The lag between SST and TLT was discussed here, as it would seem to have important consequences when trying to estimate the overall climate feedback (and hence sensitivity) from surface temperatures. Here I present the estimates of lag time using the SST and 600mb AMSU data available from the UAH Discover website. The script is available here.
Anyhow, here is a plot of the daily anomalies:
Clearly, there is a lag between the peaks of SST and those of the atmospheric temperatures at the 600 mb layer, which is also confirmed with the chart below (as you might recall, 1-3 months was our estimate from TLT vs. SST, but at this layer it could be even close to 4 months):
For those interested in what these graphs would look like if we did not center based on daily values, and left the annual cycle in there instead, here’s what we get: