Climate scientist and photographer from the Southwestern US

Joined April 2012
271 Photos and videos
Our new @NatureComms paper: urban trees halve the heat island globally, but cooling skews to wealthy, suburban areas. Trees offset only ~10% of mid-century warming (SSP2-4.5) in urban areas, ~20% under max planting. Emissions cuts are still essential doi.org/10.1038/s41467-026-7…
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🚨 New paper in ER:H - Global heat livability limits doubled since 1950s Older adults: 600→900 hrs/year of dangerous heat Younger adults: 25→50 hrs/year ~25% of people live in "survivable but not livable" zones for older adults doi.org/10.1088/2752-5309/ae… #ClimateChange #HeatStress
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Graphs from our paper (Fig. 5) showing growth of global population exposure to outdoor livability-limiting heat for younger adults (top, blue) and older adults (bottom, red) - note the spikes in El Niño years (red dots), and how heat exposure continues to spike in 2024 (!).
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In the last decade, a 'cool' year is now about as heat limited as a 'hot' year in the 1950s.
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New in Science 🌳 Forests aren't just carbon sinks, they protect people from climate extremes. In the tropics, intact forests cool by 6°C. But heat from deforestation could reduce safe work conditions for ~3M people & is linked to ~28k deaths/yr. science.org/doi/10.1126/scie…
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Grateful to @nature_org media team (esp Tom Jennings and Robyn Day) for this excellent summary of our new @EarthsFutureEiC paper on heat inequity in the US. Great to see our science reaching wider audiences! nature.org/en-us/newsroom/gl…
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The exec administration plans to dismantle NCAR, the backbone of US climate and weather science. As a student, I trained at NCAR and was mentored by brilliant, careful scientists. I now rely on their data and expertise. If in the US, contact your reps: agu.quorum.us/campaign/15156…
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🚨 Applications open for the Penn–TNC Sustainability & Conservation Science Postdoc Fellowship! 💰 $70K stipend research/travel funds 🌍 Climate & conservation projects 📅 Deadline: Jan 30, 2026 🔗 Details: viest.upenn.edu/sustainabili… #ClimateScience #Postdoc
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We contributed to a new FAO report on forests & ag Forests cool landscapes, sustain crops, & protect workers. 🌡️ Deforestation raises temps by 3–5 °C → unsafe work hours & potential ~28k heat-related deaths/yr. 🌳 Forest conservation = climate adaptation. openknowledge.fao.org/items/…
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🚨 Funding Alert: Allen Family Philanthropies is offering $10M for projects that accelerate Natural Climate Solutions (NCS) in the U.S. through science & tech innovation. LOIs due Jan 15, 2026. Webinar Dec 9. allenphilanthropies.org/acce… #ClimateSolutions #NCS #FundingOpportunity
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🚨 New paper alert! Migrant workers in India face rising indoor & outdoor heat stress, with labor capacity already down ~10% in key cities. Climate warming El Niño = even worse risks. Proud to co-author this work in Earth’s Future. 🔗 doi.org/10.1029/10.1029/2025…

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🚨 AGU talk alert! Presenting at #AGU25 in New Orleans — showing how extreme heat is already limiting safe physical activity for billions, especially older adults. 📅 Dec 15, 4:16PM CST 📍 Room 298-299 #ClimateHealth #ExtremeHeat #Livability
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Want to learn more about estimating how heat limits human livability on a warming planet? Come to my talk at #AMS2025 Tuesday, 14 Jan 2025 at 9:00 AM (CT) in the Session "Novel Assessment of Heat Exposure and Risk" ! @AMS_Health
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Luke Parsons retweeted
👋❤️‍🔥Please! Like and Repost! I'm participating in #GeoHealth 2024 #DataVizCompetition with the our new liveability metric to heat from "A physiological approach for assessing human survivability and liveability to heat in a changing climate" nature.com/articles/s41467-0… @JenniVanos
#GeoHealth #DataVizCompetition To vote for this visualization, simply click “like” and “repost”! 6. Liveability in extreme heat: How much could you do in the heat while staying safe? by Gisel Guzman @GiselGuzmnE Figure: drive.google.com/open?id=1sN…
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Thanks to @CC_Yale for covering our recent @OneEarth_CP paper (doi.org/10.1016/j.oneear.202…) on the rising threat of humid heat and climate change threatening outdoor workers in tropical regions: yaleclimateconnections.org/2…

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