This is the sixth wave of Canadians helping out in Australia, bringing the total number to more than 160 people.
In addition to the fire smoke, Koch also captured images of a giant dust storm which spread across Australia towards the end of last week. "PyroCbs are essentially fire-induced thunderstorms".
At least 28 people have died across the country, and in New South Wales alone (NSW), more than 3,000 homes have been destroyed or damaged.
They have been driven by record-breaking hot and dry conditions in many areas of the country, creating the ideal environment for the fires to spread.
Professor Iain Colin Prentice, Chair of Biosphere and Climate Impacts and Director of the Leverhulme Centre for Wildfires, Environment and Society, Imperial College London, added: "Wildfires can't be prevented, and the risks are increasing because of climate change. The occurrence of fire is very, very sensitive to temperature", he told the Thomson Reuters Foundation.
As global temperatures soar, Australia could become so hot and dry that the country's residents could become climate refugees, US climatologist and geophysicist Michael Mann told Reuters.
Thousands more rallied late on Friday in Sydney and Melbourne, calling for the country's prime minister to be sacked and for Australia to take tougher action on global warming.
Dr Matthew Jones, Senior Research Associate at UEA's Tyndall Centre and lead author of the review, said: "Overall, the 57 papers reviewed clearly show human-induced warming has already led to a global increase in the frequency and severity of fire weather, increasing the risks of wildfire". And, if recent years are any indication, Australia's fire seasons may be worsening.
He said: "You have to consider it because of some extreme weather or conditions".
The wildfires now ravaging Australia are "unprecedented" according to analysis by the World Resources Institute, which found there were about four times more fire alerts in 2019 than in any other year in the past two decades.
About 80 per cent of Australians are concerned about climate change, an increase of five points from July.
Rising global temperatures, more frequent heatwaves and associated droughts in some regions increase the likelihood of wildfires by stimulating hot and dry conditions, promoting fire weather, which can be used as an overall measure of the impact of climate change on the risk of fires occurring. We hope that we have succeeded by giving you the full details and information.