Tim Andrews
Research Scientist | Met Office Hadley Centre
Associate Professor | University of Leeds
Climate and Atmospheric Science
timothyandrews.github.io
- Reposted by Tim AndrewsCheck out the @pnas.org highlight for our new paper on how Paleoclimate Pattern Effects in the Pliocene lead to tighter constraints on the modern response to CO2 (a.k.a. climate sensitivity)
- The Pliocene climate was more sensitive than the current climate, suggesting that the upper bound of potential 21st-century warming—an estimate informed by Pliocene warming—should be revised down from 5 °C to 4 °C, according to the authors. In PNAS: ow.ly/U5H750Y5yUo
- CFMIP protocol pre-print now out for discussion egusphere.copernicus.org/preprints/20...
- Reposted by Tim AndrewsReally excited to see this paper out!! Led by @vtcoop.bsky.social we show that if you use cold and warm paleoclimates together, you can reduce uncertainty in Earth's climate sensitivity by quantifying the pattern effect and more precisely constrain future climate change www.pnas.org/doi/10.1073/...
- Reposted by Tim AndrewsHow are we equipping people for the current and future climate? Our Chief Executive @pennyend.bsky.social has spoken to @carbonbrief.org about climate science, tackling misinformation and AI. Read and watch ⤵️ www.carbonbrief.org/the-carbon-b...
- Reposted by Tim AndrewsWhat's that? Climate predictions, you say? Okay! www.realclimate.org/index.php/cl...
- Reposted by Tim AndrewsFantastic to welcome Dr Ben Booth to @universityofleeds.bsky.social School of Computer Science: the 5th of 5 new Met Office Academic Partnership joint positions. ML is transforming science. Ben's appointment will better link atmos & computer science & deliver impact eps.leeds.ac.uk/news/article...
- Abstract deadline is tomorrow (13th Aug) for the CMIP Community Workshop in Japan March 2026. cmip2026.org/programme/ab... Submissions for in person or virtual presentation welcome. Picked up out some fun sessions below 👇
- Anfield ✊🔴 #LFC
- Quick trip home to the #LakeDistrict 👌🏼
- Got a call to visit the work post room as there was a parcel for me… (first time in 10+years!) It was a book, sent to contributing authors I presume, of papers that came out of an ISSI workshop in 2022. It’s easy to forget that journals often still have physical copies… a joy to flick through.
- The online and open access version of these papers can be found here: link.springer.com/collections/...
- Reposted by Tim AndrewsWe (@tim-andrews.bsky.social, Ryan Kramer and I) are leading a session around understanding radiative forcing in models at the CMIP Community Workshop in Kyoto, Japan, next March. Abstract submissions open until 13 August: wcrp-cmip.org/event/cmip20... Session ID #4
- “… oh, his name is Diogo..” 💔 youtu.be/XQ5TA0F-dZc?...
- Fantastic to have spent two days at Leeds discussing physical climate science with new and old colleagues. Looking forward to the opportunities ahead @earthandenvleeds.bsky.social. And it’s great to be back where it all began 20 odd years ago as a student, but now on the other side of the fence…
- Reposted by Tim AndrewsThe @metoffice.gov.uk Hadley Centre is a powerhouse of climate science. If you'd like to help guide their program of work, please consider joining their Science Review and Advisory Group. There has never been a more important time to stand up for science ! 🧪🌍🌡️ www.metoffice.gov.uk/research/app...
- Reposted by Tim AndrewsHappy to share our paper in @science.org 'Observed trend in Earth energy imbalance may provide a constraint for low climate sensitivity models' | Science www.science.org/doi/10.1126/...
- Looks a good read: The Sea Surface Temperature Pattern Effect on Outgoing Longwave Radiation: The Role of Large-Scale Convective Aggregation agupubs.onlinelibrary.wiley.com/doi/full/10....
- Some sessions that ought to be fun & interesting: 🔷 ID4 RFMIP: Exploring radiative Forcing in models and observations to understand climate change 🔷 ID5 CERESMIP: Confronting models with observed changes in the Earth’s energy imbalance 🔷 ID15 CFMIP: Clouds, circulation and climate sensitivity
- The CMIP Community Workshop 2026 will be held in Kyoto, Japan from 9-13th March 2026. The call for abstracts for CMIP26 is now open! Find out more at wcrp-cmip.org/cmip26-call-...
- Reposted by Tim AndrewsThe CMIP Community Workshop 2026 will be held in Kyoto, Japan from 9-13th March 2026. The call for abstracts for CMIP26 is now open! Find out more at wcrp-cmip.org/cmip26-call-...
- Reposted by Tim AndrewsThe CMIP Community Workshop 2026 will be held in Kyoto, Japan from 9-13th March 2026. The call for side sessions for CMIP26 is now open! Find out more at wcrp-cmip.org/cmip26-side-...
- Reposted by Tim AndrewsThe Global Annual to Decadal Climate Update published today by Met Office and the WMO shows that global average temperature exceeded 1.5°C above the 1850-1900 average last year for the first time bit.ly/43CHLGJ
- Reposted by Tim AndrewsThe doubling of the rate of global heating in recent decades has surprised the scientific community so needs to be better understood yet our capability to measure Earth's energy imbalance is at risk: doi.org/10.1029/2024...
- Reposted by Tim AndrewsAnyone interested in learning about a first principles, quantitative theory for convective mass flux in a warming world? Read the paper and/or come to my EGU talk on Thursday! :) agupubs.onlinelibrary.wiley.com/doi/full/10....
- Anfield awaits 🔴✊ #LFC youtube.com/shorts/87III...
