Harry Stevens

Profile banner

Harry Stevens

@harrystevens.bsky.social

Climate Lab columnist
@washingtonpost

Data, maps and curiosity about climate change
📩 Email me + check my work: [email protected]
Avatar
How accurate is the weather forecast in your city? Niko Kommenda and I learned that NWS just began doing gridded assessments of forecast accuracy. We got the data and mapped of how many days into the future they get within 3°F of the observed high temp. www.washingtonpost.com/climate-envi...
Avatar
It was the hottest spring on record. I decided to see how many people live in a city where the heat index broke 103°F — the threshold considered dangerous for humans. The answer? Over 1.5 billion people, nearly a fifth of the planet’s population. www.washingtonpost.com/climate-envi... 1/5
Analysis | More than 1.5 billion people have faced dangerous heat this yearwww.washingtonpost.com A Washington Post analysis of a trove of meteorological records shows the extent of life-threatening heat across the globe.
Avatar
⚡ Will future heat waves cause power outages? New research shows where mid-century temperatures will be high enough for long enough to compromise power transformers, critical components of the grid. Latest Climate Lab: www.washingtonpost.com/climate-envi... 🤓 Scenario: CMIP6 SSP2-4.5 1/4
Analysis | Where heat waves might cause blackouts: Look up your areawww.washingtonpost.com New research shows that by 2050, large areas in California, Arizona, Nevada and Texas will experience months of temperatures high enough to compromise the grid.
Avatar
🐋 There are only about 350 North Atlantic right whales left alive. For Climate Lab, we followed the migration of Bishop, aged 1, as he passed 100s of speeding vessels. This year alone, 3 dead right whales have been discovered w/ vessel strike injuries. www.washingtonpost.com/climate-envi...
Analysis | Bishop vanished. His species can still be saved.www.washingtonpost.com This young whale survived a harrowing journey that has killed so many of his species. It wasn’t enough.
Avatar
Avatar
For my Climate Lab column, I made a map of how much nature is in every neighborhood in America. Spending time in nature is positively correlated with living longer & healthier. 🌳 Search the map and look up your neighborhood here: www.washingtonpost.com/climate-envi... 1/6
Analysis | Mapping America’s access to nature, neighborhood by neighborhoodwww.washingtonpost.com Spending time in nature is linked to a longer, healthier life. But nature is not distributed fairly across the country.
Avatar
2 weeks ago, we started photographing cherry trees by DC's Tidal Basin, thinking we had lots of time to capture the buds gradually unfold. Instead, we wound up capturing the 2nd earliest peak bloom on record. New Climate Lab column w/ @niko_tinius: www.washingtonpost.com/climate-envi...
One cherry tree’s rush to bloomwww.washingtonpost.com Watch a cherry tree bloom over 10 days, and find out how climate change is propelling D.C.’s famous trees to hit peak earlier.
Avatar
🌱 You’re not crazy. In much of the U.S., spring really is getting earlier. For my Climate Lab column, I built a tool that lets you look up how the timing of spring leaves has shifted where you live since 1981. www.washingtonpost.com/climate-envi...
Avatar
❄️ Is winter getting warmer? For my Climate Lab column, I analyzed high-resolution temperature data and built an app to let you search for your city and see the winter temperature trend. Check it out here: www.washingtonpost.com/climate-envi...
Reposted byAvatar Harry Stevens
Avatar
Reposted byAvatar Harry Stevens
Avatar
This piece by @harrystevens.bsky.social reminds me of the first time my kids took a look at a forest service map, and saw the incredible checkerboard pattern and asked me where that came from. People preserve land where it's easy to do, not simply based on what's actually needed. wapo.st/3OLL7Rf
Analysis | Can we save nature with crazy shapes?wapo.st The U.N. wants to protect 30 percent of the planet. Many of the areas it counts towards that goal are small and oddly shaped. Can contorted shapes save nature?
Avatar
The countries of the world made a plan to save nature by conserving 30% of their area. For Climate Lab, I looked at the database the UN uses to track progress on the goal. Lots areas are small, contorted and narrow. Can we save nature with crazy shapes? www.washingtonpost.com/climate-envi...
Analysis | Can we save nature with crazy shapes?www.washingtonpost.com The U.N. wants to protect 30 percent of the planet. Many of the areas it counts towards that goal are small and oddly shaped. Can contorted shapes save nature?
Avatar
I had a fun conversation with @n8swick.bsky.social on the American Birding Podcast talking about eBird data and trends in bird populations. You can listen here: podcasts.apple.com/us/podcast/0...
🐦 North America has lost 3 billion birds in half a century. For my Climate Lab column, I made an app where you can see the population trend for almost any bird species in the United States. Play with it here: www.washingtonpost.com/climate-envi...
Analysis | Bird populations are declining. Some are in your neighborhood.www.washingtonpost.com North America has lost 3 billion birds in half a century. The world’s biggest bird database, eBird, shows how bird populations are doing in your town.
Avatar
Avatar
🐦 North America has lost 3 billion birds in half a century. For my Climate Lab column, I made an app where you can see the population trend for almost any bird species in the United States. Play with it here: www.washingtonpost.com/climate-envi...
Analysis | Bird populations are declining. Some are in your neighborhood.www.washingtonpost.com North America has lost 3 billion birds in half a century. The world’s biggest bird database, eBird, shows how bird populations are doing in your town.
Avatar
Avatar
The Climate Lab column is back! To start the new year, I made a game about the climate last year. Most Americans agree global warming is happening. But how much, exactly? Try to draw how 2023 compared with 40 years of climate data. www.washingtonpost.com/climate-envi...
Analysis | Can you draw last year’s record heat? Try this game.www.washingtonpost.com Most Americans agree that global warming is happening. But how much, exactly? In this game, try to draw how 2023’s heat compared with 40 years of climate data.
End of feed.