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Particle Formation in the Upper Tropical Troposphere: A Source of Nuclei for the Stratospheric Aerosol
Abstract
Atmospheric measurements and numerical calculations described here indicate that binary homogeneous nucleation of H 2 SO 4 -H 2 O particles occurs in the upper tropical troposphere. Particle concentrations decrease with increasing altitude above the tropical tropopause as a result of coagulation during the upward air transport produced by stratospheric circulations. During the extended periods of time that volcanic eruptions do not strongly influence stratospheric particle number concentrations, particles formed in the upper tropical troposphere provide nuclei upon which oxidized sulfur gases condense in the stratosphere. This particle source, coupled with aerosol microphysical properties and atmospheric transport, governs the number concentration of particles in the lower tropical and mid-latitude stratosphere.
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Citations
Cited by
Stratospheric aerosol-Observations, processes, and impact on climate
Kremser, S., Thomason, L. W., von Hobe, M., Hermann, M., Deshler, T., Timmreck, C., Toohey, M., Stenke, A., Schwarz, J. P., Weigel, R., et al. (2016) · Reviews of Geophysics · doi:10.1002/2015rg000511 · Cited by 578
Self-citationMurphy, D. M., Thomson, D. S., & Mahoney, M. J. (1998) · Science · doi:10.1126/science.282.5394.1664 · Cited by 571
Particle Formation by Ion Nucleation in the Upper Troposphere and Lower Stratosphere
Lee, S.-H., Reeves, J. M., Wilson, J. C., Hunton, D. E., Viggiano, A. A., Miller, T. M., Ballenthin, J. O., & Lait, L. R. (2003) · Science · doi:10.1126/science.1087236 · Cited by 361
Self-citationObservations of the chemical composition of stratospheric aerosol particles
Murphy, D. M., Froyd, K. D., Schwarz, J. P., & Wilson, J. C. (2014) · Quarterly Journal of the Royal Meteorological Society · doi:10.1002/qj.2213 · Cited by 141
Self-citationSolar geoengineering using solid aerosol in the stratosphere
Weisenstein, D. K., Keith, D. W., & Dykema, J. A. (2015) · Atmospheric Chemistry and Physics · doi:10.5194/acp-15-11835-2015 · Cited by 132
Metadata
- Authors
- Brock, C. A., Hamill, P., Wilson, J. C., Jonsson, H. H., & Chan, K. R.
- Venue
- Science
- Published
- 1995-12-08
- Volume
- 270
- Issue
- 5242
- Pages
- 1650-1653
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2009409696
- Cited by
- 216
- References
- 0
- FWCI
- 6.48
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Particle Formation in the Upper Tropical Troposphere: A Source of Nuclei for the Stratospheric Aerosol. https://app.cochat.ai/papers/10.1126/science.270.5242.1650
- The paper
- Brock, C. A., Hamill, P., Wilson, J. C., Jonsson, H. H., & Chan, K. R. (1995). Particle Formation in the Upper Tropical Troposphere: A Source of Nuclei for the Stratospheric Aerosol. Science. https://doi.org/10.1126/science.270.5242.1650
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
