Publications by authors named "S Romakkaniemi"
Article Synopsis
- Aerosol particles contribute to climate cooling by scattering sunlight and serving as nuclei for cloud formation.
- Research shows that higher temperatures can lead to increased levels of biogenic secondary organic aerosols, which may intensify this cooling effect through a negative feedback mechanism.
- Observations from a boreal forest indicate that as temperatures rise, organic aerosol and cloud condensation nuclei concentrations also increase, enhancing cloud reflectivity and supporting the significance of this feedback in climate dynamics.*
Article Synopsis
- * A study using a detailed aerosol-radiation model reveals that changes in large-scale weather patterns significantly influence boundary layer dynamics more than just high aerosol concentrations.
- * The findings indicate that there is no specific threshold for aerosol effects on boundary layer height, meaning that standard intervention strategies may not effectively reduce pollution, highlighting the need for policy adjustments.
Modelling artificial sea salt emission in large eddy simulations.
Philos Trans A Math Phys Eng Sci
December 2014
We study the dispersion of sea salt particles from artificially injected sea spray at a cloud-resolving scale. Understanding of how different aerosol processes affect particle dispersion is crucial when designing emission sources for marine cloud brightening. Compared with previous studies, we include for the first time an explicit treatment of aerosol water, which takes into account condensation, evaporation and their effect on ambient temperature.
View Article and Find Full Text PDFThis study presents results of direct observations of aerosol chemical composition in clouds. A high-resolution time-of-flight aerosol mass spectrometer was used to make measurements of cloud interstitial particles (INT) and mixed cloud interstitial and droplet residual particles (TOT). The differences between these two are the cloud droplet residuals (RES).
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