Sunday, October 2, 2022

BC heat wave due to natural climate variability, not global warming: extreme weather expert

As the intense heat wave eases its grip in the Western Provinces, a former Canadian environmental research scientist says this weather phenomenon, while unusual, was caused by natural climate variability and occurred in the 1920s and ’30s. equivalent to heat waves.

“This heat wave was extraordinary, but it does not indicate any serious climate change issue,” extreme weather expert Madhav Khandekar told The Epoch Times. “I think it’s part of the natural climate variability that we Canadians forget.”

At the height of the heat wave, the village of Lytton in BC set a record 49.6 °C in Canada on June 29. On July 2, B.C.’s chief coroner Lisa LaPointe said there had been 719 sudden and unexpected deaths over a seven-day period. , noting that severe weather was a significant contributing factor.

Seattle, Portland and some other US cities also broke heat records, with temperatures reaching above 46 Celsius in some places.

Although some environmentalists and climate scientists claim that man-made climate change is behind such extreme weather events, Khandekar disagrees.

“Are these due to global warming or what is called human CO2 emissions? The answer is no,” he said.

“For example, during the 1930s, often referred to as the ‘dust bowl’ of North America, there were severe heat waves, and the highest temperatures in Canada occurred in July 1937 in a small town in Saskatchewan. Was recorded in: Temperature 45 degrees [Celsius],” he told.

“In July 1936, for about 10 days, Toronto, where I live now, recorded the highest temperature of 41 °C for three consecutive days without any humidity improvement. It caused the deadliest heat wave in Canada, where more than 1,100 people died, unfortunately, mostly due to dehydration and a lack of air conditioning. “

He also noted that Canada and other parts of the world regularly experience extremely cold temperatures, such as in the winter of 2018 when an “extreme cold warning” was issued for much of New Brunswick. He questions why some people hold extremely high temperature events as evidence of global warming, but ignore extreme cold events, which he says are part of all natural climate variations.

Khandekar said there is no direct link between CO2 emissions and climate change, and that climate is primarily controlled by solar variability.

“It is important to note that, shortly after World War II, human CO2 emissions began to rise worldwide due to a lot of post-war industrial activity. Interestingly, from 1947 to 1977–79, global temperatures rose by about a quarter. degree had declined.

2013 in “Are Extreme Weather Events on the Rise?” In a research paper titled. Khandekar presented his findings that the global average temperature did indeed increase after 1977 until it was “maximum in 1998 and more or less constant thereafter.” However, in 2002 it started falling again.

“During January–February 2012, local temperatures in Eastern and Central Europe fell to -40 °C, [led]for several hundred deaths in Eastern Europe. The severity of winter 2002–03 was also felt in Vietnam and the south of Bangladesh, where several hundred people died from prolonged exposure to cold weather,” the paper said, adding that in 2002 there was also considerable variation in North America. Cold and snowy winters were observed – 03, 2007-08, and 2009-10.

The paper said that many regions of South America also saw severe cold between 2008 and 2013. For example, in July 2007, snow fell in Buenos Aires, with some places in Argentina recording temperatures as low as -25 Celsius – the first snow the city had seen since 1918.

Yug Times Photos
Dr. Madhav Khandekar, former Environment Canada research scientist and extreme weather specialist. (Courtesy of Dr. Madhav Khandekar)

Khandekar said the average temperature pattern in South America and Australia is getting cooler than normal today, with southern Brazil getting frost and snow.

According to online resource Severe Weather Europe, around June 28, countries such as Argentina, Uruguay, Paraguay, Bolivia and Brazil were reported to be suffering from “extreme and unprecedented cold outbreaks with historic snowfall in some areas”. “A large area of ​​the continent was experiencing 15 degrees Celsius cooler temperatures than normal.”

In contrast to global warming, Khandekar believes that the Sun is going to enter a “solar grand minimum” in the near future, which means “we are headed for a colder climate in the next 10 to 20 years.” “

He further added that it is important for Canadians to have access to global average temperature data to understand the full picture of climate issues.

“If more Canadians look at these average temperature trends, they will understand that climate change is very complex. CO2 concentrations may be increasing, but it is not leading to a warming, continuing warming of Earth’s climate.”



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