climate change – Page 12 – आवारा मुसाफिर

Moving species emerges as last resort as climate warms

January 20, 2023759 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

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January 18, 20231124 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...

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

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January 12, 20231045 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...

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Uneven wetting affecting Tibetan Plateau

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December 27, 2022846 Views

Climate change is causing diverse variations in the thawing of frozen ground The Tibetan Plateau has experienced prominent warming and wetting since the mid-1990s that has altered the thermal and hydrological properties of its frozen ground. In a new study, published in Advances in Atmospheric Sciences, scientists used the Community Land Surface Model to uncover that the dual effect of this wetting and the projected increase in precipitation over the Tibetan Plateau in the future is becoming a critical factor in determining the thermodynamics of the frozen ground. The lead author of the study, Dr Xuewei Fang from the School of Atmospheric Sciences at Chengdu University of Information Technology in China, explains that “In the face of the greatest increase in the occurrence frequ...

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Climate change threatens centuries-old oases in Morocco

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December 26, 2022919 Views

Residents of the oasis of Alnif say they can’t remember a drought this bad: The land is dry. Some wells are empty. Palm groves that date back more than 100 years are barren. Home to centuries-old oases that have been a trademark of Morocco, this region about 170 miles southeast of Marrakesh is reeling from the effects of climate change, which has created an emergency for the kingdom’s agriculture. Nomadic herders guide their sheep in search for food to graze near Tinghir, Morocco, Monday, Nov. 28, 2022. (AP Photo/Mosa'ab Elshamy) Among those affected is Hammou Ben Ady, a nomad in the Tinghir region who leads his flock of sheep and goats in search of grazing grass. The drought forced him to rely on government handouts of fodder. November is usually a cold, wet month in Alnif, b...

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As climate clock ticks, aviator races to photograph glaciers

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December 24, 2022735 Views

Chunks of ice float in milky blue waters. Clouds drift and hide imposing mountaintops. The closer you descend to the surface, the more the water roars — and the louder the “CRACK” of ice, as pieces fall from the arm of Europe’s largest glacier. The landscape is vast, elemental, seemingly far beyond human scale. The whole world, it seems, lies sprawled out before you. Against this outsized backdrop, the plane carrying the man who chases glaciers seems almost like a toy. Garrett Fisher, an American aviator and adventurer, looks out the window of his plane while on a mission to photograph glaciers in Norway, on July 29, 2022. (AP Photo/Bram Janssen) “No one’s there,” the man marvels. “The air is virtually empty.” This is Garrett Fisher’s playground — and, you quickly realize, his...

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Glacier melting linked to shifting westerlies and likely to accelerate

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December 15, 2022832 Views

The combination of global atmospheric warming and westerly winds shifting toward the poles will likely speed up the recession of mountain glaciers in both hemispheres, according to a UMaine study. Mountain glaciers freeze and gain mass when the climate cools, and melt and lose mass when the climate warms. The extent to which the fluctuations in mountain glaciers are reflective of local, regional and even hemispheric climate variations, however, is less clear, which has made it more difficult for scientists to use glacial data to interpret past climate dynamics and make predictions for the future. A team of researchers from the University of Maine conducted a National Science Foundation-funded study evaluating how atmospheric conditions are reflected in the mass fluctuations of m...

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Ladakh herders endeavor to save future on climate frontier

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December 14, 2022993 Views

Nomad Tsering Angchuk vows to stay put in his remote village in India’s Ladakh region. His two sons and most of his fellow villagers have migrated to a nearby urban settlement but Angchuk is determined to herd his flock of fine cashmere-producing goats in the treeless Kharnak village, a hauntingly beautiful but unforgiving, cold mountainous desert. Dolma Angmo, wife of nomad Tsering Angchuk, attends her hardy Himalayan goats that produce cashmere in the remote Kharnak village in the cold desert region of Ladakh, India, Sunday, Sept. 17, 2022. (AP Photo/Mukhtar Khan) The 47-year-old herds 800 sheep and goats and a flock of 50 Himalayan yaks in Kharnak. In 2013, he migrated to Kharnakling, an urban settlement in the outskirts of a regional town called Leh but returned a year later,...

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New travel awards to address climate change, protect nature and support communities

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December 1, 2022245 Views

Riyadh-based Sustainable Tourism Global Center launches awards at WTTC Global Summit The Riyadh-based Sustainable Tourism Global Center (STGC) has launched its first global awards, the “Sustainable Travel Awards”, to recognize individuals and organizations that address climate change, protect nature and support communities. In total there will be 10 awards that will be awarded on an annual basis to recognize high impact solutions that are already implemented and able to demonstrate measurable positive impact. There will be three awards each in the categories of climate, nature and communities with one individual award granted to the person who is identified as a true champion of sustainable travel. The new awards were announced during the 22nd Annual WTTC Global Summi...

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Limiting global warming now can preserve valuable freshwater resource

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November 29, 2022226 Views

Study highlights wide-scale carbon mitigation strategies to maintain snowpack throughout Americas Snowcapped mountains not only look majestic – They’re vital to a delicate ecosystem that has existed for tens of thousands of years. Mountain water runoff and snowmelt flows down to streams, rivers, lakes, and oceans – and today, around a quarter of the world depends on these natural “water towers” to replenish downstream reservoirs and groundwater aquifers for urban water supplies, agricultural irrigation, and ecosystem support. But this valuable freshwater resource is in danger of disappearing. The planet is now around 1.1 degrees Celsius (1.9 degrees Fahrenheit) warmer than pre-industrial levels, and mountain snowpacks are shrinking. Last year, a study co-led by Alan Rhoades and ...