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Dataset Collection

 
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Met Office Unified Model (UM) Operational Output (October 2000 - January 2012)

Status: Not defined
Publication State: published

Abstract

The Unified Model is the name given to the suite of atmospheric and oceanic numerical modelling software developed and used at the Met Office. The formulation of the model supports global and regional domains and is applicable to a wide range of temporal and spatial scales that allow it to be used for both numerical weather prediction and climate modelling as well as a variety of related research activities. The Unified Model was introduced into operational service in 1991. Since then, both its formulation and capabilities have been substantially enhanced.

Data from the operational NWP (Numerical Weather Prediction) output from the Met Office Unified Model. These data are from both the Global and the North Atlantic European (NAE) part of the model. The NAE model runs on a grid centred around the UK. Analyses and intermediate forecast steps are stored to give an hourly time resolution for 6 hours following each analysis time-step. This archive only holds data to January 2012. A new NWP archive is being populated with data from January 2012. The dataset starts on 23 October 2000, and is ongoing. Around 1.6Gb of data are stored for each day.

Analysis fields at 0,6,12,18Z are stored, along with all of the forecast fields from 1-6 hours from each analysis time.

Mesoscale : lb[a,f][m,p]yyyymmddhh_STASHCODE_fh.pp

Global: ag[a,f][m,p]yyyymmddhh_STASHCODE_fh.pp

where yyyymmddhh is the year, month,day and assimilation time, STASHCODE is the STASHMASTER parameter code, fh is the forecast timestep (from the assimilation time), and pp indicates that the files are in binary "pp" format.

The directory structure has also been changed to bring it in line with the BADC ECMWF holdings. The mesoscale files and global data are now stored under:
/badc/ukmo-um/data/meso/lb/a[m,p] for the analysis fields
/badc/ukmo-um/data/meso/lb/f[m,p] for the forecast fields
/badc/ukmo-um/data/global/ag/a[m,p] for the analysis fields
/badc/ukmo-um/data/global/ag/f[m,p] for the forecast fields
Pre-2004 data are still available in the old format under /badc/ukmo-um/data/mesocale/[sm,mm] and /badc/ukmo-um/data/global/[mg,sg], although these will be phased out as the data are archived in the newer format.

Citable as:Met Office (2013): Met Office Unified Model (UM) Operational Output (October 2000 - January 2012). NCAS British Atmospheric Data Centre, date of citation. http://catalogue.ceda.ac.uk/uuid/104e586395d1cc4af88f5b69d5501745
Abbreviation: Met, Office, -Operational, NWP, D
Keywords: Met Office, UM, NWP

Details

Previous Info:

2013-09-17 NWP Data transfer restored: New NWP archive created Following data transfer issues between the Met Office and the BADC, the Met Office NWP data updates were suspended on 18th January 2012. Show Less

2013-09-17 NWP Data transfer restored: A new data transfer route was established and at the same time, CEDA-BADC decided to revamp the entire NWP archive and created a new NWP archive. This new archive is essentially a mirror of a subset of the NWP archive at the Met Office. Show Less

2010-08-23 NWP archive file changes: Up to now, the NWP data have been split by variable. However, this generates a large number of small files which are difficult to manage. We would like to remove this pre-processing, so that the files are stored in the same form that they are extracted from the Met Office Show Less

2010-04-27 NWP Output field changes: Information concerning the recent changes to the NWP output is available on http://badc.nerc.ac.uk/data/um/UM_Changes_Mar10.html. Show Less

2010-03-15 Global Fields -Change in spatial resolution: It appears that the horizontal resolution of the global fields (on pressure levels) has increased since 09/03/10, and that additional vertical levels have ben added at the top of the height range. Show Less

2008-06-12 NAE Forecast fields: The problems which affected the t+4 to t+6 forecast fields were rectified earlier in the year (March 2008), and these data are now being collected as part of the NWP operational data stream Show Less

2008-06-01 UM rerun data for July 2006: The Met Office have rerun the UM to regenerate data missing from their MASS archive for 08-28/07/2006. These data are available from the BADC at : /badc/ukmo-um/data/reruns/2006/07 Show Less

2008-06-01 UM rerun data for July 2006: The Met Office have rerun the UM to regenerate data missing from their MASS archive for 08-28/07/2006. These data are available from the BADC at : /badc/ukmo-um/data/reruns/2006/07 Show Less

2008-06-01 UM rerun data for July 2006: Unfortuately, it was not possible to add these data to the main archive as they have different output timesteps (e.g. 3,9,15,21 rather than 0,6,12,18). Users wishing to use these data should download them directly from the archive. Show Less

2008-06-01 UM rerun data for July 2006: Unfortuately, it was not possible to add these data to the main archive as they have different output timesteps (e.g. 3,9,15,21 rather than 0,6,12,18). Users wishing to use these data should download them directly from the archive. Show Less

2008-02-21 NAE Missing Forecast fields: We have found that the t+4 to t+6 forecast fields for the NAE data have not been extracted properly from the Met Office archive. This issue has been traced to a change in the way that the Met Office store these data on their system. Show Less

2008-02-21 NAE Missing Forecast fields: We have found that the t+4 to t+6 forecast fields for the NAE data have not been extracted properly from the Met Office archive. This issue has been traced to a change in the way that the Met Office store these data on their system. Show Less

