Happy Christmas from Mauna Loa

The latest measurements for atmospheric carbon dioxide from Mauna Loa show in November 2014 a measurement of 397.13 parts per million compared with 395.11 ppm in November 2013. Continue reading

Atmospheric Carbon Dioxide Concentrations

The Mauna Loa readings of atmospheric carbon dioxide for July 2014 (monthly mid month mean) were 399 parts per million, which was a rise of 1.8 parts per million compared with July 2013. The measuring site is 3400 metres above sea level, and concentrations are marginally higher there than at sea level. the monthly mean for marine sea level sites for July 2014 was 397.82.   Continue reading

Carbon Dioxide in the Atmosphere Now Exceeds 400ppm

In May 2014 the atmospheric concentration of carbon dioxide measured at Mauna Loa was  401.85 ppm compared with 399.76 ppm a year earlier. In May 1960 the concentration was about 310 ppm and there has been a steady rise in concentration since then.  The mean annual growth rate is about 2.5 ppm and we can look forward to continued and growth levels of carbon dioxide which are higher than has ever been experienced by human beings in the form of homo sapiens.

There is nothing magic about the concentration exceeding 400 ppm. Some reputable scientists believe that even at 1000 ppm the climate will not change, but those are in a minority. One thing is certain; the atmosphere does not absorb all the anthropogenic carbon dioxide emissions; the sea absorbs some of them too, resulting in the acidification of the oceans.  Dissolving CO2 in seawater increases the hydrogen ion concentration in the ocean, and thus decreases ocean pH. This is elementary science, and while we may be fearful of increased atmospheric carbon dioxide we should be equally fearful of increased dissolved carbon dioxide in sea water.

We have nearly reached 400 part per million.

The most recent monthly average of atmospheric carbon dioxide measured at Mauna Loa Hawaii in March 2014 was 399.65 ppm, compared with 397.31 ppm in March 2013. Humanity has nearly done it. BY the end of May the measurement will exceed 400 part per million, I have no doubt. We live, as the Chinese Curse would have it, in interesting times.

Tropical Storms and Carbon Dioxide Emissions

Winds of 146 miles an hour sometimes happen at sea, but for such strong winds to pass over land is unknown in recorded meteorology. Unfortunately that strength of wind is battering the Philippines as I write these words. Typhoon Haiyan looks like being the strongest ever recorded storm ever to pass over land. Continue reading

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

400 Parts Per Million and Rising

Those who measure the atmospheric carbon dioxide at Mauna Loa have recorded in March 2013 a monthly average concentration of 397.34 parts per million compared with  394.45 ppm which was recorded in March 2012.  The April figures are not yet our but in May the average concentration exceeded 400 ppm, which level of concentration the earth has not experienced for more than 5 million years. It is, in my view, certain that the atmospheric carbon dioxide concentration will average more than 400 ppm by the end of this year.

We are, as humans, moving into a new place.

http://www.esrl.noaa.gov/gmd/ccgg/trends/#mlo