GLOBAL WARMING AND EXTREME WEATHER EVENTS
NOTE: These questions follow, with permission, the March 2012 Yale Project on Climate Change Communication poll of public opinion on Global Warming and Extreme Weather Events.
How strongly do you agree or disagree with the following statement? Global warming is affecting the weather in the United States.
Some people say that global warming made each of the following events worse. How much do you agree or disagree?
Mississippi River floods in the spring of 2011
The drought in Texas and Oklahoma in 2011
Record high summer temperatures in the U.S. in 2011
BLACK CARBON AND METHANE
Relative to current levels, will black carbon emissions (including wildfires) from the United States for the year 2030 increase, remain about the same, or decrease?
Relative to current levels, will black carbon emissions (including wildfires) from the China for the year 2030 increase, remain about the same, or decrease?
The IPCC Fourth Assessment Report (2007) adopts an estimate for black carbon (BC) on snow radiative forcing (RF) of +0.10 ± 0.10 W m–2. In your opinion, is BC on snow RF in recent years likely to be in the upper, middle or lower bound of the IPCC range?
What effect will emissions from human activity between now and the year 2100 have on methane (CH4) concentration in the atmosphere?
What effect will emissions from thawing permafrost between now and the year 2100 have on methane (CH4) concentration in the atmosphere?
GLOBAL WARMING AND HUMAN ACTIVITY
How large a contribution has human activity made to the increase in global average air and ocean temperatures since the start of the 20th century?