Diabatic evolution of clouds in a Lagrangian framework: turbulence, vorticity dynamics and precipitation effects
Lead Research Organisation:
University of Leeds
Department Name: School of Earth and Environment
Abstract
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Publications
Frey M
(2023)
The 3D Elliptical Parcel-In-Cell (EPIC) method
in Journal of Computational Physics: X
Frey M
(2024)
EPIC: The Elliptical Parcel-In-Cell method
Frey M
(2022)
EPIC: The Elliptical Parcel-In-Cell method
in Journal of Computational Physics: X
Frey M
(2024)
EPIC: The Elliptical Parcel-In-Cell method
| Description | We developed a major extension to a computational method for simulating the complex dynamics of clouds in the atmosphere. The novelty of the method is it use of deformable ellipsoidal parcels which move with the flow and contain all of the essential information needed (temperature, humidity, etc) to represent the full three-dimensional, time-evolving flow. The method offers major advantages over existing methods for studying clouds, including the critically important ability to faithfully represent very small scale turbulent motion. Two papers have been published in Journal of Computational Physics X, which demonstrate the method for two-dimensional and three-dimensional flows, respectively. Further work is going on to establish the impact of parametrising small-scale mixing and incorporating precipitation. |
| Exploitation Route | The associated software has been made available to the wider atmospheric dynamics community. Moreover, the method can be further extended into domains outside the original scope of this project, e.g. to magnetised flows in the sun. With little modification, the method could be adapted to study the upper ocean, whose complex mixing processes are vital to understanding climate. |
| Sectors | Digital/Communication/Information Technologies (including Software) |
| Description | We have been involved in detailed discussions with the UK Met Office, specifically the Convection Division led by Dr Alison Stirling. The Met Office is interested in applying our new computational method, and we have jointly worked out the best way forward to extend our method for realistic applications in weather and climate. A joint PhD student is now working on adding precipitation to our model. This is an evolving impact in its early stages. |
| First Year Of Impact | 2022 |
| Sector | Digital/Communication/Information Technologies (including Software) |
| Impact Types | Societal Policy & public services |
| Description | Convective Cloud Dynamics and Turbulence Interactions with Microphysical Processes and the Atmospheric Environment (CLOUDY TIME) |
| Amount | £912,815 (GBP) |
| Funding ID | NE/X018547/1 |
| Organisation | Natural Environment Research Council |
| Sector | Public |
| Country | United Kingdom |
| Start | 02/2023 |
| End | 08/2026 |
| Title | EPIC - the Elliptical Parcel In Cell method |
| Description | A new numerical method for simulating 2D stratified flows under the Boussinesq approximation. Uses parcels to represent all quantities and an underlying grid for efficiency. |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| Impact | This method has been shown to greatly improve the modelling of density stratified flows, reaching higher accuracy and efficiency than standard methods. |
| Title | EPIC-model/epic: EPIC version 0.12.5 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2023 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.7934543 |
| Title | EPIC-model/epic: EPIC version 0.12.6 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics. Note: This is the last version of EPIC with a serial 3D model. |
| Type Of Technology | Software |
| Year Produced | 2023 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.8167827 |
| Title | EPIC-model/epic: EPIC version 0.13.0 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics. MPI-parallel version of the 3D model. |
| Type Of Technology | Software |
| Year Produced | 2023 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.8174052 |
| Title | EPIC-model/epic: EPIC version 0.13.1 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2023 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.8348474 |
| Title | EPIC-model/epic: EPIC version 0.14.0 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2023 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.10211292 |
| Title | EPIC-model/epic: EPIC version 0.14.1 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2024 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.10710859 |
| Title | EPIC-model/epic: EPIC version 0.14.2 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2024 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.13120965 |
| Title | MONC and PMPIC comparison code for EPIC |
| Description | MONC, PMPIC and plotting source codes for the comparison with EPIC. The MONC code is a modified version of https://github.com/Leeds-MONC/monc. Please check the correct MONC and PMPIC citation if you use them in your work. |
| Type Of Technology | Software |
| Year Produced | 2023 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.10156408 |
| Title | MONC and PMPIC comparison code for EPIC |
| Description | MONC, PMPIC and plotting source codes for the comparison with EPIC. The MONC code is a modified version of https://github.com/Leeds-MONC/monc. Please check the correct MONC and PMPIC citation if you use them in your work. |
| Type Of Technology | Software |
| Year Produced | 2023 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.10156409 |
| Title | matt-frey/epic: EPIC version 0.10.6 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.5940226 |
| Title | matt-frey/epic: EPIC version 0.10.7 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.5992887 |
| Title | matt-frey/epic: EPIC version 0.10.8 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.6012883 |
| Title | matt-frey/epic: EPIC version 0.10.8 with static TG |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics This version of EPIC can only simulate the static Taylor-Green vortex test case. |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.6560922 |
| Title | matt-frey/epic: EPIC version 0.11.0 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.6080725 |
| Title | matt-frey/epic: EPIC version 0.12.0 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.6302652 |
