Archives par mot-clé : CO2

THE COP21 AGREEMENT – JUST THE FACTS, PLEASE

by Robert Lyman, June9, 2017 in FriendsOfScienceCalgary


French version here

Each country is committed “to prepare and maintain successive individual nationally determined contributions (INDCs) that it intends to achieve”, to update these plans every five years and to pursue and report on the related domestic emission reduction measures. After three years, a Party may withdraw from the Agreement with one year’s notice.

There is an unresolved debate as to whether to call COP21 an agreement or a treaty.

 

CO2 Contributed Only 0.12°C To Global Temps Since 1850

by Kenneth Richard, July 17, 2017


A Swiss scientist known to have published hundreds of scientific papers in physics journals has authored a new scholarly paper that casts serious doubts on the effectiveness of CO2 as a greenhouse gas influencing Earth’s temperatures.

This paper has been added to a growing volume of peer-reviewed scientific papers that seriously question estimates of a high climate sensitivity to significant increases in CO2 concentrations.

Engineers have dispelled a 100-year-old scientific law used to describe how fluid flows through rocks

by Imperial College London, July 17, 2017, in ScienceDaily


The discovery by researchers from Imperial could lead to a range of improvements including advances in Carbon Capture and Storage (CCS). This is where industrial emissions will be captured by CCS technology, before reaching the atmosphere, and safely stored in rock deep underground.

See also here

On the Validity of NOAA, NASA and Hadley CRU Global Average Surface Temperature Data

by Dr. J. Wallace III et al., June 2017


Abridged research Report, 30 pages, .pdf

The conclusive findings of this research are that the three GAST data sets are not a valid representation of reality. In fact, the magnitude of their historical data adjustments, that removed their cyclical temperature patterns, are totally inconsistent with published and credible U.S. and other temperature data. Thus, it is impossible to conclude from the three published GAST data sets that recent years have been the warmest ever –despite current claims of record setting warming.

See also here

The Holocene context for Anthropogenic Global warming

by Ed Hoskins, June1, 2015


When considering the scale of temperature changes that alarmists anticipate because of Man-made Global Warming and their view of the disastrous effects of additional Man-made Carbon Dioxide emissions in this century, it is useful to look at climate change from a longer term, century by century and even on a millennial perspective.

(i) See also here

(ii) See also here

Three New Papers: Greenland 3-5°C Warmer With 40 Kilometers Less Ice Area 4,000-10,000 Years Ago

by Kenneth Richard, July 11, in ClimateChangeDispatch


It’s official. According to a new paper published in the journal Scientific Reports, Greenland has been cooling slightly since 2005.

This trend development may be a harbinger of what may be in store for the coming years.  Shifts in North Atlantic temperatures typically lead changes in the Arctic by a few years.  And throughout the North Atlantic, rapid cooling has been underway since 2005, plunging below the levels reached in the 1950s

Responsiveness of Atmospheric CO2 to Fossil Fuel Emissions: Updated

by Jamal Munshi, July 5, 2017 in SSRN

The IPCC carbon budget concludes that changes in atmospheric CO2 are driven by fossil fuel emissions on a year by year basis. A testable implication of the validity of this carbon budget is that changes in atmospheric CO2 should be correlated with fossil fuel emissions at an annual time scale net of long term trends. A test of this relationship with insitu CO2 data from Mauna Loa 1958-2016 and flask CO2 data from twenty three stations around the world 1967-2015 is presented. The test fails to show that annual changes in atmospheric CO2 levels can be attributed to annual emissions.


 

…Importance of CO2…

by Donn Dears, July 2017


Here is a summary of the graph’s salient points:

  • The CO2 safe limit for US Navy submarines is 8,000 ppm (Dotted red line)
  • The CO2 safe limit for the space station is 5,000 ppm (Dotted blue line)
  • A line depicting the gradual doubling of CO2 is near the bottom of the graph
  • The minimum atmospheric CO2 requirements to sustain plant growth is 150 ppm (Dotted green line)

In addition, atmospheric CO2 has been as high as 7,000 ppm approximately 550 million years ago, and as high as 2,000 ppm as recently as 150 million years ago. (Also here in French)

What the graph clearly shows is how close mankind came to extinction when atmospheric CO2 levels dropped to 183 ppm during the last ice age.

Life on Earth was nearly doomed by too little CO2

by  Dennis T. Avery, June 30, 2017 in WUWT


Carbon dioxide truly is “the gas of life.” The plants that feed us and wildlife can’t live without inhaling CO2, and then they exhale the oxygen that lets humans and animals keep breathing.

Our crop plants evolved about 400 million years ago, when CO2 in the atmosphere was about 5000 parts per million! Our evergreen trees and shrubs evolved about 360 million years ago, with CO2 levels at about 4,000 ppm. When our deciduous trees evolved about 160 million years ago, the CO2 level was about 2,200 ppm – still five times the current level.

See also here (in French)

How too little CO2 nearly doomed humankind

by Dennis T. Avery, June 30, 2017 in ClimateChangeDispatch


Statistician Bjorn Lomborg had already pointed out that the Paris CO2 emission promises would cost $100 trillion dollars that no one has, and make only a 0.05-degree difference in Earth’s 2100 AD temperature. Others say perhaps a 0.2 degree C (0.3 degrees F) difference, and even that would hold only in the highly unlikely event that all parties actually kept their voluntary pledges.

Evidence Review Suggests Humans May Not Be The Primary Drivers Of CO2 Concentration Changes

by Kenneth Richard, June 29, 2017 in NoTricksZone


For the last 3 years, human CO2 emissions rates have not risen.  In fact, according to the IEA, we burned slightly more fossil fuels in 2014 than we did in both 2015 and 2016.

Despite the lack of growth – even slight decline – in human emissions rates during 2014 – 2016, the atmospheric CO2 parts per million (ppm) concentration grew rapidly – by more than 8 ppm (397 ppm to 405 ppm).

More Evidence of the Great 21st Century Warming Pause

by Y. Xie, J. Huang and Y. Liu, June 26, 2017 in CO2Science


One of the many conundrums facing climate alarmists — who predict that dangerous future global warming will result from increasing concentrations of atmospheric CO2 — is the existence of the aptly-named “warming hiatus.” Also referred to as the “warming pause,” this phenomenon describes a nearly two-decade-long leveling off of global temperatures despite a ten percent increase in atmospheric COconcentration since 1998. The significance of these observations resides in the fact that all climate models project that temperatures should not be levelling off, but should be increasing (despite interannual variability) in direct consequence of the ongoing rise in atmospheric CO2.