जलवायु परिवर्तन – Page 11 – आवारा मुसाफिर

Human-wildlife conflicts rising worldwide with climate change

March 7, 2023924 Views

Research on the impacts of climate change often considers its effects on people separately from impacts on ecosystems. But a new study is showing just how intertwined we are with our environment by linking our warming world to a global rise in conflicts between humans and wildlife. The research, led by scientists at the University of Washington’s Center for Ecosystem Sentinels and published Feb. 27 in Nature Climate Change, reveals that a warming world is increasing human-wildlife conflicts. “We found evidence of conflicts between people and wildlife exacerbated by climate change on six continents, in five different oceans, in terrestrial systems, in marine systems, in freshwater systems – involving mammals, reptiles, birds, fish and even invertebrates,” said lead author Briana Abra...

अमेरिकाजलवायु परिवर्तन

Warm Canadian winter threatens Algonquin ice-fishing traditions

AWARA MUSAFIR BUREAU

February 28, 2023931 Views

Most winters, at least once a week, Mike Diabo will snowmobile to the shores of one of his local lakes in southern Quebec, carry his fishing gear across the frozen surface, and drill down through the ice to reveal the dark water beneath. There he'll fish for northern pike, bass, trout, and whitefish to supplement his family's diet, continuing the traditions of his Anishinabe ancestors, part of the Algonquin First Nation of eastern Canada. But this year ice-fishing season started late, delayed by a warm winter and fluctuating temperatures that left the ice on Bitobi and Cedar Lakes - his two favourite haunts - slushy and dangerously thin until a cold snap finally arrived in early February. This winter is on track to be among the five warmest in southern Quebec since records began ...

अंटार्कटिकाजलवायु परिवर्तन

Warm water melts weak spots on Antarctica’s ‘Doomsday Glacier’

AWARA MUSAFIR BUREAU

February 16, 2023847 Views

Scientists studying Antarctica's vast Thwaites Glacier - nicknamed the Doomsday Glacier - say warm water is seeping into its weak spots, worsening melting caused by rising temperatures, two papers published in Nature journal showed on Wednesday. Thwaites, which is roughly the size of Florida, represents more than half a meter (1.6 feet) of global sea level rise potential, and could destabilize neighboring glaciers that have the potential to cause a further three-meter (9.8-foot) rise. An Icefin is seen in the water as scientists work in the field at the Thwaites Glacier in Antarctica in this undated handout picture obtained by Reuters on February 14, 2023. Becka Bower/Cornell University/Handout via REUTERS As part of the International Thwaites Glacier collaboration - the biggest ...

अंटार्कटिकाजलवायु परिवर्तन

Record low sea ice cover in the Antarctic

AWARA MUSAFIR BUREAU

February 11, 2023844 Views

Sea ice extent in the Southern Ocean now the lowest since the beginning of satellite observation forty years ago There is currently less sea ice in the Antarctic than at any time in the forty years since the beginning of satellite observation: in early February 2023, only 2.20 million square kilometres of the Southern Ocean were covered with sea ice. Researchers from the Alfred Wegener Institute and the University of Bremen analyse the situation for the Sea Ice Portal. January 2023 had already set a new record for its monthly mean extent (3.22 million square kilometres), even though the melting phase in the Southern Hemisphere continues until the end of February. The current expedition team on board RV Polarstern has just reported virtually ice-free conditions in its current research...

जलवायु परिवर्तन

New ice core analysis shows sharp Greenland warming spike

AWARA MUSAFIR BUREAU

January 20, 2023982 Views

A sharp spike in Greenland temperatures since 1995 showed the giant northern island 2.7 degrees (1.5 degrees Celsius) hotter than its 20th-century average, the warmest in more than 1,000 years, according to new ice core data. Until now Greenland ice cores -- a glimpse into long-running temperatures before thermometers -- hadn’t shown much of a clear signal of global warming on the remotest north central part of the island, at least compared to the rest of the world. But the ice cores also hadn’t been updated since 1995. Newly analyzed cores, drilled in 2011, show a dramatic rise in temperature in the previous 15 years, according to a study in Wednesday’s journal Nature. “We keep on (seeing) rising temperatures between 1990s and 2011,” said study lead author Maria Hoerhold, a glaciol...

