Physics – Geophysics
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3305k&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 17, p. 3305-3308
Physics
Geophysics
4
Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions, Hydrology: Water/Energy Interactions, Mathematical Geophysics: Nonlinear Dynamics, Meteorology And Atmospheric Dynamics: Land/Atmosphere Interactions
Scientific paper
This study explores the complexity (or disorder) in mapping energy (Rn) forcing to land surface fluxes of sensible heat (Hs), water vapor (LE), and carbon dioxide (or net ecosystem exchange, NEE) for different soil water states (θ). Specifically, we ask, does the vegetation act to increase or dissipate statistical entropy injected from Rn? We address this question using novel scalar complexity measures applied to a long-term time series record of Rn, θ, Hs, LE, and NEE collected over a uniform pine forest. This analysis is the first to demonstrate that vegetation dissipates scalar flux entropy injected through Rn. We also find that the entropy or disorder in scalar fluxes increases with increasing Rn and that the complexity in mapping Rn to scalar fluxes is reduced with increasing θ.
Albertson John D.
Hsieh Cheng-I.
Katul Gabriel G.
Lai Chun-Ta
Oren Ram
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