On the possibility of using geothermal data for paleoclimate studies in Antarctica: 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...
Main Author: | |
---|---|
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Centro de Estudos Geográficos
2009
|
Subjects: | |
Online Access: | http://hdl.handle.net/10174/6569 |
id |
ftunivevora:oai:dspace.uevora.pt:10174/6569 |
---|---|
record_format |
openpolar |
spelling |
ftunivevora:oai:dspace.uevora.pt:10174/6569 2023-09-05T13:13:38+02:00 On the possibility of using geothermal data for paleoclimate studies in Antarctica: the experience from Portugal Correia, Antonio Vieira, Gonçalo Mora, Carla 2009 http://hdl.handle.net/10174/6569 eng eng Centro de Estudos Geográficos 109-116 0430-5027 http://hdl.handle.net/10174/6569 XLIV Finisterra 87 correia@uevora.pt 399 openAccess Climate change Borehole temperatures Paleoclimatology article 2009 ftunivevora 2023-08-14T17:30:10Z 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 air temperature 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* Antarctica permafrost Repositório Científico da Universidade de Évora |
institution |
Open Polar |
collection |
Repositório Científico da Universidade de Évora |
op_collection_id |
ftunivevora |
language |
English |
topic |
Climate change Borehole temperatures Paleoclimatology |
spellingShingle |
Climate change Borehole temperatures Paleoclimatology Correia, Antonio On the possibility of using geothermal data for paleoclimate studies in Antarctica: the experience from Portugal |
topic_facet |
Climate change Borehole temperatures Paleoclimatology |
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 air temperature 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. |
author2 |
Vieira, Gonçalo Mora, Carla |
format |
Article in Journal/Newspaper |
author |
Correia, Antonio |
author_facet |
Correia, Antonio |
author_sort |
Correia, Antonio |
title |
On the possibility of using geothermal data for paleoclimate studies in Antarctica: the experience from Portugal |
title_short |
On the possibility of using geothermal data for paleoclimate studies in Antarctica: the experience from Portugal |
title_full |
On the possibility of using geothermal data for paleoclimate studies in Antarctica: the experience from Portugal |
title_fullStr |
On the possibility of using geothermal data for paleoclimate studies in Antarctica: the experience from Portugal |
title_full_unstemmed |
On the possibility of using geothermal data for paleoclimate studies in Antarctica: the experience from Portugal |
title_sort |
on the possibility of using geothermal data for paleoclimate studies in antarctica: the experience from portugal |
publisher |
Centro de Estudos Geográficos |
publishDate |
2009 |
url |
http://hdl.handle.net/10174/6569 |
genre |
Antarc* Antarctica permafrost |
genre_facet |
Antarc* Antarctica permafrost |
op_relation |
109-116 0430-5027 http://hdl.handle.net/10174/6569 XLIV Finisterra 87 correia@uevora.pt 399 |
op_rights |
openAccess |
_version_ |
1776204842769842176 |