- Anfield awaits 🔴✊ #LFC youtube.com/shorts/87III...
- Reposted by Tim AndrewsHot off the press! New GRL paper from our group, led by Anna Mackie: Circulation and Cloud Responses to Patterned SST Warming @agu.org @uniofstandrews.bsky.social doi.org/10.1029/2024...
- Reposted by Tim AndrewsGrowing heating rate of Earth due to rising greenhouse gases & declining aerosol particles combined with a return of subsurface heat following a switch from extended La Niña to El Niño to explain exceptional jump in global temperature up to 2023-2024: doi.org/10.1038/s416...
- Biases in Climate Model Global Warming Trends Related to Deficiencies in Southern Ocean Sea Ice Evolution Over Recent Decades New paper in GRL by Harry Mutton and myself: agupubs.onlinelibrary.wiley.com/doi/10.1029/... Quick thread [1/n] 🧵:
- Between 1985 and 2014 the Southern Ocean cool and the amount of sea ice increased, despite the world warming by just under 0.2°C per decade globally. This phenomena is generally not simulated by atmosphere-ocean coupled climate model simulations of historical climate change over this period [2/n]
- In this manuscript we wanted to quantify the impact of this discrepancy on a climate models simulated surface albedo feedback and global temperature trends. [3/n]
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View full threadFinally, of course since 2014 Antarctic sea-ice has collapsed and is now actually inline with AOGCM long-term declines. But understanding and getting the decadal variations right is important for predicting nearer-term climate change. [9/n] [Finished]
- Reposted by Tim AndrewsCall for Session Proposals! 📢 We are happy to announce that the CMIP Community Workshop 2026 will take place in Kyoto, Japan, from 9-13 March 2026! 📅 Session Proposal Deadline: 12:00 UTC, 25 April 2025 🔗 More details below #CMIP #ClimateScience #EarthSystemModeling #ClimateAction #WCRP
- I'm on the Scientific Organising Committee. Should be some great science and some early CMIP7 results to discuss. It's community driven - so we need you to put forward session proposals that you would like to convene. Looking forward to seeing folk in Japan. Should be a good one. 👇
- 🚨 #CMIP Community Workshop 2026 🚨 🌏 Kyoto Japan, 9-13th March 2026 Call for Session Proposals are now open : 📅 Session Proposal Deadline: 12:00 UTC, 25 April 2025 🔗 wcrp-cmip.org/cmip26-sessi... @wcrp-cmip.org
- 🚨 #CMIP Community Workshop 2026 🚨 🌏 Kyoto Japan, 9-13th March 2026 Call for Session Proposals are now open : 📅 Session Proposal Deadline: 12:00 UTC, 25 April 2025 🔗 wcrp-cmip.org/cmip26-sessi... @wcrp-cmip.org
- Workshop themes: 🔷 Progress in understanding historical climate change and associated impacts 🔷 Understanding climate system responses, feedbacks and thresholds 🔷 Synthesising information across the multiverse of models For more details see: wcrp-cmip.org/cmip26-sessi...
- Reposted by Tim AndrewsToday at 10:01 CET the Sun was directly above Earth’s equator, marking the #SpringEquinox! 🌸 At this moment, our planet is neither tilted towards nor away from the Sun, creating nearly equal day/night. 🌓 This stunning image was captured by our Meteosat-12 satellite. 🛰️
- Reposted by Tim AndrewsHappy Equinox! Image: @eumetsat.int
- Reposted by Tim Andrews🔴The #StateOfClimate report, released today, reveals key climate change indicators again reached record levels in 2024. Check out the full report: wmo.int/publication-...
- Reposted by Tim AndrewsCan climate models reproduce observed trends? The answer can be challenging. Our new review paper in Science Advances led by Isla Simpson and Tiffany Shaw @drshaw.bsky.social discusses challenges and ways forward in confronting climate models and observations. www.science.org/doi/10.1126/...
- Reposted by Tim AndrewsThe 2025 CFMIP-CloudSense Meeting on Circulation, Clouds, and Climate will be held July 7-10 at the University of Exeter, Exeter, UK The conference will focus on Cloud processes, Microphysics, Dynamics, Feedback, Energy Imbalance & Convection Abstract deadline 4 April www.gewex.org/event/2025-c...
- Reposted by Tim AndrewsOur planet is becoming dimmer, in so many ways… our new @nceoscience.bsky.social @uor-research.bsky.social study teases out a signal of less shiny ocean clouds & how they combined with greenhouse gas heating to fast track #climate warming up to the balmy 2023/24 El Niño: doi.org/10.1088/1748...
- And a big thank you to @johnmarsham.bsky.social for doing all the hard work that made these positions possible
- Delighted to announce I have taken on a joint position between the Met Office and the University of Leeds: Research Scientist | Met Office Hadley Centre Associate Professor | University of Leeds Looking forward to getting to work on this. See news article below 👇
- The Leeds-Met Office Academic Partnership welcomes four new joint positions: Dr Steve Abel, Dr Tim Andrews, Dr Camilla Mathison, and Dr Lorenzo Tomassini! They'll deliver research and impact across disciplines to tackle challenges in weather and climate. environment.leeds.ac.uk/news/article...
- Hearing lots of “yaffle” from green woodpeckers the last two days… #SignsOfSpring
- Banger of a quote from Chris Bretherton... "... No amount of clever technology can cover the gap that is forming. “Artificial intelligence,” he says, “cannot compensate for a lack of human intelligence.”..." www.science.org/content/arti...
- Hello again Spring. Been a while. ☀️
