Severe volcanic effects on stratospheric ozone
Severe volcanic effects on stratospheric ozone
批准号:
04452076
负责人:
IWASAKA Yasunobu
金额:
$3.9万
依托单位:
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
项目状态:
已结题
起止时间:
1992 至 1993
中文摘要
1991年6月菲律宾的皮纳图博火山喷发被认为是1990年代最严重的一次喷发,预计这次喷发对全球大气环境造成了很大的扰动。在这项研究中,我们重点研究了对大气化学过程的影响。1992财政年度,在东川对平流层气溶胶进行了激光雷达测量,并于次年继续进行了激光雷达测量,并重新尝试了数据分析。分析表明:1、增强的平流层气溶胶在1991年12月出现衰减,但在1992年夏季再次增强,这第二次增强可能是由于新的火山喷发,而不是动力作用,因为那些天去极化比也增加了。由于第二次喷发,扰动的衰减时间尺度似乎非常长。反硝化作用可能通过增强气溶胶上的非均相反应引起。增强型气溶胶对太阳辐射传输的散射效应可能导致平流层温度升高。综上所述,平流层会发生一些对臭氧的化学影响。然而,需要分析全局数据以便检测。1993年12月进行了气球测量,以探测火山对臭氧的影响。
英文摘要
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.
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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。
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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。
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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。
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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。
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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。
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共 10 条
Field studies on mixing state of dust and bioaerosol at desert areas : Direct sampling with balloon-borne instruments
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批准号:20253005
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$27.54万
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财政年份:2008
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Developments of Condensation Nuclei Counter used in the Troposphere and Stratosphere : Balloon-borne Type Counter
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Aerosol behavior and its effect on radiation in Asia-Pacific region
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财政年份:1998
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Atmospheric processes over the Tibetan plateau : atmospheric particle surface reaction destroying ozone
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批准号:10041115
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项目类别:Grant-in-Aid for Scientific Research (A).
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资助金额:$7.94万
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财政年份:1998
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The observation method of lower tropospheric aerosols using drop-aerosol-sondes : an application of a big size crewless airplane for measurements of environment
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批准号:09558067
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$7.55万
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财政年份:1997
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负责人:IWASAKA Yasunobu
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依托单位:
Effect of Aerosol Particles on Ozone Loss in the Tropica Stratosphere
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批准号:07408012
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$12.03万
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财政年份:1995
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负责人:IWASAKA Yasunobu
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依托单位:
Development of balloon-Borne particle counter : Stratospheric aerosol density and morphology
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批准号:07554078
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$2.5万
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财政年份:1995
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负责人:IWASAKA Yasunobu
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依托单位:
Transport of KOSA,SOx, and NOx from Asia to North-polar Region
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批准号:06041049
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项目类别:Grant-in-Aid for international Scientific Research
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资助金额:$12.03万
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财政年份:1994
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负责人:IWASAKA Yasunobu
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依托单位:
Development of Dew-Point-Sonde without CFCs
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批准号:05554011
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项目类别:Grant-in-Aid for Developmental Scientific Research (B)
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资助金额:$7.42万
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财政年份:1993
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负责人:IWASAKA Yasunobu
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依托单位:
Measurement on global changes in atmospheric constituents with optical method
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批准号:01044166
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项目类别:Grant-in-Aid for Overseas Scientific Survey.
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资助金额:$0.0万
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财政年份:1989
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负责人:IWASAKA Yasunobu
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依托单位:
Development of measurement for low level SO_2 gas content with chemiluminescence
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批准号:62840010
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资助金额:$4.35万
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财政年份:1987
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负责人:IWASAKA Yasunobu
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依托单位:
Statosphere-Stratosphere Exchange of Water Vapor
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批准号:62420012
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资助金额:$11.46万
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财政年份:1987
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负责人:IWASAKA Yasunobu
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依托单位:
海外基金