climate change – Page 20 – आवारा मुसाफिर

Adapt now, or suffer later

February 28, 2022646 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...

अर्जेंटीनाचिलीजलवायु परिवर्तन

Why Patagonia is rising as glaciers melt!

AWARA MUSAFIR BUREAU

February 28, 20221313 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...

जलवायु परिवर्तन

Earth’s coldest forests are shifting northward with climate change

AWARA MUSAFIR BUREAU

February 25, 2022252 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...

जलवायु परिवर्तन

Greenland Ice Sheet becoming world’s largest ‘dam’

AWARA MUSAFIR BUREAU

February 24, 20221144 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...

जलवायु परिवर्तन

Extreme wildfires are here to stay – and multiply

AWARA MUSAFIR BUREAU

February 24, 20221089 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...

जलवायु परिवर्तन

Climate change is destroying Arctic coasts

AWARA MUSAFIR BUREAU

February 18, 2022723 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 ...

जलवायु परिवर्तन

Arctic winter warming causes cold damage in the subtropics of East Asia

AWARA MUSAFIR BUREAU

February 9, 2022251 Views

Due to climate change, Arctic winters are getting warmer. An international study by UZH researchers shows that Arctic warming causes temperature anomalies and cold damage thousands of kilometers away in East Asia. This in turn leads to reduced vegetation growth, later blossoming, smaller harvests and reduced CO2 absorption by the forests in the region. The global mean temperature is increasing due to the increase in greenhouse gases in the atmosphere, but paradoxically, many regions in the mid-latitudes have experienced cold winters recently. During the past few days, the east coast of the United States experienced heavy snowfall and low temperatures as far south as Florida. Warmer Arctic winters are now also triggering extreme winter weather of this kind in East Asia, an intern...

जलवायु परिवर्तननेपाल

Climate change impacts the highest reaches of the Earth

AWARA MUSAFIR BUREAU

February 4, 20221139 Views

Everest glacier is losing decades worth of ice every year Melting and sublimation on Mount Everest’s highest glacier due to human-induced climate change have reached the point that several decades of accumulation are being lost annually now that ice has been exposed, according to a University of Maine-led international research team that analyzed data from the world’s highest ice core and highest automatic weather stations. The extreme sensitivity of the high-altitude Himalayan ice masses in rapid retreat forewarns of quickly emerging impacts that could range from increased incidence of avalanches and decreased capacity of the glacier stored water on which more than 1 billion people depend to provide melt for drinking water and irrigation. South Col Glacier ice core (8220 m) (red...

जलवायु परिवर्तनब्रिटेन

Earlier flowering raises risks for ecosystem

AWARA MUSAFIR BUREAU

February 4, 2022707 Views

Study on UK but can be applied for all other areas if larger datasets are available Climate change is causing plants in the UK to flower a month earlier on average, which could have profound consequences for wildlife, agriculture and gardeners. Using a citizen science database with records going back to the mid-18th century, a research team led by the University of Cambridge has found that the effects of climate change are causing plants in the UK to flower one month earlier under recent global warming. The researchers based their analysis on more than 400,000 observations of 406 plant species from Nature’s Calendar, maintained by the Woodland Trust, and collated the first flowering dates with instrumental temperature measurements. FILE PHOTO: A wild flower meadow is pictured ...

जलवायु परिवर्तन

Safe havens for coral reefs predicted to decline dramatically as Earth warms

AWARA MUSAFIR BUREAU

February 2, 2022256 Views

Coral reefs in every region of the world are threatened by climate change, no matter how remote or well protected. A new study predicts that climate change will result in near-total to total loss of existing locations where coral reefs are sheltered from rising ocean temperatures. Adele Dixon of the University of Leeds, U.K., and colleagues present these findings, which are at higher resolution than any previous analysis, in the open-access journal PLOS Climate on February 1, 2022. As climate change progresses, rising ocean temperatures threaten coral reefs around the world. However, in some locations, local ocean dynamics such as upwelling and strong currents were thought to buffer the effects of warming seas, providing protection to reefs. Nonetheless, it was not known if thes...