Climate Change Will Be Worse for Big Cities

Blame it on the urban heat island effect.

1 minute read

June 4, 2017, 11:00 AM PDT

By James Brasuell @CasualBrasuell


Los Angeles Downtown River

shalunts / Shutterstock

"The economic impacts of climate change are almost three times higher in large cities like Los Angeles," reports Emily Guerin.

Guerin is sharing findings of a new study published in Nature Climate Change, titled "A global economic assessment of city policies to reduce climate change impacts."

The effects of climate change are exacerbated by the heat island effect: "a phenomenon in which paved surfaces and buildings absorb and radiate heat causing temperatures in cities to climb as much as 19˚F." According to the study's authors, previous studies "overlooked the fact that cities create their own, hotter climates."

In cities like Los Angeles, that means hotter days, occurring more frequently. "In Los Angeles, the number of days that downtown temperatures break 95 degrees is expected to triple by 2050," writes Gurein.

Wednesday, May 31, 2017 in KPCC

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

The mayor of Baltimore speaks into a microphone in front of a rally for more state transportation funding from Maryland.

‘Going backwards:’ Baltimore mayor, students rally against state's transit funding plan

Maryland's proposed six-year plan provides no funding for Baltimore’s BMORE bus program and reduces its road maintenance funding.

October 2, 2026 - Baltimore Sun

A rendering of the waterfront development, which shows a lit-up stage by the waterfront and people walking about.

Detroit to transform waterfront with $2.2 billion investment

Developers will convert about 18 acres of unused parking lot space into civic spaces.

October 2, 2026 - ABC 7

An old brick apartment building in NYC.

Mamdani sent nearly 6,000 pied-à-terre tax warnings to homes that didn’t qualify

A judge has ordered the administration to cancel thousands of pied-à-terre tax notices after it sent 35% of them erroneously.

October 3, 2026 - The City Reporter

Smoke billows out of a power plant.

25 states, cities sue the EPA over erased power plant emissions limits

The coalition also intends to sue the EPA for not regulating emissions from gas-fired power plants.

October 6 - Smart Cities Dive

Gavin Newsom speaks behind a podium and gestures with one hand.

Newsom vetoes giving CA tribes greater voice in water projects

In his veto letter, Newsom said the bill would add ‘uncertainty’ to the state’s fight to secure Californians’ water supplies.

October 6 - LA Times

The Leeland Dam, nestled between two buildings with pointed roofs. People watch the water.

Michigan Senate votes to revise 'lax' dam safety laws

A Bridge Michigan investigation found more than 100,000 Michigan residents live in the floodpath of a high or significant-hazard dam.

October 6 - The Associated Press

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Senior Planner

City of Thousand Oaks

Community Development Director

City of Wisconsin Rapids

Professor of Urban Planning

Harvard University Graduate School of Design