Severe volcanic effects on stratospheric ozone

火山对平流层臭氧的严重影响

• 批准号: 04452076
• 负责人: IWASAKA Yasunobu
• 金额: $ 3.9万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04452076/
• 关键词: Stratospheric aerosol; Volcanic effects; Pinatubo volcano; ピナツボ火山噴火; 成層圏エアロゾル層; オゾン層への火山影響; レーザレーダ観測; 太陽紫外線強度; オゾン全量への火山影響

The eruption of Mt.Pinatubo (Phillipine, June 1991) is believed to be most serious eruption in 1990', and it is expected that the eruption largely disturved global atmospheric environment. In this research, we focussed on the effects on atmospheric chemical processes. In 1992 FY, lidar measurements on the stratospheric aerosols was made at Toyokawa, and in following year the lidar measuremetns was continued and data analysis was newly tried. The analysis showed following points ;1, The enhanced stratospheric aerosols showed its decay in December 1991, but enhance again in summer 1992.2, This second enhancement is possibly due to new volcanic eruption and not dynamical effect since depolarization ratio also increased those days.3, Decay time scale of the distrubance seems to be extremely long due to the second eruption.4, Denitrification may be caused through heterogeneous reaction on enhanced aerosols.5, Stratospheric temperature may increase through scattering effects of enhanced aerosols on solar radiative transfer.Summarizing those, some chemical effects on ozone will occur in the stratosphere. However it is desired to analize global data in order to detect.Balloon measurements was tried in December 1993 to detect the volcanic effects on ozone.

皮纳图博火山(1991年6月)的喷发被认为是20世纪90年代最严重的一次喷发，预计这次喷发在很大程度上扰乱了全球大气环境。在这项研究中，我们重点研究了对大气化学过程的影响。1992财年，丰川对平流层气溶胶进行了激光雷达测量，第二年继续进行激光雷达测量，并进行了新的数据分析。分析表明：1、增强型平流层气溶胶在1991年12月表现为衰变，但在1992.2夏季再次增温，这可能是由于新的火山喷发，而不是动力作用所致。3、由于二次喷发，增强型平流层气溶胶的衰变时间尺度似乎很长。4、反硝化作用可能是通过增强型气溶胶对太阳辐射传输的散射作用而引起的。5、增强型气溶胶对太阳辐射传输的散射作用可能导致平流层温度升高。综上所述，平流层臭氧将发生一些化学效应。然而，人们希望分析全球数据以进行探测。1993年12月尝试了气球测量，以探测火山对臭氧的影响。

项目成果

Iwasaka Y.: "Lidar measurements of stratospheric aerosols enhanced after eruption of Mt.Pinatubo : Alaska, winter 1991/1992" Proc.NIPR Symp.Meteorol.Glaciol.7. 83-89

Iwasaka Y.：“平流层气溶胶的激光雷达测量在皮纳图博山喷发后增强：阿拉斯加，1991/1992 年冬季”Proc.NIPR Symp.Meteorol.Glaciol.7。

O.Uchino: "Observation of Plnatubo Volcanic Cloud by Lidar Network Japan" J.Meteorol.Soc Japan. 70. (1993)

O.Uchino：“日本激光雷达网络对 Plnatubo 火山云的观测”J.Meteorol.Soc Japan。

Iwasaka,Y.: "Lidar measurements of stratospheric aerosols enhenced after eruption of Mt.Pinatubo:Alaska,winter 1991/1992" Proc.NIPR Symp.Meteorol.Glaciol.7. 83-89 (1993)

Iwasaka,Y.：“平流层气溶胶的激光雷达测量在皮纳图博山喷发后增强：阿拉斯加，1991/1992 年冬季”Proc.NIPR Symp.Meteorol.Glaciol.7。

Uchino O: "Observation of the Pinatubo Volcanic Cloud by lidar network in Japan" J.Meteorol.Sco.Japan. 71. 285-295 (1993)

Uchino O：“日本激光雷达网络对皮纳图博火山云的观测”J.Meteorol.Sco.Japan。

Kondo Y.: "Reactive nitrogen,and nitrate aerosols observed in the arctic stratosphere in January 1990" J.Geophys.Res.97. 13025-13038 (1992)

Kondo Y.：“1990 年 1 月在北极平流层观察到的活性氮和硝酸盐气溶胶”J.Geophys.Res.97。