Why has the seasonal cycle of CO2 increased? By Rebecca Thomas

An increase in the amplitude of the seasonal cycle of CO2 has been observed in the higher latitudes of the northern hemisphere. In situ measurements between 1960-2011 show increases at Point Barrow, Alaska and Mauna Loa Observatory, Hawaii of 35% (range 30 to 49%) and 15±5% respectively, and recent aircraft campaign data have confirmed that … Continue reading Why has the seasonal cycle of CO2 increased? By Rebecca Thomas