Dryland hydroclimatic response to large tropical volcanic eruptions during the last millennium
Abstract Drylands are highly vulnerable to climate change due to their fragile ecosystems and limited ability to adapt. In contrast to the global drying after tropical volcanic eruptions shown previously, we demonstrate that large tropical volcanic eruptions can induce significant two-year hydroclim...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-04-01
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| Series: | npj Climate and Atmospheric Science |
| Online Access: | https://doi.org/10.1038/s41612-024-00636-y |
| _version_ | 1797219946529292288 |
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| author | Shangrong Zhou Fei Liu Aiguo Dai Tianbao Zhao |
| author_facet | Shangrong Zhou Fei Liu Aiguo Dai Tianbao Zhao |
| author_sort | Shangrong Zhou |
| collection | DOAJ |
| description | Abstract Drylands are highly vulnerable to climate change due to their fragile ecosystems and limited ability to adapt. In contrast to the global drying after tropical volcanic eruptions shown previously, we demonstrate that large tropical volcanic eruptions can induce significant two-year hydroclimatic wetting over drylands by employing the last millennium simulations. During this wetting period, which extends from the first to the third boreal winter after the eruption, several hydroclimatic indicators, such as self-calibrating Palmer Drought Severity Index based on the Penman-Monteith equation for potential evapotranspiration (scPDSIpm), standard precipitation evapotranspiration index (SPEI), aridity index (AI), top-10cm soil moisture (SM10cm), and leaf area index (LAI), show significant positive anomalies over most drylands. The primary contribution to the wetting response is the potential evapotranspiration (PET) reduction resulting from dryland surface cooling and reduced solar radiation, as well as a weak contribution from increased precipitation. The latter is due to the wind convergence into drylands caused by slower tropical cooling compared to drylands. The wetting response of drylands to volcanic eruptions also demonstrates some benefits over the global hydrological slowdown resulting from stratospheric aerosol injection, which replicates the cooling effects of volcanic eruptions to address global warming. |
| first_indexed | 2024-04-24T12:41:43Z |
| format | Article |
| id | doaj.art-9baa0c892010441d9c9789df66f96867 |
| institution | Directory Open Access Journal |
| issn | 2397-3722 |
| language | English |
| last_indexed | 2024-04-24T12:41:43Z |
| publishDate | 2024-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Climate and Atmospheric Science |
| spelling | doaj.art-9baa0c892010441d9c9789df66f968672024-04-07T11:13:06ZengNature Portfolionpj Climate and Atmospheric Science2397-37222024-04-01711910.1038/s41612-024-00636-yDryland hydroclimatic response to large tropical volcanic eruptions during the last millenniumShangrong Zhou0Fei Liu1Aiguo Dai2Tianbao Zhao3School of Atmospheric Sciences Sun Yat-Sen University, Key Laboratory of Tropical Atmosphere-Ocean System Ministry of Education, and Southern Marine Science and Engineering Guangdong LaboratorySchool of Atmospheric Sciences Sun Yat-Sen University, Key Laboratory of Tropical Atmosphere-Ocean System Ministry of Education, and Southern Marine Science and Engineering Guangdong LaboratoryDepartment of Atmospheric and Environmental Sciences, University at Albany, State University of New YorkKey Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences (CAS)Abstract Drylands are highly vulnerable to climate change due to their fragile ecosystems and limited ability to adapt. In contrast to the global drying after tropical volcanic eruptions shown previously, we demonstrate that large tropical volcanic eruptions can induce significant two-year hydroclimatic wetting over drylands by employing the last millennium simulations. During this wetting period, which extends from the first to the third boreal winter after the eruption, several hydroclimatic indicators, such as self-calibrating Palmer Drought Severity Index based on the Penman-Monteith equation for potential evapotranspiration (scPDSIpm), standard precipitation evapotranspiration index (SPEI), aridity index (AI), top-10cm soil moisture (SM10cm), and leaf area index (LAI), show significant positive anomalies over most drylands. The primary contribution to the wetting response is the potential evapotranspiration (PET) reduction resulting from dryland surface cooling and reduced solar radiation, as well as a weak contribution from increased precipitation. The latter is due to the wind convergence into drylands caused by slower tropical cooling compared to drylands. The wetting response of drylands to volcanic eruptions also demonstrates some benefits over the global hydrological slowdown resulting from stratospheric aerosol injection, which replicates the cooling effects of volcanic eruptions to address global warming.https://doi.org/10.1038/s41612-024-00636-y |
| spellingShingle | Shangrong Zhou Fei Liu Aiguo Dai Tianbao Zhao Dryland hydroclimatic response to large tropical volcanic eruptions during the last millennium npj Climate and Atmospheric Science |
| title | Dryland hydroclimatic response to large tropical volcanic eruptions during the last millennium |
| title_full | Dryland hydroclimatic response to large tropical volcanic eruptions during the last millennium |
| title_fullStr | Dryland hydroclimatic response to large tropical volcanic eruptions during the last millennium |
| title_full_unstemmed | Dryland hydroclimatic response to large tropical volcanic eruptions during the last millennium |
| title_short | Dryland hydroclimatic response to large tropical volcanic eruptions during the last millennium |
| title_sort | dryland hydroclimatic response to large tropical volcanic eruptions during the last millennium |
| url | https://doi.org/10.1038/s41612-024-00636-y |
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