Abstract
The results of a year's observations of stratospheric aerosols using a ruby laser radar are presented. The measurements were carried out at Adelaide, South Australia (lat. 35°S) during the period April 1969–April 1970. The observations indicate a marked annual variation in the stratospheric aerosol total back-scattering coefficient, with maximum values occurring in mid-winter (July). The annual effect is interpreted as a seasonally dependent poleward transfer of aerosols from an equatorial reservoir. Individual nightly profiles are indicative of an eddy transport mechanism, and are similar in many respects to the characteristics observed in the transport of ozone. During winter, the magnitude of aerosol scattering in the lower stratosphere appears to be related to features of the upper level synoptic pattern. High aerosol scattering values are often observed when a low pressure region, or trough, is overhead, while weak aerosol scattering often occurs when a high pressure region, or ridge, is overhead. As a consequence of the seasonal influx of material, the aerosol scattering profiles are more variable in winter than in summer. During February 1970, a sudden influx of aerosols in thes 30–40 km altitude region was detected. These additional aerosols still persisted in May 1970.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
