A shift towards broader and less persistent Southern Hemisphere temperature anomalies
Abstract Temperature anomalies considerably influence the regional climate and weather of the extratropics. By the end of this century, climate models project an intensification of synoptic temperature variability in the Southern Hemisphere mid-latitudes. This intensification, however, comprises tem...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-11-01
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| Series: | npj Climate and Atmospheric Science |
| Online Access: | https://doi.org/10.1038/s41612-023-00526-9 |
| _version_ | 1797415585997389824 |
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| author | Itamar Karbi Rei Chemke |
| author_facet | Itamar Karbi Rei Chemke |
| author_sort | Itamar Karbi |
| collection | DOAJ |
| description | Abstract Temperature anomalies considerably influence the regional climate and weather of the extratropics. By the end of this century, climate models project an intensification of synoptic temperature variability in the Southern Hemisphere mid-latitudes. This intensification, however, comprises temperature anomalies with various length scales and periods, which might respond differently to anthropogenic emissions. Here, we find a shift, in coming decades, towards spatially larger and less persistent temperature anomalies in the Southern Hemisphere mid-latitudes. A shift towards larger length scales is also found during regional extreme heat events. The shift in length scale and duration is found to stem from changes in the meridional heat flux of atmospheric perturbations. Our results emphasize the importance of investigating the length scale and period-dependent changes in the mid-latitude climate, to prevent masking the different impacts of various length scales and periods, and thus provide more accurate climate projections for the mid-latitudes. |
| first_indexed | 2024-03-09T05:50:52Z |
| format | Article |
| id | doaj.art-01eaac5541cf42dbad602a5ffdcc7fed |
| institution | Directory Open Access Journal |
| issn | 2397-3722 |
| language | English |
| last_indexed | 2024-03-09T05:50:52Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Climate and Atmospheric Science |
| spelling | doaj.art-01eaac5541cf42dbad602a5ffdcc7fed2023-12-03T12:16:57ZengNature Portfolionpj Climate and Atmospheric Science2397-37222023-11-01611710.1038/s41612-023-00526-9A shift towards broader and less persistent Southern Hemisphere temperature anomaliesItamar Karbi0Rei Chemke1Department of Earth and Planetary Sciences, Weizmann Institute of ScienceDepartment of Earth and Planetary Sciences, Weizmann Institute of ScienceAbstract Temperature anomalies considerably influence the regional climate and weather of the extratropics. By the end of this century, climate models project an intensification of synoptic temperature variability in the Southern Hemisphere mid-latitudes. This intensification, however, comprises temperature anomalies with various length scales and periods, which might respond differently to anthropogenic emissions. Here, we find a shift, in coming decades, towards spatially larger and less persistent temperature anomalies in the Southern Hemisphere mid-latitudes. A shift towards larger length scales is also found during regional extreme heat events. The shift in length scale and duration is found to stem from changes in the meridional heat flux of atmospheric perturbations. Our results emphasize the importance of investigating the length scale and period-dependent changes in the mid-latitude climate, to prevent masking the different impacts of various length scales and periods, and thus provide more accurate climate projections for the mid-latitudes.https://doi.org/10.1038/s41612-023-00526-9 |
| spellingShingle | Itamar Karbi Rei Chemke A shift towards broader and less persistent Southern Hemisphere temperature anomalies npj Climate and Atmospheric Science |
| title | A shift towards broader and less persistent Southern Hemisphere temperature anomalies |
| title_full | A shift towards broader and less persistent Southern Hemisphere temperature anomalies |
| title_fullStr | A shift towards broader and less persistent Southern Hemisphere temperature anomalies |
| title_full_unstemmed | A shift towards broader and less persistent Southern Hemisphere temperature anomalies |
| title_short | A shift towards broader and less persistent Southern Hemisphere temperature anomalies |
| title_sort | shift towards broader and less persistent southern hemisphere temperature anomalies |
| url | https://doi.org/10.1038/s41612-023-00526-9 |
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