On the possibility of using geothermal data for paleoclimate studies in the Antarctic: the experience from Portugal
The study of the climate in the past and the climate change in mainland Portugal using geothermal data has started in 1996. Reconstruction of ground surface temperature (GST) history from temperature logs measured in a 200 m deep borehole located 5 km away from the town of Évora in Portugal, indicat...
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ftdoajarticles:oai:doaj.org/article:66bb0f02be5d4ca6bdb8a209a6d0eac3 2023-05-15T13:32:18+02:00 On the possibility of using geothermal data for paleoclimate studies in the Antarctic: the experience from Portugal António Correia 2009-06-01T00:00:00Z https://doaj.org/article/66bb0f02be5d4ca6bdb8a209a6d0eac3 EN ES FR PT eng spa fre por CEG http://www.ceg.ul.pt/finisterra/numeros/2009-87/87_09.pdf https://doaj.org/toc/0430-5027 0430-5027 https://doaj.org/article/66bb0f02be5d4ca6bdb8a209a6d0eac3 Finisterra - Revista Portuguesa de Geografia, Vol XLIV, Iss 87, Pp 109-116 (2009) Climate change Borehole temperatures Paleoclimatology Geography. Anthropology. Recreation G article 2009 ftdoajarticles 2022-12-31T09:10:40Z The study of the climate in the past and the climate change in mainland Portugal using geothermal data has started in 1996. Reconstruction of ground surface temperature (GST) history from temperature logs measured in a 200 m deep borehole located 5 km away from the town of Évora in Portugal, indicates a warming of 1K since the second half of the nineteenth century to the middle of the 90s of the twentieth century, increasing considerably in the last 10 years. Results of the reconstruction (based on a functional space inversion – FSI – method) are compared with air temperatures recorded at the Lisbon meteorological station since 1856. The airtemperature time series display a warming trend with the amplitude about 1K for the same period. The coupling of the air and ground temperature changes and their downward propagation by heat conduction was confirmed by repeated logging in November 2003, 6.7 years after obtaining the first temperature log. The method can be used in paleoclimatic studies in Antarctica as well as in areas with permafrost. Article in Journal/Newspaper Antarc* Antarctic Antarctica permafrost Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Spanish French Portuguese |
topic |
Climate change Borehole temperatures Paleoclimatology Geography. Anthropology. Recreation G |
spellingShingle |
Climate change Borehole temperatures Paleoclimatology Geography. Anthropology. Recreation G António Correia On the possibility of using geothermal data for paleoclimate studies in the Antarctic: the experience from Portugal |
topic_facet |
Climate change Borehole temperatures Paleoclimatology Geography. Anthropology. Recreation G |
description |
The study of the climate in the past and the climate change in mainland Portugal using geothermal data has started in 1996. Reconstruction of ground surface temperature (GST) history from temperature logs measured in a 200 m deep borehole located 5 km away from the town of Évora in Portugal, indicates a warming of 1K since the second half of the nineteenth century to the middle of the 90s of the twentieth century, increasing considerably in the last 10 years. Results of the reconstruction (based on a functional space inversion – FSI – method) are compared with air temperatures recorded at the Lisbon meteorological station since 1856. The airtemperature time series display a warming trend with the amplitude about 1K for the same period. The coupling of the air and ground temperature changes and their downward propagation by heat conduction was confirmed by repeated logging in November 2003, 6.7 years after obtaining the first temperature log. The method can be used in paleoclimatic studies in Antarctica as well as in areas with permafrost. |
format |
Article in Journal/Newspaper |
author |
António Correia |
author_facet |
António Correia |
author_sort |
António Correia |
title |
On the possibility of using geothermal data for paleoclimate studies in the Antarctic: the experience from Portugal |
title_short |
On the possibility of using geothermal data for paleoclimate studies in the Antarctic: the experience from Portugal |
title_full |
On the possibility of using geothermal data for paleoclimate studies in the Antarctic: the experience from Portugal |
title_fullStr |
On the possibility of using geothermal data for paleoclimate studies in the Antarctic: the experience from Portugal |
title_full_unstemmed |
On the possibility of using geothermal data for paleoclimate studies in the Antarctic: the experience from Portugal |
title_sort |
on the possibility of using geothermal data for paleoclimate studies in the antarctic: the experience from portugal |
publisher |
CEG |
publishDate |
2009 |
url |
https://doaj.org/article/66bb0f02be5d4ca6bdb8a209a6d0eac3 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica permafrost |
genre_facet |
Antarc* Antarctic Antarctica permafrost |
op_source |
Finisterra - Revista Portuguesa de Geografia, Vol XLIV, Iss 87, Pp 109-116 (2009) |
op_relation |
http://www.ceg.ul.pt/finisterra/numeros/2009-87/87_09.pdf https://doaj.org/toc/0430-5027 0430-5027 https://doaj.org/article/66bb0f02be5d4ca6bdb8a209a6d0eac3 |
_version_ |
1766025715651706880 |