| DOI: | 10.1002/2015GL065992
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| 论文题名: | Can cirrus cloud seeding be used for geoengineering? |
| 作者: | Penner J.E.; Zhou C.; Liu X.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9264
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| EISSN: | 1944-8995
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| 出版年: | 2015
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| 卷: | 42, 期:20 | | 起始页码: | 8775
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| 结束页码: | 8782
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| 语种: | 英语
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| 英文关键词: | cirrus clouds
; cloud seeding
; geoengineering
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| Scopus关键词: | Climate models
; Clouds
; Nucleation
; Cirrus clouds
; Climate forcings
; Community atmosphere model
; Geoengineering
; Model evaluation
; Polar Regions
; Restricted models
; Secondary organic aerosols
; Cloud seeding
; aerosol
; cirrus
; climate forcing
; climate modeling
; cloud seeding
; cooling
; heating
; ice crystal
; model validation
; nucleation
; warming
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| 英文摘要: | Cirrus cloud seeding has been proposed as a possible technique that might thin cirrus clouds leading to reduced heating. The technique was shown to be viable in one model evaluation. Here we use an updated version of the Community Atmosphere Model version 5 (CAM5) and reevaluate whether seeding is a viable mechanism for cooling. We explore different model setups (with and without secondary organic aerosols acting as heterogeneous ice nuclei). None of the updated versions of the CAM5 lead to a significant amount of negative climate forcing and hence do not lead to cooling. We only calculate a net negative cloud forcing (-0.74 ± 0.25 W m-2) if we restrict the modeled subgrid-scale updraft velocity during nucleation to <0.2 m s-1 and if the deposition of water vapor onto preexisting ice crystals during nucleation is not included. Hence, we do not find that cirrus cloud seeding is a viable climate intervention technique. Key Points Cirrus cloud seeding only works to cool climate for restricted model setup The most recent version of CAM5 predicts warming Mechanisms that attempt to restrict seeding to polar regions may not cool © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946553399&doi=10.1002%2f2015GL065992&partnerID=40&md5=5d753d0b95f16854e78d51807e32ec32
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8880
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, United States
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| Recommended Citation: | |
Penner J.E.,Zhou C.,Liu X.. Can cirrus cloud seeding be used for geoengineering?[J]. Geophysical Research Letters,2015-01-01,42(20).
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