An Assessment of ERA5 Reanalysis for Antarctic Near-Surface Air Temperature
The European Center for Medium-Range Weather Forecasts (ECMWF) released its latest reanalysis dataset named ERA5 in 2017. To assess the performance of ERA5 in Antarctica, we compare the near-surface temperature data from ERA5 and ERA-Interim with the measured data from 41 weather stations. ERA5 has...
Published in: | Atmosphere |
---|---|
Main Authors: | , , , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2021
|
Subjects: | |
Online Access: | https://doi.org/10.3390/atmos12020217 |
id |
ftmdpi:oai:mdpi.com:/2073-4433/12/2/217/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2073-4433/12/2/217/ 2023-08-20T04:01:03+02:00 An Assessment of ERA5 Reanalysis for Antarctic Near-Surface Air Temperature Jiangping Zhu Aihong Xie Xiang Qin Yetang Wang Bing Xu Yicheng Wang agris 2021-02-05 application/pdf https://doi.org/10.3390/atmos12020217 EN eng Multidisciplinary Digital Publishing Institute Climatology https://dx.doi.org/10.3390/atmos12020217 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 12; Issue 2; Pages: 217 ERA5 ERA-Interim Antarctica air temperature in situ observations Text 2021 ftmdpi https://doi.org/10.3390/atmos12020217 2023-08-01T01:01:01Z The European Center for Medium-Range Weather Forecasts (ECMWF) released its latest reanalysis dataset named ERA5 in 2017. To assess the performance of ERA5 in Antarctica, we compare the near-surface temperature data from ERA5 and ERA-Interim with the measured data from 41 weather stations. ERA5 has a strong linear relationship with monthly observations, and the statistical significant correlation coefficients (p < 0.05) are higher than 0.95 at all stations selected. The performance of ERA5 shows regional differences, and the correlations are high in West Antarctica and low in East Antarctica. Compared with ERA5, ERA-Interim has a slightly higher linear relationship with observations in the Antarctic Peninsula. ERA5 agrees well with the temperature observations in austral spring, with significant correlation coefficients higher than 0.90 and bias lower than 0.70 °C. The temperature trend from ERA5 is consistent with that from observations, in which a cooling trend dominates East Antarctica and West Antarctica, while a warming trend exists in the Antarctic Peninsula except during austral summer. Generally, ERA5 can effectively represent the temperature changes in Antarctica and its three subregions. Although ERA5 has bias, ERA5 can play an important role as a powerful tool to explore the climate change in Antarctica with sparse in situ observations. Text Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica West Antarctica MDPI Open Access Publishing Antarctic Antarctic Peninsula Austral East Antarctica The Antarctic West Antarctica Atmosphere 12 2 217 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
ERA5 ERA-Interim Antarctica air temperature in situ observations |
spellingShingle |
ERA5 ERA-Interim Antarctica air temperature in situ observations Jiangping Zhu Aihong Xie Xiang Qin Yetang Wang Bing Xu Yicheng Wang An Assessment of ERA5 Reanalysis for Antarctic Near-Surface Air Temperature |
topic_facet |
ERA5 ERA-Interim Antarctica air temperature in situ observations |
description |
The European Center for Medium-Range Weather Forecasts (ECMWF) released its latest reanalysis dataset named ERA5 in 2017. To assess the performance of ERA5 in Antarctica, we compare the near-surface temperature data from ERA5 and ERA-Interim with the measured data from 41 weather stations. ERA5 has a strong linear relationship with monthly observations, and the statistical significant correlation coefficients (p < 0.05) are higher than 0.95 at all stations selected. The performance of ERA5 shows regional differences, and the correlations are high in West Antarctica and low in East Antarctica. Compared with ERA5, ERA-Interim has a slightly higher linear relationship with observations in the Antarctic Peninsula. ERA5 agrees well with the temperature observations in austral spring, with significant correlation coefficients higher than 0.90 and bias lower than 0.70 °C. The temperature trend from ERA5 is consistent with that from observations, in which a cooling trend dominates East Antarctica and West Antarctica, while a warming trend exists in the Antarctic Peninsula except during austral summer. Generally, ERA5 can effectively represent the temperature changes in Antarctica and its three subregions. Although ERA5 has bias, ERA5 can play an important role as a powerful tool to explore the climate change in Antarctica with sparse in situ observations. |
format |
Text |
author |
Jiangping Zhu Aihong Xie Xiang Qin Yetang Wang Bing Xu Yicheng Wang |
author_facet |
Jiangping Zhu Aihong Xie Xiang Qin Yetang Wang Bing Xu Yicheng Wang |
author_sort |
Jiangping Zhu |
title |
An Assessment of ERA5 Reanalysis for Antarctic Near-Surface Air Temperature |
title_short |
An Assessment of ERA5 Reanalysis for Antarctic Near-Surface Air Temperature |
title_full |
An Assessment of ERA5 Reanalysis for Antarctic Near-Surface Air Temperature |
title_fullStr |
An Assessment of ERA5 Reanalysis for Antarctic Near-Surface Air Temperature |
title_full_unstemmed |
An Assessment of ERA5 Reanalysis for Antarctic Near-Surface Air Temperature |
title_sort |
assessment of era5 reanalysis for antarctic near-surface air temperature |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/atmos12020217 |
op_coverage |
agris |
geographic |
Antarctic Antarctic Peninsula Austral East Antarctica The Antarctic West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula Austral East Antarctica The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica West Antarctica |
op_source |
Atmosphere; Volume 12; Issue 2; Pages: 217 |
op_relation |
Climatology https://dx.doi.org/10.3390/atmos12020217 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/atmos12020217 |
container_title |
Atmosphere |
container_volume |
12 |
container_issue |
2 |
container_start_page |
217 |
_version_ |
1774722347967709184 |