AE - Climatology Flashcards Preview

MET > AE - Climatology > Flashcards

Flashcards in AE - Climatology Deck (58):
1

Cold air pool = ___ visibility

low

2

easterly waves are most likely to form in the ___ wind zone

trade wind

3

Are trade winds more pronounced over oceans or continents?

More pronounced over water (oceans)

4

Hvar er ITCZ staðsett um vetur í latitude?

0-5°N

5

What is the average latitude for travelling frontal depressions?

60°N

6

Á hvaða árstíð blæs Bora?

Winter, spring.

7

Hvaða tveir vindar eru aðal yfirborðsvindarnir í norður Afríku á sumrin og svo veturna, north of the equator?

SW monsoon in the summer and NE tradewind in the winter

8

Hvenær er mest weather activity in a cold pool?

afternoon

9

Sub-tropical high pressure belt: __°-__°

25°-35°

10

Easterly waves: Most likely to form in the
a) region of the equator between 0° and 5 north or south
b) trade wind zone.

b) trade wind zone.

11

Í harmattan þá er hætta sem stafar af flugi vegna
a) Sand up to FL150
b) Dust and poor visibility

b) Dust and poor visibility

12

Á svæðinu þar sem easterly waves eru.. hvernig er veðrið þarna?

thunderstorms and rain.

13

Í tropical rain climate (aka equatorial), hvað er RH, freezing level og average temperature?

RH: 80%
freezing level: 15,000 ft.
average temperature: 28°C

14

Hvernig er veðrið í flat pressure pattern um sumar?

Generally fine weather, possibly thunderstorms in the afternoon or evening.

15

Myndir þú sjá cold air pool á surface chart?

Nei, þetta er aðallega í middle troposphere.

16

Hvernig er tíðarfar í Savannah (tropical transitional)?

ein stutt vætutíð og svo mjög þurrt.

17

Hvað eru mörg rain seasons í Nairobi, Kenya?

2

18

Í hvaða mánuði skiptist klikkaði SW monsooninn yfir í NE monsoon?

September

19

Hvenær eru rain seasonin í equatorial Africa?

March-May og
Oct-Nov

20

Rainfall í mediterranean climate, er það yfir eða undir 700mm?

Undir

21

An aircraft is climbing away from a cold air pool. What can be expected?
a) strong updraughts
b) aircraft performance reduces

b) aircraft performance reduces

22

Hvar eru "the doldrums"?

Equatorial low - ITCZ - "Doldrums"

23

In the central part of the Atlantic Ocean between 10°N and 20°N the prevailing surface winds are..

NE trade winds.
Think about it, þetta er bara swirlið frá horse latitudes niður að equatorial low (ITCZ).

24

Hvort er stronger, "the roaring forties" SH eða "the westerlies" NH ?

the roaring forties are stronger. (Held því það er meiri sjór í SH = minna viðnám = meiri hraði).

25

Hvernig er úrkoman í equatorial region og á hvaða tímabili?

Rain- and hail showers and thunderstorms occur the whole year. Frequency is the highest in two periods, April-May and October-November.

26

Í hvaða mánuði byrjar Harmattan að blása?

NE wind affecting northwest Africa during November to April

27

Where are the westerlies to be expected?
a) between 65°and 80° north or south
b) in the subtropical high pressure belt
c) in the mid-latitudes

c) in the mid-latitudes

28

Á hvaða latitude er prevailing westerlies?

50°N (hjálpar manni að hugsa að westerlies eru í mid-latitudes og ef heimurinn er 0°-90° þá er helmingurinn af því 45 sem er nærri 50).

29

Á hvaða latitudes er subtropical high-pressure belt?

25°-35°

30

Hvað heitir loftið sem kemur frá Polar Cap?

