From 1880 through 1970, the global
average temperature increased roughly 0.03 degrees Celsius each decade.
Not exact matches
Because the models predict little
average precipitation
increase nationwide over this period, the product of CAPE and precipitation gives about a 12 percent rise in cloud - to - ground lightning strikes per degree in the contiguous U.S., or a
roughly 50 percent
increase by 2100 if Earth sees the expected 4 - degree Celsius
increase (7 degrees Fahrenheit) in
temperature.
However, at the
increased levels seen since the Industrial Revolution (
roughly 275 ppm then, 400 ppm now; Figure 2 - 1), greenhouse gases are contributing to the rapid rise of our global
average temperatures by trapping more heat, often referred to as human - caused climate change.
The CMIP mean ECS is
roughly 3.0 and CMIP
average temperature forecast has been ~ 2x the observed temp
increase.
I found that the general belief is that the
average surface
temperature over the whole earth for a whole year has
increased from ~ 288 K to 288.8 K in
roughly 150 years, i.e. 0.3 % and that it is due to
increased CO2.
Third, in the absence of any feedbacks except for
temperature itself, doubling carbon dioxide would
increase the global
average surface
temperature by about 1.8 F. And fourth, global
temperatures have been rising for
roughly the past century and have so far
increased by about 1.4 F.
I don't know about apocalyptic, but people are noticing an
increase in the global
average annual
temperature that is
roughly 0.15 deg; C per decade so far.
Because the models predict little
average precipitation
increase nationwide over this period, the product of CAPE and precipitation gives about a 12 percent rise in cloud - to - ground lightning strikes per degree in the contiguous U.S., or a
roughly 50 percent
increase by 2100 if Earth sees the expected 4 - degree Celsius
increase (7 degrees Fahrenheit) in
temperature.
Internal conditions change, orbital forcing
roughly constant during (relatively brief) duration of YD, global
average temperature barely changes despite major albedo
increase, YD ends, deglaciation continues apace...
The CMIP mean ECS is
roughly 3.0 and CMIP
average temperature forecast has been ~ 2x the observed temp
increase.
The Berkeley Lab study found that global land surface
temperature decreased by a modest amount — an
average of
roughly 0.01 degrees Celsius, based on an albedo
increase of.003
averaged over all global land surfaces.