Global Cooling

For many years, scientists have been concerned about global warming.  And there certainly has been evidence of that.  But currently there is evidence of global cooling.  What is going on with our weather?  Is it warming or cooling?  Or both?

Even though greenhouse gas emissions have continued to increase, the global surface temperatures have not had a corresponding rise.  The “pause” in global warming since 1998 has little to do with greenhouse gases.

One of the problems with attributing climate change to greenhouse gases is that cooling or warming over decades generally are caused by the natural roller-coaster ride of weather cycles caused by ocean currents, increases in volcanic activity, and sun cycles.

For example El Nino and La Nina seem to have a more pronounced effect on weather patterns than greenhouse gases.  That is not to say that the greenhouse effect does not cause an increase in temperatures, but it indicates that internal variability of weather patterns can offset the warming of these gases.  Even the Atlantic multidecadel or Pacific decadel oscillations also have an impact on the climate.

Some models indicate that the ocean currents may be changing.   The Pacific Ocean seems to be locked in a cooling mode.  Of course, that could change, but right now we seem to be in a Global Cooling pattern rather than Global Warming.  It is likely that our normal climate patterns have been tilted back toward colder weather.  The Polar vortexes that originate in Siberia, crossing the Arctic Ocean, pushing past Canada all the way down to Florida may be more than anomalies.  The amount of snow and ice in past winters may portend more difficult winters ahead.

Mainstream scientists have been locked into debating whether there is global warming based on man-made emissions of CO2 into our environment.  This debate starts with the wrong premise.  The debate should be about what is contributing most to climate change?

Some scientists, who get little attention from the media, are saying that a major contributor to climate change is the sun.  The sun has cycles when the number of sun spots are decreasing, which typically triggers a colder period on earth.  Another group of scientists believe that there are cycles created by tectonic plate movement that cause more volcanic activity and earthquakes.  The volcanic eruptions can create a cooling effect by blanketing the world, blocking the sun.  Volcanic clouds will have much more of an impact on weather than CO2.

It is possible that the greenhouse gases did cause melting of freshwater which diluted salt water, thus causing a temporary global warming phase which is now leading into a global cooling phase.  The cooling could have been triggered by changing ocean currents which were disrupted by a sudden infusion of fresh water into our oceans.  However, focusing on reducing greenhouse gas emissions is not a good choice for us at this time.

We know that we are in between ice ages and will eventually return to another ice age, but our failure to understand the cycles, which may have little to do with greenhouse gases, might lead to poor preparation for the next ice age.  In other words, we may be wasting time debating greenhouse gas emissions, when we should simply recognize the cycle that currently appears to be leading to a colder period.  Then we should spend our time wisely preparing for the crop failures and other problems that are ahead.