| Title | matt-frey/epic: EPIC version 0.12.1 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.6343892 |
| Title | matt-frey/epic: EPIC version 0.12.2 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.6425789 |
| Title | matt-frey/epic: EPIC version 0.12.3 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2022 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.6997439 |
| Title | matt-frey/epic: EPIC version 0.12.4 |
| Description | The Elliptical Parcel-In-Cell (EPIC) model for fluid dynamics |
| Type Of Technology | Software |
| Year Produced | 2023 |
| Open Source License? | Yes |
| URL | https://zenodo.org/doi/10.5281/zenodo.7748982 |
| Description | A fully Lagrangian approach to modelling convection (5th Convective scale workshop) |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Lighning talk on EPIC at the 5th Convective scale workshop (Convection processes session), organised by the Met Office Unified Model partnership |
| Year(s) Of Engagement Activity | 2022 |
| Description | ARCHER2 Celebration of Science Event |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | Participation in the poster session of the ARCHER2 Celebration of Science event (https://www.archer2.ac.uk/community/events/celebration-of-science-2024/). |
| Year(s) Of Engagement Activity | 2024 |
| URL | https://www.archer2.ac.uk/community/events/celebration-of-science-2024/ |
| Description | An invited talk entitled "A new Lagrangian-based approach to studying highly-turbulent fluid flows" |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Professional Practitioners |
| Results and Impact | The Solar and Magnetospheric Theory Group at the University of St Andrews organised an informal, one-day mini-conference called "The SMTG Code Forum" at the Mathematical Institute. The aim of the conference day was to offer an overview of various fluid and plasma codes and their applications. |
| Year(s) Of Engagement Activity | 2024 |
| Description | Clouds and coherent structures (Coherent Structures in Astro-Geo-Turbulence Workshop, Flatiron Institute) |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | A group of experts attended this talk, which was part of a workshop in preparation for a grant submission. |
| Year(s) Of Engagement Activity | 2022 |
| Description | Conference talk entitled "A new Lagrangian-based approach to studying highly-turbulent fluid flows" |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | The talk was given at the PASC24 conference (https://pasc24.pasc-conference.org/) to advertise our new developed numerical model. |
| Year(s) Of Engagement Activity | 2024 |
| URL | https://pasc24.pasc-conference.org/presentation/?id=msa180&sess=sess161 |
| Description | EPIC workshop (Trieste) |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Postgraduate students |
| Results and Impact | About 25 PGRs and postdocs participated in a workshop learning to work with the EPIC software package at the workshop in Trieste (ICTP). This was part of the 5th Summer School on Theory, Mechanisms and Hierarchical Modelling of Climate Dynamics: Convection and Clouds. |
| Year(s) Of Engagement Activity | 2024 |
| URL | https://github.com/EPIC-model/workshop |
| Description | EPIC workshop Leeds |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Postgraduate students |
| Results and Impact | 11 people participated in a workshop to familiarise themselves with the EPIC software |
| Year(s) Of Engagement Activity | 2024 |
| URL | https://github.com/EPIC-model/workshop |
| Description | EPIC: the Elliptical Parcel-In-Cell Method (meeting at UK Met Office, November 2022) |
| Form Of Engagement Activity | A formal working group, expert panel or dialogue |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | Contribution to EPIC meeting at the Uk Met Office (project partner), group presentaiton given by Matthias Frey, David Dritschel and Steven Boeing. |
| Year(s) Of Engagement Activity | 2022 |
| Description | Essentially Lagrangian simulation of turbulence, mixing and phase transitions with the Ellipsoidal Parcel-in-Cell model (Leipzig Meteorological Colloquium) |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Seminar talk at the Leipzig Meteorological Colloquium (held jointly between the Leibniz Institute for Tropospheric Research and University of Leipzig). About 15 participants (partially online). |
| Year(s) Of Engagement Activity | 2022 |
| Description | Invited talk entitled "The 3D Elliptical Parcel-In-Cell (EPIC) method" |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Invitation to give a talk at the Paul Scherrer Institute (PSI) in Switzerland. The purpose was to acquire additional interest in EPIC. |
| Year(s) Of Engagement Activity | 2024 |
| URL | https://indico.psi.ch/event/16118/ |
| Description | Karlsruher Meteorologisches Kolloquium, 13 July 2021 (virtual) - S Boeing |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Seminar given at Karlsruhe Institute of Technology, which is one of the global leading centres for atmospheric research. |
| Year(s) Of Engagement Activity | 2022 |
| Description | Poster at the 5th Summer School on Theory, Mechanisms and Hierarchical Modelling of Climate Dynamics: Convection and Clouds |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Poster about EPIC at the 5th Summer School on Theory, Mechanisms and Hierarchical Modelling of Climate Dynamics: Convection and Clouds. |
| Year(s) Of Engagement Activity | 2024 |
| URL | https://indico.ictp.it/event/10490 |
| Description | The Royal Meteorological Society's Quarterly Journal: celebrating 150?years |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | Alan Blyth and Steven Boeing give a talk which included work from CLOUDY TIME and our ongoing EPSRC grant at the 150th birthday of Royal Meteorological Society's Quarterly Journal. |
| Year(s) Of Engagement Activity | 2023 |
| URL | https://www.rmets.org/event/quarterly-journal-150-years |
| Description | Workshop on Spatial Organisation of Convection, Clouds and Precipitation, May 5 2021, Niels Bohr Institute (virtual poster) by S Boeing |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Virtual poster presentation at a workshop for specialists in the field of atmospheric convection |
| Year(s) Of Engagement Activity | 2021 |