 2018. Both storms were sporting an eye and had maximum sustained winds near 90 knots (103.6 mph).
Tropical Cyclone Cilida showed a cloud-covered eye with powerful thunderstorms circling its 18 nautical mile wide center. The storm intensified rapidly by 55 knots in 24 hours due to warm sea surface temperatures and light outside winds.
Tropical Cyclone Kenanga was at hurricane-force when captured by NASA-NOAA's Suomi NPP satellite on Dec. 18. The image showed the eye surrounded by powerful thunderstorms and a large band of storms extending from the south to east.
Tropical Depression Phethai made landfall in southeastern India on Dec 17, causing significant wind shear that affected the storm's trajectory. NASA's Aqua satellite captured a visible image of Phethai after its landfall, revealing the bulk of clouds and showers north and east of the center of circulation.
Researchers discovered that diatoms storing iron through ferritin are more resilient to iron shortages, outcompeting others in shifting ocean conditions. This finding has significant implications for marine food webs and large ocean cycles.
NASA-NOAA's Suomi NPP satellite captured the remnants of Tropical Cyclone Owen showing a consolidating low level circulation center with deep convection building over the center. Sea surface temperatures are conducive for future tropical cyclone development, and forecast models indicate potential development over the next 24-36 hours.
Tropical Cyclone Owen weakened from a tropical storm to a depression due to wind shear, resulting in disorganized storm patterns and reduced thunderstorm development. The Joint Typhoon Warning Center notes a chance for the storm to re-strengthen after two days when wind shear relaxes.
Typhoon Man-yi's eye has become cloud-filled due to outside winds, indicating a weakening storm. The Joint Typhoon Warning Center predicts the storm will make a sharp turn to the northeast and pass east of Okinawa Island, Japan.
Research from the Sea Around Us initiative reveals that fishing companies could have increased profits by $50 million and $3-9.1 million by adopting sustainable fishing practices for menhaden and anchoveta stocks, respectively.
Tropical Storm Man-Yi is strengthening in the Northwestern Pacific, with warnings in effect for the Federated States of Micronesia and the Mariana Islands. The storm is expected to intensify into a typhoon by Thursday, potentially reaching winds of up to 110 mph.
Tropical Depression Man-yi has formed over the Northwestern Pacific Ocean, triggering watches and warnings for several Pacific island nations. The storm is expected to intensify through Friday, possibly becoming a tropical storm, with maximum sustained winds of 30 mph.
Tropical Cyclone Gaja formed on November 10 and strengthened into a tropical storm with maximum sustained winds near 40 mph. The satellite imagery showed an elongated storm with disorganized rain bands and fragmented convection patterns, moving west-southwest towards southern India.
Tropical Cyclone Bouchra formed on Nov. 10 and dissipated by Nov. 13, with maximum sustained winds of 34.5 mph. Wind shear weakened the storm's rotation, causing it to disintegrate.
Tropical cyclone Alcide formed in the South Indian Ocean northeast of Madagascar, prompting NASA's Global Precipitation Measurement mission to analyze its rainfall. GPM's data revealed strong convective storms dropping rain at a rate of over 44 mm/hour, with measurements of precipitation heights made possible by DPR Ku Band radar.
A study found that warmer ocean temperatures reduce maternal care and immune response in fur seal pups, leading to increased hookworm infections and deaths. In colder years, pups receive more care and have a stronger immune system.
Tropical Cyclone 03S has formed in the Southern Indian Ocean with maximum sustained winds near 35 knots. The storm is moving west-southwestward and is expected to strengthen over the next several days, according to NASA satellite imagery.
A recent study led by Princeton University researchers found that the world's oceans have absorbed 13 zettajoules of heat energy per year between 1991 and 2016, exceeding previous estimates by 60%. This increase in ocean warming suggests that Earth is more sensitive to fossil-fuel emissions than previously thought.
The US Navy's Task Force Ocean aims to advance its tactical advantage through better understanding of the ocean environment. The initiative will increase research funding and sponsor graduate students and post-doctorates in physical oceanography and acoustics.
Typhoon Yutu is intensifying east of Guam, with maximum sustained winds reaching 90 mph. The storm is expected to maintain its general course and speed over the next 24 hours, bringing typhoon-force winds up to 60 miles from the center.
Tropical Storm Yutu rapidly intensified from a tropical depression, becoming a storm with strong thunderstorms and winds of up to 50 mph. The storm is expected to pass just north of Saipan late Wednesday night or Thursday morning, posing a threat to Guam.
