My initial reply may well have been over simplified, but that does not necessarily signify inaccuracy, Dr Dave.
You have very eruditely produced data and facts to back your stance, and I note your belief in the increase in CO2 levels.
Basic photosynthesis, as you will know, is the process that converts energy in sunlight to chemical forms of energy that can be used by biological systems. Photosynthesis is carried out by many different organisms, ranging from plants to bacteria. All these organisms convert CO2 (carbon dioxide) to organic material by reducing this gas to carbohydrates in a rather complex set of reactions.
All the food we eat and all the fossil fuel we use is a product of photosynthesis, and with a rapidly burgeoning world population, even more of the building blocks of photosynthesis become essential to provide the food and fuel supplies necessary to support this population growth.
Does the increase in CO2 levels not signify that we now see an increased food supply for these plants and organisms, and also that this supply is where it can be used, namely where these biological systems exist?
Weather, and the study of it has been long and involved, but most have agreed that apart from any other factors, weather patterns have always been chaotic, and temperature fluctuations have existed since long before mankind exerted any influences on the atmosphere.