Precipitation

Question 1

1-what is coalescence theory
2-what is the ice particle(Bergeron) theory

Answer 1

1-at clouds where temps are above 0, rain drops form because condensed water droplets collide with each other and increase in size, heavier droplets travel upwards at a slower rate than smaller ones and a chain reaction is established
2-ice particles must be present in upper part of cloud before precip can begin, normally only happens once temp falls below -10, ice particles will grow ravidly by deposition and collisions with super-cooled water droplets, once too heavy, they fall and grow in size

Question 2

What are the 6 levels of precip

Answer 2

1-light
2-light-moderate rain
3-moderate-heavy rain
4-heavy rain
5-very heavy rain, hail possible
6-very heavy rain and hail, large hail possible

Question 3

What clouds do the following types of Precip fall from
1-drizzle
2-rain
3-rain showers
4-snow
5-snow grains
6-small hail/snow pellets
7-hail
8-freezing rain
9-freezing drizzle
10-ice pellets
11-ice crystals

Answer 3

1-ST/SC
2-SC, AS, NS
3-CU, CB
4-AS, NS
5-ST
6-CB
7-CB
8-AS, NS
9-ST
10-AS, NS
11-CS