A special journal issue explores the relationship between rising oxygen levels and the emergence of complex life, suggesting that increased oxygen may have driven innovation in animal body plans. However, debate remains among scientists regarding the cause-and-effect relationship between oxygenation and the evolution of complex life.
NASA's Aqua satellite captured infrared data on the remnants of Tropical Storm Tara, which had weakened to maximum sustained winds near 35 mph. The storm produced scattered thunderstorms with cloud top temperatures as cold as -63 degrees Fahrenheit, posing a threat of life-threatening flash floods and mudslides in Mexico.
Hurricane Leslie is forecasted to impact southern Spain and Portugal with heavy rain and strong winds. The storm will pass north of Madeira Island on Saturday and move inland over the Iberian Peninsula by Sunday.
NASA satellite imagery revealed heavy rainfall affecting eastern Pennsylvania, New Jersey, and the northeastern US, with cloud top temperatures as cold as minus 63 degrees Fahrenheit. The Global Precipitation Measurement mission found the heaviest rainfall falling at a rate of over 1.6 inches per hour south of Long Island, New York.
Tropical Cyclone Luban is a symmetrical storm with a cloud-filled eye and powerful thunderstorms. It is forecast to make landfall in Oman between Lukalla and Salalah on Oct. 14.
NASA's Suomi NPP satellite tracked Tropical Cyclone Titli as it intensified over the Northern Indian Ocean, forming a ragged eye surrounded by powerful storms. The storm is expected to make landfall over northeastern India, prompting JTWC forecasters to predict a recurve northeastward over land.
The GPM core satellite measured rainfall rates within Typhoon Kong-Rey, revealing powerful storms in the northeastern eyewall producing over 1.4 inches of rain per hour. The Joint Typhoon Warning Center reports the storm is moving north-northwest towards Okinawa and Japan.
Hurricane Walaka is intensifying as a category 4 storm, with cloud top temperatures indicating strong thunderstorms capable of heavy rain. The hurricane is expected to turn toward the north-northeast with a faster forward motion, bringing powerful winds and potential weakening.
Typhoon Trami showed a wide and ragged eye with deep convection and developing thunderstorms in NASA-NOAA's Suomi NPP satellite image on Sept. 27, 2018. The storm was located near latitude 22.2 degrees north and longitude 128.6 degrees east, with maximum sustained winds of 90 knots.
NASA's Aqua satellite detected Tropical Storm Liua in the southern Pacific Ocean with two strongest storm areas west and northeast of its center. The storms had cloud top temperatures as cold as minus 80 degrees Fahrenheit, capable of generating heavy rainfall.
The Suomi NPP satellite observed Tropical Storm Kirk's regeneration east of the Caribbean Sea, prompting warnings and watches for the region. The storm strengthened to near 50 mph with higher gusts before expected weakening over the eastern Caribbean Sea.
NASA-NOAA's Suomi NPP satellite observed Tropical Storm Rosa strengthening into the Eastern Pacific's tenth hurricane. The storm is expected to become a major hurricane on Thursday, Sept. 27, with maximum sustained winds near 75 mph and rapid intensification forecast.
Super Typhoon Trami has a symmetric eyewall surrounding a 37 nautical-mile round eye, according to NASA's Terra satellite image. The storm is moving toward the wet-northwest with maximum sustained winds near 149.6 mph.
Tropical Storm Kirk formed on Sept. 22 but dissipated by Monday due to lack of closed circulation. The NOAA-20 satellite captured its peak visible image on the same day, revealing winds near 40 mph.
NASA's Aqua satellite captured a visible image of Tropical Depression 01S on September 17, revealing the storm's weakening state. The cyclone had maximum sustained winds of 30 knots and was forecast to dissipate soon, moving west towards Mauritius.
NASA-NOAA's Suomi NPP satellite detected tropical depression Olivia being affected by westerly wind shear, which was preventing thunderstorm development and causing weakening. The post-tropical cyclone is expected to dissipate over the weekend of Sept. 15 with maximum sustained winds near 35 mph.
The Woods Hole Center for Oceans and Human Health will continue to advance research on the links between oceanic processes and human health, with a focus on harmful algal blooms. The five-year funding aims to better understand public health risks associated with environmental exposures in marine coastal regions and the Great Lakes Basin.
