GEOG110 Flashcards
name three examples of climatic hazards
forest fire, tornadoes, hurricanes
name two ways climate can affect health
west nile virus and lyme disease
between what time was the little ice age
1500 to 1850 AD
between what time was the medieval climatic optimum
1100 to 1450 AD
dendrocilmatology
tree rings
palynology
pollen
geomorphology
landforms
limnology
lake sediments
name two things that are occurring with recent climate change
world is warming on average, but cooler in some areas
precipitation is increasing, but the subtropics are getting dryer
name five climatic variables
temperature, precipitation, humidity, wind speed, cloudiness
Earth’s Axial tily
23.5 degrees
What do we call long scale axial changes?
Milankovitch
what do we call a change in the timing of seasons and how often does this occur
precession and about 20k years
how often does the eccentricity of earth’s orbit change
100k years
how often does axial tilt change
40k years
how many milankovitchs must be in phase for a glacial/interglacial period to be in effect
at least 2
why is the semi annual CO2 dominated by the NH
there are many forests on its higher amount of land mass
what is the latitude heat imbalance
the move of energy from equator to poles. 60% through atmosphere and 40 % through ocean current
DTR?
diurnal temperature range
stefan-boltzman’s law
the sun is warmer than the earth and therefore it heats the earth
wien’s law
the wavelength emission from the sun is shorter than the earth’s atmosphere
kirchoff’s law
the sun is a blackbody and the earth is a grey body
-the sun emits at all wavelengths and the earth absorbs short and emits long
earth’s atmosphere attenuates short wave radiation by
reflection, scattering, and absorpotion
earth’s atmosphere attenuates long wave radiation by
absorption through greenhouse gases and clouds
earth’s average albedo
30%
latent heating
moist convection
sensible heating
dry convection
bowen ratio and what does it mean
it is used to use the energy budget equation to see if a climate is moist or dry - above one is dry below one is moist
positive q means
temps moving from surface to air or soil
where and when does the greatest evaporation rates occur?
over oceans east of continents during the winter
