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OCEA 90 > Module 2 > Flashcards

Module 2 Flashcards

1
Q

Because of its heat capacity the ocean acts as a buffer to prevent…

A

Large and rapid temperature changes

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2
Q

The orbit of the earth leads to…

A

Seasonal variations in distribution of incident solar radiation

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3
Q

North Pacific wintertime NH circulation

A

Aleutian Low

East Pacific High

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4
Q

North Atlantic wintertime NH circulation

A

Icelandic Low

Azores High

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5
Q

The two atmospheric teleconnection patterns in the Northern Hemisphere

A

Pacific Northern American (PNA) pattern

North Atlantic Oscillation (NAO) pattern

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6
Q

Seasonal variations of heating of earth’s surface due to…

A

Tilt of the earth axis of rotation and the orbit of the earth around the sun

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7
Q

Surface pressure distribution in the winter

A

High over land and low over the ocean

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8
Q

Surface pressure distribution in the summer

A

Low over land and high over the ocean

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9
Q

Storm tracks

A

Corridors along which storms tend to move in the North Pacific and the North Atlantic

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10
Q

Anomalies

A

Departures from the mean

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11
Q

Variations in Aleutian Low associated with…

A

PNA pattern

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12
Q

PNA Index

A

Amplitude of PNA pattern

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13
Q

The wintertime phase of the PNA pattern is strongly influenced by…

A

El Niño and La Niña

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14
Q

Positive phase of PNA favored during…

A

El Niño

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15
Q

Negative phase of PNA favored during…

A

La Niña

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16
Q

Variations in Icelandic Low and Azores High associated with…

A

NAO pattern

17
Q

NAO Index

A

Amplitude of the NAO pattern

18
Q

Does the atmosphere or ocean have more mass?

A

Ocean

19
Q

Aleutian Low in positive phase of PNA is…

A

Stronger than the mean

20
Q

Aleutian Low in negative phase of PNA is…

A

Weaker than the mean

21
Q

PNA pattern most active during…

A

Winter

22
Q

El Niño’s effect on ocean surface temperatures

A

Elevated

23
Q

La Niña’s effect on ocean surface temperatures

A

Cooler

24
Q

Positive phase of NAO

A

Stronger Icelandic Low and Azores High

25
Q

Negative phase of NAO

A

Weaker Icelandic Low and Azores High

26
Q

NAO phase influences transport of…

A

Saharan dust which contains iron

27
Q

Positive NAO winters

Evaporation vs Precipitation

A

Drier: Greenland, Canadian Arctic, southern Europe, the Mediterranean, and parts of Middle East

Wetter: Iceland through Scandanavia

OCEA 90 (5 decks)

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