Publications

Unfortunately, not all publications are open-access. If you want to have a copy, please don't pay for it, just drop me an email and I'll send it to you personally. It's completely legal, and I am very happy to do this.

Scientific Publications

Klöwer M, S Hatfield, M Croci, PD Düben and TN Palmer, 2021. Fluid simulations accelerated with 16 bits: Approaching 4x speedup on A64FX by squeezing ShallowWaters.jl into Float16, Journal of Advances in Modeling Earth Systems, accepted. Preprint 10.1002/essoar.10507472.2

Klöwer M, M Razinger, JJ Dominguez, PD Düben and TN Palmer, 2021. Compressing atmospheric data into its real information content, Nature Computational Science, 1, 713-724, 10.1038/s43588-021-00156-2

Paxton EA, M Chantry, M Klöwer, L Saffin, TN Palmer, 2021. Climate Modelling in Low-Precision: Effects of both Deterministic & Stochastic Rounding, Journal of Climate, 10.1175/JCLI-D-21-0343.1

Klöwer M, MR Allen, DS Lee, SR Proud, L Gallagher and A Skowron, 2021. Quantifying aviation's contribution to global warming, Environmental Research Letters, 16 (2021) 104027, 10.1088/1748-9326/ac286e

Hollander K, M Klöwer, A Richardson, L Navarro, S Racinais, V Scheer, A Murray, P Branco, T Timpka, A Junge and P Edouard, 2021. Apparent temperature and heat-related illnesses during international athletic championships: A prospective cohort study, Scandinavian Journal for Medicine and Science in Sports, 31 (11), 2092-2102, 10.1111/sms.14029.

Klöwer M, PD Düben and TN Palmer, 2020. Number formats, error mitigation and scope for 16-bit arithmetics in weather and climate modelling analyzed with a shallow water model, Journal of Advances in Modeling Earth Systems, 12, e2020MS002246. 10.1029/2020MS002246

Klöwer M, D Hopkins, M Allen and J Higham, 2020. An analysis of ways to decarbonize conference travel after COVID-19, Nature, 583, 356-359, 10.1038/d41586-020-02057-2

Klöwer M, PD Düben and TN Palmer, 2019. Posits as an alternative to floats for weather and climate models, In Conference for Next Generation Arithmetic 2019 (CoNGA'19), ACM, 10.1145/3316279.3316281

Klöwer M, MF Jansen, M Claus, RJ Greatbatch and S Thomsen, 2018. Energy budget-based backscatter in a shallow water model of a double gyre basin, Ocean Modelling, 132, 10.1016/j.ocemod.2018.09.006

Klöwer M, M Latif, H Ding, RJ Greatbatch and W Park, 2014. Atlantic meridional overturning circulation and the prediction of North Atlantic sea surface temperature, Earth and Planetary Science Letters, 406,  10.1016/j.epsl.2014.09.001

Klöwer M, T Jung, G König-Langlo and T Semmler, 2013. Aspects of weather parameters at Neumayer station, Antarctica, and their representation in reanalysis and climate model data, Meteorologische Zeitschrift, 22 (6), 10.1127/0941-2948/2013/0505

 

Invited Seminars

Klöwer, M, M Razinger, JJ Dominguez, P Düben and TN Palmer. Compressing atmospheric data into its real information content. ECMWF Summer of Weather Code Final Day. Sep 29, 2021. Video available here.

P Coveney and M Klöwer. The unreasonable effectiveness of floating-point numbers in the computational sciences. Non-Linear Dynamics of Natural Systems. Utrecht University. June 21, 2021.

Klöwer, M, EA Paxton and M Chantry. Stochastic rounding for weather and climate models. SIAM Conference on Computational Science and Engineering. March 2, 2021. Slides available here.

Klöwer, M, J Dominguez and M Razinger. Compressing atmospheric data into its real information content. ECMWF Summer of Weather Code Final Day. Oct 16, 2020. Video available here.

Klöwer, M, MF Jansen, M Claus, RJ Greatbatch and S Thomsen. Energy budget-based backscatter parameterizations in ocean models. LOCEAN, Pierre and Marie Curie University. May 2019, Paris, France.

Klöwer, M, PD Düben and TN Palmer. Towards 16bit weather and climate models: Evaluating posits as an alternative to floats in Julia. Julia London Meetup, March 25, 2019, London, UK.

 

Conference Talks

Klöwer, M, S Hatfield, M Croci, PD Düben and TN Palmer. 3.6x speedup on A64FX by squeezing ShallowWaters.jl into Float16. JuliaCon 2021, July 31, 2021. Video available here.

Klöwer, M, M Razinger, J Dominguez, PD Düben and TN Palmer. Compressing atmospheric data into its real information content. ECMWF Summer of Weather Code. July 22, 2021. Video available here.

