Polar Weather Research and Forecasting (WRF) simulation of West Antarctic climate, summer 1980-2015

High-resolution simulation of summer climate over West Antarctica using the Polar-optimised version of the Weather Research and Forecasting (WRF) model conducted at British Antarctic Survey, Cambridge, UK. Runs are conducted for summer (January-centred) 1980-2015, i.e. from December 1979 to February 2015, for December, January and February (DJF). Experiments were carried out for the NERC West Antarctic Grant (NE/K00445X/1) during 2014-2017. The project is aimed at understanding the variability and climatology over the West Antarctic ice sheet and ice shelves as well as to project the future change over the twenty-first century.

The model outer domain encompasses the West Antarctic ice sheet and a large part of the surrounding ocean at 45 km horizontal grid spacing, and the nested (one-way) inner domain covers the Amundsen Sea Embayment at 15 km grid spacing. The model uses vertical eta coordinates with both domains have a model top of 50 hPa, and 30 vertical levels.

Date (Creation): 2018-03-13

Date (Revision): 2018-03-13

Date (Publication): 2018-03-13

Date (released): 2018-03-13

Edition: None

Unique resource identifier: https://doi.org/10.5285/9536f22e-37dd-4f37-948b-e19c70e15292

Codespace: doi

Unique resource identifier: GB/NERC/BAS/PDC/01071

Codespace: https://data.bas.ac.uk/

Unique resource identifier: NE/K00445X/1

Codespace: award

Other citation details: Please cite this item as: Deb, P., Orr, A., & Turner, J. (2018). Polar Weather Research and Forecasting (WRF) simulation of West Antarctic climate, summer 1980-2015 (Version None) [Data set]. Polar Data Centre, Natural Environment Research Council, UK. https://doi.org/10.5285/9536f22e-37dd-4f37-948b-e19c70e15292

Credit: No credit.

Status: Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of East Anglia	Deb, Pranab		Author
British Antarctic Survey	Orr, Andrew		Author
British Antarctic Survey	Turner, John		Author
British Antarctic Survey	Phillips, Tony		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency: As needed

Maintenance note: Completed

Global Change Master Directory (GCMD) Science Keywords

Theme

Polar WRF
West Antarctica
high-resolution regional modelling
hindcast

Place

West Antarctica Antarctica

GEMET - INSPIRE themes, version 1.0

Access constraints: Other restrictions

Other constraints: no limitations to public access

Access constraints: Other restrictions

Other constraints: no limitations

Use constraints: License

Other constraints: Open Government Licence v3.0

Use constraints: Other restrictions

Other constraints: This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/

Use constraints: Other restrictions

Other constraints: DATA REFERENCE

Deb, P., Orr, A. & Turner, J. "Polar Weather Research and Forecasting (WRF) simulation of West Antarctic climate, summer 1980-2015" (2018) Polar Data Centre, Natural Environment Research Council, UK doi:10.5285/9536f22e-37dd-4f37-948b-e19c70e15292

LITERATURE REFERENCE

Deb et al., 2016 and Deb et al., 2018.

Use constraints: Other restrictions

Other constraints: No restrictions apply.

Unique resource identifier: url

Codespace: url

Association Type: Cross reference

Unique resource identifier: doi

Codespace: doi

Association Type: Cross reference

Spatial representation type: Text, table

Language: English

Character set: UTF8

Topic category

Climatology, meteorology, atmosphere

Begin date: 1979-12-01

End date: 2015-02-28

Supplemental Information: 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.

Title: European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication): 2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier: urn:ogc:def:crs:EPSG::3031

Version: 6.18.3

Distributor

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Distributor

Units of distribution: bytes

Transfer size: 1

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://ramadda.data.bas.ac.uk/repository/entry/show/?entryid=9536f22e-37dd-4f37-948b-e19c70e15292	Get Data

Hierarchy level: Dataset

Statement: Methodology:

The model uses the recommended configuration of version 3.5.1 of the polar modified Weather Research and Forecasting model (known as "Polar WRF"; Bromwich et al., 2013) for West Antarctica described by Deb et al. (2016). The model physics employed are - the WRF Single Moment 5-Class (WSM5) cloud microphysics scheme, the Mellor-Yamada-Janjic (MYJ) boundary layer scheme, the Rapid Radiative Transfer Model for General Circulation Models (RRTMG), and the Noah land surface model.

The model outer domain encompasses the West Antarctic ice sheet and a large part of the surrounding ocean with 74 x 61 grid points at 45 km horizontal grid spacing centred on the point 72.7°S, 118.5°W, and the nested (one-way) inner domain covers the Amundssen Sea Embayment with 132 × 111 grid points at 15 km grid spacing centred on the point 73.5°S, 118.4°W. Both grids are defined on a polar stereographic projection with straight vertical longitude 120.5°W and latitude of true scale 70°S. The inner domain has longitude extremes at 164.1°W and 73.1°W, and latitude extremes at 81.1°S and 64.3°S (though the grid, being rectangular in polar stereographic space, does not completely fill this extent). In the vertical, both domains extend from the surface to 50 hPa, with 30 vertical levels.

The model employs spectral nudging (outer domain and wave numbers 1-5 only, from approximately 1.5 km to the model top), high-resolution orography based on the Bedmap2 dataset, and meteorological forcing from ERA-Interim reanalysis (Dee et al., 2011). Additionally, the surface boundary forcing of the model includes daily satellite observations of sea ice concentration (based on the 25 km resolution Bootstrap data set; Comiso, 2000) and sea surface temperature (based on the 0.25° Advanced Very High Resolution Radiometer (AVHRR) data set; Casey et al., 2010). The hindcast was produced by running separate simulations for each of the summer months from December 1979 to February 2015 (with 24 hr spin up).

Python 2.7.3 version was used for post-processing. The netCDF4 library was used to extract the hourly model data and produce the monthly means (using the NumPy Python library). The monthly means were stored in binary npz format which can be easily loaded on Python. See the following link on how to save and load npz files on Python:

https://docs.scipy.org/doc/numpy/reference/routines.io.html#numpy-binary-files-npy-npz

Metadata

File identifier: 9536f22e-37dd-4f37-948b-e19c70e15292 XML

Metadata language: English

Character set: UTF8

Hierarchy level: Dataset

Hierarchy level name: dataset

Date stamp: 2018-03-13

Metadata standard name: ISO 19115 Geographic Information - Metadata

Metadata standard version: ISO 19115:2003(E)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact

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