by co2is life blog, April 15, 2017
The theory goes that over time CO2 increases resulting in an increase in temperature, put another way, temperature is a function of CO2, or T=f(CO2). This model, however, is deeply flawed and demonstrates a disturbing ignorance of science, modeling, and the physics behind the greenhouse gas effect.
by Clyde Spencer, April 23, 2017
By convention, climate is usually defined as the average of meteorological parameters over a period of 30 years. How can we use the available temperature data, intended for weather monitoring and forecasting, to characterize climate? The approach currently used is to calculate the arithmetic mean for an arbitrary base period, and subtract modern temperatures (either individual temperatures or averages) to determine what is called an anomaly. However, just what does it mean to collect all the temperature data and calculate the mean?
by P. Ventura et al., 2016,
Writing as background for their work, Ventura et al. (2016) say that « non-calcifying photosynthetic anthozoans have emerged as a group that may thrive under high carbon dioxide partial pressure (pCO2) conditions via increased productivity, » yet they add that « the physiological mechanisms underlying this potential success are unclear. »
by Nic Lewis, April 18, 2017
There is as yet no observational evidence that climate sensitivity increases with time in the real climate system – although this cannot be ruled out – nor is it fully understood why it increases in most AOGCMs. In any event, even if real-world climate sensitivity does increase with time, in the longer run other factors that are not reflected in ECS, such as melting ice sheets, are probably more important. Therefore, while time-varying climate sensitivity is of considerable interest from a theoretical point of view, for practical purposes its influence is likely to be very modest.
by P. Gosselin, April 8, 2017
Looking at data objectively, it is pretty clear that there is little relationship between weather/climate and the rising CO2 concentrations in the atmosphere, as the global warming pause between 1997-2016 shows –
by Eghbert Elvan Ampou et al., 2017
The clear link between mortality and sea level fall also calls for a refinement of the hierarchy of El Niño impacts and their consequences on coral reefs.
by planete energies, 03 février 2016
L’ Agence Internationale de l’Énergie (AIE) a élaboré plusieurs scénarios de l’évolution prévisible du mix énergétique d’ici 2035. Le scénario moyen (« New policies scenario ») met en évidence l’augmentation de la demande en énergie primaire, qui passe de 13 000 Mtep en 2011 à 17 400 en 2035. La part des énergies fossiles (pétrole, gaz, charbon) restera largement dominante : elle passerait de 81 % en 2011 à 76 % en 2035. Les énergies renouvelables (y compris hydraulique et biomasse) seront en croissance : de 13 % en 2011 à 18 % en 2035