Earth’s climate
is the result of
atmospheric gases,
and water of the oceans,
interacting with each other,
and the
irregularly shaped land.
All placed into motion
by Earth’s rotation,
exposing them
to uneven warming
by energy from the sun.
Further complicated
by earth’s orbit
around the sun,
variation in the
axis of rotation,
variation in
the energy emitted
from the sun,
and energy received
by the Earth, from space.
The IPCC
attempts to explain
changes in this
complex system
with carbon dioxide,
a minor variable.
Clouds and water vapor
changes also
cause climate change.
El Niño Pacific Ocean
heat releases, for example,
put lots of water vapor
into the air, and
temperatures peak quickly,
then fall slowly,
as the moisture
drops out.
The El Nino influence
is strong in the Arctic,
where there is
little water vapor
in the atmosphere,
but not strong
in the dry Antarctic,
for unknown reasons.
Upper level cirrus clouds
may be unusually important.
They are thin wispy clouds
composed of ice crystals,
between 16,500 feet (5 km)
and 45,000 feet (8.5 km).
They can slow both incoming
and outgoing radiant energy.
In slowing
outgoing radiant energy,
they can have a significant
greenhouse effect,
causing the air to warm
below them.
A study by Clive Best
and Euan Mearns
showed
a strong correlation
between cloud cover
and surface temperatures
reported by
the Hadley Center
and the Climatic
Research Unit
(HADCRUT4)
from July 1983
to December 2008
with the corresponding
cloud cover data
from the International Satellite
Cloud Climatology Project
(ISCCP).
A decrease in
total cloud cover
(all clouds, not just cirrus clouds)
corresponded closely
with an increase
in temperatures.
The authors concluded:
"Natural cyclic change
in global cloud cover
has a greater impact
on the global
average temperatures
than CO2.
There is little evidence
of a direct
feedback relationship
between clouds and CO2.”
Natural global warming
could be caused by
small, natural fluctuations
in the circulation patterns
of the atmosphere
and ocean, that result in a
1% or 2% decrease
in global cloud cover.
Clouds are like
the Earth’s sunshade.
As usual, with real climate science,
the evidence is not strong enough
to make a definitive conclusion
about the causes of climate change.
about the causes of climate change.
But with the
well publicized
IPCC junk climate science,
CO2 is an evil gas,
every CO2 claim
is "95% certain"
and the science
is "settled".
Only junk science is
"certain" and "settled" !
And the
IPCC "science"
is certainly
junk science.
Joni Mitchell
"Both Sides Now"
video:
https://www.youtube.com/watch?v=Pbn6a0AFfnM
junk science.
Joni Mitchell
"Both Sides Now"
video:
https://www.youtube.com/watch?v=Pbn6a0AFfnM