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Earths Climate > Test 3 > Flashcards

Test 3 Flashcards

1
Q

isobars

A

are lines of equal pressure placed on a map to indicate areas of high and low pressure and how pressure changes from one location to another

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2
Q

CF is an apparent force

A

due to earths rotation=no real force is being applied

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3
Q

N. hemisphere

A

right

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4
Q

S. hemisphere

A

left

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5
Q

CF is at max at

A

the poles

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6
Q

CF is zero at

A

equator

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7
Q

CF is proportional to

A

the speed at the object being deflected-greater wind speed, greater deflection

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8
Q

on a homogeneous (all land or water), non rotating earth

A

H pressure would be at poles, and L pressure would be at equator

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9
Q

intertropical convergence zone (ITCZ)

A

convergence of surface air near the equator

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10
Q

*look over paper at wind belts and cells

A

*

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11
Q

geostrophic winds

A

PGF and CF act together balance

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12
Q

jet stream

A

greatest area of PGF causes a “river” of fast moving air

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13
Q

zonal

A

W to E geostropic winds

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14
Q

meriodional

A

N to S

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15
Q

friction reduces wind speed, lower wind speed=

A

=lower CF

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16
Q

cross-isobaric flow

A

PGF>CF

17
Q

*need to know where Gulf stream, canary current, cali current, peru/humbolt current

A

*

18
Q

Low pressure

A

converges at center, diverges aloft, upward motion, cyclonic flow

19
Q

high pressure

A

diverges at center, converges aloft, downward motion, anti cyclonic flow

20
Q

ocean currents are result of

A

coastline shapes and density differences

21
Q

thermohaline circulation

A

energy distribution mechanism, moves warmer surface pole-ward and colder bottom water equator-ward, driven by density differences in N Atlantic ocean

22
Q

El Nino

A

warming of Pacific ocean surface near coast of Peru in Dec, upwelling is decreased, trade winds less powerful

23
Q

La Nina

A

cooling, cycle of every 3-7 yrs, upwelling increased

24
Q

upwelling/downwelling

A

surface ocean currents “pile up” water or remove water along coastlines

25
Q

winter weather: la nina

A

variable polar jetstream, warmer/wetter

26
Q

winter weather: el nino

A

drier, colder, extended pacific jet stream

27
Q

spatial climatic variability is based on

A

energy/temp, humidity/precip, atmospheric/oceanic motion

28
Q

climate

A

temp and precip form simple bases of climate of location

29
Q

Koeppen system

A

based on mean monthly temp, mean monthly precip, and mean annual temp, but with vegetation distributions in mind

30
Q

Thornthwaite Classification

A

based on temp and effective precip-climatic water budget

Earths Climate (4 decks)

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