The UN's
Intergovernmental Panel
on Climate Change (IPCC)
claims the global warming
since 1975
is unprecedented
in the past millennium,
and man made.
Those two
unproven assertions
are the IPCC 'foundation'
for the claim that
climate change crisis
is in progress.
The IPCC foundation
is a house of cards.
Hundreds of peer-reviewed papers
have presented evidence to show
temperatures of the past several decades
are not unusual, or unprecedented.
In fact, the so-called
man made warming period
from 1975 to 2003,
was very similar
to the prior warming period
from 1910 to 1943,
NOT claimed to be man made.
The IPCC’s assertions,
and demonization of CO2,
are based on very little science.
Earth’s climate
has cooled and warmed
over 4.5 billion years,
independent of
the CO2 level.
Land surface-based
temperature measurements
have a significant warming bias
due to insufficient corrections
for the urban heat island effect
(caused by economic growth in the
vicinity of surface thermometers).
Among potential surface temperature
errors are:
-- A changing environment
around measurement sites,
-- Long-term degradation
of the shelters
that house the equipment,
such as the shelters’ white paint
becoming less reflective,
-- Changes in what
is being measured,
such as daily maximum
and minimum temperatures
or temperatures at
specified times of day,
-- Changes in measurement devices,
-- Changes in access to the devices,
such as the change from having to open
the shelter door to read the temperature,
to automatic data recording,
-- Many station closures over time, and
-- Difficulty in measuring
the ocean surface temperature.
Since 1979, weather satellite
microwave-sounding-unit
temperature records
have shown less warming
when compared with
surface measurements.
The weather-balloon
temperature records,
since the 1940s,
also shows less warming
than surface measurements.
Satellite data and
weather balloon data
correlate well
-- but the surface data
show more warming
and global warmunists love that,
so they don't care if surface data
do not correlate with
the two other methodologies,
( more warming is
why the surface data
are the only temperature
data used by the IPCC ).
Surface data show a long, irregular
cool period between 1860 and 1910,
warming between 1910 and 1943,
a small amount of cooling from 1943 to 1975,
significant warming from 1975 to 2003,
a flat trend from 2003 to mid-2015, and
a warming spike from an El Nino
natural heat release,
from the Pacific Ocean,
in late 2015 and early 2016,
that is unrelated
to greenhouse gases ...
and no obvious trend since then.
The greater release of greenhouse gases
since 1975 has not produced a warming
any larger than the one in the early part
of the same century,
when greenhouse gas emissions
were about 90% lower.
Large differences between
climate model projections and
data observations,
clearly falsifies the models.
The IPCC ignores this real science
and continues using the "models".
One greenhouse gas "fingerprint"
would be that surface warming
is only about 30% to 50%
of the warming observed
by balloons & satellites
in the troposphere.
But, in fact, surface warming
is claimed to be greater
than troposphere warming !
That makes no sense,
and means there's
something very wrong with
surface temperature data.