Arctic air

31

If you cool the underlying surface, stability will
a) increase
b) decrease

a) increase

32

A low pressure area associated with a surface front, is the ___ front low

Polar

33

The lowest cloud type observed is Stratus fractus, and tehre is moderate continuous rain. The area you are most likely situated in is:
a) the warm sector
b) in the main body of a warm or cold front

b) in the main body of a warm or cold front

34

Í COLD occlusion, hvernig ský eru þarna í "dalnum" á milli frontanna?

Í cold occlusion er þetta CB
Í warm occlusion held ég að svarið væri stratus.

35

How do airmasses acquire their properties?
a) pressure system of the source
b) characteristics of the source
c) moisture content
d) latitude

a) pressure system of the source
b) characteristics of the source

36

In the northern hemisphere, the advection of warm air aloft indicates the approach of a ___ ____.

warm occlusion.

37

Hvernig er loftið eftir að warm front hefur farið framhjá?
a) unstable Martime tropical
b) Stable Maritime Tropical.
c) unstable Continental Tropical
d) Stable Continental Tropical

b) Stable Maritime Tropical.

38

The polar front is the boundary between
a) Arctic air and polar air
b) Polar air and tropical air

b) Polar air and tropical air

39

The air mass in the warm sector of a polar front is ___ air.

tropical

40

What characterizes a stationary front? The surface wind has it's direction ___ to the front.

parallel

41

In what season do cold occlusions occur the most in Europe?

Summer

42

In a warm occlusion, the ___ front becomes a front aloft.

cold

43

In what direction does the centre of a non-occluded frontal depression move?

in the direction of the warm sector isobars.

44

Frontal depressions can be assumed to move in the direction of the 2000 feet wind in front of the __ front.

warm.
Hrikalega orðað, þýðir held ég bara að vindurinn fer skv. isobars í warm sector fyrir ofan jarðhrifin. (sem maður tekur ekki með í reikninginn).

45

Hvernig er visibility í lower levels þegar "cool dry air is moving over a warmer surface"?

Gott.
held að lykillinn hér sé að þetta er DRY og þegar þú injectar köldu lofti inn í neðra lag þá eykur þú stability.
En ættir þú þá ekki að hafa slæmt vis?

46

What cloud cover is typical for a wide warm sector of a polar front depression over Central Europe in the summer during daytime?
a) ST with drizzle
b) Fair weather CU

b) Fair weather CU
Hér er lykilatriðið að það er summer. Ef það væri vetur þá værir þú að sjá þoku og low stratus.

47

How does the activity of a cold front change when it has to cross a chain of mountains?

It strenthens "upwind" of the mountains.

48

Are the westerlies in the
a) mid-latitudes
b) subrtopical high pressure belt

a) mid-latitudes

49

When are the rainy seasons in Africa?

March to May
October to November

50

On which side of an easterly wave are thunderstorms most likely to develop?

On the east side of the wave.

51

The prevailing surface wind in the area of the west coast of Africa north of the equator (gulf of Guinea) is a __ ___ in summer and a __ ___ in winter

SW monsson, NE trade wind in winter

52

Farðu með climate svæðin frá miðbaugi og upp

0°- 10°: Tropical rain (equatorial)
10°-20°: Tropical transitional (Savannah)
20°-35°: Sub Tropical (Dry)
35°-40°: Temperate transitional (Mediterrenean)
40°-65°: Mid latitude ( disturbed temperate)
65°-90°: Polar climate (snow zone)

53

Hvað er annað nafn yfir svæðið" tropical rain"?

equatorial (0°-10°)

54

Hvað er annað nafn yfir svæðið "tropical transitional"?

Savannah (10°-20°)

55

Hvað er annað nafn yfir svæðið "Sub tropical"?

Dry (20°-35°)

56

Hvað er annað nafn yfir svæðið "Temperate transitional"?

Mediterrenean (35°-40°)

57

Hvað er annað nafn yfir svæðið "Mid latitude"

Disturbed temperate (40°-65°)

58

Hvað er annað nafn yfir svæðið "Snow zone"

Polar climate (65°-90°)