Abstract
Smoke layers in the stratosphere were observed during autumn 2017 using PollyXT-UW Raman lidar at the European Aerosol Research Lidar Network in the frame of the Aerosol Cloud and Trace Gases Research Infrastructure, i.e. the EARLINET-ACTRIS site in Warsaw, Poland. The analysis was focused on discriminating very weak signatures of smoke layers in the stratosphere and investigating their optical properties. Preliminary results are presented and discussed. A decrease of the lidar-derived stratospheric aerosol optical depth contribution to the total optical depth was detected after the stratospheric smoke particles circled Northern Hemisphere.
Highlights
Smoke layers in the stratosphere were observed during autumn 2017 using PollyXT-UW Raman lidar at the European Aerosol Research Lidar Network in the frame of the Aerosol Cloud and Trace Gases Research Infrastructure, i.e. the EARLINET-ACTRIS site in Warsaw, Poland
While measurements from space are performed with a large diversity of techniques, long-term ground-based observations of stratosphere are highly valuable, as they ensure continuity and coherence of the stratospheric aerosol record [4, 5]
Lidar observations in the frame of the ACTRISPoland activities are conducted at the European EARLINET (ZZZHDUOLQHWRUJ, [12]), the worldwide Polly.NET (KWWSSROO\WURSRVGH, [13]) and Polish Aerosol Research Network PolandAOD-NET (ZZZSRODQGDRGSO, [14])
Summary
Smoke layers in the stratosphere were observed during autumn 2017 using PollyXT-UW Raman lidar at the European Aerosol Research Lidar Network in the frame of the Aerosol Cloud and Trace Gases Research Infrastructure, i.e. the EARLINET-ACTRIS site in Warsaw, Poland. In August 2017, these Canadian wildfire smoke events were observed in the troposphere and in the lower stratosphere (12-26 km) by several European lidar sites [7,8,9,10].
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