0b011472-c766-4190-8718-8cf4be95daa6 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2023-09-25 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 MetUM high-resolution simulations of extreme warm temperature events over South Orkney Islands from 1 to 17 January 1991 2023-09-25 creation 2023-09-25 revision 2023-09-25 publication 2023-09-25 released 1.0 https://doi.org/10.5285/0b011472-c766-4190-8718-8cf4be95daa6 doi GB/NERC/BAS/PDC/01776 https://data.bas.ac.uk/ NE/X009319/1 award Please cite this item as: Orr, A., & Phillips, T. (2023). MetUM high-resolution simulations of extreme warm temperature events over South Orkney Islands from 1 to 17 January 1991 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/0b011472-c766-4190-8718-8cf4be95daa6 High-resolution simulations of extreme warm temperature events over South Georgia Islands using the UK Met Office Unified Model (MetUM) were conducted at the British Antarctic Survey. The simulations are conducted for the period 1 to 17 January 1991, which included an event in which the temperature at Signy station peaked at 17.4 degrees Celsius on 13 January 1991, as well as a series of consecutive warm events preceding this. The dataset consists of 1) 10 m zonal wind, 10 m meridional wind, 1.5 m temperature, 1.5 m dew point temperature, 1.5 m relative humidity, and mean sea level pressure at a temporal resolution of every 1 hr for the period 1 to 17 January, 2) zonal wind, meridional wind, vertical wind, and potential temperature on model levels at 00UTC 13 January, and 3) rainfall rate at 00 UTC 13 January (averaged over a 3-hr period). The MetUM is run over a domain that includes South Orkney Islands and the surrounding ocean, which comprises 120 x 120 grid points at a grid spacing of 1 km. The model output is used to investigate the detailed influence of South Orkney Islands orography on temperature, precipitation, and winds, and in particular the importance of foehn events in producing extreme warm temperatures at Signy station. Funding: 1) Core funding from the Natural Environment Research Council (NERC) to the Atmosphere, Ice and Climate Programme of British Antarctic Survey (BAS). 2) NERC National Capability International grant SURface FluxEs In AnTarctica (NE/X009319/1). 3) European Union's Horizon 2020 research and innovation framework programme under Grant agreement no. 101003590 (PolarRES). No credit. completed Orr, Andrew British Antarctic Survey Researcher author Phillips, Tony British Antarctic Survey Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Atmosphere > Atmospheric Temperature theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher MetUM extreme warm temperature events fohn events high-resolution atmospheric modelling theme South Orkney Islands place Atmospheric conditions theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions Data supplied under Open Government Licence v3.0 otherRestrictions No restrictions apply. url url largerWorkCitation url url largerWorkCitation url url crossReference textTable eng utf8 climatologyMeteorologyAtmosphere -46.38 -44.15 -61.14 -60.06 1991-01-01 1991-01-17 It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor application/x-hdf application/netcdf bytes 62914560 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=0b011472-c766-4190-8718-8cf4be95daa6 WWW:LINK-1.0-http--link Get Data Download data download bytes 62914560 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=0b011472-c766-4190-8718-8cf4be95daa6 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: The UK Met Office Unified Model (known as MetUM) uses the Regional Atmosphere physics configuration for mid-latitudes (RA1M; Bush et al. 2020) configuration of version 13. The MetUM uses 70 vertical levels in the atmosphere. The MetUM model setup uses three (one-way) nested domains with horizontal grid spacings of 12, 4 and 1 km, comprising 100 x 100, 100 x 100, and 120 x 120 grid points, respectively. The innermost 1 km domain covers the South Orkney Islands and surrounding ocean, and uses orography derived from the 100 m resolution Radarsat Antarctic Mapping Project (RAMP) digital elevation model. Initial and boundary conditions for the outermost 12 km domain are supplied by a global version of the MetUM at N512 resolution (1024 x 768 grid points, equivalent to a horizontal resolution of ~25 km at midlatitudes), which is initialised with ERA5 data. The 12 km model is subsequently used to produce initial and boundary conditions for the 4 km model, which in turn produces initial and boundary conditions for the 1 km model. The model is run twice-daily at 00 and 12 UTC to produce a series of 24 h forecasts. The initial 12 h of each forecast is discarded as spin-up, with the remaining part of the forecasts concatenated together to form a continuous time series. asNeeded completed