This story was originally published by the Guardian and is reproduced here as part of the Climate Desk collaboration.
asserted
story → publish → collaboration
On a recent August day in the subterranean furnace of New York City’s subway, one bearded, curly haired man was studying his phone for different reasons than the other wilting passengers—to track the soaring temperatures and ponder how underground train stations can cool down in an era of climate crisis.
asserted
stations → study → crisis
Jack Klein, a 31-year-old construction site manager, has in the past two years taken it upon himself to become a sort of guerrilla subway heat operative, sticking teardrop-shaped thermometers to steel beams in seven of the hottest Manhattan stations and posting social media videos of the Hades-like summer temperatures that commuters have to endure.
“This line must be cursed,” Klein said on the 4/5 line platform at 14th Street-Union Square, one of the city’s most blistering stations, as he dangled another of the monitors and saw the digits climb to 99 Fahrenheit, a good 10 degrees hotter than aboveground.
asserted
digits → take → Fahrenheit
The heat index, which combines the temperature with New York’s clinging humidity, rose to 116 F, well above the level at which heatstroke can set in.
asserted
heatstroke → combine → which
“It’s been worse—I’ve seen it get to 120,” said Klein, as two nearby police officers shifted uneasily in their heavy bulletproof vests.
asserted
officers → see → vests
Shortly afterward, it did indeed get worse.
asserted
it → get → ?
The monitor’s temperature reading, which displays on Klein’s phone, climbed to 101 F, with the “real feel” heat index hitting a delirious 132 F. “It’s just too hot, it’s terrible, too much,” said one Italian tourist, named Leo, on the platform.
asserted
tourist → display → platform
Another passenger, a woman fanning herself, likened the heat to an oven.
asserted
passenger → fan → oven
“I just want to get outta here,” she said.
asserted
she → want → ?
The heat’s biggest impact is upon subway staff—such as maintenance workers and cleaners—who have to toil for hours in these temperatures, a situation that their union describes as dangerous.
asserted
union → have → that
Most of Klein’s in situ magnetized thermometers have disappeared, either removed or fallen, but he has now switched to helping relieve the heat by heaving large dispensers of water down to platforms and agitating for better seating and proper fans.
asserted
he → magnetize → seating
“I mean, what the hell is that even doing?” Klein grumbled about a dust-clogged overhead fan in the 14th Street-Union Square station that blasted even hotter air at commuters already beleaguered by a sensory assault of heat, smell, and the clanging din of passing trains in this dingy, cramped warren.
asserted
that → mean → warren
Living in New York often demands a certain gruff stoicism, and older commuters have taken to reminding Klein, originally from Ohio, that the subway has always been hot and the trains themselves weren’t fully air-conditioned until 1993.
asserted
trains → live → 1993
“A lot of people just say ‘suck it up’,” he said.
asserted
he → say → it
“I get that.
asserted
I → get → that
But I still see this as a public health issue.”
asserted
I → see → issue
Rising global temperatures—July was the hottest month ever recorded in the US—from the burning of fossil fuels are ratcheting up pressure on cities around the world to deal with stifling heat on public transport.
asserted
July → rise → transport
Some, like London, which still does not air-condition all its underground trains, and New York have to grapple with infrastructure built more than a century ago in what was, effectively, a different climatic era.
asserted
what → condition → infrastructure
“The problem is getting worse, people are suffering more and more,” said Giorgia Chinazzo, an environmental engineer at Northwestern University whose research has found widespread underground passenger distress at rising heat.
asserted
research → get → heat
“The underground is overheating more than aboveground, which is creating these extreme temperatures,” she said.
asserted
she → overheat → temperatures
“This summer is a clear sign that we are facing a climate crisis and our built environment isn’t designed for it.
asserted
environment → face → it
In older systems like in London and New York, the metro systems just can’t deal with this.
asserted
systems → deal → this
Underground stations act as a sort of hot box, soaking up heat in concrete and steel and slowly releasing it.
asserted
stations → act → it
As they brake, trains give off heat and air pollution and, in a sort of steamy irony, further broil passengers by dumping out the hot exhaust from the air conditioning designed to cool carriages.
asserted
trains → brake → carriages
Tightly packed crowds of commuters—each person gives off about 100 watts in heat—adds to the stew, with temperatures sometimes 20 F higher than aboveground.
asserted
temperatures → pack → aboveground
New York’s subway was designed with a piston system, whereby incoming trains push out hot air via vents, which is replaced by cooler air from above, although this crude ventilation isn’t enough to deal with extreme heat.
asserted
ventilation → design → heat
Yet the vents, along with stairwells and other open spaces, mean stations are also still too leaky to be air-conditioned, unlike the trains.
asserted
stations → mean → trains
“The subway isn’t a submarine, it’s not an enclosed environment,” said Janno Lieber, chief executive of the Metropolitan Transportation Authority (MTA), which runs the subway.
asserted
which → ’ → subway
“Bringing down the temperature is a complex problem in a system where the stations are 100 years old.
asserted
stations → bring → system
We know this is no fun for New Yorkers.
asserted
this → know → Yorkers
It’s brutal underground in the summertime and every year is getting hotter because of climate change.
asserted
year → ’ → change
So New York has devised a new plan to combat the heat in its stations by looking to a solution even further underground.
asserted
York → devise → solution
A new city and state government study will explore if it’s viable to capture station heat and push it deeper underground, then use this trapped heat in the winter to warm up surrounding buildings.
asserted
it → explore → buildings
This system, called a thermal energy network, would run chilled liquid through pipes behind walls and under flooring to pull heat away from the platforms and, as the liquid warms, funnel it into storage boreholes drilled up to 600 feet underground.
asserted
liquid → call → boreholes
The study will focus on the Brooklyn Bridge-City Hall and Chambers Street subway station complex—which Lieber said is one of the “sweatiest” stations, with an average temperature of 96 F in summer—where this underground thermal battery will soak up and then release the heat in the colder months to warm up municipal buildings including city hall and two courthouses.
asserted
battery → focus → hall
This would knock down platform temperatures by a couple of degrees, or the “difference between total misery and merely sweltering,” as Lieber put it.
asserted
Lieber → knock → it
“What we could see is a first-of-its-kind approach that could lead the nation,” said Zohran Mamdani, New York City’s mayor, at a media event at the crumbling Chambers Street station, which is due for an revamp.
uncertain
which → see → revamp
(†he mayor likened it to a “chamber of horrors” and a background in the Street Fighter II video game.)
asserted
mayor → liken → game
“We would be making these stations cool again, and we’d be making what is old new again,” said Mamdani, who has vowed to revitalize New York’s creaking transit system and tackle the climate crisis.
asserted
who → make → crisis
“That means lower energy costs, a more resilient subway system and a cleaner energy future for New York City.”
asserted
That → mean → City
…and 17 more, not listed.
The Aporia
