Anticyclones

Question 0

Mid latitude continents: winter

Answer 0

Land chills quickly, leads to high pressure.

Question 1

Mid latitude continents: summer

Answer 1

Land heats up quickly, leads to a fall in pressure.

Question 2

Continental anticyclones: (5)

Answer 2

Sinking motion, very cold air at surface. 
Little cloud. 
Air is dry; far from moisture. 
Seasonal; winter. 
Occur still higher latitudes.

Question 3

Continental anticyclones: Autumn (2)

Answer 3

Vertical rate of pressure change is rapid because the lowest 2km of the troposphere is so cold.

Intense cooling begins; increase in air density; start of shallow anticyclone.

Question 4

Continental anticyclones: Winter

Answer 4

Strong radiative cooling to space.

Question 5

Subtropical anticyclones: seasonal variation

Answer 5

Winter - tend to be at lower latitudes than in summer.

Summer - higher latitudes; more intense.

Question 6

Subtropical anticyclones: occur at around

Answer 6

30’ N/S

Question 7

Subtropical anticyclones: air is sinking from

Answer 7

Upper to lower levels; subsidence.

Air spirals out into lower levels.

Question 8

Subtropical anticyclones: lowest 1 km of atmosphere

Answer 8

Over the oceans is rich in moisture.

Question 9

Subtropical anticyclones: weather conditions (3)

Answer 9

Dry weather.
Low relative humidity.
Cloudy - shallow stratiform cloud.

Question 10

Subtropical anticyclones: semi permanent high over

Answer 10

Subtropical pacific and N Atlantic Ocean (Azores high) w

Question 11

Subtropical anticyclones: source regions for air masses; (2)

Answer 11

Deep subsiding motion.

Dry air is sinking into higher pressure, warming at the DALR of 9.8 ‘C km-1

Question 12

Subtropical anticyclones: Dry air sinks, warming adiabatically; (3)

Answer 12

Relative humidity decreases simultaneously.
Dry bulb temperature increases rapidly.
Absolute humidity remains the same, but saturation value increases as DB temp rises.