Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/29197
Title: | Wildfire smoke triggers cirrus formation: Lidar observations over the Eastern Mediterranean (Cyprus) | Authors: | Mamouri, Rodanthi-Elisavet Ansmann, Albert Ohneiser, Kevin Knopf, Daniel A. Nisantzi, Argyro Buhl, Johannes Engelmann, Ronny Skupin, Annett Seifert, Patric Baars, Holger Ene, Dragos Wandinger, Ulla Hadjimitsis, Diofantos G. |
Keywords: | Wildfire;Smoke;Lidar;Cyprus;Atmospheric | Issue Date: | 24-May-2023 | Project: | EXCELSIOR: ERATOSTHENES Centre of Excellence for Earth Surveillance and Space-Based Monitoring of the Environment : Teaming Phase1 GA 763643 | Abstract: | The number of intense wildfires may increase in the upcoming years as a consequence of climate change. Changing aerosol conditions may lead to changes in regional and global cloud and precipitation pattern. One key aspect of research is presently whether or not wildfire smoke particles can initiate ice nucleation. We found strong evidence that aged smoke particles (dominated by organic aerosol particles) originating from wildfires in North America triggered significant ice nucleation at temperatures from−47 to −53°C and caused the formation of extended cirrus layers. Our study is based on lidar observations over Limassol, Cyprus, from 27 October to 3 November 2020 when extended wildfire smoke fields crossed the Mediterranean Basin from Portugal to Cyprus. The observations suggest that the ice crystals were nucleated just below the tropopause in the presence of smoke particles serving as ice-nucleating particles (INPs). The main part of the 2-3 km thick smoke layer was,however, in the lower stratosphere just above the tropopause. With actual radiosonde observations of temperature and relative humidity and lidar-derived smoke particle surface area concentrations as starting values, gravity wave simulations show that lofting by 90-180 m is sufficient to initiate significant ice nucleation on the smoke particles, expressed in ice crystal number concentrations of 1-100 L−1 | URI: | https://hdl.handle.net/20.500.14279/29197 | Type: | Conference Papers | Affiliation : | ERATOSTHENES Centre of Excellence Leibniz Institut für Troposphärenforschung School of Marine and Atmospheric Sciences Cyprus University of Technology Technical University Wernigerode |
Appears in Collections: | Publications under the auspices of the EXCELSIOR H2020 Teaming Project/ERATOSTHENES Centre of Excellence |
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Wildfire smoke triggers cirrus formation Lidar observations over the Eastern Mediterranean (Cyprus).pdf | 2.36 MB | Adobe PDF | View/Open |
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