जलवायु परिवर्तन

Moving species emerges as last resort as climate warms

AWARA MUSAFIR BUREAU

January 20, 2023712 Views

In a desperate effort to save a seabird species in Hawaii from rising ocean waters, scientists are moving chicks to a new island hundreds of miles away. Moving species to save them — once considered taboo — is quickly gaining traction as climate change upends habitats. Similar relocations are being suggested for birds, lizards, butterflies and even flowers. Concerns persist that the novel practice could cause unintended harm the same way invasive plants and animals have wreaked havoc on native species. In this photo provided by the Pacific Rim Conservation, wildlife workers relocate Tristram’s storm petrels on Hawaii’s Tern Island, on March 29, 2022. (L. Young/Pacific Rim Conservation via AP) But for the Tristram’s storm petrels on northeastern Hawaii’s Tern Island, which is j...

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Climate change likely to uproot more Amazon trees

AWARA MUSAFIR BUREAU

January 18, 20231093 Views

New study connecting extreme thunderstorms and tree deaths suggests the tropics will see more major blowdown events in a warming world Tropical forests are crucial for sucking up carbon dioxide from the atmosphere. But they’re also subject to intense storms that can cause “windthrow” – the uprooting or breaking of trees. These downed trees decompose, potentially turning a forest from a carbon sink into a carbon source. Members of NGEE-Tropics visit what they named “Blowdown Gardens,” an area that experienced windthrow near one of their field sites in the Amazon. Photo Credit: Jeff Chambers/Berkeley Lab A new study finds that more extreme thunderstorms from climate change will likely cause a greater number of large windthrow events in the Amazon rainforest. This is one of the fe...

जलवायु परिवर्तन

Last year tied as world’s fifth-warmest on record, scientists say

AWARA MUSAFIR BUREAU

January 14, 2023716 Views

Last year was the world's joint fifth-warmest on record and the last nine years were the nine warmest since pre-industrial times, putting the 2015 Paris Agreement's goal to limit global warming to 1.5C in serious jeopardy, U.S. scientists have said. Last year tied with 2015 as the fifth-warmest year since record-keeping began in 1880, NASA said. That was despite the presence of the La Nina weather pattern in the Pacific Ocean, which generally lowers global temperatures slightly. The world's average global temperature is now 1.1C to 1.2C higher than in pre-industrial times. FILE PHOTO: The sun rises behind the London skyline as a second heatwave is predicted for parts of the country, Richmond Park, London, Britain, August 8, 2022. REUTERS/Toby Melville The U.S. National Oceanic...

जलवायु परिवर्तन

Vulnerability, resilience, and hopeful potential in world’s tallest trees

AWARA MUSAFIR BUREAU

January 12, 2023992 Views

Redwoods and Climate Change Scientists from Cal Poly Humboldt conducted a rangewide analysis of coast redwood (Sequoia sempervirens) to examine growth trends and understand how these trees are responding to recent environmental changes. They found that redwoods have varying sensitivity to drought, and that rising temperatures may affect tree performance in unexpected ways—results that are both concerning and hopeful. Coastal fog helps alleviate drought stress. Nighttime fog, in particular, is one of the best predictors of redwood growth efficiency. Phot Credit: (Courtesy of Steve Sillett) The study, published in Forest Ecology and Management, was led by Cal Poly Humboldt Forestry Professor Stephen C. Sillett, the Kenneth L. Fisher Chair in Redwood Forest Ecology. Sillett’s team w...

जलवायु परिवर्तन

‘Feels like summer’: Warm winter breaks temperature records in Europe

AWARA MUSAFIR BUREAU

January 5, 2023126 Views

Record-high winter temperatures swept across parts of Europe over the new year, bringing calls from activists for faster action against climate change while offering short-term respite to governments struggling with high gas prices. Hundreds of sites have seen temperature records smashed in the past days, from Switzerland to Poland to Hungary, which registered its warmest Christmas Eve in Budapest and saw temperatures climb to 18.9 degrees Celsius (66.02°F) on Jan. 1. In France, where the night of Dec. 30-31 was the warmest since records began, temperatures climbed to nearly 25C in the southwest on New Year's Day while normally bustling European ski resorts were deserted due to a lack of snow. A cable car is seen on mountain Jahorina in Sarajevo, Bosnia and Herzegovina January 4,...