So here are some of the revealing items from the 'debunking' report posted by cap..
Carbon dioxide is not saturated
One of the most persistent myths about carbon dioxide in the atmosphere is that it is either saturated or at the verge of becoming saturated. However, this is based on the false notion that the atmosphere is a single unit instead of being layered.
Feedback effects are crucial for understanding climate change and cannot be dismissed
In an attempt to minimize the impact of global warming on global average temperatures in the future, the climate change denialists at the NIPCC dismiss feedback effects and claim that the only relevant warming is the direct warming by carbon dioxide and that this warming (which they think is “a few tenths of a degree”) is negligible.
In reality, there is plenty of scientific evidence for positive feedback effects. These include more water vapor in the atmosphere, more carbon dioxide release from the oceans, methane release from the Siberian arctic, drying out of rainforests, decomposition, forest fires, desertification, some cloud feedback, replacement of ice with water and so on. There are also negative feedback effects, such as other kinds of cloud feedbacks, the solubility of carbon dioxide in the oceans, more primary production (i.e. more carbon sinks in photosynthetic organisms) and so on.
However, researchers consider positive feedback process to be stronger than negative feedbacks, so they cannot be minimized or dismissed by climate change denialists.
Global warming has not taken a break
One of the most deceptive techniques used by climate change denialists is to construct trend lines that appear to show that there has been no global warming since 1998 by cherry-picking the start and end points. The following animated graph illustrates this technique:
1998 was an especially warm year due to short-term noise provided by a strong El Niño. If you filter out a lot of the short-term noise, such as El Niño-Southern Oscillation, solar and volcanic activity, there have been no halt in warming since 1998:
This denialist approach also abuses statistical significance tests by asserting that “no statistically significant” warming has occurred since 1998. However, statistical significance relates to how probable the observe data, or more extreme data, are on the null hypothesis, not the practical significance of the observed trend. This alleged “lack of statistical significance” only because of not controlling for the short-term noise.
The carbon dioxide fertilization effect is more complex and variable than NIPCC thinks
It is true that carbon dioxide is the limiting reagent in some areas of the world. More carbon dioxide would therefore mean more plant growth. This could be beneficial by producing more food and more plants to act as sinks for atmospheric carbon dioxide. However, the situation is more complex than that for several reasons. Nitrogen will quickly become a limiting reactant because the proportion of nitrogen per biomass unit produced will decrease. This means that photosynthesis will be down-regulated because a key enzyme in the carbon fixation cycle called Rubisco has a high nitrogen content. Furthermore, plants with different forms of metabolism (C3, C4 and CAM) will react differently and for some this fertilization effect is not as large as previously thought.
Most enzymes have an optimal temperature for which their activity is greatest. Lower temperatures reduces the number of interactions that has sufficient energy to overcome the activation energy required for reaction. Too high temperatures over the optimum and they start to lose their three-dimensional structure that is often vital for their proper function. Some plants may currently grow in a climate were the temperature is below the optimal temperature, and so an increase in temperature will lead to a higher enzyme activity. But there are probably also those plants that grow in areas were the temperature is above the optimal temperature, and an increase in temperature will lead to an even lower enzyme activity. This means that there are places around the world were global warming will lead to less crop success and yield, even when taking into account the carbon dioxide fertilization effect.
There are also related issues surrounding agriculture that needs to be taken into account, such as water supply and large-scale fires. There is no guarantee that water supplies will not be affected by droughts and floods and a higher frequency of wildfires could be devastating for agriculture.
Conclusion
The Heartland Institute is ramping up their attempt to spread misinformation about climate change and global warming by having their deceptively named organization NIPCC putting out pseudoscientific and denialist “reports” that amount to little else than the mindless repetition of denialist myths that have been refuted many times previously.
NIPCC and Climate Change Denialism | Debunking Denialism