Dr Kynes
Well-Known Member
the precession of the equinoxes has a LOT to do witth the climate, currently, at perahelion, the northern hemisphere is pointed at the sun, giving the north (earth's largest land masses) cool summers (summer solstice nearing aphelion) and warm winters (winter solstice approaching perahelion) on the orbital path.To my knowledge all pressecion does is move the position of the Sunrise/set slightly on solstice's (easiest to measure on solstice)
Now you could have picked any arbitrary value and do the same calculation ala any numerologist for no seeming reason
Until I can find a reference to what your talking about I'm staying reserved as I do not want to commit bad knowledge to memory
facts are very important
when the precession advances to the other side, with perahelion approaching the northern hemisphere's summer, we will have cooler winters and hotter summers.
naturally, this effect is reversed in the southern hemisphere, and the tropic wont notice any differences in their general climate.
BUUUUT.....
sunlight falling on mostly ocean gets stored as Heat Energy (ZOMG!! NOOO!!!), and sunlight falling on about 50/50 ocean and land reacts in complex ways.
peek at a globe and you will note, Plate Tectonics Be Racist! putting most of the land mass (outside the tropics) in the Northern Hemisphere.
the southern hemisphere remains MOSTLY (and in this case "mostly" actually means predominantly, a higher proportion of, approaching exclusivity) WATER so while the southern oceans get Hotter summers and Colder winters, making those lands less hospitable (That's Racist!), the southern hemisphere's current position in the precession also results in a gradual warming of the oceans, which in turn reduces the CO2 carrying capacity of the oceans, which in turn causes more greenhouse warming, which in turn causes the release of Moar Co2 from the Benthic Sink.
when the northern hemisphere (the Good hemisphere naturally, Damn you White People!!) has warm winters and cool summers, plants grow on the larger land area, corals grow faster in the overall shallower seas, and glaciations worldwide retreat.
if land area were more Equally Distributed (No Justice, No Peace! End Racist Continental Distribution!) then yes., the precession of the equinoxes would be largely a give and take, with far less dramatic results.
this is the essence of the milankovic cycle and it's effect on glaciations and climate (as i understand it).
DOER! yo, check this shit out!
http://profhorn.meteor.wisc.edu/wxwise/climate/earthorbit.html