



YR MON GLOBE NH SH TROPICS

2010 1 0.648 0.860 0.436 0.681

2010 2 0.603 0.720 0.486 0.791

2010 3 0.653 0.850 0.455 0.726

2010 4 0.501 0.799 0.203 0.633

2010 5 0.534 0.775 0.292 0.708

2010 6 0.436 0.550 0.323 0.476

2010 7 0.489 0.635 0.342 0.420

2010 8 0.511 0.674 0.347 0.364

2010 9 0.603 0.555 0.650 0.285

2010 10 0.426 0.370 0.482 0.156

2010 11 0.381 0.513 0.249 -0.071





The tropical tropospheric temperature anomaly for November continued its cooling trend, finally falling below the 1979-1998 average…but the global anomaly is still falling slowly:+0.38 deg. C for October November, 2010.

2010 is now in a dead heat with 1998 for warmest year, with the following averages through November:

1998 +0.538

2010 +0.526

December will determine the outcome, but remember that the difference between the two years is not statistically significant.

For comparison, here are the monthly anomalies for 1998:



YR MON GLOBE NH SH TROPICS

1998 1 0.582 0.612 0.552 1.097

1998 2 0.753 0.857 0.649 1.291

1998 3 0.528 0.655 0.401 1.025

1998 4 0.770 1.014 0.525 1.059

1998 5 0.645 0.685 0.606 0.885

1998 6 0.562 0.635 0.490 0.536

1998 7 0.510 0.659 0.362 0.442

1998 8 0.518 0.544 0.492 0.447

1998 9 0.458 0.571 0.345 0.312

1998 10 0.416 0.519 0.312 0.339

1998 11 0.192 0.272 0.113 0.130

1998 12 0.277 0.416 0.138 0.073



FOR THOSE TRACKING OUR DAILY TEMPERATURES: Since I’m getting many e-mails about quirks in the daily channel 5 temperature updates at the Discover website, here are a few tips to keep in mind:

1: The Discover website is an automated process and there is little quality control.

2. A few of the orbit files end up coming in several days late, in which case some day’s averages can be missing for several days. We fix it manually as time permits.

3: If a daily temperature difference between this year and last year is 100’s of degrees, it’s because one of the days has missing data. It’s not because we’ve been hacked by Earth First! Check out the text data…you’ll figure it out.

4. During spring there can be strong warming trends, and (as has happened in the last couple of weeks) in the fall there can be strong cooling trends. This is partly because the seasonal cycle has not been removed from the data. Click the “Average” box and “Redraw” to see how what’s happening compares to what’s normal for that time of year.

[note: These satellite measurements are not calibrated to surface thermometer data in any way, but instead use on-board redundant precision platinum resistance thermometers (PRTs) carried on the satellite radiometers. The PRT’s are individually calibrated in a laboratory before being installed in the instruments.]