## 2.8.7. Snow Layer Combination and Subdivision[¶](#snow-layer-combination-and-subdivision "Permalink to this headline")
----------------------------------------------------------------------------------------------------------------------

After the determination of snow temperature including phase change(Chapter [2.6](https://escomp.github.io/ctsm-docs/versions/master/html/tech_note/Soil_Snow_Temperatures/CLM50_Tech_Note_Soil_Snow_Temperatures.html#rst-soil-and-snow-temperatures)), snow hydrology (Chapter [2.8](#rst-snow-hydrology)), and the compaction calculations (section [2.8.6](#snow-compaction)), the number of snow layers is adjusted by either combining or subdividing layers. The combination and subdivision of snow layers is based on [Jordan (1991)](https://escomp.github.io/ctsm-docs/versions/master/html/tech_note/References/CLM50_Tech_Note_References.html#jordan1991).

