Recent global temperature surge amplified by record-low planetary albedo
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913370525925376 |
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| author | Goessling, Helge F. Rackow, Thomas Jung, Thomas |
| author_facet | Goessling, Helge F. Rackow, Thomas Jung, Thomas |
| contents | In 2023, the global mean temperature soared to 1.48K above the pre-industrial level, surpassing the previous record by 0.17K. Previous best-guess estimates of known drivers including anthropogenic warming and the El Nino onset fall short by about 0.2K in explaining the temperature rise. Utilizing satellite and reanalysis data, we identify a record-low planetary albedo as the primary factor bridging this gap. The decline is caused largely by a reduced low-cloud cover in the northern mid-latitudes and tropics, in continuation of a multi-annual trend. Understanding how much of the low-cloud trend is due to internal variability, reduced aerosol concentrations, or a possibly emerging low-cloud feedback will be crucial for assessing the current and expected future warming. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_19986 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Recent global temperature surge amplified by record-low planetary albedo Goessling, Helge F. Rackow, Thomas Jung, Thomas Atmospheric and Oceanic Physics In 2023, the global mean temperature soared to 1.48K above the pre-industrial level, surpassing the previous record by 0.17K. Previous best-guess estimates of known drivers including anthropogenic warming and the El Nino onset fall short by about 0.2K in explaining the temperature rise. Utilizing satellite and reanalysis data, we identify a record-low planetary albedo as the primary factor bridging this gap. The decline is caused largely by a reduced low-cloud cover in the northern mid-latitudes and tropics, in continuation of a multi-annual trend. Understanding how much of the low-cloud trend is due to internal variability, reduced aerosol concentrations, or a possibly emerging low-cloud feedback will be crucial for assessing the current and expected future warming. |
| title | Recent global temperature surge amplified by record-low planetary albedo |
| topic | Atmospheric and Oceanic Physics |
| url | https://arxiv.org/abs/2405.19986 |