GEOG 1101 Lecture Notes - Lecture 8: Land, Baja California, Rain Shadow
27 Feb 2017
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* this is best seen in north america around the great lakes where downwind (leeward) areas of the lakes often have higher snow totals than similar areas upwind (windward) of the lakes. Sleet and freezing rain are two other solid forms of precipitation commonly occurring in winter. If it starts as a snowflake (bergeron process), then it melts to form a raindrop that then re-freezes before it hits the ground. As the snowflake falls it passes through air which is at a t above 32 f, melts, then passes through colder air (<32 f) again and freezes. Freezing rain: is similar to sleet except it freezes (re-freezes) after making contact with the ground. This usually involves supercooled raindrops which allows them to freeze on contact with solid objects/surfaces. * they form in the network of updrafts and down drafts contained within the t-storm which move the hail stone up & down within the cloud causing it to grow.
