Diurnal temperature range over Europe between 1950 and 2005
International audience It has been widely accepted that diurnal temperature range (DTR) decreased on a global scale during the second half of the twentieth century. Here we show however, that the long-term trend of annual DTR has reversed from a decrease to an increase during the 1970s in Western Eu...
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ftinsu:oai:HAL:hal-00304088v1 2023-11-12T04:19:30+01:00 Diurnal temperature range over Europe between 1950 and 2005 Makowski, K. Wild, M. Ohmura, A. Institute for Atmospheric and Climate Science Zürich (IAC) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) 2008-04-09 https://hal.science/hal-00304088 https://hal.science/hal-00304088/document https://hal.science/hal-00304088/file/acpd-8-7051-2008.pdf en eng HAL CCSD European Geosciences Union hal-00304088 https://hal.science/hal-00304088 https://hal.science/hal-00304088/document https://hal.science/hal-00304088/file/acpd-8-7051-2008.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00304088 Atmospheric Chemistry and Physics Discussions, 2008, 8 (2), pp.7051-7084 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2008 ftinsu 2023-10-25T16:26:12Z International audience It has been widely accepted that diurnal temperature range (DTR) decreased on a global scale during the second half of the twentieth century. Here we show however, that the long-term trend of annual DTR has reversed from a decrease to an increase during the 1970s in Western Europe and during the 1980s in Eastern Europe. The analysis is based on the high-quality dataset of the European Climate Assessment and Dataset Project, from which we selected approximately 200 stations, covering the area from Iceland to Algeria and from Turkey to Russia for 1950 to 2005. We investigate national and regional annual means as well as the pan-European mean with respect to trends and reversal periods. 17 of the 24 investigated regions including the pan-European mean show a statistical significant increase since 1990 at the latest. Of the remaining 7 regions, 2 show a non-significant increase, 3 a significant decrease and the remaining 2 no significant trend. The long-term change in DTR is governed by both surface shortwave and longwave radiation, the former of which has undergone a change from dimming to brightening. Consequently, we discuss the connections between DTR, shortwave radiation and sulfur emissions which are thought to be amongst the most important factors influencing the incoming solar radiation through the primary and secondary aerosol effect. We find reasonable agreement between trends in SO 2 emissions, radiation and DTR in areas affected by high pollution. Consequently, we conclude that the long-term trends in DTR are mostly determined by changes in emissions and the associated changes in incoming solar radiation. Article in Journal/Newspaper Iceland Institut national des sciences de l'Univers: HAL-INSU |
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Institut national des sciences de l'Univers: HAL-INSU |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Makowski, K. Wild, M. Ohmura, A. Diurnal temperature range over Europe between 1950 and 2005 |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience It has been widely accepted that diurnal temperature range (DTR) decreased on a global scale during the second half of the twentieth century. Here we show however, that the long-term trend of annual DTR has reversed from a decrease to an increase during the 1970s in Western Europe and during the 1980s in Eastern Europe. The analysis is based on the high-quality dataset of the European Climate Assessment and Dataset Project, from which we selected approximately 200 stations, covering the area from Iceland to Algeria and from Turkey to Russia for 1950 to 2005. We investigate national and regional annual means as well as the pan-European mean with respect to trends and reversal periods. 17 of the 24 investigated regions including the pan-European mean show a statistical significant increase since 1990 at the latest. Of the remaining 7 regions, 2 show a non-significant increase, 3 a significant decrease and the remaining 2 no significant trend. The long-term change in DTR is governed by both surface shortwave and longwave radiation, the former of which has undergone a change from dimming to brightening. Consequently, we discuss the connections between DTR, shortwave radiation and sulfur emissions which are thought to be amongst the most important factors influencing the incoming solar radiation through the primary and secondary aerosol effect. We find reasonable agreement between trends in SO 2 emissions, radiation and DTR in areas affected by high pollution. Consequently, we conclude that the long-term trends in DTR are mostly determined by changes in emissions and the associated changes in incoming solar radiation. |
author2 |
Institute for Atmospheric and Climate Science Zürich (IAC) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) |
format |
Article in Journal/Newspaper |
author |
Makowski, K. Wild, M. Ohmura, A. |
author_facet |
Makowski, K. Wild, M. Ohmura, A. |
author_sort |
Makowski, K. |
title |
Diurnal temperature range over Europe between 1950 and 2005 |
title_short |
Diurnal temperature range over Europe between 1950 and 2005 |
title_full |
Diurnal temperature range over Europe between 1950 and 2005 |
title_fullStr |
Diurnal temperature range over Europe between 1950 and 2005 |
title_full_unstemmed |
Diurnal temperature range over Europe between 1950 and 2005 |
title_sort |
diurnal temperature range over europe between 1950 and 2005 |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00304088 https://hal.science/hal-00304088/document https://hal.science/hal-00304088/file/acpd-8-7051-2008.pdf |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00304088 Atmospheric Chemistry and Physics Discussions, 2008, 8 (2), pp.7051-7084 |
op_relation |
hal-00304088 https://hal.science/hal-00304088 https://hal.science/hal-00304088/document https://hal.science/hal-00304088/file/acpd-8-7051-2008.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782335906304229376 |