The first Met Office Unified Model-JULES Regional Atmosphere and Land configuration, RAL1

Mike Bush; Tom Allen; Caroline Bain; Ian Boutle; John Edwards; Anke Finnenkoetter; Charmaine Franklin; Kirsty Hanley; Humphrey Lean; Adrian Lock; James Manners; Marion Mittermaier; Cyril Morcrette; Rachel North; Jon Petch; Chris Short; Simon Vosper; David Walters; Stuart Webster; Mark Weeks; Jonathan Wilkinson; Nigel Wood; Mohamed Zerroukat

doi:10.5194/gmd-13-1999-2020

The first Met Office Unified Model-JULES Regional Atmosphere and Land configuration, RAL1

Mike Bush, Tom Allen, Caroline Bain, Ian Boutle, John Edwards, Anke Finnenkoetter, Charmaine Franklin, Kirsty Hanley, Humphrey Lean, Adrian Lock, James Manners, Marion Mittermaier, Cyril Morcrette, Rachel North, Jon Petch, Chris Short, Simon Vosper, David Walters, Stuart Webster, Mark WeeksJonathan Wilkinson, Nigel Wood, Mohamed Zerroukat

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Abstract

In this paper we define the first Regional Atmosphere and Land (RAL) science configuration for kilometre-scale modelling using the Unified Model (UM) as the basis for the atmosphere and the Joint UK Land Environment Simulator (JULES) for the land. RAL1 defines the science configuration of the dynamics and physics schemes of the atmosphere and land. This configuration will provide a model baseline for any future weather or climate model developments to be described against, and it is the intention that from this point forward significant changes to the system will be documented in the literature. This reproduces the process used for global configurations of the UM, which was first documented as a science configuration in 2011. While it is our goal to have a single defined configuration of the model that performs effectively in all regions, this has not yet been possible. Currently we define two sub-releases, one for mid-latitudes (RAL1-M) and one for tropical regions (RAL1-T). The differences between RAL1-M and RAL1-T are documented, and where appropriate we define how the model configuration relates to the corresponding configuration of the global forecasting model.

Original language	English
Article number	92
Pages (from-to)	1999-2029
Number of pages	31
Journal	Geoscientific Model Development
Volume	13
Issue number	4
DOIs	https://doi.org/10.5194/gmd-13-1999-2020
State	Published - Apr 21 2020

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Bush, M., Allen, T., Bain, C., Boutle, I., Edwards, J., Finnenkoetter, A., Franklin, C., Hanley, K., Lean, H., Lock, A., Manners, J., Mittermaier, M., Morcrette, C., North, R., Petch, J., Short, C., Vosper, S., Walters, D., Webster, S., ... Zerroukat, M. (2020). The first Met Office Unified Model-JULES Regional Atmosphere and Land configuration, RAL1. Geoscientific Model Development, 13(4), 1999-2029. Article 92. https://doi.org/10.5194/gmd-13-1999-2020

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title = "The first Met Office Unified Model-JULES Regional Atmosphere and Land configuration, RAL1",

abstract = "In this paper we define the first Regional Atmosphere and Land (RAL) science configuration for kilometre-scale modelling using the Unified Model (UM) as the basis for the atmosphere and the Joint UK Land Environment Simulator (JULES) for the land. RAL1 defines the science configuration of the dynamics and physics schemes of the atmosphere and land. This configuration will provide a model baseline for any future weather or climate model developments to be described against, and it is the intention that from this point forward significant changes to the system will be documented in the literature. This reproduces the process used for global configurations of the UM, which was first documented as a science configuration in 2011. While it is our goal to have a single defined configuration of the model that performs effectively in all regions, this has not yet been possible. Currently we define two sub-releases, one for mid-latitudes (RAL1-M) and one for tropical regions (RAL1-T). The differences between RAL1-M and RAL1-T are documented, and where appropriate we define how the model configuration relates to the corresponding configuration of the global forecasting model.",

author = "Mike Bush and Tom Allen and Caroline Bain and Ian Boutle and John Edwards and Anke Finnenkoetter and Charmaine Franklin and Kirsty Hanley and Humphrey Lean and Adrian Lock and James Manners and Marion Mittermaier and Cyril Morcrette and Rachel North and Jon Petch and Chris Short and Simon Vosper and David Walters and Stuart Webster and Mark Weeks and Jonathan Wilkinson and Nigel Wood and Mohamed Zerroukat",