2007-10-17 Problems with Storage Unit: We have experienced a sudden problem with the Network Attached Storage (NAS) unit used to store the ukmo-um dataset. We are currently working to restore the dataset from our backup system, but until this is complete, some data may be unavailable. Show Less

2007-10-17 Problems with Storage Unit: We have experienced a sudden problem with the Network Attached Storage (NAS) unit used to store the ukmo-um dataset. We are currently working to restore the dataset from our backup system, but until this is complete, some data may be unavailable. Show Less

2007-10-08 UM Model naming convention: The Met Office must be acknowledged in any reproduction of data, publication of papers, reports, literature to customers or presentations arising out of the use of the software using: "Met Office Unified ModelTM (UK)" Show Less

2007-10-08 UM Model naming convention: The Met Office must be acknowledged in any reproduction of data, publication of papers, reports, literature to customers or presentations arising out of the use of the software using: "Met Office Unified ModelTM (UK)" Show Less

2007-04-05 Met Office extractions: We are currently in discussions with the Met Office to improve the data recovery process from the Met Office archive, in an effort to fill the gaps which exist. We have made constant efforts over the past years to recover the missing data. Show Less

2007-04-05 Met Office extractions: We are currently in discussions with the Met Office to improve the data recovery process from the Met Office archive, in an effort to fill the gaps which exist. We have made constant efforts over the past years to recover the missing data. Show Less

2006-11-21 NAE model: We have just learned that the UK mesoscale model has been retired. Data from the North Atlantic Europe (NAE) model is intended to replace this data stream (from 1/11/06), though users should be aware that the size of these data files is much larger (~10x the size) Show Less

2006-11-21 NAE model: We have just learned that the UK mesoscale model has been retired. Data from the North Atlantic Europe (NAE) model is intended to replace this data stream (from 1/11/06), though users should be aware that the size of these data files is much larger (~10x the size) Show Less

2005-12-24 Model physics and grids: The global model physics and output grids and levels have changed. Please see this page for more details Show Less

2005-12-24 Model physics and grids: The global model physics and output grids and levels have changed. Please see this page for more details Show Less

2005-12-13 Enhancements to Global model output fields: Global fields are now available on a 640x481 grid, at 50 model levels, top level 65km (this compares with 432x325, 38 model levels, 38km top height). Please see this page for more details. Show Less

2005-12-13 Enhancements to Global model output fields: Global fields are now available on a 640x481 grid, at 50 model levels, top level 65km (this compares with 432x325, 38 model levels, 38km top height). Please see this page for more details. Show Less

2005-06-13 Archive restructuring: Please note that we are in the process of restructuring the BADC NWP archive. All data from 1/1/04 is now held in the new format of 1 diagnostic variable per file per timestep (rather than the field code used previously). Show Less

2005-06-13 Archive restructuring: Please note that we are in the process of restructuring the BADC NWP archive. All data from 1/1/04 is now held in the new format of 1 diagnostic variable per file per timestep (rather than the field code used previously). Show Less

2005-06-13 NWP Server upgrade: The server holding the BADC NWP archive is currently being upgraded to improve stability. The dataset should be back on line by tomorrow (14/6/05) Show Less

2005-06-13 NWP Server upgrade: The server holding the BADC NWP archive is currently being upgraded to improve stability. The dataset should be back on line by tomorrow (14/6/05) Show Less

2004-10-12 Possible problem with UM data from the Met Office MASS system: We had begun to populate the archive with the new data from MASS when it was found that a number of fields showed signs of corruption Show Less

2004-10-12 Possible problem with UM data from the Met Office MASS system: We had begun to populate the archive with the new data from MASS when it was found that a number of fields showed signs of corruption Show Less

2004-02-17 Problems with extraction of UM data from the Met Office:The service was originally disrupted in 2003 due to problems with our machine used to transfer data from the Met Office, and was followed by the upheaval of the physical move of the Met Office to Exeter. Show Less

2004-02-17 Problems with extraction of UM data from the Met Office:The service was originally disrupted in 2003 due to problems with our machine used to transfer data from the Met Office, and was followed by the upheaval of the physical move of the Met Office to Exeter. Show Less

2003-04-30 MDIAG unpacking information added: MDIAG users: The BADC UM data will need to be unpacked before ingestion into MDIAG. Executable to do the unpacking are also available (see under Software utilities). Show Less

2003-04-30 MDIAG unpacking information added: IMPORTANT: byte swapping of these data files may be required before they can be read on your systems. Utilities are available to perform the byte-swapping and convert these files into several other formats such as NetCDF . Show Less

2003-04-30 MDIAG unpacking information added: MDIAG users: The BADC UM data will need to be unpacked before ingestion into MDIAG. Executable to do the unpacking are also available (see under Software utilities). Show Less

2003-04-30 MDIAG unpacking information added: IMPORTANT: byte swapping of these data files may be required before they can be read on your systems. Utilities are available to perform the byte-swapping and convert these files into several other formats such as NetCDF . Show Less

Previously used record identifiers:
http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__dataent_UM
Coverage
Temporal Range
Start time:
1992-01-01T00:00:00
End time:
2012-12-31T00:00:00
Geographic Extent

 
90.0000°
 
-180.0000°
 
180.0000°
 
-90.0000°
 
Related parties
Authors (1)