Lidar Monitoring at mid latitude of the stratospheric aerosol perturbation produced by the El Chichón eruption
We report lidar measurements of the perturbation in the atmospheric dust load produced by the El Chichón volcanic eruption. The measurements extend for a 19 month period and are taken at a mid-latitude station. Analysis of the backscattering ratio and integrated backscattering as a function of altit...
| Authors: | , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 1984 |
| Country: | México |
| Institution: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repository: | Geofísica Internacional |
| Language: | Spanish |
| OAI Identifier: | oai:revistagi.geofisica.unam.mx:article/1112 |
| Online Access: | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1112 |
| Access Level: | Open access |
| Keyword: | Aerosol estratosférico Monitoreo Lidar Erupciones volcánicas Volcán El Chichón Stratospheric aerosol Monitoring Volcanic eruptions El Chichón Volcano |
| Summary: | We report lidar measurements of the perturbation in the atmospheric dust load produced by the El Chichón volcanic eruption. The measurements extend for a 19 month period and are taken at a mid-latitude station. Analysis of the backscattering ratio and integrated backscattering as a function of altitude show that until the end of summer 1982, optical thickness was contributed mainly by high altitude (≥ 25 km) layers. Since the fall of 1982 the main cloud arrival at mid latitude formed a broad single !ayer extending from 15 to 30 km. Slow decay in the altitude of this layer, 7 - 8 km in 12 months, is attributed to a contribution of general circulation and settling velocity of the dust particles. It is shown that our optical thickness data are consistent with similar independent measurements. |
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