GSTDTAP  > 气候变化
DOI10.1175/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
ISSN0894-8755
EISSN1520-0442
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
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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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