Recent trends in climate variability at the local scale using 40 years of observations: the case of the Paris region of France
<p>For several years, global warming has been unequivocal, leading to climate change at global, regional and local scales. A good understanding of climate characteristics and local variability is important for adaptation and response. Indeed, the contribution of local processes and their under...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2019-10-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/19/13129/2019/acp-19-13129-2019.pdf |
| _version_ | 1818061106708480000 |
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| author | J. Ringard M. Chiriaco S. Bastin F. Habets F. Habets |
| author_facet | J. Ringard M. Chiriaco S. Bastin F. Habets F. Habets |
| author_sort | J. Ringard |
| collection | DOAJ |
| description | <p>For several years, global warming has been unequivocal,
leading to climate change at global, regional and local scales. A good
understanding of climate characteristics and local variability is important
for adaptation and response. Indeed, the contribution of local processes and
their understanding in the context of warming are still very little studied
and poorly represented in climate models. Improving the knowledge of
surface–atmosphere feedback effects at local scales is therefore important
for future projections. Using observed data in the Paris region from 1979 to 2017,
this study characterizes the changes observed over the last 40 years
for six climatic parameters (e.g. mean, maximum and minimum air temperature
at 2 m, 2 m relative and specific humidities and precipitation) at
the annual and seasonal scales and in summer, regardless of large-scale
circulation, with an attribution of which part of the change is linked to
large-scale circulation or thermodynamic. The results show that some trends
differ from the ones observed at the regional or global scale. Indeed, in
the Paris region, the maximum temperature increases faster than does the
minimum temperature. The most significant trends are observed in spring and
in summer, with a strong increase in temperature and a very strong decrease
in relative humidity, while specific humidity and precipitation show no
significant trends. The summer trends can be explained more precisely using
large-scale circulation, especially regarding the evolution of the
precipitation and specific humidity. The analysis indicates the important
role of surface–atmosphere feedback in local variability and that this
feedback is amplified or inhibited in a context of global warming,
especially in an urban environment.</p> |
| first_indexed | 2024-12-10T13:43:03Z |
| format | Article |
| id | doaj.art-0b2c054632f744d0b4a0a9690a6bc246 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-10T13:43:03Z |
| publishDate | 2019-10-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-0b2c054632f744d0b4a0a9690a6bc2462022-12-22T01:46:36ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242019-10-0119131291315510.5194/acp-19-13129-2019Recent trends in climate variability at the local scale using 40 years of observations: the case of the Paris region of FranceJ. Ringard0M. Chiriaco1S. Bastin2F. Habets3F. Habets4LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, 11 bd d'Alembert, Guyancourt, FranceLATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, 11 bd d'Alembert, Guyancourt, FranceLATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, 11 bd d'Alembert, Guyancourt, FranceMETIS/IPSL, Sorbonne Université, CNRS, 4 place Jussieu, Paris, FranceLaboratoire de Géologie, Ecole normale supérieure, PSL Research University, CNRS UMR 8538, 24 rue Lhomond, Paris, France<p>For several years, global warming has been unequivocal, leading to climate change at global, regional and local scales. A good understanding of climate characteristics and local variability is important for adaptation and response. Indeed, the contribution of local processes and their understanding in the context of warming are still very little studied and poorly represented in climate models. Improving the knowledge of surface–atmosphere feedback effects at local scales is therefore important for future projections. Using observed data in the Paris region from 1979 to 2017, this study characterizes the changes observed over the last 40 years for six climatic parameters (e.g. mean, maximum and minimum air temperature at 2 m, 2 m relative and specific humidities and precipitation) at the annual and seasonal scales and in summer, regardless of large-scale circulation, with an attribution of which part of the change is linked to large-scale circulation or thermodynamic. The results show that some trends differ from the ones observed at the regional or global scale. Indeed, in the Paris region, the maximum temperature increases faster than does the minimum temperature. The most significant trends are observed in spring and in summer, with a strong increase in temperature and a very strong decrease in relative humidity, while specific humidity and precipitation show no significant trends. The summer trends can be explained more precisely using large-scale circulation, especially regarding the evolution of the precipitation and specific humidity. The analysis indicates the important role of surface–atmosphere feedback in local variability and that this feedback is amplified or inhibited in a context of global warming, especially in an urban environment.</p>https://www.atmos-chem-phys.net/19/13129/2019/acp-19-13129-2019.pdf |
| spellingShingle | J. Ringard M. Chiriaco S. Bastin F. Habets F. Habets Recent trends in climate variability at the local scale using 40 years of observations: the case of the Paris region of France Atmospheric Chemistry and Physics |
| title | Recent trends in climate variability at the local scale using 40 years of observations: the case of the Paris region of France |
| title_full | Recent trends in climate variability at the local scale using 40 years of observations: the case of the Paris region of France |
| title_fullStr | Recent trends in climate variability at the local scale using 40 years of observations: the case of the Paris region of France |
| title_full_unstemmed | Recent trends in climate variability at the local scale using 40 years of observations: the case of the Paris region of France |
| title_short | Recent trends in climate variability at the local scale using 40 years of observations: the case of the Paris region of France |
| title_sort | recent trends in climate variability at the local scale using 40 years of observations the case of the paris region of france |
| url | https://www.atmos-chem-phys.net/19/13129/2019/acp-19-13129-2019.pdf |
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