Bottom line: it is improper and incompetent to connect multiple, separate data sets together and anyone doing it should receive remedial education if not fired outright.
The comics by XKCD and Josh (in WUWT), bring to the front an issue of lack of skill by government paid scientists. When I Founded and Directed the Research Lab for Intel, this was one of the huge problems I had to address with the personnel: they focused on "what they wanted to show" rather than "good science".
This is a very small subsection of so VOSTOK data I pulled down.
VOSTOK Data
depth |
ice_age |
delta D |
dust |
gas_age |
CO2 |
CH4 |
m |
ka |
permille |
10-9cm3g-1 |
ka |
ppmv |
ppbv |
130 |
4.26 |
-438.94 |
6.58 |
1.9 |
274 |
|
140 |
4.66 |
-435.94 |
12.42 |
2.28 |
273.07 |
|
150 |
5.06 |
-439.72 |
11 |
2.66 |
272.14 |
666.93 |
160 |
5.45 |
-441.88 |
7.47 |
3.04 |
271.22 |
653.54 |
The "error/uncertainty" in the data has the following:
The key things to note are
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