A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies
Climate reanalyses provide key information to calibrate proxy records in regions with scarce direct observations. The climate reanalysis used to perform a proxy calibration should accurately reproduce the local climate variability. Here we present a regional scale evaluation of meteorological parame...
Published in: | Geosciences |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/523367/ https://nora.nerc.ac.uk/id/eprint/523367/1/geosciences-09-00289.pdf https://www.mdpi.com/2076-3263/9/7/289 |
id |
ftnerc:oai:nora.nerc.ac.uk:523367 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:523367 2023-05-15T13:41:43+02:00 A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies Tetzner, Dieter Thomas, Liz Allen, Claire 2019-06-29 text http://nora.nerc.ac.uk/id/eprint/523367/ https://nora.nerc.ac.uk/id/eprint/523367/1/geosciences-09-00289.pdf https://www.mdpi.com/2076-3263/9/7/289 en eng https://nora.nerc.ac.uk/id/eprint/523367/1/geosciences-09-00289.pdf Tetzner, Dieter orcid:0000-0001-7659-8799 Thomas, Liz orcid:0000-0002-3010-6493 Allen, Claire orcid:0000-0002-0938-0551 . 2019 A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies. Geosciences, 9 (7), 289. https://doi.org/10.3390/geosciences9070289 <https://doi.org/10.3390/geosciences9070289> cc_by_4 CC-BY Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.3390/geosciences9070289 2023-02-04T19:48:22Z Climate reanalyses provide key information to calibrate proxy records in regions with scarce direct observations. The climate reanalysis used to perform a proxy calibration should accurately reproduce the local climate variability. Here we present a regional scale evaluation of meteorological parameters using ERA-Interim and ERA5 reanalyses compared to in-situ observations from 13 automatic weather stations (AWS), located in the southern Antarctic Peninsula and Ellsworth Land, Antarctica. Both reanalyses seem to perform better in the escarpment area (>1000 m a.s.l) than on the coast. A significant improvement is observed in the performance of ERA5 over ERA-Interim. ERA5 is highly accurate, representing the magnitude and variability of near-surface air temperature and wind regimes. The higher spatial and temporal resolution provided by ERA5 reduces significantly the cold coastal biases identified in ERA-Interim and increases the accuracy representing the wind direction and wind speed in the escarpment. The slight underestimation in the wind speed obtained from the reanalyses could be attributed to an interplay of topographic factors and the effect of local wind regimes. Three sites in this region are highlighted for their potential for ice core studies. These sites are likely to provide accurate proxy calibrations for future palaeoclimatic reconstructions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica ice core Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Ellsworth Land ENVELOPE(-85.000,-85.000,-75.000,-75.000) Geosciences 9 7 289 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Climate reanalyses provide key information to calibrate proxy records in regions with scarce direct observations. The climate reanalysis used to perform a proxy calibration should accurately reproduce the local climate variability. Here we present a regional scale evaluation of meteorological parameters using ERA-Interim and ERA5 reanalyses compared to in-situ observations from 13 automatic weather stations (AWS), located in the southern Antarctic Peninsula and Ellsworth Land, Antarctica. Both reanalyses seem to perform better in the escarpment area (>1000 m a.s.l) than on the coast. A significant improvement is observed in the performance of ERA5 over ERA-Interim. ERA5 is highly accurate, representing the magnitude and variability of near-surface air temperature and wind regimes. The higher spatial and temporal resolution provided by ERA5 reduces significantly the cold coastal biases identified in ERA-Interim and increases the accuracy representing the wind direction and wind speed in the escarpment. The slight underestimation in the wind speed obtained from the reanalyses could be attributed to an interplay of topographic factors and the effect of local wind regimes. Three sites in this region are highlighted for their potential for ice core studies. These sites are likely to provide accurate proxy calibrations for future palaeoclimatic reconstructions. |
format |
Article in Journal/Newspaper |
author |
Tetzner, Dieter Thomas, Liz Allen, Claire |
spellingShingle |
Tetzner, Dieter Thomas, Liz Allen, Claire A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies |
author_facet |
Tetzner, Dieter Thomas, Liz Allen, Claire |
author_sort |
Tetzner, Dieter |
title |
A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies |
title_short |
A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies |
title_full |
A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies |
title_fullStr |
A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies |
title_full_unstemmed |
A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies |
title_sort |
validation of era5 reanalysis data in the southern antarctic peninsula – ellsworth land region, and its implications for ice core studies |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/523367/ https://nora.nerc.ac.uk/id/eprint/523367/1/geosciences-09-00289.pdf https://www.mdpi.com/2076-3263/9/7/289 |
long_lat |
ENVELOPE(-85.000,-85.000,-75.000,-75.000) |
geographic |
Antarctic Antarctic Peninsula Ellsworth Land |
geographic_facet |
Antarctic Antarctic Peninsula Ellsworth Land |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica ice core |
op_relation |
https://nora.nerc.ac.uk/id/eprint/523367/1/geosciences-09-00289.pdf Tetzner, Dieter orcid:0000-0001-7659-8799 Thomas, Liz orcid:0000-0002-3010-6493 Allen, Claire orcid:0000-0002-0938-0551 . 2019 A validation of ERA5 reanalysis data in the southern Antarctic Peninsula – Ellsworth Land region, and its implications for ice core studies. Geosciences, 9 (7), 289. https://doi.org/10.3390/geosciences9070289 <https://doi.org/10.3390/geosciences9070289> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/geosciences9070289 |
container_title |
Geosciences |
container_volume |
9 |
container_issue |
7 |
container_start_page |
289 |
_version_ |
1766154927088861184 |