The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations
We describe Global Atmosphere 7.0 and Global Land 7.0 (GA7.0/GL7.0), the latest science configurations of the Met Office Unified Model (UM) and the Joint UK Land Environment Simulator (JULES) land surface model developed for use across weather and climate timescales. GA7.0 and GL7.0 include incremen...
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Online Access: | https://doi.org/10.5194/gmd-12-1909-2019 https://gmd.copernicus.org/articles/12/1909/2019/ |
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ftcopernicus:oai:publications.copernicus.org:gmd63292 2023-05-15T18:25:34+02:00 The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations Walters, David Baran, Anthony J. Boutle, Ian Brooks, Malcolm Earnshaw, Paul Edwards, John Furtado, Kalli Hill, Peter Lock, Adrian Manners, James Morcrette, Cyril Mulcahy, Jane Sanchez, Claudio Smith, Chris Stratton, Rachel Tennant, Warren Tomassini, Lorenzo Weverberg, Kwinten Vosper, Simon Willett, Martin Browse, Jo Bushell, Andrew Carslaw, Kenneth Dalvi, Mohit Essery, Richard Gedney, Nicola Hardiman, Steven Johnson, Ben Johnson, Colin Jones, Andy Jones, Colin Mann, Graham Milton, Sean Rumbold, Heather Sellar, Alistair Ujiie, Masashi Whitall, Michael Williams, Keith Zerroukat, Mohamed 2019-05-14 application/pdf https://doi.org/10.5194/gmd-12-1909-2019 https://gmd.copernicus.org/articles/12/1909/2019/ eng eng doi:10.5194/gmd-12-1909-2019 https://gmd.copernicus.org/articles/12/1909/2019/ eISSN: 1991-9603 Text 2019 ftcopernicus https://doi.org/10.5194/gmd-12-1909-2019 2020-07-20T16:22:50Z We describe Global Atmosphere 7.0 and Global Land 7.0 (GA7.0/GL7.0), the latest science configurations of the Met Office Unified Model (UM) and the Joint UK Land Environment Simulator (JULES) land surface model developed for use across weather and climate timescales. GA7.0 and GL7.0 include incremental developments and targeted improvements that, between them, address four critical errors identified in previous configurations: excessive precipitation biases over India, warm and moist biases in the tropical tropopause layer (TTL), a source of energy non-conservation in the advection scheme and excessive surface radiation biases over the Southern Ocean. They also include two new parametrisations, namely the UK Chemistry and Aerosol (UKCA) GLOMAP-mode (Global Model of Aerosol Processes) aerosol scheme and the JULES multi-layer snow scheme, which improve the fidelity of the simulation and were required for inclusion in the Global Atmosphere/Global Land configurations ahead of the 6th Coupled Model Intercomparison Project (CMIP6). In addition, we describe the GA7.1 branch configuration, which reduces an overly negative anthropogenic aerosol effective radiative forcing (ERF) in GA7.0 whilst maintaining the quality of simulations of the present-day climate. GA7.1/GL7.0 will form the physical atmosphere/land component in the HadGEM3–GC3.1 and UKESM1 climate model submissions to the CMIP6. Text Southern Ocean Copernicus Publications: E-Journals Jules ENVELOPE(140.917,140.917,-66.742,-66.742) Southern Ocean Geoscientific Model Development 12 5 1909 1963 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
We describe Global Atmosphere 7.0 and Global Land 7.0 (GA7.0/GL7.0), the latest science configurations of the Met Office Unified Model (UM) and the Joint UK Land Environment Simulator (JULES) land surface model developed for use across weather and climate timescales. GA7.0 and GL7.0 include incremental developments and targeted improvements that, between them, address four critical errors identified in previous configurations: excessive precipitation biases over India, warm and moist biases in the tropical tropopause layer (TTL), a source of energy non-conservation in the advection scheme and excessive surface