(Update) Code and Data: Analytic parameterization of longwave optical properties of bulk vegetation layer permitting non-zero leaf reflectivity and its implementation in CLM5

This vesion is an update of the source code for single figure-representation among the components published in the previous version.

The description of the previous version: These source codes provide the means to calculate and analyze longwave optical properties for both the land surface and bulk vegetation layer. The analysis leads to the development of a new scheme, designed specifically for use in land surface models to derive optical properties. In addition, the CLM5 experiments with the new scheme implemented are assessed.