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Colin Raymond @regclimo

Climate scientist at Univ of California, Los Angeles & the Jet Propulsion Laboratory

Joined June 2016
  • Tweets 420
  • Following 201
  • Followers 741
61 Photos and videos
Colin Raymond retweeted
Columbia Climate School
@columbiaclimate
10 Dec 2024
Extreme heat is preferentially killing young adults and small children, finds a new study on mortality in Mexico by @Columbia PhD candidate @DannyBressler1 and colleagues from @columbiaclimate, @Stanford, @montanastate, @UCLA, @BU_Tweets, @todoscicese: news.climate.columbia.edu/20…
Farmworkers in northern Mexico harvest lettuce. Heat mortality among young adults across the nation is high, probably in part because they are the ones most apt to do manual labor. Credit: Charles O'Rear, U.S. National Archives

ALT Farmworkers in northern Mexico harvest lettuce. Heat mortality among young adults across the nation is high, probably in part because they are the ones most apt to do manual labor. Credit: Charles O'Rear, U.S. National Archives

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Risk KAN: Compound Events webinars are continuing! Next is Fri Nov 8 at 3pm UTC with @froeltho speaking about "Compound marine heatwaves and biogeochemical extremes: Drivers, changes and impacts". Zoom info: columbiauniversity.zoom.us/j…
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Happening in two days!
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No matter how intense the humid heat, it might be thought that sunset and a refreshing sea breeze will always bring some relief. But close examination of the Persian/Arabian Gulf region dispels these assumptions, as explored in our new @CommsEarth paper: rdcu.be/dWXl5

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Metrics (WBGT, UTCI) with radiation have a typical afternoon peak. But Tw & HI, widely discussed in recent years, apply well to indoor/shaded conditions. We consider them incomplete yet valuable signposts on the way toward a full, locally relevant portrait of heat-stress risk.
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The Gulf region sits at the very vanguard of climate-change-driven heat threats. How humid heat plays out there, in all its complexity, is essential for planning heat resilience across impacted people and sectors — particularly for risks that may have counterintuitive elements.
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Replying to @NWSPhoenix
@NWSPhoenix's streak of consecutive record-setting days, already 13, would reach 20 if the current forecast holds. Among all global locations with 50 years of data, the only comparable streaks have been on various tropical Pacific islands, plus the Russia 2010 mega heat wave.
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In a peaks-over-threshold sense it's shaping up to be less singular, but still likely in the global all-time top 20 (~35C of cumulative record margins). Being the tail end of summer makes it a bit more bearable, but also causes more intersection with fall activities like sports.
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Helene's aftermath is rightly drawing much of the attention in the US, but the ongoing heat wave in Phoenix is truly shaping up to be one for the record books. Today was the 7th consecutive record-tying or -setting max temp, with nearly all the next 7 days expected to do the same
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Urbanization extreme weather climate change = probably time to move the Arizona State Fair to a cooler month
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Colin Raymond retweeted
Xaida Project@XaidaProject
25 Sep 2024
🆕Special Webinar | In one month, XAIDA and @CLINTH2020 will be holding a webinar on compound weather and climate events. Meet our two speakers, @Bevacqua_E (UFZ) and Niklas Luther (JLU). 🔎Abstracts & registration 👉url-r.fr/zYfUQ 🗓️October 25th ⏰10:30am (CEST)
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Insightful reporting by @abcnews about efforts at @HeatHealth_USYD to probe the very limits of human heat tolerance. (With a hot/dry wet-bulb temp of 35C, this trial had to be ended after 2.5 hours.) abc.net.au/news/2024-09-02/d…

For the first time, humans were exposed to a deadly combination of heat and humidity. Here's how...

Heatwaves loom as a growing threat to humanity in a warming climate. This summer alone, in the northern hemisphere, thousands have died during extreme heat events. It's driving researchers to find...

abc.net.au
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Encouraging to now see humid heat spotlighted in the 2023 State of the Climate report climate.gov/news-features/un…, but alarming to track its inexorable rise. Great work summarizing this hazard in our subsection led by Kate Willett

Highlights from 'State of the Climate in 2023'

International report confirms record-high greenhouse gases, global sea level, and ocean heat in 2023.

climate.gov
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Well-designed and immersive training school in a beautiful setting! Highly recommended if you'd like to become more involved in the CE community
Emanuele Bevacqua@Bevacqua_E
2 Jul 2024
Applications for the 3rd Como Training School on Compound Events are open! Deadline for applications: August 25th. For further info visit: tinyurl.com/ComoSchool24 @Compound_Event
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A fundamental problem in humid heat -- as a bivariate quantity, what does it mean if places or times have the same humid-heat value (choose your favorite metric) but different combinations of temperature and moisture?
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In the vein of "what can't be measured can't be managed", we hope stickiness can be used as a tool to more readily describe and interpret humid heat's complexities (spatially, diurnally, seasonally, interannually) and their meaning for impacts.
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And also see Casey's thread for her take! x.com/ccivanovich/status/179… The paper is at journals.ametsoc.org/view/jo…

Casey Ivanovich@ccivanovich
30 May 2024
In what is likely the peak of my scientific career, we created a new variable! If you’ve ever struggled to quantify the different drivers of extreme humid heat, take a look at our new article on “stickiness” in @AMS_atmos 🧵1/9 journals.ametsoc.org/view/jo…
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