Showing posts with the label Climate Change

John Pomeroy Has Seen the Okanagan’s Hotter, Drier Future

THE TYEE The noted hydrologist projects a harsh shift in the region’s climate and water supply.

Fire in the desert

PNAS Fueled by invasive grasses and climate change, desert fires are growing larger and more dangerous.  Story  here. Native ecosystems are losing the race against invasives, with potentially dangerous consequences for desert cities like Tucson. The city’s outskirts are shown here in the midst of the 2020 Bighorn Fire, which came alarmingly close to foothill homes. Image credit: Unsplash/Frankie Lopez.

Giant Sequoias Are in Big Trouble. How Best to Save Them?

YaleEnvironment360 by Jim Robbins A  Daniel G Rego  photo. California’s ancient sequoias — some of which have stood more than 1,000 years — are facing an existential threat from increasingly intense wildfires linked to climate change. But federal efforts to thin forests to reduce fire risks are drawing pushback from conservation groups. Story here.

Canada burns - Canada’s relentless battle with record heat and devastating wildfires

Jamie Sandison - Canada's National Observer My analysis of data from the National Oceanic and Atmospheric Administration reveals a staggering revelation — more than 150 monthly temperature records have been broken across Canada this year. Details here.

Danielle Smith Rips Off the Mask

The Tyee Alberta Premier, Danielle Smith. Her combative, gaslighting persona was put away for the election campaign. It was back this week.  Details here.

Climate change more than doubled the likelihood of extreme fire weather conditions in Eastern Canada

World Weather Attribution During May and June 2023 Canada witnessed exceptionally extreme fire-weather conditions, leading to extensive wildfires that burned over 13 million hectares. Story here.

Extreme heat in Canada, US, Europe and China in July 2023 made much more likely by climate change

WORLD WEATHER ATTRIBUTION Following a record hot June, large areas of the US, Canada, Mexico, Southern Europe and China experienced extreme heat in July 2023, breaking many local high temperature records. Details here. Please also read;  Climate crisis made spate of Canada wildfires twice as likely, scientists find

New research method determines health impacts of heat and air quality

Peer-Reviewed Publication UNIVERSITY OF WATERLOO Even moderate temperature increases can cause more emergency hospital visits and deaths. Story here.

Is Earth ready for some sunblock?

 MOTHER CORP News Big ideas for slowing climate change — and big risks, too



Increased risk of extreme rainfall due to warming

Journal:  Nature Climate warming is causing a decrease in snowfall and increase in rainfall at high altitudes in the Northern Hemisphere, and is predicted to increase the risk of extreme rainfall, suggests a study published in  Nature .  The intensity and frequency of extreme precipitation events is expected to increase as global warming continues to affect the planet. Of particular concern are extremes in rainfall, which often cause more damage than similar snowfall events due to their instantaneous runoff, increasing the risk of floods, which can cause infrastructure damage and landslides. Precisely how increases in global temperature will affect extreme rainfall events remains unclear.  To assess how climate change might be driving a shift in precipitation patterns, Mohammed Ombadi and colleagues combined data from climate observations from between 1950 and 2019 with future projections, up to 2100, taken from Earth system models. Their results suggest that warming is causing an incr

United in Science: We are heading in the wrong direction

Geneva, 13 September 2022 (WMO) - Climate science is clear: we are heading in the wrong direction, according to a new multi-agency report coordinated by the World Meteorological Organization (WMO), which highlights the huge gap between aspirations and reality. DETAILS HERE.

Crab populations are crashing. Could losing their sense of smell be one of the important reasons why?

University of Toronto Thayne Tuason took this shot at Ocean Shores WA in 2020. He labelled it, "dungeness crab die off..."  and commented, "Some people might contend they were just "molting", but these crabs looked mostly dead to me and not just a bunch of empty shells as would have been the case if it was them naturally shedding their exoskeleton.      A new U of T Scarborough study finds that climate change is causing a commercially significant marine crab to lose its sense of smell, which could partially explain why their populations are thinning. Story here.

Oil Company Gave $200K to Group Accusing Pipeline Opponents of Taking Secret Money

DeSmog Blog Alberta-based Indian Resource Council quietly received funding from CNRL, corporate documents reveal. Details here.

Record 2021 heat wave could become once-per-decade event

A study offers new insights into the record 2021 Western North America heat wave Combined unusual weather systems, supercharged by climate change COLUMBIA CLIMATE SCHOOL The heat wave that hammered western North America in late June and early July 2021 was not just any midsummer event. Over nine days, from British Columbia through Washington and Oregon and beyond, it exceeded average regional temperatures for the period by 10 degrees C and, on single days in some locales, by an astounding 30 C. Among many new daily records, it set a new national benchmark for all of Canada, at 121.3 F in Lytton, British Columbia. The next day, the entire town burned down amid an uncontrollable wildfire—one of many sparked by the hot, dry weather. Across the region, at least 1,400 people died from heat-related causes. More here.

North American boreal trees show a decline in the survival of saplings in response to warming or reduced rainfall.

Nature  Four separate papers exploring how forests and tree species respond to global changes — such as rising temperatures — are published in Nature this week. The studies highlight some of the challenges forests in North America and the Amazon may face in response to climate change. Temperate deciduous tree with a dendrometer band, of the type used in the study, in the ForestGEO plot at the Smithsonian Conservation Biology Institute in Front Royal, VA. Credit: Kristina J. Anderson-Teixeira A study of nine North American boreal tree species, including maples, firs, spruces and pines, shows a decline for all species in the survival of saplings in response to warming or reduced rainfall. In a five-year open-air field experiment, Peter Reich and colleagues found that fir, spruce and pine species abundant in southern boreal forests had the largest reductions in growth and survival due to changes in climate.  Temperate deciduous tree with a dendrometer band, of the type used in the study,

Takin’ it to the bank

The National Observer Trouble’s brewing for RBC. Canada’s climate movement is converging on the bank as its common target for pressure campaigns.   Details here. RELATED: How Ethical are Ethical Funds?   "Conscientious" investments & the tar sands connection.

Unsettling currents: Warm water flowing beneath Antarctica’s ’Doomsday Glacier'

Science Daily The calving front of Thwaites Ice Shelf looking at the ice below the water's surface as seen from the NASA DC-8 on Oct. 16, 2012.  Data from underneath Thwaites Glacier, also known as the Doomsday Glacier. Story here.

Greener northern landscapes under climate change no help to endangered caribou

Proceedings of the Royal Society The Woodland Caribou. Photo by Steve Forrest.   Globally, climate change and habitat loss are increasing “global greening.” While these changes benefit some species, animals such as woodland caribou may suffer in a greener world. We studied links between habitat alteration (e.g. forest cutting), primary productivity, moose, wolves and caribou across part of the Canadian Boreal forest. By studying all these components simultaneously, we found that habitat alteration led to more productivity, which in turn produced more moose and wolves, and precipitated caribou declines. Species like caribou, which are adapted to low productivity environments, however, are not expected to do well in a greener world. Find the full study here.

Someday, even wet forests could burn due to climate change

PHYS ORG A wet "sclerophyll" mixed forest. Might even it be vulnerable in a warming world?  Photo by Hagasfagas. Millions of years ago, fire swept across the planet, fuelled by an oxygen-rich atmosphere in which even wet forests burned, according to new research by CU Boulder scientists. Story here.