Physical Characteristics of the Natural Atmospheric Aerosol.
Abstract
In this report an analysis is made of continuous measurements of the number and size distribution of submicrometre and large aerosol particles up to 5 micrometres in radius. An automated optical particle counter was used to take measurements at a 10 minute sampling frequency over a 49 day period at Durham Observatory, near Durham City, North East of England. Additional measurements were made at a remote mountain station at Great Dun Fell, 842 m msl and at an isolated maritime site. The averaged diurnal variation shows a maximum in particle number concentration from about 0200-0800 local time and a distinctive minimum over the period 1400-2000 hours. The particle number concentration follows a long-normal distribution. An analysis of the sampling frequency shows that the measurements could be made less frequently by factors up to 20, without loss of significant information.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1976
- Accession Number
- ADA036088
Entities
People
- S. Gerard Jennings
Organizations
- Durham University