Useful comparison of ENSO and (supposed) CO2 influences on climate by kenskingdom. ENSO correlations look significant, whereas CO2 – nothing to report really.
H/T Climate Depot
In this post I use the Multivariate ENSO Index (MEI) supplied by NOAA at http://www.esrl.noaa.gov/psd/enso/mei/index.html and lower tropospheric temperature data supplied by UAH to show how much of temperature variation over the past 20 years is due to ENSO and how little is due to CO2. I will keep words brief and let graphics do the talking.
Firstly, here is the MEI data from 1950:
Fig. 1: Monthly MEI from 1950
As an aside, this is how it compares with SOI data. The SOI is inverted and both are scaled for comparison.
Fig. 2: MEI compared with SOI inverted
Now compare scaled MEI with Global UAH:
Fig. 3: MEI (scaled) and UAH
Notice tropospheric temperatures appear to lag the MEI by some 5 months:
Fig. 4: MEI advanced 5 months and UAH
Notice both datasets are noisy, and there is a clear discrepancy in the early 1990s. 12 month running…
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