Seasonal Injection Strategies for Stratospheric Aerosol Geoengineering
Seasonal Injection Strategies for Stratospheric Aerosol Geoengineering
复制标题
平流层气溶胶地球工程季节性注入策略
DOI:
10.1029/2019gl083680
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发表时间:
2019
影响因子:
5.2
通讯作者:
Boudreau, Matthew P.
中科院分区:
文献类型:
--
作者:
Visioni, Daniele;MacMartin, Douglas G.;Kravitz, Ben;Tilmes, Simone;Mills, Michael J.;Richter, Jadwiga H.;Boudreau, Matthew P.
Simulations of stratospheric aerosol geoengineering have typically considered injections at a constant rate over the entire year. However, the seasonal variability of both sunlight and the stratospheric circulation suggests seasonally dependent injection strategies. We simulated single‐point injections of the same amount of SO2in each of the four seasons and at five different latitudes (30°S, 15°S, equator, 15°N, and 30°N), 5 km above the tropopause. Our findings suggest that injecting only during one season reduces the amount of SO2needed to achieve a certain aerosol optical depth, thus potentially reducing some of the side effects of geoengineering. We find, in particular, that injections at 15°N or 15°S in spring of the corresponding hemisphere results in the largest reductions in incoming solar radiation. Compared to annual injections, by injecting in the different seasons we identify additional distinct spatiotemporal aerosol optical depth patterns, thanks to seasonal differences in the stratospheric circulation.
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DOI:
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发表时间:
2011
期刊:
影响因子:
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作者:
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2017
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2016
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2017
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作者:
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通讯作者:
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DOI:
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发表时间:
2018
期刊:
影响因子:
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作者:
S. Tilmes;J. Richter;Michael J. Mills;B. Kravitz;D. MacMartin;Rolando R. Garcia;D. Kinnison;J. Lamarque;J. Tribbia;F. Vitt
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F. Vitt