Global Climate Change PPT

Question 1

IPCC

Answer 1

intergovernmental plane on climate change, established 1988, review scientific technical and socioeconomic information produced worldwide, also includes the UNEP and WMO

Question 2

natural causes for climate change

Answer 2

solar radiation variation, orbital variation, volcanism, plate tectonics

Question 3

human causes for climate change

Answer 3

long lived greenhouse gases (CO2, Methane, N2O), aerosols, land use

Question 4

solar radiation

Answer 4

sun is the fuel so changes in sun’s energy influences climate change, leads to either glaciation or interglaciation

Question 5

glaciation

Answer 5

relatively cold period when ice cover is extensive of earth’s surface

Question 6

interglaciation

Answer 6

relatively warm period when ice cover is more like the present time

Question 7

low solar radiation…

Answer 7

cold earth, large ice capt at the poles, lower sea-level

Question 8

high solar radiation…

Answer 8

warm earth, ice free/small poles, higher sea-level

Question 9

milankovich cycles

Answer 9

combined influences of astronomical, orbital factors that produce changes in earth’s climate, includes changes in eccentricity, obliquity, and precession

Question 10

eccentricity

Answer 10

shape of earth’s orbit changes every 100,000 years

Question 11

obliquity/tilt

Answer 11

changes over 41,000 years

Question 12

precession/wobble

Answer 12

changes over 26,000 year period

Question 13

how do we tell past climate?kjbjkjk

Answer 13

instrumental record, historical record, proxy record

Question 14

how do we predict the furture

Answer 14

reconstruct the past climate, monitor the present, predict the future based on patterns, cycles, and trends

Question 15

effects of anthropogenic climate change

Answer 15

rising sea levels, increase in severity of storms/hurricanes, effects on bio-diversity

Question 16

strategies for coping with global warming

Answer 16

plant trees, reduce greenhouse gas emissions (especially CO2), energy conservation, develop alternative energy sources, use carbon sequestration to scrub CO2 out of the atmosphere, direct geoengineering of the climate