New constraints on Northern Hemisphere growing season net flux
Copyright policy )New constraints on Northern Hemisphere growing season net flux
Observations of the column‐averaged dry molar mixing ratio of CO2 above both Park Falls, Wisconsin and Kitt Peak, Arizona, together with partial columns derived from aircraft profiles over Eurasia and North America are used to estimate the seasonal integral of net ecosystem exchange (NEE) between the atmosphere and the terrestrial biosphere in the Northern Hemisphere. We find that NEE is ∼25% larger than predicted by the Carnegie Ames Stanford Approach (CASA) model. We show that the estimates of NEE may have been biased low by too weak vertical mixing in the transport models used to infer seasonal changes in Northern Hemisphere CO2 mass from the surface measurements of CO2 mixing ratio.
- National Oceanic and Atmospheric Administration United States
- University of Colorado Boulder United States
- University of California, Irvine United States
- University of Colorado System United States
- University of California System United States
terrestrial carbon sink, net ecosystem exchange, Hemisphere, inverse modeling, 333, Ecosystems, Surface measurement, Quinlan Mountains, Wisconsin, Biosphere, vertical mixing, carbon cycle, Climate change, Northern Hemisphere, Mathematical models, Net ecosystem exchange (NEE), Arizona, carbon dioxide, Park Falls, United States, column-averaged CO_2, aircraft profiles, Earth atmosphere, Kitt Peak, Carbon dioxide, North America
terrestrial carbon sink, net ecosystem exchange, Hemisphere, inverse modeling, 333, Ecosystems, Surface measurement, Quinlan Mountains, Wisconsin, Biosphere, vertical mixing, carbon cycle, Climate change, Northern Hemisphere, Mathematical models, Net ecosystem exchange (NEE), Arizona, carbon dioxide, Park Falls, United States, column-averaged CO_2, aircraft profiles, Earth atmosphere, Kitt Peak, Carbon dioxide, North America
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