Wind shear is tearing Tropical Storm Joyce apart, with coldest cloud top temperatures reaching minus 50 degrees Fahrenheit. The storm's rotation is being skewed by winds at different levels of the atmosphere, pushing against its cylindrical circulation center.
NASA's Suomi NPP satellite captures a visible image of Mangkhut, showing a symmetrical storm with a clear eye surrounded by powerful thunderstorms. The Joint Typhoon Warning Center reports maximum sustained winds near 167 mph, forecast to pass over Luzon as a category 5 equivalent typhoon.
Subtropical Storm Joyce is disorganized and wandering in the north central Atlantic Ocean, according to NASA satellite imagery. The system's patchy development of thunderstorms indicates a lack of organization, which may lead to heavy rain generation.
Super Typhoon Mangkhut strengthened into a Category 4 storm with sustained winds of 155mph. The National Weather Service predicts further intensification to Category 5 by Wednesday and Thursday.
Typhoon Mangkhut brought damaging winds to Guam and the Northern Marianas Islands, with sustained winds reaching up to 115mph. The storm is expected to intensify through Wednesday, September 12, before moving away from the region.
Tropical Storm 27W is forecast to intensify over the next three days before making landfall on Sept. 13 over China's Luichow Peninsula. The storm will then emerge into the Gulf of Tonkin, making a final landfall north of Hanoi, Vietnam.
Hurricane Norman rapidly intensified from 85 to 115 mph with Norman now a category 3 hurricane on the Saffir-Simpson scale. The center of the storm is located near latitude 19.5 degrees north and longitude 147.7 degrees west, moving towards the west-northwest.
A team of researchers discovered a new major source of formic acid over the Pacific and Indian oceans by exploiting non-equilibrium conditions. This breakthrough sheds light on current scientific understanding of hydrocarbon degradation in the atmosphere.
Post-Tropical Cyclone Lane has ceased to be a tropical cyclone and will dissipate soon after hitting record-setting rainfall on the Hawaiian Islands. The NASA-NOAA Suomi NPP satellite captured a visible image of its final hours, showing wind shear taking its toll on the storm.
Heavy rainfall was observed in a band of thunderstorms wrapping into the low-level center of Tropical Storm Miriam, with rain rates reaching over 10 inches per hour. The storm is currently located about 1,165 miles east-southeast of Hilo, Hawaii, and is expected to begin weakening by Friday.
A new paper warns of the shortcomings of Individual Transferable Quota (ITQ) systems for fisheries, which can discourage development of equitable alternatives. ITQs regulate fisheries access by dividing up total catch limits among individual quota owners, leading to negative consequences for small-scale fisheries and marginalized groups.
A fifth tropical cyclone has formed in the North Atlantic Ocean, with Subtropical Depression Five located near latitude degrees 37.6 north and longitude 45.6 west. The storm is moving toward the north at a speed of 5 mph, with forecasted strengthening expected during the next day or so.
NASA's Suomi NPP satellite captured an elongated Tropical Depression Hector in the Northwestern Pacific Ocean on August 15. The storm is expected to continue decaying due to high vertical wind shear and forward motion.
NASA-NOAA's Suomi NPP satellite detected Tropical Depression 14E in the Eastern Pacific Ocean on August 14. The depression is moving west at 14 mph and is expected to become a tropical storm over the next few days, with gradual strengthening forecast.
NASA-NOAA's Suomi NPP satellite captured a visible image of Tropical Storm Leepi, showing a small tropical cyclone with powerful thunderstorms. The storm is moving towards southern Japan and is expected to weaken over Korea by August 16.
Tropical Storm Hector has weakened and moved into the Northwestern Pacific Ocean, with fragmented thunderstorms detected. The storm is currently moving west-northwest near 17 mph, with maximum sustained winds of 50 mph.
Hurricane Hector was observed in detail by NASA-NOAA's Suomi NPP satellite, providing forecasters with valuable information on its clouds and structure. The storm maintained its strength with sustained winds of 120 mph and an estimated central pressure of 962 millibars.
Tropical Storm Shanshan has triggered warnings in the Marianas Islands due to powerful storms detected by NASA's Terra satellite. The storm is forecast to intensify and move towards Japan, with maximum sustained winds at 50 mph.
NASA-NOAA's Suomi NPP satellite detected Tropical Depression Jongdari near Japan, with diminishing convection over the low-level center. The storm is expected to maintain depression status as it moves towards China, with a potential landfall south of Shanghai on August 3.