disgracedfish

Why did the WMO chose the 30 years between 1961-1990 as the Climate Normal Period?

Was there are particular reason, such as the spatial coverage of data being better for that time period? Or was it just arbitrary?

Also, did the Climate Normal Period 'flip' to 1971-2000 when we entered the 21st century?

Why did the WMO chose the 30 years between 1961-1990 as the Climate Normal Period?

Was there are particular reason, such as the spatial coverage of data being better for that time period? Or was it just arbitrary?

Also, did the Climate Normal Period 'flip' to 1971-2000 when we entered the 21st century?

What's the cause of this cycle? Natural cycles don't just "happen", they have to have a cause.

And before you answer, keep in mind that the sun is NOT the cause. Much to the chagrin of many "sceptics", the sun is monitored very closely and is not the cause of the current climate shift. The sun may contribute to the warming, but it is not the cause. See chart linked below for the modeled trend and the variations in the major forcings that contributed to 20th century climate.

http://en.wikipedia.org/wiki/Image:Climate_Change_...

Sea level is about 6.4*10^6 meters from the center of Earth.

A particle of mass m is released from rest a distance b from a fixed origin of force that attracts a particle according to the inverse square law:

F(x) = -kx-2

Show that the time required for the particle to reach the origin is:

π(mb3/8k)1/2