A Depressing Achievement

We are nearly there. The Mauna Loa readings of atmospheric carbon dioxide at an altitude of 3,400 metres in the Hawaiian northern subtropics recorded a mean average for May 2013 of 399.77 parts per million.   Continue reading

Weather is Temporary, Climate Permanent

People confuse weather with climate. Weather, like form, is temporary but climate like quality is permanent, or relatively so. When we say that there is climate change we are not speaking of changes in weather from day to day or even year to year or even decade to decade, but a process which has always happened. Until the industrial revolution that process was gentle and slow and mostly took hundreds of years but since the industrial revolution has moved much more quickly. If you measure this process as a trend over the centuries it can be seen more clearly. Continue reading

Geo engineering the climate – big on promises but…

Once in a while someone thinks of a bright idea without thinking it through properly. The idea is to cure some ill, but sometimes the cure may we worse than the disease. At the heart of these bright ideas is an endeavour to do good, but often there are other motives. Continue reading

El Niño is coming back

Some guests are unwelcome but necessary. Flies are a nuisance but they serve a useful purpose. Strange weather events that happen every few years bring good and bad consequences. After an absence of three years El Niño is back, bringing good things for some and bad things for others. Continue reading