Research group @OxfordAOPP & @OxfordPhysics of Tim Palmer/Antje Weisheimer. Predictability, uncertainty, reduced precision for weather&climate forecasting🌍⛈️🌪️🌊
Joined May 2019
- Tweets 30
- Following 297
- Followers 251
- Likes 157
Photos and videos
Pinned Tweet
13 Jun 2019
Tim Palmer explains why we don't need more climate models but a massive international Earth simulator on an #exascale supercomputer. Regarding the climate emergency, $1.1bn is well invested to inform us precisely about the climate change we are facing.
nytimes.com/2019/06/12/opini…
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Forecasting heat and feels-like temperatures with @ECMWF|s ensemble prediction system - applied to sport events! How can we bridge the gap between tons of forecast data and what users actually need to know? Communication of forecast data is never easy, maybe 👇this is a way?
8 Mar 2023
🚨NEW ARTICLE🚨
"Forecasting feels-like #temperatures as a strategy to reduce #heat #illnesses during #sport events"
📄@BJSM_BMJ
Great collaboration @milankloewer @K_Hollander_ @ephysiol @FPappenberger A Niess Y Pitsiladis
#ClimateChange #Health
▶️bjsm.bmj.com/content/early/2…
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10 Aug 2022
Soooo cool! ☁️🌧️🌨️
10 Aug 2022
Today's magic trick: Make vorticity look like clouds ☁️🌧️ to celebrate that we just released SpeedyWeather.jl v0.3, our still-baby weather model in #JuliaLang. #GPU, auto-differentiation, low-precision, machine learning, all coming soon! Check it out, github.com/milankl/SpeedyWea…
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15 Jul 2022
We now have a global circulation model developed @OxfordAOPP! Not to replace existing forecast models, but as a computational playground to develop and test new ideas! Looking good already 🥳
15 Jul 2022
Since I started research on #weather and #climate, I always wanted to write a global atmospheric circulation model from scratch. Many years later, here we are, proudly presenting SpeedyWeather.jl github.com/milankl/SpeedyWea… written in #JuliaLang and soon in 16/32-bits, on #GPU|s etc
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Predictability of Weather and Climate retweeted
11 Feb 2022
📽️aaaand action! How do you cheat on chessboards using #fluiddynamics? No, what you see is the (probably) first fluid simulation entirely computed in #16bits! Can you spot the difference to 64 bits?
No? There's only one: 16 bits is computed ~4x faster saving time⏰ and energy🔋
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Predictability of Weather and Climate retweeted
11 Feb 2022
🚨Fluid simulations in only #16bits?🚀~4x faster than good old 64-bit double precision (😴boring!) on the #A64FX processor that powers the world's fastest computer Fugaku?
Our new paper explains how agupubs.onlinelibrary.wiley.… Run in the @JuliaLanguage we squeeze the model ... 1/4
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Predictability of Weather and Climate retweeted
18 Jan 2022
4 years, 9 papers (jeez 🤫), 50 talks, 8 posters, ~5000 github contributions, 6 radio/news interviews, some 4,000km of 🚲commute, uncountable friends and colleagues, too many pints of cider, 35 housemates and 200L of olive oil later, Dr Milan has finally defended his thesis⬇️
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Predictability of Weather and Climate retweeted
26 Nov 2021
Hello #BigData world! Our #newpaper is the editor's pick in the current issue of Nature Computational Science @NatComputSci 🥳 Read it, it's #openaccess. How to make #BigData small again? We found a way, at least for climate data!
