Publication Date:
2019
Description:
Abstract
Heterogeneous ice nucleating particle (INP) concentrations are reported for a site on the eastern margin of Beijing, China during the period 4 May – 4 June 2018. INP concentrations were measured continuously at ‐20, ‐25 and ‐30 °C in a repeating cycle by a newly developed, automated continuous flow diffusion chamber, and reached concentrations as high as 2800 sL‐1 during dust‐impacted periods. Study‐average concentrations were 70 ± 70, 230 ± 290 and 430 ± 500 sL‐1 at ‐20, ‐25, and ‐30 °C. There was no clear relationship between pollution periods, identified based on fine‐mode particle concentration increases, and INP concentrations or characteristics. Other anthropogenic emissions, such as non‐combustion industrial or agricultural activities play an unresolved role.
Print ISSN:
2169-897X
Electronic ISSN:
2169-8996
Topics:
Geosciences
,
Physics
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