ocean warming – आवारा मुसाफिर

Galapagos Islands and many unique creatures are at risk from warming waters

July 30, 2024319 Views

Warm morning light reflects from the remains of a natural rock arch near Darwin Island, one of the most remote islands in the Galapagos. In clear, deep blue water, thousands of creatures — fish, hammerhead sharks, marine iguanas — move in search of food. The 2021 collapse of Darwin’s Arch, named for the famed British naturalist behind the theory of evolution, came from natural erosion. But its demise underscored the fragility of a far-flung archipelago that’s coming under increased pressure both from climate change and invasive species. A piece of the edge of Darwin’s Arch is visible in the ocean above Pacific creolefish off of Darwin Island, Ecuador in the Galapagos on Thursday, June 13, 2024. (AP Photo/Alie Skowronski) Warming oceans affect the food sources of many of the seago...

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Earth in hot water? Worries over sudden ocean warming spike

AWARA MUSAFIR BUREAU

April 28, 2023753 Views

The world’s oceans have suddenly spiked much hotter and well above record levels in the last few weeks, with scientists trying to figure out what it means and whether it forecasts a surge in atmospheric warming. Some researchers think the jump in sea surface temperatures stems from a brewing and possibly strong natural El Nino warming weather condition plus a rebound from three years of a cooling La Nina, all on top of steady global warming that is heating deeper water below. If that’s the case, they said, record-breaking ocean temperatures this month could be the first in many heat records to shatter. From early March to this week, the global average ocean sea surface temperature jumped nearly two-tenths of a degree Celsius (0.36 degree Fahrenheit), according to the University of M...

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Palau’s Rock Islands harbor heat-resistant corals

AWARA MUSAFIR BUREAU

December 23, 2022523 Views

Finding could help reef managers to develop new defenses against ocean warming Ocean warming is driving an increase in the frequency and severity of marine heatwaves, causing untold damage to coral reefs. Tropical corals, which live in symbiosis with tiny single celled algae, are sensitive to high temperatures, and exhibit a stress response called bleaching when the ocean gets too hot. In the last 4 decades, marine heatwaves have caused widespread bleaching, and killed millions of corals. Because of this, a global search is underway for reefs that can withstand the heat stress, survive future warming, and act as sources of heat-tolerant coral larvae to replenish affected areas both naturally and through restoration. Now, scientists studying reefs in Palau, an archipelago in th...

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Rapid warming in the Gulf of Maine reverses 900 years of cooling

AWARA MUSAFIR BUREAU

August 9, 2022536 Views

Rapid 20th century warming in the Gulf of Maine has reversed long-term cooling that occurred there during the previous 900 years, according to new research that combines an examination of shells from long-lived ocean quahogs and climate model simulations. The warming is “likely due to increased atmospheric greenhouse gas concentrations and changes in western North Atlantic circulation,” according to the paper, “Rapid 20th century warming reverses 900-year cooling in the Gulf of Maine,” published in Communications Earth & Environment, an open access journal from Nature Portfolio. An Arctica islandica shell perches on the railing of the ESS Pursuit during a research cruise in the Mid-Atlantic Bight, south of the Gulf of Maine. Credit: Image credit: Nina Whitney/ © Woods Hole Ocean...