The California trick - add hot area weather stations to the average over time, to cause fake "global warming" !

Actual average 

maximum temperature

thermometer data 

for California

shows no net change 

over the past century, 

prior to 2012, 

and then a huge, 

mysterious warming 

in the past six years

that makes no sense ! 

The  Chart  Below
is the California raw data
average maximum 
temperature vs. year
for 1900 to 2017:

The post 2012 heat spike
makes no sense 
because there are 
53 USHCN
weather stations 
in California, 
but only nine 
show warming 
since 2012, 
however

thirty-one 
stations 

show cooling 
since 2012  !
as shown in the chart below: 

The  chart  below 
is what NOAA claims

for California 
average maximum 
temperature
versus year:

Note the 
huge difference

between the 
1901 to 2000 trend  (flat) 

and the
1900 to 2017 trend  (rising): 

It seems that 
over time 
a "warming trend" 
had been caused
by adding four stations 
in hot areas to the 
state average.

The four 'hot stations' 
added over time, 
pushed the temperature up 
on the right side 
of the chart. 

Brawley was added in 1910, 
Blythe was added in 1913, 
Needles was added in 1940, and 
Death Valley was added in 1961. 

If those four stations 
are removed, 
then the California 
average maximum 
temperature 
shows no trend.



Below is a chart 
for California
average maximum
temperture vs. year,
with those four 
'hot' stations deleted:

Below is a
moving (GIF) chart 
for California average 
maximum temperature
comparing 'with and without' 
those four added 
weather stations: