NSF says biosphere is breathing in CO2 more deeply

Press Release 13-139 Seasonal carbon dioxide range expanding as more is added to Earth’s atmosphere Northern Hemisphere land-based ecosystems “taking deeper breaths,” scientists find Levels of carbon dioxide in the atmosphere rise and fall each year as plants, through photosynthesis and respiration, take up the gas in spring and summer, and release it in fall…

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Premature 400 PPM fail-a-bration

It seems we didn’t reach 400PPM last week after all. The data has been revised. Ooops. ‘Carbon dioxide measurements in the Earth’s atmosphere did not break the symbolic milestone of 400 parts per million at a Hawaiian observatory last week, according to a revised reading from the nation’s climate observers.

How well did Hansen (1988) do?

Guest Post by Ira Glickstein. The graphic from RealClimate asks “How well did Hansen et al (1988) do?” They compare actual temperature measurements through 2012 (GISTEMP and HadCRUT4) with Hansen’s 1988 Scenarios “A”, “B”, and “C”. The answer (see my annotations) is “Are you kidding?” HANSEN’S SCENARIOS The three scenarios and their predictions are defined…