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...
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ftmdpi:oai:mdpi.com:/2076-3263/9/7/289/ 2023-08-20T04:01:11+02:00 A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies Dieter Tetzner Elizabeth Thomas Claire Allen agris 2019-06-29 application/pdf https://doi.org/10.3390/geosciences9070289 EN eng Multidisciplinary Digital Publishing Institute Geophysics https://dx.doi.org/10.3390/geosciences9070289 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 9; Issue 7; Pages: 289 climate reanalysis ERA5 ERA-Interim Antarctic Peninsula ice cores Antarctica winds Text 2019 ftmdpi https://doi.org/10.3390/geosciences9070289 2023-07-31T22:23:55Z 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. Text Antarc* Antarctic Antarctic Peninsula Antarctica ice core MDPI Open Access Publishing Antarctic Antarctic Peninsula Ellsworth Land ENVELOPE(-85.000,-85.000,-75.000,-75.000) Geosciences 9 7 289 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
climate reanalysis ERA5 ERA-Interim Antarctic Peninsula ice cores Antarctica winds |
spellingShingle |
climate reanalysis ERA5 ERA-Interim Antarctic Peninsula ice cores Antarctica winds Dieter Tetzner Elizabeth Thomas Claire Allen A Validation of ERA5 Reanalysis Data in the Southern Antarctic Peninsula—Ellsworth Land Region, and Its Implications for Ice Core Studies |
topic_facet |
climate reanalysis ERA5 ERA-Interim Antarctic Peninsula ice cores Antarctica winds |
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 |
Text |
author |
Dieter Tetzner Elizabeth Thomas Claire Allen |
author_facet |
Dieter Tetzner Elizabeth Thomas Claire Allen |
author_sort |
Dieter Tetzner |
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 |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2019 |
url |
https://doi.org/10.3390/geosciences9070289 |
op_coverage |
agris |
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_source |
Geosciences; Volume 9; Issue 7; Pages: 289 |
op_relation |
Geophysics https://dx.doi.org/10.3390/geosciences9070289 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences9070289 |
container_title |
Geosciences |
container_volume |
9 |
container_issue |
7 |
container_start_page |
289 |
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1774723279616999424 |