Surface Emissivity Modeling - University of WisconsinâMadison
Surface Emissivity Modeling - University of WisconsinâMadison
Surface Emissivity Modeling - University of WisconsinâMadison
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<strong>Surface</strong> <strong>Emissivity</strong> <strong>Modeling</strong><br />
• Open water –two-scale<br />
roughness theory<br />
• Sea ice – Coherent<br />
reflection<br />
• Canopy – Four layer<br />
clustering scattering<br />
• Bare soil – Coherent<br />
reflection and surface<br />
roughness<br />
• Snow/desert – Random<br />
media<br />
Weng et al (2001, JGR)<br />
<strong>Emissivity</strong> at H-Polarization<br />
<strong>Emissivity</strong> at V-Polarization<br />
<strong>Surface</strong> <strong>Emissivity</strong> Spectra (θ=53 0 )<br />
1.0<br />
0.9<br />
0.8<br />
0.7<br />
0.6<br />
0.5<br />
0.4<br />
0.3<br />
0.2<br />
0 20 40 60 80 100 120 140 160 180 200<br />
Frequency (GHz)<br />
<strong>Surface</strong> <strong>Emissivity</strong> Spectra (θ=53 0 )<br />
1.0<br />
0.9<br />
0.8<br />
0.7<br />
0.6<br />
0.5<br />
0.4<br />
0.3<br />
0.2<br />
0 20 40 60 80 100 120 140 160 180 200<br />
Frequency (GHz)<br />
Snow<br />
Canopy<br />
Bare Soil<br />
Wet Land<br />
Desert<br />
Ocean<br />
Snow<br />
Canopy<br />
Bare Soil<br />
Wet Land<br />
Desert<br />
Ocean
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