Sign In or Create an Account.

By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy

Climate

The 5 Big Questions About the 2023 Wildfire Smoke Crisis

We have answers.

•
A question mark amid a wildfire.
Heatmap Illustration/Getty Images

The eastern and northern United States are suffering under a hazy, poisonous cloud of wildfire smoke, produced by out-of-control forest fires in Quebec and Nova Scotia. The most toxic soot and ash are sitting virtually on top of North America’s most densely populated corridor, clouding the air in New York City; Toronto; Ottawa; Philadelphia, Washington, D.C.; and Norfolk, Virginia.

Air pollution alerts are in effect across the United States and Canada, affecting roughly 150 million people.

This is Heatmap’s set of commonly asked questions about the crisis. We’ll keep it updated throughout the event.

Why is it so smoky now?

Hundreds of wildfires have raged across northern Quebec for the past few weeks, driven by unusually warm and dry conditions.

Then on Monday, a low-pressure system surrounded by counterclockwise winds moved just off New England’s coast. Its strong, dry gusts fanned the flames in Canada, then pushed the resulting smoke and ash into the eastern United States.

Intense Canadian fires are unusual this early in the season, but the fires this year were fed by a warm spring and drought-like condition, Kent Moore, an atmospheric-physics professor at the University of Toronto, told me. Because the fires took hold before the vegetation could “green up” for the spring, the conflagrations grew more rapidly than they normally would, he said.

The dry conditions also helped the fires ignite the soil itself. “Because the soil was so dry — because of the dry winter and the dry spring — the fire got into the ground,” he said. “The vegetation below ground started to burn, and those are much harder to put out.”

How does the current crisis compare to previous events?

This is likely one of America’s worst days for air pollution in several decades, in terms of the number of people affected and the severity of the exposure, Marshall Burke, an economist and sustainability professor at Stanford, told me.

“It’s pretty off the chart,” Burke said. Wildfire smoke is affecting New York City much more acutely — and much earlier in the year — than it has at any time since 2006, when contemporary air-pollution data began to be kept.

What’s the connection between the 2023 Canadian wildfires and climate change?

It is difficult to attribute a single unprecedented event to climate change, and the climatology of wildfires in eastern North America is particularly challenging. (Climate change has more clearly worsened wildfires out West.) “This is probably an unlucky year for Canada, as far as wildfires go,” Moore, the atmospheric physicist, said.

But wildfires will become more likely across Canada as the climate changes, he said. And while climate change should broadly increase rainfall across Canada, it will also increase the likelihood of heat waves and more extreme spring and summer temperatures, which can make wildfires more likely.

“Nova Scotia has always had wildfires. It’s just they’ve had more wildfires this year than they have on average for the whole year,” he said. “There’s always going to be wildfires, but there’s going to be more of them.” As Canadian cities sprawl into previously uninhabited woodland areas, he added, the human impacts of wildfires will increase — even if the number and intensity of wildfires does not.

What should I do about the air pollution?

First, consult the air quality index at AirNow.gov. The AQI is a unit-less index of air quality running from zero to 500; any reading above 100 would rank as unusually polluted in the United States. On Wednesday afternoon, some air sensors in New York and New Jersey indicated that the AQI exceeded 400.

If it’s higher than 100, then the most vulnerable groups of people — including children, the elderly, anyone with a cardiopulmonary condition, and pregnant women — should limit strenuous activity outdoors. If higher than 150, then people should generally try to limit their outdoor activity; at levels above 200, the air is considered unhealthy and everyone should try to go outside as little as possible.

If you think you might be especially vulnerable, err on the side of caution. Recently, a body of new and large-scale studies have shown that air pollution is generally worse for the body and brain than previously thought.

Then, if you’re in an area with hazardous air pollution, consider how to limit your exposure to the air as much as possible. Keep your doors and windows closed. An air filter outfitted with a HEPA filter can improve the air in a home or apartment. It should generally be closer to the most sensitive people.

“Any pregnant moms — if my wife or anyone I knew was pregnant right now — I would be texting them to stay inside and sit by an air filter,” Burke told me. Exposure to severe air pollution during pregnancy has been shown to increase the risk of preterm birth, and it can reduce a child’s lifelong earnings, cognitive performance, and other indicators, he said.

A KN95 or N95 mask — the type of high-filtration mask used to prevent COVID infection — can also significantly limit your exposure to soot and ash. If you are in a sensitive group or are worried about air pollution’s health effects, you could consider wearing a mask inside if you have no other way to filter the air.

