Wednesday, August 31, 2011

Obama’s Global Warming Briefing 1750-2099


By David G. Eselius

Mr. President, this briefing identifies the progress of global warming temperature increase and the very high probability that increased global warming greenhouse gases shall terminate all human life this century. The period of interest is 1750 to 2099.

Modern global temperature change is a reflection of past global interglacial periods and includes post industrial-age natural and human (anthropometric) global warming greenhouse gases additions. Earth will not relive its interglacial periods; a new global temperature increase is now established.

All current life forms exist resulting from Earth’s temperature excursions over the past 650,000 years. The Earth’s “wobble” (i.e., Milankovitch Cycle) and natural emissions of carbon dioxide (CO2) and methane (CH4) resulted in normal interglacial cycles.  Interglacial period temperature change (typically up to 1°C–1.5°C change over a long period) cycled about every 100,000 years.

About 20,000 years ago, Earth’s temperature was at a Ice Age low temperature.  Quickly (over about 20,000 years) Ice Age temperature moved to an expected high temperature. Reference: “650,000 year CO2, NH4, and Temperature” graph

Concentrations of carbon dioxide and methane were consistent with Earth’s 650,000 years of interglacial temperature changes. Concentrations of interglacial greenhouse gases levels were:
Carbon dioxide - between 180 ppm (interglacial low periods) and 280 ppm (interglacial high periods)  
Methane - interglacial methane levels changed between 350 ppb (interglacial low periods) and 700 ppb (interglacial high periods)

Since the 1750 start of the industrial period, concentrations of carbon dioxide and methane widely diverge from each other and also diverged from the standard interglacial temperature model.  

Current methane and carbon dioxide concentrations are significantly higher than interglacial global warming gas concentrations. Current greenhouse gas levels are:   
Carbon dioxide - July 2011 atmospheric CO2 is 392.4 ppm. Current carbon dioxide level is 40% greater than 650,000 years of historic carbon dioxide peak levels of 280 ppm.  
Methane – Level is 1,790 ppb. Current methane level is 156% greater than 650,000 years of historic methane peak levels of 700 ppb.

Natural methane venting has increased significantly while human carbon emission increases are significant.  The 20 year global warming potential (GWP) of methane is about 76 times that of carbon. Increasing natural methane has overtaken carbon as the most important greenhouse gas.  

Most existing Earth life forms will die from the extremes of global warming that are significantly above interglacial period temperatures.  Life forms do not quickly “adapt” when their more than 20 million year 1°C–1.5°C natural zone is violated.  

Now, Earth is at an interglacial temperature high, expecting to slowly move to the low of the typically 1°C-1.5°C excursion zone.  However, instead of moving to a standard interglacial low, Earth’s temperature is rapidly moving to new, not previously encountered temperature high, not seen for more than 20 million years.    

Due to a additional natural global warming greenhouse gas (methane and some carbon contribution), there has been an additional 0.8°C temperature rise above of Earth’s temperature recordings.  By ~2020, in both high and low carbon dioxide (CO2) emissions scenarios within the U.S. Southwest, the +2°C limit is exceeded. The “Southwest” temperature figure does not identify if both methane and carbon gases projections are used to calculate temperature rise.   Reference: Global Climate Change dot Gov Southwest

Since at least the 1960s, Earth’s modern global warming event was known to be occurring. For the last 50 years, the world leaders have done nothing to reduce human greenhouse gases that have released a methane “trigger” of modern global warming.  If any thing, world leaders remain counter productive to reducing greenhouse gas emissions.

Between now and 2050, it should be expected that global warming greenhouse gas temperature increase scenario is on the high side of the higher global warming emissions scenario. There is no evidence that global warming emissions will ever become a lower emissions scenario.

Continuing with current global warming temperature increase is a global suicide mission. By ~2050, temperature in the Southwest is 3.5°C to 5.5°C above interglacial high period temperatures. By ~2090, the Southwest is 7°C to 10.3°C above interglacial high period temperatures. Previously, the 650,000 year interglacial temperature excursion zone was only 1°C-1.5°C.  

Obviously, the expected typical global temperature increase between 2050 and 2099 destroys all human races.

Thank you Mr. President.