Research group @OxfordAOPP & @OxfordPhysics of Tim Palmer/Antje Weisheimer. Predictability, uncertainty, reduced precision for weather&climate forecasting🌍⛈️🌪️🌊
University of Oxford
Joined May 2019
- Tweets30
- Following294
- Followers244
- Likes157
Predictability of Weather and Climate retweeted
📽️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🔋
Predictability of Weather and Climate retweeted
🚨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
Predictability of Weather and Climate retweeted
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⬇️
Predictability of Weather and Climate retweeted
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!
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
Predictability of Weather and Climate retweeted
🚨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
Predictability of Weather and Climate retweeted
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
Predictability of Weather and Climate retweeted
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 ⬇️
@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.
Predictability of Weather and Climate retweeted
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
Predictability of Weather and Climate retweeted
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…
Predictability of Weather and Climate retweeted
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 🗻!
Predictability of Weather and Climate retweeted
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!
Predictability of Weather and Climate retweeted
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!
Predictability of Weather and Climate retweeted
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
Predictability of Weather and Climate retweeted
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
Predictability of Weather and Climate retweeted
Looking forward to the excellent programme of day 2 of our @OxfordAOPP retreat, kicking off with a talk by @OxfordAOPP‘s Tim Palmer!
Predictability of Weather and Climate retweeted
How to find the best #16bit number format for #weather & #climate models? Via #MachineLearning get your custom number format: Self-Organising Numbers - Sonums. Better than #floats or #posits. #JuliaLang package developed @github github.com/milankl/SoftSonum… presented as #betterposter!
Predictability of Weather and Climate retweeted
“Accelerating High-Resolution Weather Models with Deep-Learning Hardware - #DeepLearning is used in a number of discilines in #HPC” @s_e_hatfield @UniofOxford @TheOfficialACM #PASC19 Best Paper @ETH_en #Exascale and Beyond @ECMWF
Predictability of Weather and Climate retweeted
Fantastic Milan @OxfordAOPP. Congratulations!
Yay! So cool!! Thanks to the whole @matplotlib team to have created such an amazing software package - I never spent more time on a single plot 😜 Thanks to @thomas_rackow, @kaedonkers and @sylamythepaut for valuable contributions to this project!
Predictability of Weather and Climate retweeted
Ellen Fetter & Margaret Hamilton, the mothers of #chaos theory. Rings a bell? No? We have made great but insufficient progress since the times of Ed Lorenz, where outstanding female programming efforts were hidden in the acknowledgements. quantamagazine.org/hidden-he…
Predictability of Weather and Climate retweeted
Ready for #EGU19 with my #betterposter inspired by @mikemorrison! Who reads poster text anyway? Talk to me instead and find out why the future is #16bit. Powered by #JuliaLang, posit numbers, @matplotlib, #endrainbow, @ERC_Research and a happy #phdlife @OxfordPhysics
