Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

MET 2 > Chapter 2 > Flashcards

Chapter 2 Flashcards

(69 cards)

Start Studying
1
Q

Baroclinic

A

moving weather systems which possess temperature advection within themselves, continental features are naturally baroclinic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Fronts

A

transition zone or boundary between 2 air masses. main indicators of a front existence are temperature and moisture contrat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

cold front

A

leading edge of a cold baroclinic air mass, behind the front,, drawn as solid blue line with blue triangular pips,

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

difference between active and inactive cold fronts

A

speed of movement and where weather is occuring. fast moving cold front is inactive slow is moving cold front

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Warm Front

A

trailing edge of a cold baroclinic air mass, warm air behind front and cold air ahead, solid red line with red semi-circle pips

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

pips

A

indicate direction front is moving

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

stationary front

A

lateral edge of cold baroclinic air mass, cold is poleward warm is equatorward, depicted with alternating solid red and blue line with alternating red and blue pips. red pips point poleward blue pip points equatorward

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Occluded front

A

occurs when cold front moves faster than warm front and overtakes it.. solid purple line wit alternating triangular and half-circle pips.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

warm occlusion

A

air head of warm front is colder than air behind occluded front, cold is opposite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Where warm/cold occlusion found

A

Warm=west coasts of continents, East= east coasts of continents

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Triple point

A

intersection of warm, cold and occluded fronts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

-genesis

A

formation of intensification of a weather feature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

cyclogenesis

A

formation or deepening of a low center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

anticyclogenesis

A

formation or building of a high cennter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

frontogenesis

A

formation or increasing contrast of a front

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

-olysis

A

dissipation or weakening of weather feature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Cyclolysis

A

dissipation or filling of a low center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

anticyclolysis

A

dissipation or weakening of a high center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Frontolysis

A

dissipation or decreasing contrast of a front

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

diurnal effects

A

modification of a feature due to changes in insolation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

daylight heating

A

increases insolation so warm features strengthen and cold features weaken

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

nighttime cooling

A

decreases insolation so warm features will weaken and cold features will strengthen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Diabatic effects

A

modification of a feature due to conduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Land warrmer than water

A

warm features over land will strengthen and cold features over land will weaken

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
water warmer than land
warm features over the water will strengthen and cold features over water will weaken
26
Jet maximum-upper air feature
seperated into 4 quadrants
27
left and right front quadrants
convergence aloft and negative vorticity advection
28
in left front and right rear quadrants
there is divergence and poiitive vorticity advection
29
Major short-wave troughs-upper air feature
elongated areas of cyclonic curvature and lower heights | perpendicular to jet axis at 25knots
30
behind the trough, whats happening
cold air advection, convergence and downward vertical motion
31
3factors that can directly impact intensities of short-wave troughs
Thermal advection, convergence/divergence and location in long-wave pattern
32
deepening
amplitude of trough increases
33
If short-wave trough moves into long-wave through axes what will happen
short-wave trough will deepen due to increased cyclonic curvature in long-wave trough
34
Filling
amplitude of a trough decreases
35
If trough moves into a long-wave edge
associated cyclonic curvature will decrease and anticyclonic curvature will increase causing trough to fill
36
Major short-wave ridge-upper air feature
elongated areas of ati-cyclonic curvature and higher heights, perpendicular to jet axis
37
Behind the ridge what is occuring
Warm air advection, divergence, and upward vertical motion
38
Upper-level ridges are enhanced by
warm air
39
Building
amplitude of ridge increases
40
What happpens if short-wave ridge moves into long-wave ridge axus
increased anticyclonic shear will help short-wave ridge build, if ridges builds, amplitude increases and speed of movement slows
41
Weakening
when amplitude of ridge decreases
42
To weaken a major short-wave ridge
bring CAA into west side of axis, this causes heights to fall. Divergence aloft will weaken it by removing mass from ridge faster than it being put in
43
If short-wave ridge moves into long-wave trough
anticyclonic curvature will decreases as cyclonic curvature starts to increase causing the ridge to weaken,
44
what happens when short-wave ridge weakens
decrease in amplitude and speed up
45
Baroclinic high- surface feature
anticyclogenesis
46
Anticyclogenesis
formation of new high or intensification of existing high, occurs as result of damper effect.
47
where is surface high formed
areas were there is significant upper-level convergence, adds mass to column of air increasing surface pressure
48
any upper-level convergence must be what
stronger than any lower-level divergence in order to do this,
49
In anticyclogenis, adiabatic cooling
air cools, it subsides or sinks. which adds pressure to surface pressure, building surface high, resulting in anticyclogenesis
50
anricyclogenesis creates
continental polar and maritime polar
51
when air is cold
it cant hold much moisture
52
cP air mass(Winter)
very strong high pressure in winter,
53
cP air mass(summer)
excellent with only scattered cumulus clouds ad good vicibilities.
54
Maritime polar
regions are cold unfrozen ocean areas
55
mP (winter)
bring low clouds and rain showers to coastal and inland areas with heavier precipitation occuring on windward side of north south mountain ranges
56
mP(summertime)
responsible fr coastal fog and stratus
57
Intensity changes within high pressure system are based on what?
amplitude changes of ridge,
58
If ridge builds expect
surface high to undergo anticyclogensis
59
if ridge weakens expect
surface high undergo anticyclolysis
60
best place for anticylogenesis to occur
downstream of long-wave ridge, as it moves southeast towards the strongest CAA
61
Air mass modification
when something begins to change or has changed in its characteristics, main properties undergo changes- temperature and moisture
62
When air mass moves out of its source region
it undergoes modicication. Temperature will modify through process of conduction while moisture conent modifies through evaporation or precipitation
63
Continental polar(cP)
cold dry air moving over warmer surface is warmed from below, indicates decreasing stability in low levels
64
If air mass moves over water
it will gain moiuster through evaporation and annd come moore unstable
65
if Maritime polar(mP) moves out of its source region over cold dry surface
it will become more stable , air will lose heat, cold air will sink and air mass increases in stability. Air mass will also lose moisture through precipitation; the drink air will sink and air mass will become more stable
66
cP and mP move towards where
the equator
67
continental polar air mass will modify more________ than maritime
quickly
68
anticyclolysis nd the primary cause
weakening or dissipation of a high or ridge, cause is loss of upper-level support.
69
Cyclogenesis
result of chimney effect and caused by divergence aloft which removes mass from column of air

MET 2 (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions