142M471B3J 2 CO2 seasonality 2 Carbon Dioxide 2 Journal Article 2 Point Barrow station δ13C 2 7440-44-0 1 mehr ... Alert station 1 CMIP5 1 Carbon 1 La Jolla station 1 Mauna Loa Observatory 1 Research Support, Non-U.S. Gov't 1 carbon isotope 1 carbon uptake 1 climate change 1 earth system model 1 peak season 1 phenology 1 plant phenology 1 soil respiration 1 weniger ...