Substantial convection and precipitation enhancements by ultrafine aerosol particles
Abstract
Aerosol-cloud interactions remain the largest uncertainty in climate projections. Ultrafine aerosol particles smaller than 50 nanometers (UAP<50) can be abundant in the troposphere, but are conventionally considered too small to affect cloud formation. However, observational evidence and numerical simulations of deep convective clouds (DCCs) over the Amazon show that DCCs forming in a low aerosol environment can develop very large vapor supersaturation because fast droplet coalescence reduces integrated droplet surface area and subsequent condensation. UAP<50 from pollution plumes that are ingested into such clouds can be activated to form additional cloud droplets on which excess supersaturation condenses and forms additional cloud water and latent heating, thus intensifying convective strength. This mechanism suggests a strong anthropogenic invigoration of DCCs in previously pristine regions of the world.
- Authors:
- more »
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF); National Science Foundation of China; European Union (EU); Cloud Processes of the Main Precipitation System (CHUVA) project; National Institute of Amazonian Research (INPA); Amazonas State Univ. (UEA); Amazonas State Research Support Foundation (FAPEAM); National Council for Scientific and Technological Development (CNPq); German Federal Ministry of Education and Research (BMBF)
- OSTI Identifier:
- 1438524
- Alternate Identifier(s):
- OSTI ID: 1424983
- Report Number(s):
- BNL-203206-2018-JAAM
Journal ID: ISSN 0036-8075; /sci/359/6374/411.atom
- Grant/Contract Number:
- award364292; award317001; AC06-76RLO1830; SC0012704; AC06-76RL01830; AGS1534670; 91544217; 2009/15235-8; 2013/05014-0; 2013/50510-5; 01LB1001A; 01.11.01248.00
- Resource Type:
- Published Article
- Journal Name:
- Science
- Additional Journal Information:
- Journal Name: Science Journal Volume: 359 Journal Issue: 6374; Journal ID: ISSN 0036-8075
- Publisher:
- American Association for the Advancement of Science (AAAS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Fan, Jiwen, Rosenfeld, Daniel, Zhang, Yuwei, Giangrande, Scott E., Li, Zhanqing, Machado, Luiz A. T., Martin, Scot T., Yang, Yan, Wang, Jian, Artaxo, Paulo, Barbosa, Henrique M. J., Braga, Ramon C., Comstock, Jennifer M., Feng, Zhe, Gao, Wenhua, Gomes, Helber B., Mei, Fan, Pöhlker, Christopher, Pöhlker, Mira L., Pöschl, Ulrich, and de Souza, Rodrigo A. F.. Substantial convection and precipitation enhancements by ultrafine aerosol particles. United States: N. p., 2018.
Web. doi:10.1126/science.aan8461.
Fan, Jiwen, Rosenfeld, Daniel, Zhang, Yuwei, Giangrande, Scott E., Li, Zhanqing, Machado, Luiz A. T., Martin, Scot T., Yang, Yan, Wang, Jian, Artaxo, Paulo, Barbosa, Henrique M. J., Braga, Ramon C., Comstock, Jennifer M., Feng, Zhe, Gao, Wenhua, Gomes, Helber B., Mei, Fan, Pöhlker, Christopher, Pöhlker, Mira L., Pöschl, Ulrich, & de Souza, Rodrigo A. F.. Substantial convection and precipitation enhancements by ultrafine aerosol particles. United States. https://doi.org/10.1126/science.aan8461
Fan, Jiwen, Rosenfeld, Daniel, Zhang, Yuwei, Giangrande, Scott E., Li, Zhanqing, Machado, Luiz A. T., Martin, Scot T., Yang, Yan, Wang, Jian, Artaxo, Paulo, Barbosa, Henrique M. J., Braga, Ramon C., Comstock, Jennifer M., Feng, Zhe, Gao, Wenhua, Gomes, Helber B., Mei, Fan, Pöhlker, Christopher, Pöhlker, Mira L., Pöschl, Ulrich, and de Souza, Rodrigo A. F.. Thu .
"Substantial convection and precipitation enhancements by ultrafine aerosol particles". United States. https://doi.org/10.1126/science.aan8461.
@article{osti_1438524,
title = {Substantial convection and precipitation enhancements by ultrafine aerosol particles},
author = {Fan, Jiwen and Rosenfeld, Daniel and Zhang, Yuwei and Giangrande, Scott E. and Li, Zhanqing and Machado, Luiz A. T. and Martin, Scot T. and Yang, Yan and Wang, Jian and Artaxo, Paulo and Barbosa, Henrique M. J. and Braga, Ramon C. and Comstock, Jennifer M. and Feng, Zhe and Gao, Wenhua and Gomes, Helber B. and Mei, Fan and Pöhlker, Christopher and Pöhlker, Mira L. and Pöschl, Ulrich and de Souza, Rodrigo A. F.},
abstractNote = {Aerosol-cloud interactions remain the largest uncertainty in climate projections. Ultrafine aerosol particles smaller than 50 nanometers (UAP<50) can be abundant in the troposphere, but are conventionally considered too small to affect cloud formation. However, observational evidence and numerical simulations of deep convective clouds (DCCs) over the Amazon show that DCCs forming in a low aerosol environment can develop very large vapor supersaturation because fast droplet coalescence reduces integrated droplet surface area and subsequent condensation. UAP<50 from pollution plumes that are ingested into such clouds can be activated to form additional cloud droplets on which excess supersaturation condenses and forms additional cloud water and latent heating, thus intensifying convective strength. This mechanism suggests a strong anthropogenic invigoration of DCCs in previously pristine regions of the world.},
doi = {10.1126/science.aan8461},
journal = {Science},
number = 6374,
volume = 359,
place = {United States},
year = {2018},
month = {1}
}
https://doi.org/10.1126/science.aan8461
Web of Science
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