Video: Nitric acid cools the climate by influencing the formation of cloud droplets
When the air is thick with aerosols that act as condensation nuclei for cloud droplets, the number of cloud droplets increases and their size decreases. In this case, the clouds reflect more sunlight back to the space. Under certain circumstances, the nitric acid in the air improves the ability of the aerosols to act as cloud condensation nuclei and thus further increases the number of cloud droplets. First model results suggest that nitric acid has cooled the climate as much as changes in land use, or 0.2–0.4 W/m².
Interviewee: Research professor Ari Laaksonen, Finnish Meteorological Institute
Video length: 5:24 min
Language: Finnish, with English subtitles
For courses in Finnish upper secondary schools: BI3, GE3, KE1 (old) -> BI2, GE1, KE1 (new curriculum/OPS)
Filmed by: Riku Mesiniemi ja Anna Puustinen, Finnish Meteorological Institute