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Tower and Aircraft Eddy Covariance Measurements of Water Vapor, Energy, and Carbon Dioxide Fluxes during SMACEX
Author(s) -
John H. Prueger,
Jerry L. Hatfield,
Timothy B. Parkin,
William P. Kustas,
Lawrence E. Hipps,
Christopher M. U. Neale,
J. I. MacPherson,
William E. Eichinger,
D. I. Cooper
Publication year - 2005
Publication title -
journal of hydrometeorology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.733
H-Index - 123
eISSN - 1525-755X
pISSN - 1525-7541
DOI - 10.1175/jhm457.1
Subject(s) - eddy covariance , sensible heat , environmental science , water vapor , atmospheric sciences , latent heat , carbon dioxide , atmosphere (unit) , flux (metallurgy) , energy balance , heat flux , moisture , tower , humidity , hydrology (agriculture) , meteorology , ecosystem , chemistry , heat transfer , geography , ecology , geology , physics , organic chemistry , biology , thermodynamics , geotechnical engineering , archaeology
A network of eddy covariance (EC) and micrometeorological flux (METFLUX) stations over corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] canopies was established as part of the Soil Moisture–Atmosphere Coupling Experiment (SMACEX) in central Iowa during the summer of 2002 to measure fluxes of heat, water vapor, and carbon dioxide (CO2) during the growing season. Additionally, EC measurements of water vapor and CO2 fluxes from an aircraft platform complemented the tower-based measurements. Sensible heat, water vapor, and CO2 fluxes showed the greatest spatial and temporal variability during the early crop growth stage. Differences in all of the energy balance components were detectable between corn and soybean as well as within similar crops throughout the study period. Tower network–averaged fluxes of sensible heat, water vapor, and CO2 were observed to be in good agreement with area-averaged aircraft flux measurements.

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