While we have one blog post that shows OHC disappearing due to an adjustment by KNMI, Ocean Heat Content: cooling gone today with new adjustment, global sea surface temperatures are telling another story. That story is that our trend is down since 2002. You wouldn’t know it though to look at this NOAA chart.
Dr. Roy Spencer provides an update.
Since the global average sea surface temperature (SST) anomalies (departures from average) hit a peak a couple of months ago, I thought it would be a good time to see how they are progressing. Here’s a plot of running 11-day SST anomalies for the global oceans (60N to 60S latitude):
As can be seen, at least for the time being, temperatures have returned to the long-term average. Of course, this says nothing about what will happen in the future. I have also plotted the linear trend line, which is for entertainment purposes only.
The SSTs come from the AMSR-E instrument on NASA’s Aqua satellite, and are computed and archived at Remote Sensing Systems (Frank Wentz). I believe them to be the most precise record of subtle SST changes available, albeit only since mid-2002.