climate change – Page 15 – आवारा मुसाफिर

Antarctica’s ice shelves could be melting faster than we thought

August 16, 2022218 Views

How coastal ocean currents increase Antarctic ice shelf melt A new model developed by Caltech and JPL researchers suggests that Antarctica's ice shelves may be melting at an accelerated rate, which could eventually contribute to more rapid sea level rise. The model accounts for an often-overlooked narrow ocean current along the Antarctic coast and simulates how rapidly flowing freshwater, melted from the ice shelves, can trap dense warm ocean water at the base of the ice, causing it to warm and melt even more. The study was conducted in the laboratory of Andy Thompson, professor of environmental science and engineering, and appears in the journal Science Advances on August 12. A research vessel in Antarctica on June 3, 2017. Photo: Ben Adkison Ice shelves are outcroppings of t...

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Italy’s Lake Garda shrinks to near-historic low amid drought

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August 14, 2022217 Views

Italy’s worst drought in decades has reduced Lake Garda, the country’s largest lake, to near its lowest level ever recorded, exposing swaths of previously underwater rocks and warming the water to temperatures that approach the average in the Caribbean Sea. Tourists flocking to the popular northern lake Friday for the start of Italy’s key summer long weekend found a vastly different landscape than in past years. An expansive stretch of bleached rock extended far from the normal shoreline, ringing the southern Sirmione Peninsula with a yellow halo between the green hues of the water and the trees on the shore. People sunbath on the peninsula of Sirmione, on Garda lake, Italy, Friday, Aug. 12, 2022. (AP Photo/Antonio Calanni) “We came last year, we liked it, and we came back this y...

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African wildlife parks face climate, infrastructure threats

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August 14, 20221018 Views

Africa’s national parks, home to thousands of wildlife species such as lions, elephants and buffaloes, are increasingly threatened by below-average rainfall and new infrastructure projects. A prolonged drought in much of the continent’s east, exacerbated by climate change, and large-scale developments, including oil drilling and livestock grazing, are hampering conservation efforts in protected areas, several environmental experts say. FILE PHOTO: A pair of hippopotamuses cool off in the Nile river near the waterfalls in Murchison Falls National Park, northwest Uganda, on Feb. 21, 2020. (AP Photo) The at-risk parks stretch all the way from Kenya in the east — home to Tsavo and Nairobi national parks — south to the Mkomazi and Serengeti parks in Tanzania, the Quirimbas and Gorongo...

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Drought in England, fires rage in France as heatwave persists

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August 13, 2022611 Views

Firefighters from across Europe came to France's rescue on Friday to battle a massive wildfire, while fire also raged in Portugal and parts of England faced a severe drought, as successive heatwaves renewed the focus on climate change risks. Much of Europe has faced weeks of baking temperatures that have also depleted water levels of the Rhine River in Germany and seen the source of Britain's River Thames dry up further downstream than in previous years. A firefighting aircraft drops flame retardant to extinguish a wildfire near Hostens, as wildfires continue to spread in the Gironde region of southwestern France, in this handout photograph released on August 12, 2022. Courtesy SDIS 33/Handout via REUTERS High temperatures and a worsening drought brought a high risk of new fires...

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Tourist boats marooned, farmland parched as drought lowers Europe’s rivers

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August 10, 2022216 Views

Business for Francoise Droz-Bartholet has reduced to a trickle, just like stretches of the Doubs River straddling the French-Swiss border that her cruise boats usually ply. Water levels in rivers, lakes and reservoirs across western Europe are running low, or even dry, amid the severest drought in decades which is putting stress on drinking water supplies, hampering river freight and tourism and threatening crop yields. The dried bed of the drought-affected Doubs River is seen in Arcon, France, August 8, 2022. REUTERS/Denis Balibouse The Doubs river should coarse through a forested canyon and cascade over waterfalls before spilling out into Brenets Lake, a draw for tourists in eastern France's Jura region. After months without meaningful rain, the river water has receded up the c...

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

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August 9, 2022509 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...

जलवायु परिवर्तन

A lose-lose game: animals are under threat as the climate gets warmer and more variable

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August 8, 2022265 Views

How has climate change affected your life? Maybe torrential rains have flooded part of your town, or your city has had to contend with longer heat waves every year. Maybe you kept your attention on the news for days at a time to find out if a wildfire would change its direction and come toward you, or if a hurricane would be strong enough that you should evacuate. Climate change will continue to affect the world around us in complex and tragic ways. Increasing temperatures are causing rising ocean levels, shifting weather patterns, and threatening the survival of animals and plants. But along with increasing temperatures, the climate is also becoming more variable, and more extreme. The brown anole (Anolis sagrei) is one of the species studied by the Logan Lab and could provide valu...

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13 of the 19 glaciers in Alaska show substantial retreat

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August 5, 2022420 Views

New study calculates loss of glacier edges in Kenai Fjords National Park As glaciers worldwide retreat due to climate change, managers of national parks need to know what’s on the horizon to prepare for the future. A new study from the University of Washington and the National Park Service measures 38 years of change for glaciers in Kenai Fjords National Park, a stunning jewel about two hours south of Anchorage. The study, published Aug. 5 in The Journal of Glaciology, finds that 13 of the 19 glaciers show substantial retreat, four are relatively stable, and two have advanced. It also finds trends in which glacier types are disappearing fastest. The nearly 670,000-acre park hosts various glaciers: some terminate in the ocean, others in lakes or on land. Bear Glacier, shown here i...

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Fiji, moving villages inundated by rising seas, wants big emitters to pay

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August 3, 2022870 Views

Boats moor next to living rooms on Fiji's Serua Island, where water breaches the seawall at high tide, flooding into the village. Planks of wood stretch between some homes, forming a makeshift walkway as saltwater inundates gardens. Village elders always believed they would die here on prized land where their chiefs are buried. But as the community runs out of ways to adapt to the rising Pacific Ocean, the 80 villagers face the painful decision whether to move. Local resident Rapuma Tuqio, 67, looks out at seawater flooding around his home at high tide in Veivatuloa Village, Fiji, July 16, 2022. He has lived in the village for around 20 years, including 12 or 13 years in that seaside home. REUTERS/Loren Elliott Semisi Madanawa, raising three children who wade through playgroun...

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High temperatures unleash marine heatwave in Mediterranean Sea

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July 30, 2022694 Views

High temperatures across Europe this month have unleashed a prolonged marine heatwave in the Mediterranean Sea that could ravage ecosystems and kill off several species in the coming weeks, scientists have warned. The extreme heat in recent weeks has already sparked wildfires and led to thousands of heat-related deaths in Europe, but that warmth hasn't been limited to the land. The warmer air along with shifting ocean currents and a stable sea surface have warmed coastal Mediterranean waters several degrees Celsius beyond the average temperature of 24°C to 26°C for this time of year. FILE PHOTO: A couple tourists in silhouettes visit the sea caves at sunset, in the southern coastal resort of Ayia Napa in southeast Mediterranean island of Cyprus, Sunday, May 29, 2022. (AP Photo/Pe...