Chapter 20 - Upper Air Meteorology Flashcards Preview

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Flashcards in Chapter 20 - Upper Air Meteorology Deck (35):
1

42.34.2
Define: (a) contour line;

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2

42.34.2
Define: (b) thermal wind;

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3

42.34.2
Define: (c) isotherm;.

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4

42.34.4
State the information that can be obtained from spacing and orientation of contour
lines.

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5

42.34.6
Demonstrate proficiency in interpreting information contained on a contour chart.

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6

42.34.8
Explain the factors involved in determining a thermal wind.

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7

42.34.10
Explain why the wind at progressively higher altitudes in mid latitudes tends to become
westerly.

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8

42.34.12
Describe the vertical variation of pressure within low level: (a) depressions with a cold core;

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9

42.34.12
Describe the vertical variation of pressure within low level: (b) depressions with a warm core;

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10

42.34.12
Describe the vertical variation of pressure within low level: (c) anticyclones with a cold core;

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11

42.34.12
Describe the vertical variation of pressure within low level: (d) anticyclones with a warm core.

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12

42.34.14
State the characteristic slope (“lean”) of axis of cold depressions and warm
anticyclones with altitude in the southern hemisphere.

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13

42.34.16
Define “jet stream”.

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14

42.34.18
Describe the structure of a jet stream including explanations of wind shear and
turbulence.

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15

42.34.20
List the four principal jet streams located globally in the troposphere.

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16

42.34.22
Regarding the Southern Hemisphere polar jet stream, describe its: (a) association with fronts and thermal gradients;

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17

42.34.22
Regarding the Southern Hemisphere polar jet stream, describe its: (b) location relative to the frontal interface;

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18

42.34.22
Regarding the Southern Hemisphere polar jet stream, describe its: (c) usual, or typical, altitude;

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19

42.34.22
Regarding the Southern Hemisphere polar jet stream, describe its: (d) intensity and latitudinal location in winter compared to summer;

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20

42.34.22
Regarding the Southern Hemisphere polar jet stream, describe its: (e) preferred regions of turbulence.

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21

42.34.24
Regarding the Southern Hemisphere subtropical jet stream, describe/state: (a) the origin of its associated thermal gradient;

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22

42.34.24
Regarding the Southern Hemisphere subtropical jet stream, describe/state: (b) its location relative to the fractured tropopause;

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23

42.34.24
Regarding the Southern Hemisphere subtropical jet stream, describe/state: (c) its usual altitude;

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24

42.34.24
Regarding the Southern Hemisphere subtropical jet stream, describe/state: (d) the region where the strongest turbulence is generally found.

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25

42.34.26
State the season during which jet streams are more active as the result of differing
global thermal gradients.

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26

42.34.28
With respect to (clear air) turbulence associated with jet streams, describe or state the: (a) relationship between wind shear value and severity of turbulence;

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27

42.34.28
With respect to (clear air) turbulence associated with jet streams, describe or state the: (b) regions where clear air turbulence is likely to be found;

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28

42.34.28
With respect to (clear air) turbulence associated with jet streams, describe or state the: (c) effect on the severity of turbulence where mountain waves and jet stream
combine.

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29

42.34.30
With respect to cloud formations associated with jet streams, describe or state the type
of cloud commonly found on the: (a) warm side of the jet stream;

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30

42.34.30
With respect to cloud formations associated with jet streams, describe or state the type
of cloud commonly found on the: (b) cold side of the jet stream.

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31

42.34.32
Describe how a pilot can anticipate the location and altitude of jet streams, and what
telltale signs are often present in flight to locate a jet stream.

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32

42.34.34
With respect to polar and subtropical jet streams in both hemispheres, list their
locations and characteristics in terms of: (a) average wind velocity (direction and speed);

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33

42.34.34
With respect to polar and subtropical jet streams in both hemispheres, list their
locations and characteristics in terms of: (b) average pressure altitude;

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34

42.34.34
With respect to polar and subtropical jet streams in both hemispheres, list their
locations and characteristics in terms of: (c) typical maximum wind speed;

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35

42.34.34
With respect to polar and subtropical jet streams in both hemispheres, list their
locations and characteristics in terms of: (d) average latitudinal location.
Tropical Meteorology

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