Monthly Archives: April 2009

>UPDATE (September 14, 2010): The discussion of Figure 5 has been corrected. INITIAL NOTE The first version of this post (The Common Misunderstanding About The PDO dated June 26, 2008) incorrectly described the method for calculating the Atlantic Multidecadal Oscillation. … Continue reading →

>Figure 1 illustrates the NOAA Earth System Research Laboratory (ESRL) Atlantic Multidecadal Oscillation (AMO) dataset from 1856 to present, smoothed with a 37-month running-average filter. The ESRL AMO webpage is here:http://www.cdc.noaa.gov/data/timeseries/AMO/The unsmoothed AMO data is here:http://www.cdc.noaa.gov/data/correlation/amon.us.long.data http://i40.tinypic.com/2uqlw28.jpgFigure 1 I’ve recently … Continue reading →

>CORRECTION: The AMO discussion in this post has been corrected to reflect the discussion in The Atlantic Multidecadal Oscillation – Correcting My Mistake. NINO3.4 SST ANOMALY NINO3.4 SST anomalies have risen over the past few weeks. They’re no longer near … Continue reading →

>The time-series graph of the ERSST.v3b SST anomaly data for the Southern Ocean, Figure 1, is unique. It clearly shows that Southern Ocean SST anomalies were higher in the late 1800s than they were at their late 20th century peak. … Continue reading →

>INTRODUCTION In a comment in the March 2009 SST Anomaly Update thread, Blogger DB reminded me of the Bratcher and Giese (2002) paper “Tropical Pacific Decadal Variability and Global Warming” [GEOPHYSICAL RESEARCH LETTERS, VOL. 29, NO. 19, 1918, doi:10.1029/2002GL015191, 2002]. … Continue reading →

>CORRECTION: Figure 2 and its discussion has been corrected to reflect the discussion in The Atlantic Multidecadal Oscillation – Correcting My Mistake. The North Atlantic Residual is not the AMO. INTRODUCTION I first posted the ERSST.v3b version of global, hemispheric … Continue reading →

>CORRECTION: The AMO illustration and its description have been corrected to reflect the discussion in The Atlantic Multidecadal Oscillation – Correcting My Mistake. MONTHLY SST ANOMALY MAP The map of Global OI.v2 SST anomalies provided by NOMADS is shown below. … Continue reading →

>This post illustrates that the 1997/98 El Nino may have been fueled by a significant decrease in Total Cloud Amount over the tropical Pacific Ocean in the years (and decade) before the event. WHY LOOK AT TOTAL CLOUD AMOUNT? In … Continue reading →