only some of them are capable of doing so.It actually depends on their size, their chemical composition, and of course, the weather conditions as we have seen.
Based on these criteria, we find that not all aerosols have the stature of a condensation nucleus.
Based on these criteria, we find that not all aerosols have the stature of a condensation nucleus.
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Thus, in a cloud where the temperature is well below 0°C, we will find aerosols
There are, of course, similarities between a condensation nucleus and a crystallization nucleus, as they both interact with water vapor to provide a surface for it.
We then obtain a small hexagonal snow crystal !
First, there must be a temperature below 0°C, but also the presence of aerosols that allow the freezing of water vapor.
Some only become active at very low temp (around -15°C, for example), while others, more accommodating, can perform their function starting at -3°C.
But when things align well, we find ourselves in the presence of a fabulous primary snow crystal.
Credit : Kenneth Libbrecht