Bi-directional Reflectance: Soil Example

Soil under Grass Canopy on July 13, 1999 (DOY 194)

55o Solar Zenith Angle

Bidirectional view  along the principle plane of the sun and perpendicular to the principle plane of the sun. Click here to go to numerical data.

Perpendicular
to the Principle Plane of the Sun; View Zenith Angle

Click on an image to see a larger picture

wh084_99_55_p1_pd-30.jpg (177122 bytes)-30
View Zenith Angle-60 -30 wh084_99_55_p1_pd-15.jpg (183991 bytes)-15 +30 +60  
Parallel to the Principle Plane of the Sun
wh084_99_55_p1_pa-30.jpg (188800 bytes)
wh084_99_55_p1_pa-30.jpg (188800 bytes) wh084_99_55_p1_pa-15.jpg (182297 bytes) wh084_99_55_p1_pa+15.jpg (198603 bytes) wh084_99_55_p1_pa+30.jpg (195418 bytes)
sl194_99_55_p1_pd+15.jpg (179018 bytes)+15 soil grass 45
Qz = 45o
wh084_99_55_p1_pd+15.jpg (179018 bytes)+30 soil grass 35
Qz = 35o
  soil grass at 25
Qz = 25o