dale blanker wrote:Please provide source references...
Lot's of folks have posted opinions about the Paris Agreement and/or climate change and that's fine but it would be more helpful if the source(s) of their data/conclusion were provided. There used to be a comprehensive analysis on climate change at epa.gov but I can't find it. I think it said that co2 levels have increased 50+% ppm monthly-average-wise compared to the last 800,000 years, caused mainly by fossil fuels. Does anyone recall this data?
y.
Current value of CO2 in the atmosphere:
https://www.co2.earth/ it shows 409 PPM From May.
Here is NASA's web page which has 406 PPM
https://climate.nasa.gov/vital-signs/carbon-dioxide/ from April.
So if you believe their data the CO2 has increased by 3 PPM in a month or .0003%
By the way 409 PPM equals .0409% Long time ago it was 4400 PPM (.4400%) and the Earth was around the same temperature. See below.
You will note the CO2 data is all taken from the top of Mona Loa Volcano in Hawaii
https://www.volcanodiscovery.com/maunaloa.html Volcano's emit gasses including CO2.
https://volcanoes.usgs.gov/vhp/gas.html
I have no information on why the CO2 measuring is done on top of an active volcano that emits CO2 and if this has any effect on the accuracy of the data from 1900 when it wasn't being measured there, as after all we are talking about very tiny amounts of CO2 in the first place.
Here is something on the history of CO2 in the atmosphere:
http://www.geocraft.com/WVFossils/last_400k_yrs.html
"Over the last 400,000 years the natural upper limit of atmospheric CO2 concentrations is assumed from the ice core data to be about 300 ppm. Other studies using proxy such as plant stomata, however, indicate this may closer to the average value, at least over the last 15,000 years. Today, CO2 concentrations worldwide average about 380 ppm. Compared to former geologic periods, concentrations of CO2 in our atmosphere are still very small and may not have a statistically measurable effect on global temperatures. For example, during the Ordovician Period 460 million years ago CO2 concentrations were 4400 ppm while temperatures then were about the same as they are today.
Do rising atmospheric CO2 concentrations cause increasing global temperatures, or could it be the other way around? This is one of the questions being debated today. Interestingly, CO2 lags an average of about 800 years behind the temperature changes-- confirming that CO2 is not the cause of the temperature increases. One thing is certain-- earth's climate has been warming and cooling on it's own for at least the last 400,000 years, as the data below show. At year 18,000 and counting in our current interglacial vacation from the Ice Age, we may be due-- some say overdue-- for return to another icehouse climate! "
Unfortunately if you remember the last eight years have been under Obama. Trump new budget reduces spending on Earth sciences to get NASA back to exploring space and not worrying about climate change.
https://www.usatoday.com/story/news/pol ... /99227378/ So there has been a lots of money and grants dumped on scientists to proving global warming is happening. Web sites or scientists with differing opinions are hard to find as they don't get any money from governments.
Don't forget the big gorilla in the room no one talks about: THE SUN
