climate change – Page 19 – आवारा मुसाफिर

Deforestation drives climate change that harms remaining forest

April 14, 20221156 Views

UCI researchers reconsider carbon storage with improved climate models, satellite data In a paper published in Nature Communications, a team led by scientists from the University of California, Irvine, using climate models and satellite data, reveal for the first time how protecting tropical forests can yield climate benefits that enhance carbon storage in nearby areas. Many climate scientists use computer simulations to mimic the planet’s climate as it exists today and how it may exist in the future as humanity keeps emitting greenhouse gases. Such models rely on accurate measurements all the moving parts of the climate system, from how much sunlight hits and warms the climate, to the response of forest biomass to changes in temperature, rainfall and atmospheric carbon dioxide leve...

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‘Now or never’: Only severe emissions cuts will avoid climate extremes

AWARA MUSAFIR BUREAU

April 4, 2022512 Views

UN IPCC releases last of its three part series report on Climate Change Drastic cuts to fossil fuel use. Growing forests and eating less meat. These are just some of the actions needed in this decade to contain global warming to 1.5 degrees Celsius above preindustrial temperatures, a major report by the U.N. climate science agency said Monday. Despite climate change warnings issued by the Intergovernmental Panel on Climate Change (IPCC) since 1990, global emissions have continued to rise in the last decade, reaching their highest point in history. The result: global emissions are on track to blow past the 1.5 degrees C warming limit envisioned in the 2015 Paris Agreement and reach some 3.2 degrees C by century's end. FILE PHOTO: People hold a balloon during a demonstration by ...

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World’s largest ice sheet is threatened

AWARA MUSAFIR BUREAU

April 1, 20221100 Views

Warmer summers and meltwater lakes are damaging the fringes A first-of-its-kind study looking at surface meltwater lakes around the East Antarctic Ice Sheet across a seven-year period has found that the area and volume of these lakes is highly variable year-to-year, and offers new insights into the potential impact of recent climatic change on the ‘Frozen Continent’. The research, led by Durham University (UK), used over 2000 satellite images from around the edge of the East Antarctic Ice Sheet to determine the size and volume of lakes on the ice surface, also known as supraglacial lakes, across seven consecutive years between 2014 and 2020. Meltwater lake near Shackleton Ice Shelf, East Antarctica. Photo: David Small, Durham University The study, which involved Newcastle and ...

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Birds are laying eggs earlier as climate change shifts springs

AWARA MUSAFIR BUREAU

March 27, 2022650 Views

Global warming is turning wildlife habits upside down The early bird is getting even earlier. With climate change spurring earlier springs across much of North America, many birds are laying their eggs earlier in the year, according to a new study – adding to mounting evidence that global warming is turning wildlife habits upside down. Of 72 bird species examined around Chicago, roughly a third lay their eggs about 25 days earlier than they did a century ago, researchers report in the paper published on Friday in the Journal of Animal Ecology. FILE PHOTO: A flock of blackbirds search for trees to perch on in the town on Hopkinsville, Kentucky. REUTERS/Harrison McClary Those affected include the mourning dove, American kestrel and Cooper's hawk. The scientists so far have...

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Tropical forests turn down the planet’s heat by 1C, scientists find

AWARA MUSAFIR BUREAU

March 24, 2022276 Views

Tropical forests cool the world by more than 1 degree Celsius, increase rainfall, and shield people and crops from deadly heat, researchers said, showing the climate benefits of trees go beyond sucking planet-warming carbon dioxide out of the air. In a new study released on Thursday, they outlined different ways the Earth, its climate and its inhabitants rely on forests. As every tenth of a degree of warming fuels threats from extreme weather and rising seas, lead author Deborah Lawrence said it is key to “acknowledge that tropical forests have a very important role in maintaining temperatures at a safe level”. Cutting down forests puts at risk the Paris climate accord’s goal of capping the rise in global average temperatures at “well below” 2C and ideally 1.5C above pre-indu...

