Temporal stability of a new 40-year daily AVHRR Land Surface Temperature dataset for the Pan-Arctic region
Land surface temperature (LST) gained increased attention in cryospheric research. While various global satellite LST products are available, none of them is specially designed for the Pan-Arctic region. Based on the recently published EUMETSAT Advanced Very High Resolution Radiometer (AVHRR) fundam...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00072782 2024-05-12T07:59:05+00:00 Temporal stability of a new 40-year daily AVHRR Land Surface Temperature dataset for the Pan-Arctic region Dupuis, Sonia Göttsche, Frank-Michael Wunderle, Stefan 2024-04 electronic https://doi.org/10.5194/egusphere-2024-857 https://noa.gwlb.de/receive/cop_mods_00072782 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070978/egusphere-2024-857.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-857/egusphere-2024-857.pdf eng eng Copernicus Publications https://doi.org/10.5194/egusphere-2024-857 https://noa.gwlb.de/receive/cop_mods_00072782 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070978/egusphere-2024-857.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-857/egusphere-2024-857.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/egusphere-2024-857 2024-04-15T23:39:04Z Land surface temperature (LST) gained increased attention in cryospheric research. While various global satellite LST products are available, none of them is specially designed for the Pan-Arctic region. Based on the recently published EUMETSAT Advanced Very High Resolution Radiometer (AVHRR) fundamental data record (FDR), a new LST product (1981–2021) with daily resolution is developed for the Pan-Arctic region. Validation shows good accuracy with an average mean absolute error (MAE) of 1.71 K and a MAE range of 0.62–3.07 K against in situ LST data from the Surface Radiation Budget Network (SURFRAD) and Karlsruhe Institute of Technology (KIT) sites. Long-term stability, a strong requirement for trend analysis, is assessed by comparing LST with air temperatures from ERA5-Land (T2M) and air temperature data from the EUSTACE (www.eustaceproject.org) global station dataset. Long-term stability might not be fulfilled mainly due to the orbit drift of the NOAA satellites. Therefore, the analysis is split into two periods: the arctic winter months, which are unaffected by solar illumination and, therefore, orbital drift, and the summer months. The analysis for the winter months results in correlation values (r) of 0.44–0.83, whereas for the summer months (r) ranges between 0.37–0.84. Analysis of anomaly differences revealed instabilities for the summer months at a few stations. The same stability analysis for the winter months revealed only one station with instabilities in comparison to station air temperature. Discrepancies between the temperature anomalies recorded at the stations and ERA5-Land T2M were also found. This highlights the limited influence of orbital drift on the LST product, with the winter months presenting good stability across all stations, which makes these data a valuable source for studying LST changes in the Pan-Arctic region over the last 40 years. This study concludes by presenting LST trend maps (1981–2021) for the entire region, revealing distinct warming and cooling patterns. Article in Journal/Newspaper Arctic Niedersächsisches Online-Archiv NOA Arctic |
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ftnonlinearchiv |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Dupuis, Sonia Göttsche, Frank-Michael Wunderle, Stefan Temporal stability of a new 40-year daily AVHRR Land Surface Temperature dataset for the Pan-Arctic region |
topic_facet |
article Verlagsveröffentlichung |
description |
Land surface temperature (LST) gained increased attention in cryospheric research. While various global satellite LST products are available, none of them is specially designed for the Pan-Arctic region. Based on the recently published EUMETSAT Advanced Very High Resolution Radiometer (AVHRR) fundamental data record (FDR), a new LST product (1981–2021) with daily resolution is developed for the Pan-Arctic region. Validation shows good accuracy with an average mean absolute error (MAE) of 1.71 K and a MAE range of 0.62–3.07 K against in situ LST data from the Surface Radiation Budget Network (SURFRAD) and Karlsruhe Institute of Technology (KIT) sites. Long-term stability, a strong requirement for trend analysis, is assessed by comparing LST with air temperatures from ERA5-Land (T2M) and air temperature data from the EUSTACE (www.eustaceproject.org) global station dataset. Long-term stability might not be fulfilled mainly due to the orbit drift of the NOAA satellites. Therefore, the analysis is split into two periods: the arctic winter months, which are unaffected by solar illumination and, therefore, orbital drift, and the summer months. The analysis for the winter months results in correlation values (r) of 0.44–0.83, whereas for the summer months (r) ranges between 0.37–0.84. Analysis of anomaly differences revealed instabilities for the summer months at a few stations. The same stability analysis for the winter months revealed only one station with instabilities in comparison to station air temperature. Discrepancies between the temperature anomalies recorded at the stations and ERA5-Land T2M were also found. This highlights the limited influence of orbital drift on the LST product, with the winter months presenting good stability across all stations, which makes these data a valuable source for studying LST changes in the Pan-Arctic region over the last 40 years. This study concludes by presenting LST trend maps (1981–2021) for the entire region, revealing distinct warming and cooling patterns. |
format |
Article in Journal/Newspaper |
author |
Dupuis, Sonia Göttsche, Frank-Michael Wunderle, Stefan |
author_facet |
Dupuis, Sonia Göttsche, Frank-Michael Wunderle, Stefan |
author_sort |
Dupuis, Sonia |
title |
Temporal stability of a new 40-year daily AVHRR Land Surface Temperature dataset for the Pan-Arctic region |
title_short |
Temporal stability of a new 40-year daily AVHRR Land Surface Temperature dataset for the Pan-Arctic region |
title_full |
Temporal stability of a new 40-year daily AVHRR Land Surface Temperature dataset for the Pan-Arctic region |
title_fullStr |
Temporal stability of a new 40-year daily AVHRR Land Surface Temperature dataset for the Pan-Arctic region |
title_full_unstemmed |
Temporal stability of a new 40-year daily AVHRR Land Surface Temperature dataset for the Pan-Arctic region |
title_sort |
temporal stability of a new 40-year daily avhrr land surface temperature dataset for the pan-arctic region |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/egusphere-2024-857 https://noa.gwlb.de/receive/cop_mods_00072782 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070978/egusphere-2024-857.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-857/egusphere-2024-857.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
https://doi.org/10.5194/egusphere-2024-857 https://noa.gwlb.de/receive/cop_mods_00072782 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070978/egusphere-2024-857.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-857/egusphere-2024-857.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-2024-857 |
_version_ |
1798839967974162432 |