radiation biases over the Southern Ocean. They also include two new parametrisations, namely the UK Chemistry and Aerosol (UKCA) GLOMAP-mode (Global Model of Aerosol Processes) aerosol scheme and the JULES multi-layer snow scheme, which improve the fidelity of the simulation and were required for inclusion in the Global Atmosphere/Global Land configurations ahead of the 6th Coupled Model Intercomparison Project (CMIP6). In addition, we describe the GA7.1 branch configuration, which reduces an overly negative anthropogenic aerosol effective radiative forcing (ERF) in GA7.0 whilst maintaining the quality of simulations of the present-day climate. GA7.1/GL7.0 will form the physical atmosphere/land component in the HadGEM3–GC3.1 and UKESM1 climate model submissions to the CMIP6. |
format |
Text |
author |
Walters, David Baran, Anthony J. Boutle, Ian Brooks, Malcolm Earnshaw, Paul Edwards, John Furtado, Kalli Hill, Peter Lock, Adrian Manners, James Morcrette, Cyril Mulcahy, Jane Sanchez, Claudio Smith, Chris Stratton, Rachel Tennant, Warren Tomassini, Lorenzo Weverberg, Kwinten Vosper, Simon Willett, Martin Browse, Jo Bushell, Andrew Carslaw, Kenneth Dalvi, Mohit Essery, Richard Gedney, Nicola Hardiman, Steven Johnson, Ben Johnson, Colin Jones, Andy Jones, Colin Mann, Graham Milton, Sean Rumbold, Heather Sellar, Alistair Ujiie, Masashi Whitall, Michael Williams, Keith Zerroukat, Mohamed |
spellingShingle |
Walters, David Baran, Anthony J. Boutle, Ian Brooks, Malcolm Earnshaw, Paul Edwards, John Furtado, Kalli Hill, Peter Lock, Adrian Manners, James Morcrette, Cyril Mulcahy, Jane Sanchez, Claudio Smith, Chris Stratton, Rachel Tennant, Warren Tomassini, Lorenzo Weverberg, Kwinten Vosper, Simon Willett, Martin Browse, Jo Bushell, Andrew Carslaw, Kenneth Dalvi, Mohit Essery, Richard Gedney, Nicola Hardiman, Steven Johnson, Ben Johnson, Colin Jones, Andy Jones, Colin Mann, Graham Milton, Sean Rumbold, Heather Sellar, Alistair Ujiie, Masashi Whitall, Michael Williams, Keith Zerroukat, Mohamed The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations |
author_facet |
Walters, David Baran, Anthony J. Boutle, Ian Brooks, Malcolm Earnshaw, Paul Edwards, John Furtado, Kalli Hill, Peter Lock, Adrian Manners, James Morcrette, Cyril Mulcahy, Jane Sanchez, Claudio Smith, Chris Stratton, Rachel Tennant, Warren Tomassini, Lorenzo Weverberg, Kwinten Vosper, Simon Willett, Martin Browse, Jo Bushell, Andrew Carslaw, Kenneth Dalvi, Mohit Essery, Richard Gedney, Nicola Hardiman, Steven Johnson, Ben Johnson, Colin Jones, Andy Jones, Colin Mann, Graham Milton, Sean Rumbold, Heather Sellar, Alistair Ujiie, Masashi Whitall, Michael Williams, Keith Zerroukat, Mohamed |
author_sort |
Walters, David |
title |
The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations |
title_short |
The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations |
title_full |
The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations |
title_fullStr |
The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations |
title_full_unstemmed |
The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations |
title_sort |
met office unified model global atmosphere 7.0/7.1 and jules global land 7.0 configurations |
publishDate |
2019 |
url |
https://doi.org/10.5194/gmd-12-1909-2019 https://gmd.copernicus.org/articles/12/1909/2019/ |
long_lat |
ENVELOPE(140.917,140.917,-66.742,-66.742) |
geographic |
Jules Southern Ocean |
geographic_facet |
Jules Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
eISSN: 1991-9603 |
op_relation |
doi:10.5194/gmd-12-1909-2019 https://gmd.copernicus.org/articles/12/1909/2019/ |
op_doi |
https://doi.org/10.5194/gmd-12-1909-2019 |
container_title |
Geoscientific Model Development |
container_volume |
12 |
container_issue |
5 |
container_start_page |
1909 |
op_container_end_page |
1963 |
_version_ |
1766207106784952320 |