Spatiotemporal Reconstruction of Antarctic Near-Surface Air Temperature from MODIS Observations
MODIS (Moderate Resolution Imaging Spectroradiometer) land surface temperature measurements in combination with in situ air temperature records from 119 meteorological stations are used to reconstruct a monthly near-surface air temperature product over the Antarctic Ice Sheet (AIS) by means of a neu...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/422923 2023-07-23T04:15:19+02:00 Spatiotemporal Reconstruction of Antarctic Near-Surface Air Temperature from MODIS Observations Zhang, X. Dong, X. Zeng, J. Hou, S. Smeets, Paul Reijmer, Carleen Wang, Y. Sub Dynamics Meteorology Marine and Atmospheric Research 2022-09-01 application/pdf https://dspace.library.uu.nl/handle/1874/422923 en eng 0894-8755 https://dspace.library.uu.nl/handle/1874/422923 info:eu-repo/semantics/ClosedAccess Antarctica Atmosphere Neural networks Atmospheric Science Article 2022 ftunivutrecht 2023-07-02T03:45:41Z MODIS (Moderate Resolution Imaging Spectroradiometer) land surface temperature measurements in combination with in situ air temperature records from 119 meteorological stations are used to reconstruct a monthly near-surface air temperature product over the Antarctic Ice Sheet (AIS) by means of a neural network model. The product is generated on a regular grid of 0.05° × 0.05°, spanning from 2001 to 2018. Comparison with independent in situ air temperature measurements shows low uncertainty, with a mean bias of 0.09°C, a mean absolute error of 2.23°C, and a correlation coefficient of 97%. Furthermore, the performance of the reconstruction is better than ERA5 (the fifth-generation ECMWF reanalysis model) against in situ measurements. For the 2001–18 period, the MODIS-based near-surface air temperature product yields annual warming in the East Antarctica, but cooling in the Antarctic Peninsula and West Antarctica. However, they are not statistically significant. This product can also be used to investigate the impact of the Southern Hemisphere annual mode (SAM) on year-to-year variability of air temperature. The enhanced positive phase of SAM in recent decades in austral summer has a cooling effect on East and West Antarctica. In addition, the dataset has the potential application for climate model validation and data assimilation due to the independence of the input of a numerical weather prediction model. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica Utrecht University Repository Antarctic Antarctic Peninsula Austral East Antarctica The Antarctic West Antarctica |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Antarctica Atmosphere Neural networks Atmospheric Science |
spellingShingle |
Antarctica Atmosphere Neural networks Atmospheric Science Zhang, X. Dong, X. Zeng, J. Hou, S. Smeets, Paul Reijmer, Carleen Wang, Y. Spatiotemporal Reconstruction of Antarctic Near-Surface Air Temperature from MODIS Observations |
topic_facet |
Antarctica Atmosphere Neural networks Atmospheric Science |
description |
MODIS (Moderate Resolution Imaging Spectroradiometer) land surface temperature measurements in combination with in situ air temperature records from 119 meteorological stations are used to reconstruct a monthly near-surface air temperature product over the Antarctic Ice Sheet (AIS) by means of a neural network model. The product is generated on a regular grid of 0.05° × 0.05°, spanning from 2001 to 2018. Comparison with independent in situ air temperature measurements shows low uncertainty, with a mean bias of 0.09°C, a mean absolute error of 2.23°C, and a correlation coefficient of 97%. Furthermore, the performance of the reconstruction is better than ERA5 (the fifth-generation ECMWF reanalysis model) against in situ measurements. For the 2001–18 period, the MODIS-based near-surface air temperature product yields annual warming in the East Antarctica, but cooling in the Antarctic Peninsula and West Antarctica. However, they are not statistically significant. This product can also be used to investigate the impact of the Southern Hemisphere annual mode (SAM) on year-to-year variability of air temperature. The enhanced positive phase of SAM in recent decades in austral summer has a cooling effect on East and West Antarctica. In addition, the dataset has the potential application for climate model validation and data assimilation due to the independence of the input of a numerical weather prediction model. |
author2 |
Sub Dynamics Meteorology Marine and Atmospheric Research |
format |
Article in Journal/Newspaper |
author |
Zhang, X. Dong, X. Zeng, J. Hou, S. Smeets, Paul Reijmer, Carleen Wang, Y. |
author_facet |
Zhang, X. Dong, X. Zeng, J. Hou, S. Smeets, Paul Reijmer, Carleen Wang, Y. |
author_sort |
Zhang, X. |
title |
Spatiotemporal Reconstruction of Antarctic Near-Surface Air Temperature from MODIS Observations |
title_short |
Spatiotemporal Reconstruction of Antarctic Near-Surface Air Temperature from MODIS Observations |
title_full |
Spatiotemporal Reconstruction of Antarctic Near-Surface Air Temperature from MODIS Observations |
title_fullStr |
Spatiotemporal Reconstruction of Antarctic Near-Surface Air Temperature from MODIS Observations |
title_full_unstemmed |
Spatiotemporal Reconstruction of Antarctic Near-Surface Air Temperature from MODIS Observations |
title_sort |
spatiotemporal reconstruction of antarctic near-surface air temperature from modis observations |
publishDate |
2022 |
url |
https://dspace.library.uu.nl/handle/1874/422923 |
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 Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica |
op_relation |
0894-8755 https://dspace.library.uu.nl/handle/1874/422923 |
op_rights |
info:eu-repo/semantics/ClosedAccess |
_version_ |
1772189324475891712 |