climate change – Page 19 – आवारा मुसाफिर

Ultrafine dust might cause weather extremes

June 1, 20221086 Views

KIT researchers prove global increase of ultrafine particles from exhaust gases of fossil fuels and warn of major weather effects Strong precipitation or extreme drought – the frequency of extreme weather events is increasing worldwide. Existing climate models, however, do not adequately show their dynamics. Researchers of Karlsruhe Institute of Technology (KIT) assume that ultrafine particles in the atmosphere have a significant impact on cloud physics and, hence, on weather. Their aircraft measurements confirm an increase in particle number emissions in spite of a decreasing coarse fine dust concentration and blame it to the combustion of fossil fuels in exhaust gas cleaning systems. Junkermann piloted KIT’s ultralight aircraft D-MIFU, the smallest manned research aircraft in the ...

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Security concerns, lack of support stall Africa’s Green Wall

AWARA MUSAFIR BUREAU

May 27, 20221025 Views

A series of complex challenges, including a lack of funding and political will as well as rising insecurity linked to extremist groups al-Qaida and the Islamic State in Burkina Faso, are obstructing progress on Africa’s Great Green Wall, according to experts involved in the initiative. There have been some modest gains for the project, which plans to build an 8000-kilometer (4970-mile) long forest through 11 nations across the width of Africa to hold back the ever-growing Sahara Desert and fend off climate change impacts, but many involved with the plan are calling for renewed momentum to combat both insecurity and environmental decline. Just 4 million hectares (9.9 million acres) of land has been afforested since work on the Green Wall began 15 years ago — a mere 4% of the program’...

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Oceans are hotter, higher and more acidic, climate report warns

AWARA MUSAFIR BUREAU

May 18, 2022295 Views

The world's oceans grew to their warmest and most acidic levels on record last year, the World Meteorological Organization (WMO) said on Wednesday, as United Nations officials warned that war in Ukraine threatened global climate commitments. Oceans saw the most striking extremes as the WMO detailed a range of turmoil wrought by climate change in its annual "State of the Global Climate" report. It said melting ice sheets had helped push sea levels to new heights in 2021. FILE PHOTO: Dead fish appear on the beaches of La Manga del Mar Menor, Murcia, Spain, August 21, 2021. REUTERS/Eva Manez "Our climate is changing before our eyes. The heat trapped by human-induced greenhouse gases will warm the planet for many generations to come," said WMO Secretary-General Petteri Taalas in a st...

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Tuvalu, sinking in the Pacific, fears becoming a superpower ‘pawn’

AWARA MUSAFIR BUREAU

May 14, 2022341 Views

Tuvalu fears that climate change, an existential threat to the Pacific nation, is being forgotten and it worries that fellow island nations could become "pawns" in a global competition between China and the United States, its foreign minister said. Simon Kofe told Reuters the superpower competition was a concern, distracting attention from climate change, the priority for Pacific islands endangered by rising sea levels. FILE PHOTO: Tuvalu's Foreign Minister Simon Kofe gives a COP26 statement while standing in the ocean in this handout picture taken in Funafuti, Tuvalu, November 8, 2021. "It is important that the Pacific handles these issues carefully," he said in an interview on Thursday. "The last thing we want is that countries in the Pacific are used against each other or used...

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World could see 1.5C of warming in next five years, WMO reports

AWARA MUSAFIR BUREAU

May 10, 2022422 Views

The world faces a 50% chance of warming of 1.5 degrees Celsius above pre-industrial levels, if only briefly, by 2026, the World Meteorological Organization (WMO) said on Monday. That does not mean the world would be crossing the long-term warming threshold of 1.5C (2.7 degrees Fahrenheit), which scientists have set as the ceiling for avoiding catastrophic climate change. But a year of warming at 1.5C could offer a taste of what crossing that long-term threshold would be like. "We are getting measurably closer to temporarily reaching the lower target of the Paris Agreement," said WMO Secretary-General Petteri Taalas, referring to climate accords adopted in 2015. The likelihood of exceeding 1.5C for a short period has been rising since 2015, with scientists in 2020 estimatin...

