Please use this identifier to cite or link to this item:
Impact of desert dust on new particle formation events and the cloud condensation nuclei budget in dust-influenced areas
Title: Impact of desert dust on new particle formation events and the cloud condensation nuclei budget in dust-influenced areas
Authors: Casquero Vera, Juan AndrésPérez Ramírez, DanielLyamani, HassanRejano, FernandoCasans, AndreaTitos Vela, GloriaOlmo Reyes, Francisco JoséDada, LubnaHakala, SimoHussein, TareqLehtipalo, KatriannePaasonen, PauliHyvärinen, AnttiPérez, NoemíQuerol, XavierRodríguez González, Sergio ORCID RESEARCHERID Autor AEMETKalivitis, NikosGonzález Ramos, Yenny ORCID Autor AEMETAlghamdi, Mansour A.Kerminen, Veli-MattiAlastuey, AndrésPetäjä, TuukkaAlados Arboledas, Lucas
Keywords: Desert dust; Aerosol particles; New particle formation; Cloud condensation; Atmospheric aerosol
Issue Date: 2023
Publisher: European Geosciences Union; Copernicus Publications
Citation: Atmospheric Chemistry and Physics. 2023, 23(24), 15795–15814
Publisher version:
Abstract: Detailed knowledge on the formation of new aerosol particles in the atmosphere from precursor gases, and their subsequent growth, commonly known as new particle formation (NPF) events, is one of the largest challenges in atmospheric aerosol science. High pre-existing particle loadings are expected to suppress the formation of new atmospheric aerosol particles due to high coagulation and condensation (CS) sinks. However, NPF events are regularly observed in conditions with high concentrations of pre-existing particles and even during intense desert dust intrusions that imply discrepancies between the observations and theory. In this study, we present a multi-site analysis of the occurrence of NPF events under the presence of desert dust particles in dust-influenced areas. Characterization of NPF events at five different locations highly influenced by desert dust outbreaks was done under dusty and non-dusty conditions using continuous measurements of aerosol size distribution in both fine and coarse size fractions. Contrary to common thought, our results show that the occurrence of NPF events is highly frequent during desert dust outbreaks, showing that NPF event frequencies during dusty conditions are similar to those observed during non-dusty conditions. Furthermore, our results show that NPF events also occur during intense desert dust outbreaks at all the studied sites, even at remote sites where the amounts of precursor vapours are expected to be low. Our results show that the condensation sink associated with coarse particles (CSC) represents up to the 60 % of the total CS during dusty conditions, which highlights the importance of considering coarse-fraction particles for NPF studies in desert-dust-influenced areas. However, we did not find a clear pattern of the effect of desert dust outbreaks on the strength of NPF events, with differences from site to site. The particle growth rate (GR) did not present a clear dependence on the CS during dusty and non-dusty conditions.
Sponsorship : This research has been partially supported by the Spanish Ministry of Science and Innovation (grant nos. PID2020-120015RB-I00, RED2022-134824-E, PID2019-108990RB-I00 and PID2021-128757OB-I00 funded by MCIN/AEI/10.13039/501100011033) and by the European Union’s Horizon 2020 Research and Innovation programme through projects ACTRIS IMP (grant no. 871115) and ATMO ACCESS (grant no. 101008004) and via Horizon Europe through “Non-CO2 Forcers and their Climate, Weather, Air Quality and Health Impacts”, FOCI (project no. 101056783). This research was also partially supported by Plan Propio of University of Granada through EMERALD project (PPJIA2022-15) and the Singular Laboratory AGORA programme (LS2022-1) and Scientific Units of Excellence Program (grant no. UCE-PP2017-02) and by the Consejo Superior de Investigaciones Científicas (CSIC) under project 202030E261. Measurements at Hada Al Sham were funded by the Deanship of Scientific Research (DSR; grant no I-122-430) at King Abdulaziz University (KAU).
ISSN: 1680-7316
Appears in Collections:Artículos científicos 2023-2026

Files in This Item:
  File Description SizeFormat 
3,03 MBAdobe PDFThumbnail
1,07 MBAdobe PDFThumbnail
Show full item record

Items in Arcimis are protected by Creative Commons License, unless otherwise indicated.

Arcimis Repository
Nota Legal Contacto y sugerencias