Summary of the article:

Representing LUH2 Land Use and Land Cover Change in CLM5

The article describes the process of representing the LUH2 transient land use and land cover change (LULCC) dataset in the Community Land Model version 5 (CLM5). This involves translating the annual fractional composition of the 12 land units specified in the LUH2 dataset into corresponding Plant Functional Types (PFTs) and Crop Functional Types (CFTs) in the CLM5 model.

The key steps are:

1. Generating current-day descriptions of natural and managed vegetation PFTs at 1 km resolution, and current-day crop CFTs at 10 km resolution from various global datasets.

2. Combining the current-day (2005) LUH2 land units with the current-day CLM5 PFT and CFT distributions to get CLM5 land unit descriptions in either PFTs or CFTs at the LUH2 resolution of 0.25 degrees.

3. Combining the LUH2 land unit time series with the CLM5 PFT and CFT descriptions for that land unit to generate the CLM5 raw PFT and CFT time series.

4. Combining the PFT and CFT files with other raw CLM5 surface data files using the mksurfdata_esmf tool to produce the final CLM5 initial surface dataset and the dynamic landuse.timeseries dataset.

The article includes schematics to illustrate the overall process from the LUH2 time series and high-resolution current-day data to the output of the CLM5 surface datasets.