climate change – Page 21 – आवारा मुसाफिर

World’s most famous ‘mega iceberg’ released 152 billion tonnes of fresh water into ocean

January 22, 2022345 Views

Scientists monitoring the giant A68A Antarctic iceberg from space reveal that a huge amount of fresh water was released as it melted around the sub-Antarctic island of South Georgia 152 billion tonnes of fresh water – equivalent to 20 x Loch Ness or 61 million Olympic sized swimming pools, entered the seas around the sub-Antarctic island of South Georgia when the megaberg A68A melted over 3 months in 2020/2021, according to a new study. In July 2017, the A68A iceberg snapped off the Larsen-C Ice Shelf on the Antarctic Peninsula and began its epic 3.5 year, 4000 km journey across the Southern Ocean. At 5719 square kilometres in extent – quarter the size of Wales –, it was the biggest iceberg on Earth when it formed and the sixth largest on record. Around Christmas 2020, the berg rece...

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Climate crisis drives Mediterranean coral populations to collapse

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January 21, 2022916 Views

A new study led by teams of the Faculty of Biology, the Biodiversity Research Institute (IRBio) of the University of Barcelona, and the Institute of Marine Sciences (ICM-CSIC) of Barcelona has revealed that marine heatwaves associated with the climate crisis are bringing down the populations of coral in the Mediterranean, the biomass of which in some cases has been reduced by 80 to 90%. According to the study, published in the journal Proceedings of the Royal Society B, coral populations of the Mediterranean —essential for the functioning of the coral reefs, one of the most emblematic habitats in this sea— could be unable to recover from the recurrent impact of these extreme episodes, with water temperatures reaching high degrees for days and even weeks. This is the first study ...

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Climate change will limit choice for Winter Games hosts, says study

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January 19, 20221249 Views

Of the 21 cities to host the Winter Olympics, only Sapporo, Japan would be able to provide fair and safe conditions to stage them again by the end of the century if greenhouse gases are not dramatically reduced, said a University of Waterloo study released on Tuesday. An international team of researchers, led by the University of Waterloo, reviewed historical climate data from the 1920s along with future climate change trends. They determined that winter playgrounds such as St. Moritz and Lillehammer could become Olympic relics by the mid to late century, with unreliable conditions ruling them out as Games hosts. A worker sets up an installation featuring Bing Dwen Dwen, the Beijing 2022 Winter Olympic Mascot and Shuey Rhon Rhon, the 2022 Beijing Winter Paralympic Games Mascot, i...

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Greece to ban development in mountain areas to protect habitats

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January 18, 20221018 Views

Greece will forbid new road building and development in six of its mountain areas, taking a first step to protect its last remaining virgin habitats, Environment Minister Kostas Skrekas said on Tuesday. Making the transition to green energy a key priority, the conservative government of Prime Minister Kyriakos Mitsotakis has promised to shut down nearly all its lignite-fired plants by 2025 and protect areas with native plants and animals. FILE PHOTO: A storm approaches the snow covered mountain range of Panachaiko, near Kalavryta, some 200 km (124 miles) south-west of Athens in Peloponnese district. REUTERS/Yannis Behrakis Following devastating wildfires fuelled by a protracted heatwave last summer, the government has also promised to build better climate change defences to prote...

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2021 fifth warmest year in India since 1901

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January 14, 2022240 Views

The year 2021 was the fifth warmest year in India since 1901, with the country recording its annual mean air temperature at 0.44 degree Celsius above normal, the India Meteorological Department said on Friday. The country also reported 1,750 deaths due to extreme weather events such as floods, cyclonic storms, heavy rain, landslides, lightning, among others, during the year, it said. "The year 2021 was the fifth warmest year after 2016, 2009, 2017 and 2010 since 1901. The annual mean air temperature for the country was recorded at 0.44 degree Celsius above normal," the MeT department's annual climate statement, 2021 stated. "The warm temperature during winter and post-monsoon season mainly contributed to this," it said In 2016, the annual mean air temperature for the country w...

