Evsc Pp 3

Front 1

foreign surfaces where condensation occurs...

Back 1

1. ground, vegetation --> dew and frost

2. atmosphere: aerosols

Front 2

aerosols that allow for water vapor condensation

Back 2

Cloud Condensation Nuclei

size: .001-10um

Front 3

water molecules attract to CCN and...

Back 3

cloud droplets form

Front 4

aerosols:

Back 4

particles of dust, smoke, salts, pollutants

Front 5

small CCNs require ____ air for the formation of droplets

Back 5

moist

Front 6

rain droplet size

Back 6

.001- .2 mm

Front 7

size of droplets that reach the ground

Back 7

.4-4 mm

Front 8

3 Requirements for Cloud Formation

Back 8

1. presence of water vapor
2. presence of aerosols serving as CCNs
3. cooling via "uplift"

Front 9

3 Requirements for Precipitation

Back 9

1. cloud formation
2. droplet growth
3. importation of water vapor into the cloud
*supply of moisture from outside is needed b/c the moisture present in the cloud is not sufficient to generate enough precipitation

Front 10

2 things droplet growth depends on...

Back 10

1. growth of ice crystals
2. merging of water droplets

Front 11

3 causes of uplift

Back 11

1. convergence of air masses
2. convection: hot air near the earth's surface rises (warmer air is less dense)
3. orography

Front 12

3 things the occurence of UPLIFT depends on

Back 12

1. geographic location
2. surface temps (effects convection)
3. general circulation (determines convergence)

Front 13

Regions of Upward Motions (rising warm, moist air)

Back 13

1. equator
2. 60 lat N
3. 60 lat S

Front 14

Regions of Downward Motions (descending cool, dry air)

Back 14

1. tropics
2. poles
3. tropical/polar deserts

Front 15

poles/tropics have ___ preciptiation

equator, mid-latitudes have ____ precipitation

Back 15

low, high

Front 16

Rain Shadow

Back 16

A dry region of land that is leeward of a mountain range

the mountains block the passage of rain-producing weather systems, casting a "shadow" of dryness behind them

Front 17

front of the mountatin =

Back 17

warm, moist air with rain from expansion and cooling

Front 18

back of the mountain (region of the rain shadow)

Back 18

warm, dry air with evaporation from compression and warming

Front 19

uplift

Back 19

the main cooling mechanism that leads to cloud formation