| DOI: | 10.1002/2015GL065523
|
| 论文题名: | Substorm-induced energetic electron precipitation: Impact on atmospheric chemistry |
| 作者: | Seppälä A.; Clilverd M.A.; Beharrell M.J.; Rodger C.J.; Verronen P.T.; Andersson M.E.; Newnham D.A.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8564
|
| EISSN: | 1944-8295
|
| 出版年: | 2015
|
| 卷: | 42, 期:19 | | 起始页码: | 8172
|
| 结束页码: | 8176
|
| 语种: | 英语
|
| 英文关键词: | energetic electron precipitation
; HOx
; mesosphere
; NOx
; ozone
; substorms
|
| Scopus关键词: | Climate models
; Earth atmosphere
; Electron scattering
; Electrons
; Ionosphere
; Magnetosphere
; Ozone
; Chemistry-climate models
; Electron precipitation
; Energetic electron precipitation
; Energetic particles
; Magnetospheric substorms
; Mesosphere
; Solar proton events
; Substorms
; Atmospheric chemistry
; atmospheric chemistry
; atmospheric modeling
; geomagnetic storm
; hydrogen
; ionization
; magnetosphere
; mesosphere
; nitrous oxide
; ozone
; polar region
; precipitation (climatology)
|
| 英文摘要: | Magnetospheric substorms drive energetic electron precipitation into the Earth's atmosphere. We use the output from a substorm model to describe electron precipitation forcing of the atmosphere during an active substorm period in April-May 2007. We provide the first estimate of substorm impact on the neutral composition of the polar middle atmosphere. Model simulations show that the enhanced ionization from a series of substorms leads to an estimated ozone loss of 5-50% in the mesospheric column depending on season. This is similar in scale to small to medium solar proton events (SPEs). This effect on polar ozone balance is potentially more important on long time scales (months to years) than the impulsive but sporadic (few SPE/year versus three to four substorms/day) effect of SPEs. Our results suggest that substorms should be considered an important source of energetic particle precipitation into the atmosphere and included in high-top chemistry-climate models. Key Points Substorms occur 3-4 times/day driving energetic electron precipitation into the atmosphere This type of electron precipitation is not yet included in atmospheric models Substorms can drive up to 50% loss in the mesospheric ozone column © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947034981&doi=10.1002%2f2015GL065523&partnerID=40&md5=ad3f9a4a0077e1b7a7754ac75d0f53fe
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8180
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Finnish Meteorological Institute, Helsinki, Finland
|
| Recommended Citation: | |
Seppälä A.,Clilverd M.A.,Beharrell M.J.,et al. Substorm-induced energetic electron precipitation: Impact on atmospheric chemistry[J]. Geophysical Research Letters,2015-01-01,42(19).
|
|
|