Category Archives: AMO

On Muller et al (2013) “Decadal variations in the global atmospheric land temperatures”

Posted on June 18, 2013 by

I received an email yesterday morning advising me that Muller et al (2013) had been published. (Thanks, Marc.) The title of the paper is “Decadal variations in the global atmospheric land temperatures”. The abstract is here and a preprint version … Continue reading →

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Posted in AMO, Berkeley Earth Surface Temperature, ENSO, PDO | 66 Comments

How Long Will the Naturally Caused Drought Persist in the U.S.?

Posted on June 16, 2013 by

AND DOES THE UPCOMING NCADAC REPORT ADDRESS THE AMO’S INFLUENCE ON THE DROUGHT? Anthony Watts recently published a post about the current drought in the U.S. titled To NCDC: We Haven’t Seen an El Nino since 2009/10, What Do You … Continue reading →

Posted in AMO, Drought, NCADAC | 28 Comments

The AMO, Codfish, Seals and Fishermen

Posted on June 12, 2013 by

Only remotely related to climate change, but perhaps related to politics polluting universities, this essay floats ideas concerning our nations fisheries, and fishes for feedback from WUWT readers. Guest essay by Caleb Shaw When I was just a small child … Continue reading →

Posted in AMO, Oceans | Tagged | 185 Comments

Multidecadal Variations and Sea Surface Temperature Reconstructions

Posted on May 14, 2013 by

UPDATE: I’ve added a link at the end of the post for those interested in a copy of it in .pdf format. ########### OVERVIEW This is a somewhat lengthy blog post. There’s lots of information for newcomers, and there are … Continue reading →

Posted in AMO, ENSO, PDO, Sea Surface Temperature | 29 Comments

Trend To Colder Winters Continues in UK

Posted on March 23, 2013 by

Guest post by Paul Homewood http://www.metoffice.gov.uk/climate/uk/summaries/anomacts Figures released by the  Met Office show the UK mean temperature for the 2012/13 winter finishing at 3.31C. This is below the long term 1981-2010 average of 3.83C.

Posted in AMO | Tagged , , | 206 Comments

Why El Niño and not the AMO?

Posted on January 17, 2013 by

Guest Post by Willis Eschenbach On another thread, a poster got me thinking about the common practice of using the El Nino 3.4 Index to remove some of the variability from the historical global average surface temperature record. The theory, … Continue reading →

Posted in AMO, ENSO | Tagged , , , , , , , | 154 Comments

Tisdale: How Much of an Impact Does the Atlantic Multidecadal Oscillation Have on Arctic Sea Ice Extent?

Posted on September 24, 2012 by

Last week I asked Bob Tisdale to take a hard look at potential correlations between the AMO and Arctic sea ice extent, and he rose to the challenge – Anthony Guest post by Bob Tisdale This post presents reference graphs … Continue reading →

Posted in AMO, Arctic, Sea ice | Tagged , , , , | 79 Comments

Pat Michaels – on the death of credibility in the journal Nature

Posted on April 11, 2012 by

Atmospheric Aerosols and the Death of Nature Guest post by Dr. Patrick Michaels Big news last week was that new findings published in Nature magazine showed that human emissions of aerosols (primarily from fossil fuel use) have been largely responsible … Continue reading →

Posted in Aerosols, AMO, Peer review | Tagged , , , , , , , | 171 Comments

Mann and coining the AMO and claims of credit

Posted on March 8, 2012 by

Junkscience.com writes: Did Michael Mann falsely claim to coin a famous climate term actually coined by someone else? In Mann’s new book “The Hockey Stick and Climate Wars”, Mann writes: The multidecadal oscillation I’d helped discover would nonethless become a … Continue reading →

Posted in AMO, Michael E. Mann | Tagged , , , , , , , , | 64 Comments

Crowdsourced Climate Complexity – Compiling the WUWT Potential Climatic Variables Reference Page

Posted on February 19, 2012 by

By WUWT regular “Just The Facts” With the help of an array of WUWT reader comments, which began on this thread on January, 15th 2011, and grew on January 22nd, 2011, February 10th, 2011, February 28th, 2011, June 30th, 2011 … Continue reading →

Posted in AMO, Announcements, Antarctic, Arctic, Carbon dioxide, Carbon sequestration, Citizen science, Climate data, clouds, Cosmic rays, dust storms, Earth, Education, Energy, ENSO, Environment, feedbacks, flooding, Forecasting, geothermal energy, Global warming, hurricanes, Land use land cover change, lightning, measurement, Methane, Modeling, Oceans, PDO, Science, Sea ice, snowfall, Temperature, tornadoes, UHI, Weather | Tagged , , , , , , , , | 132 Comments