26 Nov 2021
Compressing atmospheric data is crucial to improve data storage and sharing. @milankloewer and colleagues (@ECMWF and @CopernicusECMWF) propose a method for efficient compression that preserves most of the meaningful, real information from the data. go.nature.com/3xdGKVa
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Predictability of Weather and Climate retweeted
26 Nov 2021
🚨Our #newpaper made it to the front cover of @Nature Computational Science @NatComputSci 🥳 nature.com/articles/s43588-0… #openaccess 📖 Data archives are exploding, @ECMWF stores 500,000,000 GB📈 but many bits are just noise with no real information. We propose ... 🧵1/4
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10 Aug 2021
Can a #weatherforecast be used to minimize the risk of heat-illnesses in sport? Short answer: yes, long answer ⬇️⬇️⬇️
10 Aug 2021
More heat☀️ = more heat-illnesses in sport 🏃🥵? But how high is the risk given an outdoor temperature🌡️ sunshine☀️ humidity💦 wind💨? Read more in our
NEW #openaccess paper: doi.org/10.1111/sms.14029 Summary thread that lead to the @HeatForecast twitter bot 1/n 🧵
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Predictability of Weather and Climate retweeted
26 Jul 2021
Heat forecast for #TokyoOlympics2021: Strong winds continue through Tue, Wed and Thu, still reaching 31˚C daily. Heavy rain likely to stop Tue afternoon but some rain still possible on Wed/Thu. Hotter again thereafter! #OlympicGames #Olympics2021 #Tokyo2020
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Predictability of Weather and Climate retweeted
19 Jul 2021
Going online: We've built a @HeatForecast for the #Olympics from @ECMWF's data. How hot will it feel? How does wind💨, sunshine☀️ and humidity💦 affect the feels-like temperature in Japan? TL;DR: It's hot, stay hydrated! Follow this account to receive daily updates ⬇️
19 Jul 2021
@HeatForecast going online: Tokyo's heat forecast for the next 10 days. Tue-Fri will feel like 34-35˚C due to high humidity, sunshine and little wind. Windier from Sat evening will the decrease the feels-like temperature by a few ˚C. No rain, few clouds. Data from @ECMWF
ALT Heat forecast for Tokyo, National Stadium from Tuesday, July 20, 10days ahead. Clouds, rain, the feels-like temperature, strong winds are shown as they are predicted to evolve over time. The contribution of wind, radiation and humidity to the feels-like temperature is shown as well.
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Predictability of Weather and Climate retweeted
29 Jun 2021
Our information-preserving compression is in review for @NatComputSci! What's real information in #climate data?🌍↔️💿Why do large archives store mostly random bits, and how to separate the false from the real information. Preprint doi.org/10.21203/rs.3.rs-590… summary 🧵here⬇️ 1/n
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Predictability of Weather and Climate retweeted
20 Apr 2021
Attending #vEGU21 this year? You've just saved many million kg of carbon by not flying to Vienna 🥳EGU would have emitted 25,000,000 kgCO2 by the end of next week: 26kg every second due to attendees flying in long-haul. The carbon clock is ticking...
egu21.eu/about/green_egu.htm…
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Predictability of Weather and Climate retweeted
31 Mar 2021
16 bit not enough? I doubt it! After 3yrs of emulation, we finally run simulations on real 16-bit hardware at 3.5x the speed! Everyting 👇in Float16 & #JuliaLang and run on Isambard's A64FX - the same @Arm processors that power the fastest supercomputer #Fugaku 🗻!
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We've been working on stochastic rounding, which is definitely on our wish list for next generation computing! Finally stochasticity baked deeply into weather and climate models! 🌍
2 Mar 2021
Just presented at #SIAMCSE21 on Stochastic Rounding for Weather and Climate Models🌍As the conference is not free💰, here a thread-summary. TL;DR Stochastic rounding reduces the overall error by introducing additional noise. Counterintuitive? Well, no, read on ... 1/n
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Predictability of Weather and Climate retweeted
16 Sep 2020
Awesome talk from @s_e_hatfield with results from collaborative work with @OxPredict @PDueben. Single precision computations once operational in @ECMWF #IFS47r2 will realise impressive savings that can be invested in higher vertical resolution of the ensemble forecasting system!
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Predictability of Weather and Climate retweeted
3 Nov 2020
Fast climate models in 16-bit arithmetic? On a #GPU? Doesn't work? Yes it can! New paper on challenges for #16bit floats (or posits!), how to use mixed-precision, rescaling equations &reduced-precision communication agupubs.onlinelibrary.wiley.…
Everything in #JuliaLang & open-source!
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Predictability of Weather and Climate retweeted
12 Nov 2019
We are looking for a post-doctoral researcher to work in our dynamic (and fun) @ClimateProc group on observational constraints on aerosol-cloud cloud interactions in models across scales as part of the @FORCeS_H2020 project. Interested? (via email)
bit.ly/32yPios
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Predictability of Weather and Climate retweeted
5 Nov 2019
What is the travel carbon footprint of a big scientific conference like #EGU19? 16,273 scientists from 113 countries emitted 22,300 tCO2e. How to reduce it by more than 90%? Answer: 25% virtual participation and Europe arrives by train. 🖥️🚆 @EGU @flyingless #netzero
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Predictability of Weather and Climate retweeted
4 Oct 2019
Looking forward to the excellent programme of day 2 of our @OxfordAOPP retreat, kicking off with a talk by @OxfordAOPP‘s Tim Palmer!
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