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Water residing on plants alters the L-band brightness of senescing corn
Conference proceeding

Water residing on plants alters the L-band brightness of senescing corn

B. K Hornbuckle, T Rowlandson, E Russell, A Kruger and T Sauer
2010 11th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment, pp.76-80
03/2010
DOI: 10.1109/MICRORAD.2010.5559587

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Abstract

We analyzed the horizontally- and vertically-polarized L- band brightness of fields of senescing corn (maize) collected by the Passive and Active L-band System (PALS) over the Iowa Validation Site in September, 2008. A model for senescent corn more closely matched observations than a model for growing corn. When water residing on the vegetation in the form of intercepted precipitation was present the h-pol and v- pol brightness temperature increased. When dew was present the h-pol and v-pol brightness temperature decreased. These observations are consistent with a previously presented conceptual model despite the fact that this model was constructed from observations of growing corn.
L-band radiometry Soil moisture Scattering Vegetation dew intercepted precipitation Brightness temperature Agriculture vegetation water content

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