Aug. 14, 2013 — In 2003, Central and Southern Europe sweltered in a heatwave that set alarm bells ringing for researchers. It was one of the first large-scale extreme weather events which scientists were able to use to document in detail how heat and drought affected the carbon cycle (the exchange of carbon dioxide between the terrestrial ecosystems and the atmosphere). Measurements indicated that the extreme weather events had a much greater impact on the carbon balance than had previously been assumed. It is possible that droughts, heat waves and storms weaken the buffer effect exerted by terrestrial ecosystems on the climate system. In the past 50 years, plants and the soil have absorbed up to 30% of the carbon dioxide that humans have set free, primarily from fossil fuels.
The indications that the part played by extreme weather events in the carbon balance had been underestimated prompted scientists from eight countries to launch the CARBO-Extreme Project. For the first time, the consequences of various extreme climate events on forests, bogs, grass landscapes and arable areas throughout the world underwent systematic scrutiny.
Satellites and recording stations document extreme events Continue reading
August 21, Wednesday.7:00pm until 9:00pm.
Roberto Perez, Cuban environmental educator featured in the award winning documentary, “The Power of Community, How Cuba Survived Peak Oil” will be in Portland on August 21st. He is currently in the U.S. promoting the 11th International Permaculture Convergence (IPC11) to be held in Cuba in November of 2013. Continue reading