Tag: Climate Change

Is Your Neighborhood The Hottest In Peterborough?

On August 15th 2021 it was 23.9°C at the Peterborough Municipal Airport. By all respects, an average summer temperature. If you looked at a thermometer outside your house though, it might paint a much different picture. In the downtown core and areas along Lansdowne St. temperatures reached as high as 40°C. This represents over 15°C temperature difference! What is happening and how can it be stopped?

The urban heat island is a phenomenon we’ve long known about. It occurs when natural land cover such as forest or meadows are replaced with surfaces that retain heat such as asphalt, concrete or pavement. These surfaces then radiate the heat back out into the local environment, warming the surrounding area. The effect can increase the cost of heating, and put elderly or other vulnerable citizens at risk of heat stroke, and even death.

The urban heat island effect often puts the most vulnerable populations at risk. Some of Peterborough’s lowest income census areas have the highest recorded temperatures. You’ll notice on the map that areas directly south and north of the downtown which are characteristic as lower income neighborhoods, have some of the highest recorded temperatures, while some of Peterborough’s more affluent neighborhoods have much lower recorded temperatures.

Image #1 characterizes a neighborhood south of downtown. Census Canada considers between 35% and 43% of the population to be low income. This neighborhood is one of the hottest in Peterborough, coming in at a 15°C temperature deviation. Meanwhile Monaghan Ward represented in image #2 only recorded a 5°C temperature deviation. It is clear that land cover and tree canopy have a huge impact on temperature deviation. With the additional pressure of climate change, these deviations are likely to become more pronounced over time.

What can be done about urban heat though? Luckily we have some solutions! Planting trees is once again, a major winner in this regard. Not only does tree planting decrease average temperatures, it can lower heating and cooling bills year round for residents, overall a huge win for the climate. Removing asphalt and other “high heat” surfaces can also benefit neighborhoods, replacing asphalt with grass is even a viable solution for combating urban heat. Depave projects around the country have made major inroads in this regard, and perhaps focusing on lower income neighborhoods could have an additional impact.

In all, reducing the urban heat island effect gives us one more incentive to restore ecosystems, plant trees, and protect our natural areas. Perhaps years from now, when you look at the thermometer outside your house, it may more accurately reflect the temperature across our city.

Data provided by USGS through LANDSAT 8.

A Little Toolkit For Confronting Climate Inaction

2019 was heralded as the year that ended climate change denialism. Enter a new era, where we must face a new threat: inaction on climate change.

Just over a week ago I published a short writeup on my twitter feed explaining how an enormous fountain in our town was an outsised contributor to greenhouse gas emissions in our city. This was due to the sheer volume of electicity used to power the monstrous pumps that spewed a steady stream of water 6 stories into the air.

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This New Sticker Drives Doug Ford Nuts

With the newly legislated carbon tax propaganda stickers, here at steward’s notes I decided to tell the real story (according to the Nobel prize winner this year)! These vinyl die cut stickers can be placed “at your discretion” anywhere you choose! Share with your friends and relatives! Head on over to the shop page and I’ll get your stickers in the mail ASAP. Profits will be donated to environmental charities in Ontario.

Its no secret, placing a price on carbon is the most simple and effective way to lower carbon emissions. Even Stephen Harper agreed while he was Prime Minister. The current plan is not perfect, but it is better than anything proposed by the Federal or Provincial Conservatives. This bumper sticker is nothing but a statement of the objective truth.

Sorry for the clickbait 🙂

What should Peterborough do in this Climate Emergency?

With the recent news of Kingston and possibly Guelph declaring a climate emergency, I began wondering what actions a city such as them or even Peterborough could do to begin the process of eliminating our climate emissions. Recently I came across the Drawdown proposal. It includes a list of 80 solutions that would reduce global emissions drastically while at the same time creating a better and more equitable future for humanity. All while creating a net global financial savings of nearly 50 trillion USD.

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