mt #2 Flashcards

1
Q

radiative forcing

A

measurement of the capacity of gas or other forcing agents to affect the energy balance

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2
Q

positive values of radiative forcing

A

results in the heating of the surface

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3
Q

negative values of radiative forcing

A

results in the cooling of the surface

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4
Q

decrease in stratospheric ozone is an example of an

A

anthropogenic forcing

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5
Q

aerosols

A

microscopic or liquid particles suspended in the atmosphere (size from about 0.01 to 10 micrometers) (e.g. dust, smoke, salt)

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6
Q

direct effect of aerosols

A
  • reflect shortwave radiation
  • absorb shortwave radiation
  • absorb longwave radiation
    NET cooling effect
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7
Q

indirect effects of aerosols

A
  • decrease in droplet size, brighter cloud

- reduced cloud droplet sizes, decrease in precipitation, longer lasting, thicker cloud

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8
Q

Natural Sources of Aerosols

A

land (dust), Ocean (salt), Volcanic eruptions (smoke)

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9
Q

Anthropogenic sources of Aerosols

A

factories, cars, power plants, deforestation

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10
Q

3 types of aerosols

A
  • sulfate
  • black carbon
  • organic carbon
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11
Q

Sulfate Aerosols

A
  • cooling, negative radiative forcing effect
  • natural source: volcanoes
  • Anthro source: burning of fossil fuels
  • 90% is anthropogenic
  • reflect solar radiation
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12
Q

Black Carbon Aerosols

A
  • warming effect
  • natural source: biomass burning (forest fires)
  • anthropogenic sources: incomplete combustion from coal diesel engines, biomass burning (deforestation)
  • elemental carbon/soot
  • absorbs solar radiation, low albedo
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13
Q

Organic carbon

A
  • cooling effect
  • natural source: biomass burning
  • anthropogenic source: fossil fuel burning, deforestation
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14
Q

climate model

A

a mathematical representation of the physical processes that control climate

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15
Q

factors effecting emissions

A
  • global population
  • energy generation
  • economic growth
  • type of economy
  • cooperation among countries
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16
Q

RCP

A

representative concentration pathways

17
Q

mitigation scenario

A

RCP 2.6: low forcing level. radiative forcing peaks and declines by 2100

18
Q

stabilization scenarios

A

RCP 4.5 and RCP 6.0: for RCP 4.5, radiative forcing stabilizes by 2100
for RCP6, radiate forcing does not peak by 2100

19
Q

High GHG emissions scenarios

A

RCP8.5: Radiative forcing does not peak by 2100

20
Q

Climate models, use past or present do test?

A

past

21
Q

Does land or sea surface temperature increase more? why?

A

Land because water reflects more solar radiation, while land retains more heat.

22
Q

Climate changes in Cali

A
  • Coastal Danger
  • bad air days
  • droughts and wildfires
  • spreading diseases
  • loss of native fish
23
Q

Negative of groundwater pumping

A

is we pull out the water, this would cause the land to sink

24
Q

atmospheric rivers

A

narrow jets of very humid air that normally originate in the warm subtropical Pacific Ocean

25
Q

valley fever

A

fatal disease caused by inhaling microscopic spores of soil dwelling fungus

26
Q

3 step framework for climate change solutions

A

reduce emission sources, support ghgs sinks, improve society

27
Q

one time actions

A

buying an energy efficient car

changing to led lights

28
Q

behavioral changes

A

recycling, take shorter showers, taking public transit instead of a car

29
Q

baseline

A

amount of energy intended to satisfy an avg customer’s electricity needs in a given area

30
Q

food miles

A

number of miles (km) that food is transported from origin to your mouth

31
Q

food energy efficiency

A

inputfossilenergy/calories

32
Q

four methods for CO2 storage

A
  • diversion into industrial processes
  • conversion to mineral carbonates
  • pumping into deep ocean
  • (BEST) burial in deep geological formations
33
Q

negatives to deep ocean CO2 storage

A
  • interfere with aerobic respiration
  • may prove toxic to certain organisms
  • dissolution into carbonate and bicorbnate forms would acidify seawater
34
Q

where to do co2 burial in geological formations

A
  • depleted or natural gas fields
  • deep coal seams
  • saline formation
  • cons: costly
35
Q

mitigation

A

action taken to halt or decrease environmental impact of a particular action

36
Q

adaptation

A

a change of the process of change by which an organism or species becomes better suited to the environment