Latest CO2 readings

Ed Reid said:

I will assume that your use of the term "deniers" above does not refer to those who deny the existence of specific historical instances of climate change, such as the Medieval Warm Period and the Little Ice Age.

You typically use the term to refer to those who do not accept projections regarding the future, rather than to those who do not acknowledge occurrences in the past.

Anonymous said:

Maybe I’ve been paying too much attention to the deniers lately, but I can’t quite discern a pattern in any of these. Can someone here toss me a hint? Forgive me if I've misunderstood sarcasm, but you can't see a pattern? The pattern is an increase, every year since 1958. It has not been a steady increase, admittedly, it has fluctuated between 0.28 (1964) and 2.62 (2002). However, it has not fallen for 52 years. Also, apart from a few anomalies, the annual rate of rise has increased, as demonstrated by the black line moving upwards, away from 45º. Dr Tans has previously said that variations in the growth rate year by year can be explained by natural factors; for example, plants sequester 'sinks' and how the oceans soak up carbon dioxide. But the overwhelming evidence of a constant rise is that this must be attributed to man-made carbon emissions. The pattern is cumulative increase. Again, apologies if I've missed your point here!