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EU scientists say 2021 was world’s fifth-hottest year on record

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January 10, 2022644 Views

Last year was the world's fifth hottest on record, while levels of planet-warming carbon dioxide and methane in the atmosphere hit new highs in 2021, European Union scientists said. The EU's Copernicus Climate Change Service (C3S) said in a report on Monday that the last seven years were the world's warmest "by a clear margin" in records dating back to 1850 and the average global temperature in 2021 was 1.1-1.2C above 1850-1900 levels. The hottest years on record were 2020 and 2016. Countries committed under the 2015 Paris Agreement to try to limit global temperature rise to 1.5C, the level scientists say would avoid its worst impacts. That would require emissions to roughly halve by 2030, but so far they have charged higher. As greenhouse gas emissions change the planet's...

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Climate change might be behind disappearance of ancient bears and lions

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January 6, 2022358 Views

Lions and brown bears colonized North America in multiple synchronous waves of dispersal across the Bering Land Bridge An international team of researchers led by the University of Adelaide, suggest a change in climate is the likely cause of the mysterious disappearance of ancient lions and bears from parts of North America for a thousand years or more prior to the last Ice Age. In a study in Molecular Ecology, the researchers sequenced DNA from fossils of cave lions and bears from North America and Eurasia to better understand the timing and drivers of their past movement between continents. Co-author, Dr Kieren Mitchell from the University of Adelaide’s Australian Centre for Ancient DNA said, “There's a common perception that outside of mass extinctions or direct human inte...

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Mass die-off of Magellanic penguins seen during 2019 heat wave

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January 5, 2022243 Views

In June 2021, an unprecedented heat wave hit the Pacific Northwest and Canada, killing an estimated 1,400 people. On June 28, Seattle reached 108 F — an all-time high — while the village of Lytton in British Columbia recorded Canada’s highest-ever temperature of 121.3 F on June 29, the day before it was destroyed by a heat-triggered wildfire. Climate change is expected to bring more such extreme heat events globally, with far-reaching consequences not just for humans, but for wildlife and ecosystems. In 2019, University of Washington researchers witnessed this in Argentina at one of the world’s largest breeding colonies for Magellanic penguins. On Jan. 19, temperatures at the site in Punta Tombo, on Argentina’s southern coast, spiked to 44 C, or 111.2 F, and that was in the shade. A...

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Baked Alaska – record December warmth and winter rains

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December 29, 2021907 Views

An unusual winter warm spell in Alaska has brought daytime temperatures soaring past 60 degrees Fahrenheit (15.5°C) and torrents of rain at a time of year normally associated with bitter cold and fluffy snow. At the island community of Kodiak, the air temperature at a tidal gauge hit 67 F (19.4°C) degrees on Sunday, the highest December reading ever recorded in Alaska, said scientist Rick Thoman of the Alaska Center for Climate Assessment and Policy. FILE PHOTO: A house in Cordova, Alaska is covered with snow and icicles in this handout photo released to Reuters January 9, 2012. REUTERS/Erv Petty/Alaska Division of Homeland Security and Emergency Management/Handout He called it "absurd." The new benchmark high came amid a spate of balmy December extremes, Thoman said, includin...

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In last 15 years, deforestation made outdoors unsafe for millions

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December 19, 20211049 Views

The tropics is becoming hotter due to a combination of warming associated with deforestation and climate change—and that can reduce the ability of outdoor workers to perform their jobs safely. Researchers reporting in the journal One Earth on December 17 estimate how many safe working hours people living in the tropics have lost due to local temperature change associated with loss of trees during the past 15 years. “There is a huge disproportionate decrease in safe work hours associated with heat exposure for people in deforested locations versus people in forestated locations just over the past 15 or 20 years,” says first author Luke Parsons, a climate researcher at Duke University. “There is a small amount of climate change that has happened over the same 15-year period, but the incr...