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Its getting tougher for glaciers to recover from climate warming

AWARA MUSAFIR BUREAU

May 10, 2022358 Views

A team of scientists from Stockholm University and University of California Irvine investigated whether the Petermann Ice Shelf in northern Greenland could recover from a future breakup due to climate change. They used a sophisticated computer model to simulate the potential recovery of the ice shelf. “Even if Earth’s climate stopped warming, it would be difficult to rebuild this ice shelf once it has fallen apart”, says Henning Åkesson, who led the study at Stockholm University. “If Petermann’s ice shelf is lost, we would have to go ‘back in time’ towards a cooler climate reminiscent of the period before the industrial revolution to regrow Petermann”, Åkesson says. A crack In Petermann Ice Shelf observed by an international team of scientists during the Oden Expedition in 2019. ...

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Future super cyclones would expose more people to extreme flooding

AWARA MUSAFIR BUREAU

May 9, 20221104 Views

Research shows, devastating impact on people in South Asia in future years At a time, when India’s east coast is bracing for cyclone Asani, a new study has revealed that super cyclones, the most intense form of tropical storm, are likely to have a much more devastating impact on people in South Asia—including India and Bangladesh—in future years. The international research, led by the University of Bristol, looked at the 2020 Super Cyclone Amphan – the most costly cyclone to make landfall in South Asia – and projected its consequences in different scenarios of sea level rise due to global warming. Its findings, published in the Royal Meteorological Society journal Climate Resilience and Sustainability, showed if the release of greenhouse gases into the atmosphere continues at...

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Global bird populations steadily declining

AWARA MUSAFIR BUREAU

May 8, 20221181 Views

Study conclusion mirrors shocking losses previously shown in North America Staggering declines in bird populations are taking place around the world. So concludes a study from scientists at multiple institutions, published in the journal Annual Review of Environment and Resources. Loss and degradation of natural habitats and direct overexploitation of many species are cited as the key threats to avian biodiversity. Climate change is identified as an emerging driver of bird population declines. "We are now witnessing the first signs of a new wave of extinctions of continentally distributed bird species," says lead author Alexander Lees, senior lecturer at Manchester Metropolitan University in the United Kingdom and also a research associate at the Cornell Lab of Ornithology. "Avian d...

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Emperor Penguin at serious risk of extinction due to climate change

AWARA MUSAFIR BUREAU

May 6, 2022511 Views

The emperor penguin, which roams Antarctica's frozen tundra and chilly seas, is at severe risk of extinction in the next 30 to 40 years as a result of climate change, an expert from the Argentine Antarctic Institute (IAA) warned. The emperor, the world's largest penguin and one of only two penguin species endemic to Antarctica, gives birth during the Antarctic winter and requires solid sea ice from April through December to nest fledgling chicks. If the sea freezes later or melts prematurely, the emperor family cannot complete its reproductive cycle. "If the water reaches the newborn penguins, which are not ready to swim and do not have waterproof plumage, they die of the cold and drown," said biologist Marcela Libertelli, who has studied 15,000 penguins across two colonies i...

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Scientists identify the most extreme heatwaves ever recorded globally

AWARA MUSAFIR BUREAU

May 6, 2022590 Views

A new study has revealed the most intense heatwaves ever across the world – and remarkably some of these went almost unnoticed decades ago. The research, led by the University of Bristol, also shows heatwaves are projected to get hotter in future as climate change worsens. The western North America heatwave last summer was record-breaking with an all-time Canadian high of 49.6 °C in Lytton, British Columbia, on June 29, an increase of 4.6 °C from the previous peak. The new findings, published today in Science Advances, uncovered five other heatwaves around the world which were even more severe, but went largely underreported. Lead author, climate scientist Dr Vikki Thompson at the University of Bristol, said: “The recent heatwave in Canada and the United States shocked the...