An Indian farmer inspects her agricultural field which is badly affected by the heat wave and scanty rainfall in India. Photograph: STR/EPA
by John Abraham, "Climate Consensus - The 97%," The Guardian, July 1, 2015
When we see records being broken and unprecedented events such as this, the onus is on those who deny any connection to climate change to prove their case. Global warming has fundamentally altered the background conditions that give rise to all weather. In the strictest sense, all weather is now connected to climate change. Kevin Trenberth HIT THE PAGE DOWN KEY TO SEE THE POSTS Now at 8,800+ articles. HIT THE PAGE DOWN KEY TO SEE THE POSTS
Our study focuses on the need to understand the underlying physical causes of extreme weather events, and to systematically test whether the probability of those underlying conditions has changed in recent decades. Events that are so extreme that they fall outside of our historical experience often result from a suite of complex interacting factors. To better understand these factors we’ve developed a method that allows us to partition the climate influences.
The majority of the observed changes in extreme temperature occurrence have resulted from changes in the heat content of the climate system. However, we also find that the risk of extreme temperatures over some regions has been altered by changes in the motion of the atmosphere via changes in the frequency and duration of regional circulation patterns.
...our quantitative partitioning, in conjunction with targeted climate model simulations offers the potential to fingerprint dynamic and thermodynamic influences in isolation, which in turn may facilitate attribution of the observed trends and projection of future trends.