Klöwer, M, PD Düben and TN Palmer. Climate Models in 16 bit: Arithmetic and algorithmic challenges. JuliaCon2020. July 31, 2020. Video available here.

Klöwer, M, J Dominguez and M Razinger. Climate data compression: Elefridge.jl. ECMWF Summer of Weather Code. July 29, 2020. Video available here.

Klöwer, M, PD Düben and TN Palmer. Towards 16bit ocean models. Ocean Challenger Meeting. September 10, 2019, Edinburgh, UK.

Klöwer, M, PD Düben and TN Palmer. Towards 16bit weather and climate models: Posits as an alternative to floats. Conference on Next Generation Arithmetic CoNGA, March 13-14, 2019, Singapore. Slides available here. Video available here.

Klöwer, M, T Rackow and K Donkers. Increasing public confidence in weather forecasts: Intuitive probabilistic meteograms. Copernicus OpenDataHack2018, June 9-10, 2018, ECMWF, Reading, UK.

Klöwer, M, et al. Approximate computing in weather and climate forecasting. Wessex DTN Congress, March 22-23, 2018, Southampton, UK.

Klöwer, M, MF Jansen, M Claus, RJ Greatbatch and S Thomsen. Energy budget-based backscatter in a shallow water model of a double gyre basin. Scales and scaling cascades in geophysical systems, April 4-6 2018, Hamburg, GER.

 

Conference Posters

Klöwer, M, PD Düben and TN Palmer. Finding the best 16bit number format: Sonums - self-organising numbers. Machine Learning for Climate Modelling, Sep 2-5 2019, Oxford, UK. available here

Klöwer, M, PD Düben and TN Palmer. Towards 16bit weather and climate models: Posits as an alternative to floats. European Geoscience Union (EGU), Apr 7-12 2019, Vienna, AT. 10.13140/RG.2.2.20921.01128

Klöwer, M, P Düben and T Palmer, 2018. Approximate computing for weather and climate forecasting: 16bit posits as an alternative to floats. DTP Environmental Research Conference, Dec 5 2018, Oxford, UK. 10.13140/RG.2.2.17348.68487

Klöwer, M, MF Jansen, M Claus, RJ Greatbatch and S Thomsen, 2018. Energy budget-based backscatter in a shallow water model of a double gyre basin. Ocean Science Meeting, Feb 11-16 2018, Portland, Oregon, USA. available here.

Klöwer, M, RJ Greatbatch, S Thomsen, M Claus and MF Jansen, 2017. Energy budget-based backscatter in a shallow water model driven by double gyre wind forcing. Physics of the Ocean Summer School, Jul 9-14 2017, Bad Honnef, Germany. available here.

Klöwer, M, M Latif, H Ding, RJ Greatbatch and W Park, 2014. North Atlantic Oscillation influence on Atlantic Meridional Overturning Circulation and prediction of decadal SST variability. Ocean Scale Interactions Symposium, Jun 23-25 2014, IFREMER, Brest, France. available here.

 

Theses

Klöwer, M, 2021. Low-precision climate computing: Preserving information despite fewer bits (PhD thesis), University of Oxford, UK, 177p, unrevised version available here.

Klöwer, M, 2017. Energy budget-based backscatter in a non-linear shallow water model driven by double gyre wind forcing (Master thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 92 pp., available here.

Klöwer, M, 2013. Perspectives for predicting North Atlantic decadal sea surface temperature variability (Bachelor thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 53 pp, available here.

 

Reports

Klöwer, M, 2019. Towards weather and climate models in 16-bit arithmetic. Confirmation of status report, University of Oxford. Available soon.

Klöwer, M, 2019. Towards 16bit weather and climate models: Posit numbers as an alternative to floating-point numbers. Transfer of status report, University of Oxford. Available soon.

Klöwer, M and C Sarchosidis, 2016. The influence of low-level wind shear on the surface
turbulence kinetic energy production in Adventdalen, Svalbard, AGF-350/850, University Centre in Svalbard, 14pp, available here.

Klöwer, M and E Köhn, 2016. Solving the steady Navier-Stokes equations with Finite Element Methods, available here.

Klöwer, M, 2014. Implementing level set methods into a 2D Boussinesq model, available here.

 

Essays

Klöwer, M, 2017. Time and length scales of physical processes in the global oceans, PhD application essay. available here.

Klöwer, M, 2017. Approximate computing in climate simulations, PhD application proposal. available here.

Milan Klöwer

Climate scientist
@ University of Oxford

Climate computing, information theory, predictability, climate change, aviation.

#JuliaLang open-source developer, vegan, low CO₂, bicycles and co-op living, no borders, free education.

*354ppm. he|him