Met (See Met Revision Too Multi Eng)

Question 1

Specific heat capacity

Answer 1

Ability of a material to hold thermal/heat energy

Question 2

3 factors that affect earths surface temp

Answer 2

Latitude, season and time of day

Question 3

What is Total air temp (TAT)

Answer 3

Product of SAT (which is basically OAT) and ram rise (compression of air on probe)

Question 4

What is the SALR

Answer 4

Temp change for a saturated air particle when cooled to its dew points, 1.5deg/1000ft

Question 5

4 main groups of cloud

Answer 5

Curriform, cumiliform, stratiform, nimbus

Question 6

3 layers of cloud and their bases

Answer 6

Low level = below 6500ft

Alto (med) level = greater than 6500ft

Cirro (high) level = greater than 16500 to 20000ft

Question 7

How do lenticular clouds form

Answer 7

When orographic uplift causes air to rise and cool adiabatically and once cooled, produces cloud

Question 8

Different stability of air type effect on lenticular clouds

Answer 8

Stable air = lenticular on hillside

Unstable air = cumulus or CBs

Question 9

How does radiation fog form and what is needed

Answer 9

When no cloud at night so ground cools air above and it condenses

Need moist air and wind below 8kt

Question 10

What 2 things does Virga show

Answer 10

Inversion and potential WS

Question 11

Height of instability needed for thunderstorm

Answer 11

ELR has to be greater than SALR, and over 10000ft

Question 12

How is turbulence shown on significant weather chart

Answer 12

Question 13

How is icing shown sig weather chart

Answer 13

Question 14

Thunderstorm symbol sig weather charts w

Answer 14

Question 15

What do thunderstorms on sig weather chart imply

Answer 15

Hail, mod or severe turbulence and icing

Question 16

What does a convergence line look like on surface pressure chart

Answer 16

Question 17

Effects of windshear

Answer 17

Handling issues, flight path deviations, airspeed loss

Question 18

What are the only two times wind is measured form magnetic north

Answer 18

ATC/ATIS and upper wind charts

Question 19

What is the geostrophic wind and what height is it found

Answer 19

Westerly airflow parallel to isobars with LP on left and is proportional to isobar at 2000ft+

Question 20

Gradient winds

Answer 20

Blow around isobars at low to medium heights approx 2000ft

Question 21

Where is the 2 common jet streams

Answer 21

Polar front 60lat and inter tropical front (sub tropical meet tropical air)

Question 22

What air mass is the jetstream in

Answer 22

Warm air mass

Question 23

Where is most of the CAT in a jetstream

Answer 23

Warm air but on the cold polar side, level or just above the core

Question 24

What happens to surface wind direction and speed when descending

Answer 24

Backs and slows due to friction layer

Question 25

Wind variation day and night, land and sea

Answer 25

Question 26

Trade winds characteristics and direction

Answer 26

15kts at surface up to 10,000ft NE in NH and SE in SH

Question 27

Sea breeze

Answer 27

Higher Pressure over land due to heating, so moves over sea, and air over sea moves over land Opposite for night

Question 28

4 types of depression

Answer 28

-orographic -frontal -thermal -tropcial

Question 29

Why is warm front slower

Answer 29

As it has to pass over denser cold front- geostrophic forced used vertically and horizontally to overcome (2/3rds)

Question 30

Shallow on metar

Answer 30

MI

Question 31

Patches on metar

Answer 31

BC

Question 32

Low drifting on metar

Answer 32

DR

Question 33

Blowing on metar

Answer 33

BL

Question 34

Ice pellets on metar

Answer 34

PL

Question 35

Small hail metar

Answer 35

GS

Question 36

Normal hail metar

Answer 36

GR

Question 37

Unknown precipitation metar

Answer 37

UP

Question 38

Spray on metar

Answer 38

PY

Question 39

Dust devils (dust/sand whirls) metar

Answer 39

PO

Question 40

Funnel cloud metar

Answer 40

FC

Question 41

Tornado or water spout metar

Answer 41

+FC

Question 42

Few okta scale

Answer 42

1-2

Question 43

Scattered okta scale

Answer 43

3-4

Question 44

Broken okta scale

Answer 44

5-7

Question 45

Overcast okta scale

Answer 45

8

Question 46

What is a convergence line

Answer 46

It is the formation of cloud due to wind from two directions meeting and rising

Question 47

Weather associated with a convergence line

Answer 47

A band of cloud that remains fairly stationary and can produce large amounts of rain across a relatively small area

Question 48

Dust

Answer 48

DU

Question 49

Dust storm

Answer 49

DS

Question 50

Mist

Answer 50

BR

Question 51

What weather expected with warm occlusion

Answer 51

Winter = rain, sleet, snow Summer = heavy rain

Question 52

What weather expected with cold occlusions

Answer 52

Winter = heavy snowfall Summer =CBs, heavy rain and downpours

Question 53

ISA deviation and altimeter error

Answer 53

For every 1deg deviation from ISA, the altimeter is 4ft wrong for every 1000ft

Question 54

What spheres can mountain waves form

Answer 54

Stratosphere and troposphere

Question 55

Wind speed for mountain waves

Answer 55

Increase with height within a stable layer above the hill (perpendicular to ridge, speed increasing )

Question 56

CB cell full cycle time length

Answer 56

2-3hrs

Question 57

When does hoar frost occur

Answer 57

When a/c is in sub zero clear air and suddenly enters warmer moist region

Question 58

Microburst time length and area

Answer 58

5 min across 5km

Question 59

Movement of a thunderstorm is associated with what

Answer 59

Wind at 10,000ft

Question 60

What happens when air from air mass moves to a lower latitude

Answer 60

Surface air warms, humidity falls and instability increases

Question 61

Large CU, temp of -20, amount the droplet will freeze is

Answer 61

1/4 of the droplet

Question 62

Polar front position January

Answer 62

Florida to SW England (35deg to 65deg)

Question 63

What does a secondary depression form alongside

Answer 63

Polar front low

Question 64

What is a thermal depression

Answer 64

Where the land is heated faster than water, creating instability. Large land masses in summer