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Ocean warming threatens more frequent bleaching of Great Barrier Reef, report says

AWARA MUSAFIR BUREAU

March 21, 2022300 Views

Waters off Australia face more frequent and severe marine heatwaves that threaten the Great Barrier Reef, a report said on Monday, as a United Nations team began a visit to evaluate whether the World Heritage site should be listed as "in danger". The reef is at risk of another mass bleaching, following three in the past six years, as sea surface temperatures off the northeast coast of Australia have soared to as much as 2-4 degrees Celsius above average, Australian environmental group Climate Council said in the report. FILE PHOTO: A school of fish swim above a staghorn (Acropora cervicornis) coral colony as it grows on the Great Barrier Reef off the coast of Cairns, Australia October 25, 2019. REUTERS/Lucas Jackson The government's Great Barrier Reef Marine Park Authority last F...

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U.S. fires four times larger, three times more frequent since 2000

AWARA MUSAFIR BUREAU

March 17, 2022704 Views

New analysis confirms a palpable change in fire dynamics already suspected by many Fires have gotten larger, more frequent and more widespread across the United States since 2000, according to a new University of Colorado Boulder-led paper. Recent wildfires have stoked concern that climate change is causing more extreme events, and the work published today in Science Advances shows that large fires have not only become more common, they are also spreading into new areas, impacting land that previously did not burn. “Projected changes in climate, fuel and ignitions suggest that we’ll see more and larger fires in the future. Our analyses show that those changes are already happening,” said Virginia Iglesias, a research scientist with CU Boulder’s Earth Lab and lead author of the paper...

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Climate crisis is making endangered mountain gorillas more thirsty

AWARA MUSAFIR BUREAU

March 12, 2022718 Views

Endangered mountain gorillas increase the frequency they drink water as the temperature increases, suggesting a likely impact of climate change on their behavior, finds a new study published in Frontiers in Conservation Science. Researchers used 10 years of data from observations on the only two existing mountain gorilla populations and found that both populations drank water significantly more often at higher average temperatures than cooler ones. The results have important implications for the behavior and conservation of mountain gorillas, which are faced with continued increases in temperature and frequency of extreme weather events due to the climate crisis. Mountain gorillas in Bwindi Impenetrable National Park in Uganda drinking water. Photo: Martha Robbins Mountain gorill...

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Caribbean coral reefs have been warming for at least 100 years

AWARA MUSAFIR BUREAU

March 10, 2022820 Views

Data also reveals increase in amount and length of reef-disrupting abnormal heatwave events A new analysis outlines 150 years of sea-surface temperature history throughout the Greater Caribbean region, highlighting significant warming trends that have disrupted coral reef ecosystems. Colleen Bove of the University of North Carolina at Chapel Hill and colleagues present these findings in the open-access journal PLOS Climate on March 9. In addition to heating the atmosphere, climate change caused by human activity heats the world’s oceans, disrupting marine ecosystems. Previous research has documented dramatic warming-induced changes to coral reef ecosystems worldwide—and in the Caribbean in particular—identifying such effects as mass coral mortality through coral bleaching and loss o...

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With a nod to climate change, Alaska’s Iditarod marks its 50th running

AWARA MUSAFIR BUREAU

March 5, 2022282 Views

Every year since 1973, Alaska has celebrated the virtues of perseverance and fortitude by hosting the Iditarod, a 1,000-mile (1,610-km) dog sled race across the state's frozen wilderness that pushes its participants to the limits of endurance. But Alaska is much less frozen than it was 50 years ago. The state has warmed at more than twice the global rate, altering the Anchorage-to-Nome race along with nearly every aspect of life in the far north. "Alaska is a bit of a poster child for global warming," said Rob Urbach, chief executive of the Iditarod Sled Dog Race, which holds its traditional ceremonial start in Alaska's largest city on Saturday. Nearly 50 mushers and their dogs have registered to compete in the race. The Joe Redington Sr. Memorial Trail, named for the homestea...