Full Record - ERA5 daily downscaled surface air temperature and snowfall at two Cordillera Darwin high elevation sites 2000 - 2022 CE

ERA5 daily downscaled surface air temperature and snowfall at two Cordillera Darwin high elevation sites 2000 - 2022 CE

GB/NERC/BAS/PDC/02054

Abstract:
This dataset presents ERA5 daily downscaled surface air temperature and snowfall from two sites next to the first ice core drilled from Cordillera Darwin, Chile. These records were presented in Tetzner et al. (2025) to study regional-to-local environmental conditions at the firn core site. These local surface air temperature and snowfall estimations suggest the icefield has been progressively exposed to surface melt conditions, but not enough to produce significant melt at the firn core site.

This dataset was created with the support of the Dieter R Tetzner's National Geographic Early Career Grant 2019.

Citation:
Tetzner, D., Temme, F., & Furst, J. (2025). ERA5 daily downscaled surface air temperature and snowfall at two Cordillera Darwin high elevation sites 2000 - 2022 CE (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/eddc907c-f8e9-48c4-9f23-de0f674dbee0

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http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=eddc907c-f8e9-48c4-9f23-de0f674dbee0

PROJECT HOME PAGE

https://explorers.nationalgeographic.org/directory/dieter-tetzner

REFERENCE MATERIALS

License

Access:	None
Use:	Data supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Authors

Name	UK PDC
Role(s)	Metadata Author
Organisation	British Antarctic Survey

Name	Dieter Tetzner
Role(s)	Investigator, Technical Contact
Organisation	British Antarctic Survey

Name	Franziska Temme
Role(s)	Investigator
Organisation	Friedrich-Alexander-Universitat Erlangen-Nurnberg

Name	Johannes J Furst
Role(s)	Investigator
Organisation	Friedrich-Alexander-Universitat Erlangen-Nurnberg

Name	Elizabeth R Thomas
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Claire Allen
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Robert D McCulloch
Role(s)	Investigator
Organisation	University of Edinburgh

Name	Dr Bianca Perren
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Amy McGuire
Role(s)	Investigator
Organisation	University of Leeds

Name	Delia Segato
Role(s)	Investigator
Organisation	CNR-Institute of Polar Sciences

Name	Dorothea E Moser
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Francisco Fernandoy
Role(s)	Investigator
Organisation	Universidad Andres Bello

Name	Camilo Rada
Role(s)	Investigator
Organisation	Universidad de Magallanes

Name	Jack Humby
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Shaun Miller
Role(s)	Investigator
Organisation	British Antarctic Survey

Basic Information

Creation Date:	2025-05-02
Dataset Progress:	Complete
Dataset Language:	English
ISO Topic Categories:	Climatology/Meteorology/Atmosphere
Parameters:	Atmosphere > Atmospheric Temperature > Air Temperature Atmosphere > Precipitation > Snow

Additional Information

Reference:	Please cite the paper and data DOI when using this database. Tetzner, D. R.; Thomas, E. R.; Allen, C. S., McCulloch, R. D., Perren B. B., McGuire A., Segato D., Temme F., F�rst J. J., Moser D., Fernandoy F., Rada C., Humby J., Miller S. (2025). The first firn core from the Cordillera Darwin Icefield: implications for future ice core research. JGR Atmospheres.
Quality:	The ERA5 daily downscaled dataset was generated following the downscaling method presented in Temme et al. (2025). Temme, F., Sommer, C., Schaefer, M., Jana, R., Arigony-Neto, J., Gonzalez, I., ... & Furst, J. J. (2025). Climate's firm grip on glacier ablation in the Cordillera Darwin Icefield, Tierra del Fuego. Nature Communications, 16(1), 2677.
Lineage/Methodology:	The downscaling scheme (DOWN) combined statistical downscaling with radiation and orographic precipitation modelling and was applied to ERA5 atmospheric parameters to produce high spatial resolution (200x200m grid cell) climate variables for the CDB site (DOWN-DRILL). The use of this downscaling routine to generate high spatial resolution climate variables was thoroughly implemented and validated in the Cordillera Darwin Region in Temme et al. (2023). Data used in this study was generated with the same inputs as detailed in Temme et al. (2023).Temme, F., Farias-Barahona, D., Seehaus, T., Jana, R., Arigony-Neto, J., Gonzalez, I. & Furst, J. J. (2023). Strategies for regional modeling of surface mass balance at the Monte Sarmiento Massif, Tierra del Fuego. The Cryosphere, 17(6), 2343-2365.

Extent

Temporal Coverage:
Start Date	2000-01-01
End Date	2022-01-01

Spatial Coverage:
Latitude
Southernmost	-54.68
Northernmost	-54.68
Longitude
Westernmost	-69.64
Easternmost	-69.64
Altitude
Min Altitude	2195
Max Altitude	2195
Depth
Min Depth	N/A
Max Depth	N/A

Latitude
Southernmost	-54.68
Northernmost	-54.68
Longitude
Westernmost	-69.63
Easternmost	-69.63
Altitude
Min Altitude	2018
Max Altitude	2018
Depth
Min Depth	N/A
Max Depth	N/A

Location:
Location	Chile
Detailed Location	Cordillera Darwin - Cresta Blanca

Instrumentation

Data Collection:	The dataset was generated using Temme et al. (2023) ERA5 downscaling method. Temme, F., Farias-Barahona, D., Seehaus, T., Jana, R., Arigony-Neto, J., Gonzalez, I. & Furst, J. J. (2023). Strategies for regional modeling of surface mass balance at the Monte Sarmiento Massif, Tierra del Fuego. The Cryosphere, 17(6), 2343-2365.

Storage

Distribution:
Distribution Media	Online Internet (HTTP)
Distribution Size	364 kB
Distribution Format	ASCII
Fees	N/A

Data Storage:	3 x CSV files