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DOI | 10.1175/JCLI-D-17-0703.1 |
The Climate Response to Multiple Volcanic Eruptions Mediated by Ocean Heat Uptake: Damping Processes and Accumulation Potential | |
Gupta, Mukund; Marshall, John | |
2018-11-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:21页码:8669-8687 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A hierarchy of models is used to explore the role of the ocean in mediating the response of the climate to a single volcanic eruption and to a series of eruptions by drawing cold temperature anomalies into its interior, as measured by the ocean heat exchange parameter q (W m(-2) K-1). The response to a single (Pinatubo-like) eruption comprises two primary time scales: one fast (year) and one slow (decadal). Over the fast time scale, the ocean sequesters cooling anomalies induced by the eruption into its depth, enhancing the damping rate of sea surface temperature (SST) relative to that which would be expected if the atmosphere acted alone. This compromises the ability to constrain atmospheric feedback rates measured by lambda (similar to 1 W m(-2) K-1 ) from study of the relaxation of SST back toward equilibrium, but yields information about the transient climate sensitivity proportional to lambda + q. Our study suggests that q can significantly exceed A in the immediate aftermath of an eruption. Shielded from damping to the atmosphere, the effect of the volcanic eruption persists on longer decadal time scales. We contrast the response to an "impulse" from that of a "step" in which the forcing is kept constant in time. Finally, we assess the "accumulation potential" of a succession of volcanic eruptions over time, a process that may in part explain the prolongation of cold surface temperatures experienced during, for example, the Little Ice Age. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445204500001 |
WOS关键词 | GENERAL-CIRCULATION MODEL ; HEMISPHERIC TEMPERATURE ; MOUNT-PINATUBO ; SENSITIVITY ; IMPACT ; SIMULATIONS ; VARIABILITY ; MILLENNIUM ; SCALE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21234 |
专题 | 气候变化 |
作者单位 | MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA |
推荐引用方式 GB/T 7714 | Gupta, Mukund,Marshall, John. The Climate Response to Multiple Volcanic Eruptions Mediated by Ocean Heat Uptake: Damping Processes and Accumulation Potential[J]. JOURNAL OF CLIMATE,2018,31(21):8669-8687. |
APA | Gupta, Mukund,&Marshall, John.(2018).The Climate Response to Multiple Volcanic Eruptions Mediated by Ocean Heat Uptake: Damping Processes and Accumulation Potential.JOURNAL OF CLIMATE,31(21),8669-8687. |
MLA | Gupta, Mukund,et al."The Climate Response to Multiple Volcanic Eruptions Mediated by Ocean Heat Uptake: Damping Processes and Accumulation Potential".JOURNAL OF CLIMATE 31.21(2018):8669-8687. |
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