Model output data from UKESM1 and HadGEM3-GC3.1 is now being published on the Earth system grid federation (ESGF). Documentation and first analysis of these models is being published in a special issue of JAMES.
See below of a summary of the data which is available now, and that which will be published soon. To download the data, go to the CEDA ESGF node. To search for the UK models specifically, you will need to select the corresponding “Source ID”. These are abbreviations of the full model names to comply with CMIP technical requirements:
|Model||Resolution||CMIP Source ID||DECK simulations|
|HadGEM3-GC3.1||N216ORCA025||HadGEM3-GC31-MM||Completed, to be published|
|HadGEM3-GC3.1||N512ORCA025||HadGEM3-GC31-HM||None, see note 2|
|HadGEM3-GC3.1||N96ORCA025||HadGEM3-GC31-LM||None, see note 2|
- LL, HM etc are abbreviations for the model resolution (Low, Medium, High). The first letter indicates the atmosphere resolution; the second indicates the ocean resolution.
- DECK is a set of core experiments for CMIP, consisting of: piControl, abrupt4xCO2, 1pctCO2, AMIP. The N512ORCA025 and N96ORCA025 resolutions of HadGEM3-GC3.1 are used solely for HighResMIP; there are no DECK experiments for these configurations.
The data published so far consists of monthly and daily frequency data for a high-priority subset of variables. More variables and frequencies will follow.
Data published (a subset of monthly and daily frequency variables):
- UKESM1.0-N96ORCA1 DECK
- UKESM1.0-N96ORCA1 Historical: 9 ensemble members
- UKESM1.0-N96ORCA1 ScenarioMIP: Tier 1 and Tier 2 scenarios; 5 ensemble members
- UKESM1.0-N96ORCA1: Some experiments for AerChemMIP, C4MIP, LUMIP
- HadGEM3-GC3.1-N96ORCA1 DECK and historical
- HadGEM3-GC3.1-(various resolutions): HighResMIP
- HadGEM3-GC3.1-N96ORCA1: Some experiments for RFMIP, DAMIP
Available soon (a subset of monthly and daily frequency variables):
- HadGEM3-GC3.1-N216ORCA025 DECK and historical
- UKESM1.0-N96ORCA1 Historical: 7 more ensemble members
- Additional variables for all of the experiments above
- Additional experiments for the MIPs above
- UKESM1.0-N96ORCA1: GeoMIP
- HadGEM3-GC3.1-N96ORCA1: CFMIP
- Definition of
variant-idin file metadata (i.e.
- ES-DOC model description metadata
- Dataset errata (notifications of errors and corrections)
- JASMIN users can access CMIP6 data directly at /badc/cmip6/data/CMIP6
Background to CMIP6
As modeling capability has advanced, the need to quantitatively evaluate Earth System Models (ESMs) has also grown. To address this, Working Group on Coupled Modeling (WGCM) of the World Climate Research Programme (WCRP) has initiated a series of Coupled Model Intercomparison Projects (CMIP). In preparation for the IPCC Sixth Assessment, the CMIP Phase 6, CMIP6, was launched. A brief summary can be found in the following overview presentation (CMIP6FinalDesign_GMD_160603.pdf).
The organization of CMIP6 is more distributed than in previous rounds. It contains twenty individual Model Intercomparison Projects (MIPs), each focused on a specific area of Earth system science. In addition, there is a set of fundamental (or DECK) experiments which will be run for each model in order to characterize its performance, and provide a reference point for the various MIP experiments. See the World Climate Research Programme website for more details on CMIP6 and the underlying MIPs that constitute CMIP6.
The UK contribution to CMIP6
CMIP6 will be an important application of UKESM models. CMIP6 aims to improve our understanding of, and ability to simulate, key climate phenomena and future climate change using a coordinated multi-model approach. In CMIP6, UKESM1 and other climate models from around the world will be integrated using a common set of experiment protocols to address a range of key science questions.
The UK contribution to CMIP6 will come from the Met Office, NERC centres and UK universities and is being coordinated through a number of thematic groups (see the article in Newsletter No 2:“UK Plans for CMIP6” for more information) currently working on tasks such as:
- ensuring model components meet the technical requirements for CMIP6;
- providing technical support for model runs, data conversion and delivery;
- sharing good practice (including experiment setup) across MIPs and coordinating MIP numerical experiments.
More detailed information about CMIP6 workshops and UK preparations for CMIP6 is available on the Met Office website (https://code.metoffice.gov.uk/trac/ukcmip6/).
Institutions in other countries are also using the UK models to contribute to CMIP6 – for example, the National Institute of Meteorological Science / Korean Meteorological Administration (NIMS-KMA) and New Zealand’s National Institute of Weather and Atmospheric Research (NIWA) are performing selected simulations from the historical, ScenarioMIP and AerChemMIP experiments using UKESM1. The results from these simulations will be made available on ESGF alongside those run by UK institutions using the same model.
A 2020 CMIP6 Analysis workshop will take place at the Met Office in Exeter on 20-21 April 2020. The aim of this 2-day meeting is to bring together UK scientists working on the analysis of CMIP6 simulations to present and discuss their work. Further information: https://ukesm.ac.uk/cmip6-analysis-workshop-20-21-april-2020/
For more information about the UK CMIP6 workshop held on Feb 27th in Oxford, please visit https://ukesm.ac.uk/cmip6/uk-cmip6-workshop-feb2019-oxford/.