Colin Raymond

Colin Raymond

@regclimo.bsky.social

Climate scientist at UCLA

2.8K followers51 following53 posts

Colin Raymond reposted

A powerful El Niño is already influencing extreme weather around the planet. During the last strong El Niño, federal agencies ramped up research in the hope of improving weather forecasts. This year, they won't be matching that effort. trib.al/dkJLZ2X

trib.alStudying this super El Niño could save lives. NOAA is scaling back researchA powerful El Niño is already influencing extreme weather around the planet. During the last strong El Niño, federal agencies ramped up research in the hope of improving weather forecasts. This year, they won't be matching that effort.

Colin Raymond reposted

I had the exciting opportunity to write a guest post for @carbonbrief.org about our new paper on the expansion of extreme heat seasons around the world. Take a read for a digestible summary of our approach and key results!

Carbon Brief@carbonbrief.org

NEW – Guest post: How extreme heat is ‘creeping’ from summer into autumn and spring | ✍️ Written by @ccivanovich.bsky.social Read here: buff.ly/65g0zbM

Colin Raymond reposted

We may seem some genuinely extreme humidity levels along SoCal coastal plain Tue-Wed (yes, even worse than today). As Marie's tropical moisture lingers, temps of 90-100F will combine with dew points of 70F to nearly 80F (!), yielding heat index values as high as ~110F. #CAwx

Colin Raymond reposted

Colin Raymond reposted

🌡️ 💧 This summer we kicked off the 'State of the Science' blog series with a piece on Heat and Humidity Extremes by Colin Raymond @regclimo.bsky.social : wp.me/p9wIOV-WU 📖 Follow along the blog series for a quick overview on the latest research in compound events, a new post is coming out soon! 👀

Colin Raymond@regclimo.bsky.social

@compoundnet.bsky.social's new "State of the Science" mini-blog series: a fully human summary of recent advances & current frontiers for compound events, hopefully of special value for ECRs. The first edition, on heat & humidity extremes, is live at bit.ly/4buNAL6. Many thx @afsribeiro.bsky.social!

A sticky situation: measures of high humid heat in 2025 mostly ranked the 3rd or 4th highest ever (below the El Niño-driven records of 2023 and 2024). East & South Asia were particularly struck by oppressive conditions, with up to 100 days seeing values historically reached on only 36 days.

Colin Raymond reposted

Incredibly, even *more* locations across U.S. are today experiencing their warmest March temperatures on record--many by a wide margin, with some even breaking April records. This includes most or all of: AZ, UT, CO, NM, WY, NE, KS, MO, IA, plus portions of many other states. 🫠

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Specifically, we devise a combined reanalysis/model estimate of the likelihood of current records being broken, in which the eastern US, eastern China, & Australia stand out. We also find MENA and the tropics endure the most severe, long-lasting, and clustered events, and the greatest uncertainties.

Alarmingly, the single largest ERA5 daily wet-bulb temp affects estimated return periods by a factor of >3 or even >10 in many regions, including those where JRA55 and NOAA20CR agree well. We address this undersampling of possibilities by bringing in large ensembles...

Colin Raymond reposted

We are very delighted to have @karinvdwiel.bsky.social and @regclimo.bsky.social as invited speakers in our #EGU26 session on NH11.2 Future Changes in Weather and Climate Hazards! Consider to present your fantastic work with us!! @nh.egu.eu @pik-potsdam.bsky.social

Vikki Thompson@vikkithompson.bsky.social

👻🎃 It's that time of year again, time to start thinking about #EGU26! 🔥🌧️🌀 Our session on Future Changes in Weather and Climate Hazards is now open for abstract submissions 🔥🌧️🌀 meetingorganizer.copernicus.org/EGU26/sessio... @tamarahappe.bsky.social @yinglintian.bsky.social @kornhuber.bsky.social

Colin Raymond reposted

🚨 NCA5 is now LIVE! 🚨 They took it down, but we've brought it back at: nca5.climate.us Bookmark. 👏 this. 👏 page. 👏 This is just our first step in restoring trusted science information that Americans need to understand what's happening with the climate.

The year 2025 and this podcast's title have partly converged, but other social, technological, etc. trends also feature prominently. As always, the new season contemplates topics that feel fresh and necessary, aiming to come to some fuller understanding. At the least, this helps preserve sanity.

Colin Raymond reposted

Replying to @weatherwest.bsky.social

Multiple model ensembles are already suggesting a broad region of record mid-tropospheric ridging over the far NE Pacific and Washington/British Columbia, with possible record-breaking late-season warmth in the same region. That's a very strong signal ~1 week out. #WAwx #ORwx #BCwx

2024 was another boom year for humid heat, esp. in East/South Asia. Hats off to Kate Willett and all for packing much info and definitional complexity into the kind of thing one could read over breakfast -- if one likes to start the day with multi-panel figures and intricately abbreviated variables.

Colin Raymond reposted

Engrossing meeting of the minds at the workshop this week. Nine creative yet plausible storylines were developed and a whole range of new cxns made. Thanks again to all who attended, and especially those who made it happen. We're excited to see what this format & these ideas can catalyze!

It's often assumed that the best approach for climate applications is to select the best models, downscale them, and compute statistics of interest. In fact, in new work led by Adrienne Wootten, we find the downscaling process scrambles the meaning of 'best'...

Colin Raymond reposted

The first 3 eps of TOTALLY COOKED have landed! Check it out for weather & climate in a factual, relatable & often humorous way. Available below, & where you get your podcasts. Like, follow & share. Let's tackle the climate crisis together. #totallycooked www.21centuryweather.org.au/engage/total...

21centuryweather.org.auTotally Cooked: The Weather & Climate PodcastThe climate is changing. So is the conversation. Totally Cooked is a podcast about weather, climate change, and what it all means for life on Earth.

Colin Raymond reposted

Replying to @weatherwest.bsky.social

I strongly encourage folks to check out the rest of the event, which will feature dozens of speakers over a 5 day period. The line-up is genuinely impressive--a veritable who's who of the American #weather and #climate world in 2025--so I'll be watching! wclivestream.com/schedule

wclivestream.comThe Weather & Climate Livestream | ScheduleJoin us starting May 28th, as meteorologists and climate scientists from across the US share their research and answer your questions.

Colin Raymond reposted

There’s so much happening right now, I thought I’d put together a running thread on the dismantling of #climate and research and knowledge infrastructure in the United States 🧵

Colin Raymond reposted

🚨Report your NSF grant terminations! 🚨 We are starting to collect information on NSF grant terminations to create a shared resource as we have for NIH. The more information we collect, the more we can organize, advocate, and fight back! Please share widely! airtable.com/appGKlSVeXni...

Colin Raymond reposted

Replying to @mims.bsky.social

The American Meteorological Society has issued this dire warning of "disastrous consequences" for America's ability to predict lethal weather: "The administration's 2026 budget... would close all of NOAA’s weather, climate, and ocean Laboratories." www.ametsoc.org/ams/about-am...

ametsoc.orgStand Up for NOAA Research – The Time to Act is NowThe AMS is a global community committed to advancing weather, water, and climate science and service.

Under the auspices of @compoundnet.bsky.social, I'm pleased to be coordinating the new "Recent Reads" series, in which prominent researchers describe a selection of recent papers that have affected their thinking about the direction or implications of compound-events work. wp.me/p9wIOV-Sy

wp.meRecent reads by Sha ZhouIn the new “Recent Reads” series, prominent researchers describe a selection of papers from the last few years that have made an impact on their thinking about the direction of compound…

Colin Raymond reposted