Imprints of climate forcings in global gridded temperature data
Monthly near-surface temperature anomalies from several gridded data sets (GISTEMP, Berkeley Earth, MLOST, HadCRUT4, 20th Century Reanalysis) were investigated and compared with regard to the presence of components attributable to external climate forcings (associated with anthropogenic greenhouse g...
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ftcopernicus:oai:publications.copernicus.org:esd48062 2023-05-15T17:34:32+02:00 Imprints of climate forcings in global gridded temperature data Mikšovský, Jiří Holtanová, Eva Pišoft, Petr 2018-09-27 application/pdf https://doi.org/10.5194/esd-7-231-2016 https://esd.copernicus.org/articles/7/231/2016/ eng eng doi:10.5194/esd-7-231-2016 https://esd.copernicus.org/articles/7/231/2016/ eISSN: 2190-4987 Text 2018 ftcopernicus https://doi.org/10.5194/esd-7-231-2016 2020-07-20T16:24:13Z Monthly near-surface temperature anomalies from several gridded data sets (GISTEMP, Berkeley Earth, MLOST, HadCRUT4, 20th Century Reanalysis) were investigated and compared with regard to the presence of components attributable to external climate forcings (associated with anthropogenic greenhouse gases, as well as solar and volcanic activity) and to major internal climate variability modes (El Niño/Southern Oscillation, North Atlantic Oscillation, Atlantic Multidecadal Oscillation, Pacific Decadal Oscillation and variability characterized by the Trans-Polar Index). Multiple linear regression was used to separate components related to individual explanatory variables in local monthly temperatures as well as in their global means, over the 1901–2010 period. Strong correlations of temperature and anthropogenic forcing were confirmed for most of the globe, whereas only weaker and mostly statistically insignificant connections to solar activity were indicated. Imprints of volcanic forcing were found to be largely insignificant in the local temperatures, in contrast to the clear volcanic signature in their global averages. Attention was also paid to the manifestations of short-term time shifts in the responses to the forcings, and to differences in the spatial fingerprints detected from individual temperature data sets. It is shown that although the resemblance of the response patterns is usually strong, some regional contrasts appear. Noteworthy differences from the other data sets were found especially for the 20th Century Reanalysis, particularly for the components attributable to anthropogenic forcing over land, but also in the response to volcanism and in some of the teleconnection patterns related to the internal climate variability modes. Text North Atlantic North Atlantic oscillation Copernicus Publications: E-Journals Pacific Earth System Dynamics 7 1 231 249 |
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Copernicus Publications: E-Journals |
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English |
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Monthly near-surface temperature anomalies from several gridded data sets (GISTEMP, Berkeley Earth, MLOST, HadCRUT4, 20th Century Reanalysis) were investigated and compared with regard to the presence of components attributable to external climate forcings (associated with anthropogenic greenhouse gases, as well as solar and volcanic activity) and to major internal climate variability modes (El Niño/Southern Oscillation, North Atlantic Oscillation, Atlantic Multidecadal Oscillation, Pacific Decadal Oscillation and variability characterized by the Trans-Polar Index). Multiple linear regression was used to separate components related to individual explanatory variables in local monthly temperatures as well as in their global means, over the 1901–2010 period. Strong correlations of temperature and anthropogenic forcing were confirmed for most of the globe, whereas only weaker and mostly statistically insignificant connections to solar activity were indicated. Imprints of volcanic forcing were found to be largely insignificant in the local temperatures, in contrast to the clear volcanic signature in their global averages. Attention was also paid to the manifestations of short-term time shifts in the responses to the forcings, and to differences in the spatial fingerprints detected from individual temperature data sets. It is shown that although the resemblance of the response patterns is usually strong, some regional contrasts appear. Noteworthy differences from the other data sets were found especially for the 20th Century Reanalysis, particularly for the components attributable to anthropogenic forcing over land, but also in the response to volcanism and in some of the teleconnection patterns related to the internal climate variability modes. |
format |
Text |
author |
Mikšovský, Jiří Holtanová, Eva Pišoft, Petr |
spellingShingle |
Mikšovský, Jiří Holtanová, Eva Pišoft, Petr Imprints of climate forcings in global gridded temperature data |
author_facet |
Mikšovský, Jiří Holtanová, Eva Pišoft, Petr |
author_sort |
Mikšovský, Jiří |
title |
Imprints of climate forcings in global gridded temperature data |
title_short |
Imprints of climate forcings in global gridded temperature data |
title_full |
Imprints of climate forcings in global gridded temperature data |
title_fullStr |
Imprints of climate forcings in global gridded temperature data |
title_full_unstemmed |
Imprints of climate forcings in global gridded temperature data |
title_sort |
imprints of climate forcings in global gridded temperature data |
publishDate |
2018 |
url |
https://doi.org/10.5194/esd-7-231-2016 https://esd.copernicus.org/articles/7/231/2016/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
eISSN: 2190-4987 |
op_relation |
doi:10.5194/esd-7-231-2016 https://esd.copernicus.org/articles/7/231/2016/ |
op_doi |
https://doi.org/10.5194/esd-7-231-2016 |
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Earth System Dynamics |
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7 |
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1 |
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231 |
op_container_end_page |
249 |
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1766133403599503360 |