Contribution of regional aerosol nucleation to low-level CCN in an Amazonian deep convective environment: results from a regionally nested global model

Wang, Xuemei; Gordon, Hamish; Grosvenor, Daniel P.; Andreae, Meinrat O.; Carslaw, Ken S.

doi:https://doi.org/10.5194/acp-23-4431-2023

Articles | Volume 23, issue 7

https://doi.org/10.5194/acp-23-4431-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-4431-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 7

Research article

|

14 Apr 2023

Research article |

| 14 Apr 2023

Contribution of regional aerosol nucleation to low-level CCN in an Amazonian deep convective environment: results from a regionally nested global model

Xuemei Wang, Hamish Gordon, Daniel P. Grosvenor, Meinrat O. Andreae, and Ken S. Carslaw

Data sets

Contribution of regional aerosol nucleation to low-level CCN in an Amazonian deep convective environment: results from a regionally nested global model X. Wang, H. Gordon, D. P. Grosvenor, M. O. Andreae, and K. Carslaw https://doi.org/10.5281/zenodo.7809112

Particle number concentrations measured by CPC and UHSAS during the ACRIDICON-CHUVA campaign in 2014 M. O. Andreae https://halo-db.pa.op.dlr.de/mission/5

Video supplement

Contribution of regional aerosol nucleation to low-level CCN in an Amazonian deep convective environment: results from a regionally nested global model X. Wang, H. Gordon, D. P. Grosvenor, M. O. Andreae, and K. Carslaw https://doi.org/10.5281/zenodo.7809112

Short summary

New particle formation in the upper troposphere is important for the global boundary layer aerosol population, and they can be transported downward in Amazonia. We use a global and a regional model to quantify the number of aerosols that are formed at high altitude and transported downward in a 1000 km region. We find that the majority of the aerosols are from outside the region. This suggests that the 1000 km region is unlikely to be a closed loop for aerosol formation, transport and growth.