Do you find yourself thinking: Another drought? Another flood? If you’ve noticed extreme weather conditions seem more common, you aren’t the only one. According to an article in The Guardian, German climate scientists analyzed weather patterns from the past 35 years and have noticed a significant increase in “blocking patterns,” which have doubled the frequency of extreme weather conditions in the last 10-15 years. Damian Carrington of The Guardian writes:
The work shows so-called “blocking patterns”, where hot or wet weather remains stuck over a region for weeks causing heatwaves or floods, have more than doubled in summers over the last decade. The new study may also demonstrate a link between the UK’s recent flood-drenched winter and climate change.
Fires are more likely to spread and spread fast during a a heatwave. In 2010, 50,000 people in Russia died from fires due to heatwaves. The winter of 2013-2014 was the wettest the UK had seen in more than 250 years. Flooding from these rains destroyed property, businesses, land and lives. Both of these extreme weather conditions are the result of the increase in these “blocking patterns.”
The rise in blocking patterns correlates closely with the extra heating being delivered to the Arctic by climate change, according to the research which is published in the journal Proceedings of the National Academies of Science (PNAS). Coumou [Dr Dim Coumou, at the Potsdam Institute for Climate Impact Research] and his colleagues argue there are good physical reasons to think there is a causal link, because the jet streams are driven by the difference in temperature between the poles and the equator. As the Arctic is warming more quickly than lower latitudes, that temperature difference is declining, providing less energy for the jet stream and its meanders, which are called Rossby waves.
The link between climate change and increasing extreme weather conditions is, arguably, firmly established. The timeframe, however, is a different story. For extreme weather conditions to double in the last 10-15 years shows that climate change is moving faster, resulting in more frequent catastrophic weather patterns that damage both natural and urban environments. The rate will only increase and the disasters along with it. What will “blocking patterns” have to wipe out before governments and corporations will actually start to listen?
Want to learn more? Read the full article.