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doi = "10.5194/gmd-13-1999-2020",

language = "English",

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Bush, M, Allen, T, Bain, C, Boutle, I, Edwards, J, Finnenkoetter, A, Franklin, C, Hanley, K, Lean, H, Lock, A, Manners, J, Mittermaier, M, Morcrette, C, North, R, Petch, J, Short, C, Vosper, S, Walters, D, Webster, S, Weeks, M, Wilkinson, J, Wood, N & Zerroukat, M 2020, 'The first Met Office Unified Model-JULES Regional Atmosphere and Land configuration, RAL1', Geoscientific Model Development, vol. 13, no. 4, 92, pp. 1999-2029. https://doi.org/10.5194/gmd-13-1999-2020

TY - JOUR

T1 - The first Met Office Unified Model-JULES Regional Atmosphere and Land configuration, RAL1

AU - Bush, Mike

AU - Allen, Tom

AU - Bain, Caroline

AU - Boutle, Ian

AU - Edwards, John

AU - Finnenkoetter, Anke

AU - Franklin, Charmaine

AU - Hanley, Kirsty

AU - Lean, Humphrey

AU - Lock, Adrian

AU - Manners, James

AU - Mittermaier, Marion

AU - Morcrette, Cyril

AU - North, Rachel

AU - Petch, Jon

AU - Short, Chris

AU - Vosper, Simon

AU - Walters, David

AU - Webster, Stuart

AU - Weeks, Mark

AU - Wilkinson, Jonathan

AU - Wood, Nigel

AU - Zerroukat, Mohamed

PY - 2020/4/21

Y1 - 2020/4/21

N2 - In this paper we define the first Regional Atmosphere and Land (RAL) science configuration for kilometre-scale modelling using the Unified Model (UM) as the basis for the atmosphere and the Joint UK Land Environment Simulator (JULES) for the land. RAL1 defines the science configuration of the dynamics and physics schemes of the atmosphere and land. This configuration will provide a model baseline for any future weather or climate model developments to be described against, and it is the intention that from this point forward significant changes to the system will be documented in the literature. This reproduces the process used for global configurations of the UM, which was first documented as a science configuration in 2011. While it is our goal to have a single defined configuration of the model that performs effectively in all regions, this has not yet been possible. Currently we define two sub-releases, one for mid-latitudes (RAL1-M) and one for tropical regions (RAL1-T). The differences between RAL1-M and RAL1-T are documented, and where appropriate we define how the model configuration relates to the corresponding configuration of the global forecasting model.

AB - In this paper we define the first Regional Atmosphere and Land (RAL) science configuration for kilometre-scale modelling using the Unified Model (UM) as the basis for the atmosphere and the Joint UK Land Environment Simulator (JULES) for the land. RAL1 defines the science configuration of the dynamics and physics schemes of the atmosphere and land. This configuration will provide a model baseline for any future weather or climate model developments to be described against, and it is the intention that from this point forward significant changes to the system will be documented in the literature. This reproduces the process used for global configurations of the UM, which was first documented as a science configuration in 2011. While it is our goal to have a single defined configuration of the model that performs effectively in all regions, this has not yet been possible. Currently we define two sub-releases, one for mid-latitudes (RAL1-M) and one for tropical regions (RAL1-T). The differences between RAL1-M and RAL1-T are documented, and where appropriate we define how the model configuration relates to the corresponding configuration of the global forecasting model.

UR - https://www.scopus.com/pages/publications/85083902235

U2 - 10.5194/gmd-13-1999-2020

DO - 10.5194/gmd-13-1999-2020

M3 - Article

AN - SCOPUS:85083902235

SN - 1991-959X

VL - 13

SP - 1999

EP - 2029

JO - Geoscientific Model Development

JF - Geoscientific Model Development

IS - 4

M1 - 92

ER -

The first Met Office Unified Model-JULES Regional Atmosphere and Land configuration, RAL1

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