Get the best of Heatmap directly in your inbox:

Green
🔒

You’ve reached your free article limit

Subscribe to Heatmap News for unlimited access to daily energy and climate coverage.
To continue reading
Create a free account or sign in to unlock more free articles.
or
Please enter an email address
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Q&A

Why the Wilderness Society Backs a Data Center Moratorium

Talking with Dan Hartinger, the land conservation group’s senior policy director.

The Q&A subject.
Heatmap Illustration

This week’s Q&A is with Dan Hartinger, senior policy director for The Wilderness Society, a prominent land conservation organization in D.C. that this week called for a moratorium on data center development on public land. The public statement was relatively scant on details about the group’s stance, and a decade of reporting on policy in Washington has taught me that its positions are quite influential, especially in more traditional outdoor recreation and conservationist circles that are also often bipartisan. So I reached out and asked if someone could further explain the society’s position, and Dan obliged.

The following chat was lightly edited for clarity.

Keep reading...Show less
Yellow
Hotspots

Data Center Outrage Catches Up to Renewables Outrage in Michigan

Plus more of the week’s biggest development fights.

The United States.
Heatmap Illustration/Getty Images

1. Central Michigan – I regret to inform you of this back-and-forth between candidates running for Congress and a would-be constituent because it’s a warning sign for the renewable energy sector (and sort of broke my brain).

  • This week brought the first and likely only debate between Rep. Tom Barrett and Sunrise Movement cofounder Will Lawrence, who are locked in a tight contest over the Michigan 7th congressional district. As I’ve written, their race is a must-watch not only for control of the U.S. House but also the political fortunes of the data center sector.
  • The debate contained a remarkable exchange: Moderators played taped remarks from Paula Caltrider, identified as “a local resident” in the city of Mason to ask the candidates a question about data centers. Instead, she offered a comment. “You know, you can’t be a part of this no data center movement without renouncing the large solar farms and dangerous battery storage facilities that power these data centers.” (Quick TL;DR on Caltrider: She’s been quoted in national media coverage of the data center backlash and last year won a legal settlement after allegedly being fired for refusing a vaccine mandate.)
  • Barrett then ran with Caltrider’s baton. “I appreciate Paula linking these together, the stripping away of local control that took place in pursuit of this Green New Deal agenda in Lansing that took away control from communities” – a reference to the state’s primacy law that other Michigan Republican candidates have opposed.
  • Lawrence, whose support for a federal data center moratorium made him a national political test case, did not take the bait, nor did he criticize renewable energy. Instead, this part of the debate became a tit-for-tat about whether the sitting congressman once backed tax breaks for data centers. “He stuck his finger up into the wind, saw which way it was blowing, did a complete 180 on this issue,” Lawrence said. Then Barrett and Lawrence got into a confusing back-and-forth about whether the Inflation Reduction Act was a giveaway to data centers.
  • To the best of my knowledge, this is the first time the Data Center Trojan Horse has reared its ugly head on any kind of prominent debate stage, but it won’t be the last. For example: The Wisconsin gubernatorial debate is Oct. 21, and we’ve warned you about that one.

2. Doña Ana County, New Mexico – I suggest you pay closer attention to the federal permitting fight playing out over Oracle’s Project Jupiter.

Keep reading...Show less
Yellow
Spotlight

The Data Center Backlash Is Coming for Permitting Reform

The Senate’s compromise bill enters the chat at a moment when federal land and anti-pipeline advocates are already quite activated.

The Capitol and a data center.
Heatmap Illustration/Getty Images

The AI data center backlash is getting louder in D.C. ahead of the midterms – and it’s poised to collide head-on with the new permitting reform deal being negotiated in Congress.

This week, major environmental advocacy organizations are taking large public steps to lean in on the data center fight. The League of Conservation Voters and Natural Resources Defense Council, I’ve been told, are imminently announcing a $250,000 ad buy in the Washington, D.C. market focused entirely on decrying fossil fuel-powered data centers and Trump administration policies to speed up their construction. The Wilderness Society, a prominent land conservation organization, announced it now supports a moratorium against data centers on “public lands” focused on the roughly half billion acres under the Interior Department’s stewardship. And Earthjustice on Thursday did a detailed report claiming that 80% of the data centers under development “bringing their own power” are going to rely on gas generation.

Keep reading...Show less
Yellow