A-R: A key feature of the
system
¥What we measure: Net Ecosystem Exchange
¥(the flux of CO2 across an imaginary plane above the
canopy)
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¥But: NEE cannot be directly parameterized
NEE = Photosynthesis - Respiration
The model
(or observation equation) must ÒtransformÓ the
observation (NEE) into physically modeling components.
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This is
neglecting complex but different processes such as fire and
forest harvest.
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