GHC 12: Climate Change Flashcards Preview

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Flashcards in GHC 12: Climate Change Deck (23):
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Aerosols

A suspension of find a solid or liquid particles in the air.

1

Drought

A prolonged interval of dryness causing damage to plants and animals.

2

El Niño

A climate pattern that occurs every 2 to 7 years when the Tradewinds relax and warm ocean water in the equatorial Pacific ocean flows to the west coast of North America.

3

Extinction

The die-off or elimination of the species.

4

Global climate model (GCM)

A three- and four-dimensional computer model of Earth's atmosphere that simulates global climate produced by varying temperature, rainfall, atmospheric pressure, winds, and ocean currents.

5

Global warming potential (GWP)

The ability of a greenhouse gas to trap heat in the atmosphere as compared to CO2.

6

Haboob

Strong duststorms powered by thunderstorm downburst in desert regions of the world.

7

Haze

Fine dust, smoke, water, and salt particles that reduce the clarity of the atmosphere.

8

La Nada

A climate pattern that occurs when seawater temperatures in the tropical eastern Pacific ocean are neither excessively warm or cool but neutral.

9

La Niña

A climate pattern that occurs when cooler than normal seawater exists in the tropical eastern Pacific Ocean.

10

Little Ice Age

A colder interval between about 1400 and 1900 CE marked by renewed glaciation in the Northern Hemisphere.

11

Maunder Minimum

A cooler interval that occurred between 1645 and 1715 CE when astronomers noted minimal sunspots on the Sun's surface.

12

Medieval Maximum

A relatively warm interval in the Northern Hemisphere between about 1000 and 1300 CE.

13

Methane

A gaseous hydrocarbon (CH4).

14

Methane hydrate

An icelike deposit in deep-sea sediments of methane combined with near-freezing water.

15

Milankovitch theory

Glacial advances and retreats on earth are controlled by variations in the amount of solar radiation received at high latitudes during summer due to changes in Earth's orbit around the sun and in the tilt angle and direction of Earth's axis of rotation.

16

Ozone

A gaseous molecule composed of three atoms of oxygen.

17

Pacific Decadal Oscillation (PDO)

A 20- to 30-year long climate pattern in North America influenced by sea surface temperatures in the mid-latitudes of the North Pacific ocean. Warm phases bring increased storminess.

18

Radiative forcing

Changes in energy flow in and out of earth atmosphere measured in watts per meter squared.

19

Sunspot

A dark area in the sun's surface with below-average temperature

20

Tipping point

The point at which long-term small changes suddenly produce large effects.

21

Where has all the CO2 in the early Earth's atmosphere gone?

About 80% of that CO2 is now chemically tied up in limestone.

22

Why was the Earth so hot?

More CO2 means stronger greenhouse effect.