The Ridiculousness Continues – Climate Complexity Compiled

Posted on January 21, 2012 by

By WUWT regular “Just The Facts” With the help of an array of WUWT reader comments on this thread and several others documented within, I’ve been compiling a summary of all potential climatic variables in order to build a conceptual … Continue reading →

Posted in Aerosols, AMO, Antarctic, Arctic, Climate data, clouds, Cosmic rays, dust storms, Earth, Earthquakes, Energy, ENSO, feedbacks, geothermal energy, Gravity, hurricanes, Methane, Oceans, PDO, petroleum, Science, Sea ice, Snow, Solar, solar power, thorium power, tornadoes, wind power | Tagged , , , , , , , , , , | 266 Comments

The November AMO index goes negative, first time since 1996

Posted on December 9, 2011 by

Joe D’Aleo reports via email that the Atlantic Multidecadal Oscillation (AMO) Index has gone negative for this past month, see the graph below: Source:http://www.esrl.noaa.gov/psd/data/correlation/amon.us.data This is the first time the November value has been negative since about 1996. It appears … Continue reading →

Posted in AMO | Tagged , , , , , , , | 157 Comments

Hurricanes and Global Warming – Opinion by Chris Landsea

Posted on December 2, 2011 by

While I was looking into Chris Landsea’s recent activities, I came across a new essay that is a pleasant change of pace from the Climategate Emails. While it is definitely an opinion piece, and a wonderful example of how to … Continue reading →

Posted in Al Gore, AMO, Carbon dioxide, hurricanes, Methane, Michael E. Mann, Sea Surface Temperature | Tagged , | 65 Comments

Earth’s Climate System Is Ridiculously Complex – With Draft Link Tutorial

Posted on June 30, 2011 by

By WUWT regular “Just The Facts” I am often amused by claims that we understand Earth’s climate system, are able to accurately measure its behavior, eliminate all potential variables except CO2 as the primary driver of Earth’s temperature and make … Continue reading →

Posted in AMO, Antarctic, Arctic, Cosmic rays, Earth, Education, ENSO, Modeling, Oceans, Radiation, Rainfall, Sea ice | Tagged , , , , | 332 Comments

New WUWT Oceanic Oscillation Page – With Link Tutorial

Posted on May 30, 2011 by

Introducing WUWT’s newest addition, the Oceanic Oscillation Page, which includes graphs and graphics,on Oceanic Oscillations including the Pacific Decadal Oscillation (PDO), El Niño/La Niña and the Atlantic Multi-Decadal Oscillation (AMO). It was a struggle to find content for this page, … Continue reading →

Posted in AMO, Climate data, ENSO, measurement, Oceans, PDO, Uncategorized | Tagged , , , , , | 17 Comments

Arctic Cycles – AMO+PDO corresponds to Arctic station group

Posted on May 22, 2011 by

The following figure shows the AMO+PDO (black line above changed to red below) superimposed on the Arctic average annual temperature shown at the beginning of this document.

Posted in AMO, Arctic, PDO | Tagged | 68 Comments

Tisdale tasks Tamino

Posted on February 3, 2011 by

Comments On Tamino’s AMO Post by Bob Tisdale Tamino’s AMO post is a response to my post Removing The Effects of Natural Variables – Multiple Linear Regression-Based or “Eyeballed” Scaling Factors (hereinafter referred to as the “Removing” post). Tamino took … Continue reading →

Posted in AMO | Tagged , , , | 73 Comments

Atlantic reversal

Posted on November 4, 2010 by

From Eurekalert: Earth’s climate change 20,000 years ago reversed the circulation of the Atlantic Ocean Global warming today could have similar effects on ocean currents and could accelerate climate change The Atlantic Ocean circulation (termed meridional overturning circulation, MOC) is … Continue reading →

Posted in AMO, Oceans, Paleoclimatology | 80 Comments

The Atlantic Ocean via the AMO drives the apparent “Global Warming”

Posted on November 2, 2010 by

By Joseph D’Aleo, CCM The North Atlantic undergoes a multidecadal oscillation appropriately called the Atlantic Multidecadal Oscillation or AMO. It is officially the mean sea surface temperature anomaly from the equator to 70 degrees North. It went above the longer … Continue reading →

Posted in AMO | 121 Comments

Arctic Temperatures and Ice – Why it is Natural Variability

Posted on November 1, 2010 by

By Joe D’Aleo, CCM On October 21st the Associated Press hit the wires with a story entitled ”Sea Ice Melting as Arctic Temperatures Rise.” The temperatures in the arctic have indeed risen in recent years and ice has declined, bottoming … Continue reading →

Posted in AMO, Arctic, PDO | 66 Comments