Monthly Archives: April 2009

>Misunderstandings about the PDO – REVISED

Posted on April 27, 2009 by Bob Tisdale

>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 →

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>The Atlantic Multidecadal Oscillation – Correcting My Mistake

Posted on April 23, 2009 by Bob Tisdale

>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.jpg … Continue reading →

Posted in Atlantic Multidecadal Oscillation | 1 Comment

>Mid-April 2009 NINO3.4 SST Anomaly and AMO Update

Posted on April 20, 2009 by Bob Tisdale

>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 →

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>A Closer Look At The ERSST.v3b Southern Ocean Data

Posted on April 17, 2009 by Bob Tisdale

>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 →

Posted in SST Dataset Info, SST Update | 6 Comments

>Revisiting Bratcher and Giese (2002)

Posted on April 10, 2009 by Bob Tisdale

>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 →

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>Individual Ocean SST Anomalies In Perspective

Posted on April 8, 2009 by Bob Tisdale

>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. INTRODUCTIONI first posted the ERSST.v3b version of global, hemispheric and … Continue reading →

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>March 2009 SST Anomaly Update

Posted on April 2, 2009 by Bob Tisdale

>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 →

Posted in SST Update | 4 Comments

>Did A Decrease In Total Cloud Amount Fuel The 1997/98 El Nino?

Posted on April 1, 2009 by Bob Tisdale

>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 →

Posted in El Nino-La Nina Processes | 5 Comments