computeSunlit {RLeafAngle}

Compute the fraction of sunlit folige given solar position, LAI and G value with the assumption of the symmetric distribution of leaf azimuth angle.

Description

Compute the fraction of sunlit folige given solar position, LAI and G value with the assumption of the symmetric distribution of leaf azimuth angle.

Usage

computeSunlit(Theta, G, LAI)

Arguments

Theta

Solar zenith angle.

G

The G value, namely the projection of foliage area.

LAI

Leaf area index.

Value

The fraction of sunlit foliage.

Author(s)

Wei-Min Wang (wmwang AT gmail.com)

References

Wang, W. M., Li, Z. L., & Su, H. B. (2007). Comparison of leaf angle distribution functions: effects on extinction coefficient and fraction of sunlit foliage. Agricultural and Forest Meteorology, 143(1), 106-122.

Examples

computeSunlit(30, 0.5, 2.0)