By David G. Eselius
The U.S. Global Change Research Program (USGCRP), in accordance with the Global Change Research Act of 1990, is conducting the National Climate Assessment (NCA) that evaluates, integrates and interprets the findings of the $2.6 billion USGCRP assessments every four years.
The Act requires a report to the President and the Congress. Previous assessments were completed in 2000 and 2009. Final reports are available on the USGCRP website. Reference: USGCRP website LINK: http://www.globalchange.gov/
In reviewing Assessment "Global Climate Change Impacts in the US" (2009) it appears that there is inadequate reporting of the 650,000 years of interglacial period that is the foundation of Earth's existing climate system, and post 1750 Industrial Age global warming temperature change. Reference: USGCRP "Global Climate Change Impacts in the US” (2009) LINK: http://www.globalchange.gov/what-we-do/assessment/previous-assessments/global-climate-change-impacts-in-the-us-2009
Interglacial and global temperature-regulation reference information is available at Blogger Global Warming 2050-2099:
A key finding within USGCRP assessment is that global climate change has increased over the past 50 years. Reported is that this observed change is due primarily to human-induced emissions of heat-trapping gases.
In fact, human-induced greenhouse gas emissions are a significant forcing gas that exceeded a temperature “tripping” point for emissions of methane (CH4). Nether the less, regulating post 1750 Industrial Age human-induced greenhouse gas emissions is the only global temperature regulation technique that can help reduce global warming temperature increase.
Methane (CH4), and to a lesser extent carbon dioxide (CO2), is the gas that regulates global warming.
Natural Temperature Regulation - Natural release of stored methane is the driving force of interglacial temperature periods. Earth’s cycle of temperatures occur about every 100,000 years for more than 20 million years. Reference: “650,000 year CO2, NH4, and Temperature” graph LINK: http://www.realclimate.org/epica.jpg%20%20
Current ice-core methane content is well above the normal temperature cycle. Methane (CH4) is now at ~1,790 ppb and is 156% greater than 650,000 years of historic interglacial CH4 peak levels of 700 ppb and with 350 ppb at interglacial low periods. Current ice-core carbon dioxide (CO2) level is only 40% greater than 650,000 years of historic high CO2 peak levels of 280 ppm. Methane has a global warming potential (GWP) that is 72 times grater than that of carbon dioxide.
There are vast (or huge) stores of methane in the oceans and North/South Polar Regions that are part of global interglacial carbon-cycle sinks and sources.
This change of methane’s global warming roll to that of primary global warming temperature-regulation gas identifies methane as a major component of global warming (aka, climate change).
The U.S. Global Change Research Program (USGCRP), in accordance with the Global Change Research Act of 1990, is conducting the National Climate Assessment (NCA) that evaluates, integrates and interprets the findings of the $2.6 billion USGCRP assessments every four years.
The Act requires a report to the President and the Congress. Previous assessments were completed in 2000 and 2009. Final reports are available on the USGCRP website. Reference: USGCRP website LINK: http://www.globalchange.gov/
In reviewing Assessment "Global Climate Change Impacts in the US" (2009) it appears that there is inadequate reporting of the 650,000 years of interglacial period that is the foundation of Earth's existing climate system, and post 1750 Industrial Age global warming temperature change. Reference: USGCRP "Global Climate Change Impacts in the US” (2009) LINK: http://www.globalchange.gov/what-we-do/assessment/previous-assessments/global-climate-change-impacts-in-the-us-2009
Interglacial and global temperature-regulation reference information is available at Blogger Global Warming 2050-2099:
● Blogger "Obama’s Global Warming Briefing - Preindustrial Age," AUGUST 29, 2011
● Blogger "Obama’s Global Warming Briefing 1750-2099," AUGUST 31, 2011
A key finding within USGCRP assessment is that global climate change has increased over the past 50 years. Reported is that this observed change is due primarily to human-induced emissions of heat-trapping gases.
In fact, human-induced greenhouse gas emissions are a significant forcing gas that exceeded a temperature “tripping” point for emissions of methane (CH4). Nether the less, regulating post 1750 Industrial Age human-induced greenhouse gas emissions is the only global temperature regulation technique that can help reduce global warming temperature increase.
Methane (CH4), and to a lesser extent carbon dioxide (CO2), is the gas that regulates global warming.
Natural Temperature Regulation - Natural release of stored methane is the driving force of interglacial temperature periods. Earth’s cycle of temperatures occur about every 100,000 years for more than 20 million years. Reference: “650,000 year CO2, NH4, and Temperature” graph LINK: http://www.realclimate.org/epica.jpg%20%20
Current ice-core methane content is well above the normal temperature cycle. Methane (CH4) is now at ~1,790 ppb and is 156% greater than 650,000 years of historic interglacial CH4 peak levels of 700 ppb and with 350 ppb at interglacial low periods. Current ice-core carbon dioxide (CO2) level is only 40% greater than 650,000 years of historic high CO2 peak levels of 280 ppm. Methane has a global warming potential (GWP) that is 72 times grater than that of carbon dioxide.
There are vast (or huge) stores of methane in the oceans and North/South Polar Regions that are part of global interglacial carbon-cycle sinks and sources.
This change of methane’s global warming roll to that of primary global warming temperature-regulation gas identifies methane as a major component of global warming (aka, climate change).
