Why Wildfires Raging in Canada’s Eastern Province of Nova Scotia?

Fri Jun 02 2023
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NOVA SCOTIA, Canada: In spite of the fact that wildfires are typical in Canada’s western provinces, the eastern province of Nova Scotia is currently experiencing its worst wildfire season ever, causing the federal government to dispatch the military there on Thursday.

This year, roughly 200 wildfires in the Atlantic province have consumed more than 19,000 hectares of land and uprooted more than 25,000 people. There were just 152 fires that consumed 3,390 hectares in 2022, Reuters said.

According to federal Public Safety Minister Bill Blair, this year has seen the scorching of almost 2.7 million hectares across Canada or more than five million football fields.

HOW UNUSUAL ARE WILDFIRES IN NOVA SCOTIA?

The North Atlantic Ocean, which is situated on Canada’s eastern shore, has a significant impact on Nova Scotia’s climate, bringing more humidity and more mild temperatures than in many other regions of the nation. Although fires are not uncommon, they are typically considerably smaller than those in the west.

The area is covered with what is referred to as the “Acadian Forest,” which is made up of both evergreen conifers and broadleaf trees like sugar maples. Because their branches and leaves are higher above the ground and their leaves store more moisture, broadleaf trees are less combustible than evergreens.

Compared to forests in western Canada, the Acadian forest is far less prone to major wildfires.

WHAT’S CAUSING THEM?

This winter’s minimal snowfall in Atlantic Canada was followed by an unusually dry April. According to Michael Carter of the Weather Network, just 120 millimetres of rain fell in Halifax, the capital of Nova Scotia, between March and May, or about one-third of the usual.

On Thursday, a searing heat wave in late May raised the temperature in Halifax to 33 degrees Celsius, around 10 degrees higher than usual.

It is thought that human action unwittingly starts the majority of the wildfires.

There is also speculation, according to Ellen Whitman, a research scientist with the Canadian Forest Service, that trees felled during Hurricane Fiona, which hit Atlantic Canada in September 2022, or killed by a pest infestation in the forest, may be providing more fuel for wildfires than usual. However, further research is needed to confirm this theory.

WHAT ROLE IS CLIMATE CHANGE PLAYING?

Whitman said that while it is challenging to assess the effects of climate change on a single fire season, temperatures in Atlantic Canada have been significantly higher than normal, and experts anticipate that trend to continue in the years to come.

More rain is predicted for coastal locations due to climate change, which should lower the danger of wildfires. However, a warmer atmosphere is more effective at removing moisture from soils, which raises the fire risk.

Research indicates that North American fire seasons are lengthening, making widespread spring fires over the whole country of Canada unprecedented.

WHAT’S THE OUTLOOK FOR THE FIRES?

A stretch of cooler, wetter air is predicted to move through Atlantic Canada on Friday, bringing much-needed respite. According to the longer-term forecast from The Weather Network, summertime temperatures in Nova Scotia will be a little bit higher than average.

If wildfires do continue, the economic impact is anticipated to be minimal since, unlike western Canada, the region has no onshore oil and gas facilities.

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