climate change – Page 21 – आवारा मुसाफिर

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

March 17, 2022732 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, 2022750 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, 2022881 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, 2022296 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...

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Adapt now, or suffer later

AWARA MUSAFIR BUREAU

February 28, 2022666 Views

# U.C. climate report says drastic action needed# 'Delay means death' says U.N. secretary general Guterres# Change impacting world faster than anticipated - report# Breaching 1.5C threshold will cause irrepairable damage# 'Brief and rapidly closing window' for action Climate change is upon us and humanity is far from ready, the United Nations climate panel warned in a major report on Monday. Noting that nearly half the world's population was already vulnerable to increasingly dangerous climate impacts, the report calls for drastic action on a huge scale: A third to a half of the planet needs to be conserved and protected to ensure future food and freshwater supplies. Coastal cities need plans to keep people safe from storms and rising seas. And more. "Adaptation saves lives," U.N...

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Why Patagonia is rising as glaciers melt!

AWARA MUSAFIR BUREAU

February 28, 20221387 Views

Seismic study reveals how newly unburdened earth rebounds and rises The icefields that stretch for hundreds of miles atop the Andes mountain range in Chile and Argentina are melting at some of the fastest rates on the planet. The ground that was beneath this ice is also shifting and rising as these glaciers disappear. Geologists have discovered a link between recent ice mass loss, rapid rock uplift and a gap between tectonic plates that underlie Patagonia. Scientists at Washington University in St. Louis, led by seismologist Douglas Wiens, the Robert S. Brookings Distinguished Professor in Arts & Sciences, recently completed one of the first seismic studies of the Patagonian Andes. In a new publication in the journal Geophysical Research Letters, they describe and map out local...

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Earth’s coldest forests are shifting northward with climate change

AWARA MUSAFIR BUREAU

February 25, 2022281 Views

New research from Northern Arizona University shows rising temperatures are causing Earth’s coldest forests to shift northward, raising concerns about biodiversity, an increased risk of wildfires and mounting impacts of climate change on northern communities. Logan Berner, assistant research professor in the School of Informatics, Computing, and Cyber Systems (SICCS) and Scott Goetz, Regents’ professor and director of the GEODE Lab, authored the article, “Satellite observations document trends consistent with a boreal forest biome shift,” which was published Thursday in Global Change Biology. The boreal forest is a belt of cold-tolerant conifer trees that stretches nearly 9,000 miles across northern North American and Eurasia; it accounts for almost a quarter of the Earth’s forest area...

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Greenland Ice Sheet becoming world’s largest ‘dam’

AWARA MUSAFIR BUREAU

February 24, 20221179 Views

Melting rate accelerating at the most important ice on Earth Researchers have observed extremely high rates of melting at the bottom of the Greenland Ice Sheet, caused by huge quantities of meltwater falling from the surface to the base. As the meltwater falls, energy is converted into heat in a process like the hydroelectric power generated by large dams. An international team of scientists, led by the University of Cambridge, found that the effect of meltwater descending from the surface of the ice sheet to the bed – a kilometre or more below – is by far the largest heat source beneath the world’s second-largest ice sheet, leading to phenomenally high rates of melting at its base. Water flowing into a moulin and down to the bed of Store Glacier, Greenland. Photo: Poul Christoff...

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Extreme wildfires are here to stay – and multiply

AWARA MUSAFIR BUREAU

February 24, 20221124 Views

Indonesia's peatlands, California's forests, and, now, vast swathes of Argentine wetland have all been ravaged by extreme wildfires, heralding a fiery future and the dire need to prevent it. With climate change triggering droughts and farmers clearing forests, the number of extreme wildfires is expected to increase 30% within the next 28 years. And they are now scorching environments that were not prone to burning in the past, such as the Arctic's tundra and the Amazon rainforest. FILE PHOTO: A house is fully engulfed by flames at the Dixie Fire, a wildfire near the town of Greenville, California, U.S. August 5, 2021. REUTERS/Fred Greaves "We've seen a great increase in recent fires in northern Syria, northern Siberia, the eastern side of Australia, and India," said Australian go...

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Climate change is destroying Arctic coasts

AWARA MUSAFIR BUREAU

February 18, 2022744 Views

Future land loss calculated for the first time in a scientific research Erosion is destroying the coasts of the Arctic. The warming of the soil, leading to ruptures and slumping, can endanger important infrastructures and threaten the safety of local populations. In addition, these processes release carbon stored in soils into the ocean, which could alter the role of the Arctic Ocean as an important storehouse of carbon and greenhouse gases. They could also contribute to increase climate change. Scientist investigating coastal erosion caused by thawing permafrost near Bykovsky peninsula, Laptev Sea, Siberia, Russia. Photo: AWI/Paul Overduin Until now, insights into the magnitude and speed of these changes have been lacking for the future. Using a new combination of computational ...