Improved docs for it_cl_type

Author: stelliom

docs/user_manual/user_manual_06_namelist_input.md

@@ -179,9 +179,12 @@ The COSMO grid is defined by a rotated latlon-grid.
 | `raw_data_t_clim_path`         | character |            |         | path to T2m climatology data |
 | `raw_data_t_clim_coarse`       | character |            |         | filename of coarse T2m climatology data |
 | `raw_data_t_clim_fine`         | character |            |         | filename of fine T2m climatology data |
-| `it_cl_type`                   | integer   |            |         | switch to choose between the <br> 1: new and fine <br> 2: the old and coarse over sea and the fine over land raw data set. <br> Note that the fine data set (1) is topographically corrected. |
+| `it_cl_type`                   | integer   |            |         | switch to choose between the <br> 1: Aggregates the fine data over land, sea points are not considered. No lapse rate correction of soil temperature based on difference between CRU and ICON model topography <br> 2: Aggregates the coarse data over sea and the fine data over land. Lapse rate correction takes place (lapse rate and additional temperature offset can be specified with t_lapse_rate and t_offset). |
 | `t_clim_buffer_file`           | character |            |         | name for T_clim buffer file |
 
+      - it_cl_type = 2 aggregates the coarse data over sea **and** the fine data over land
+      - it_cl_type = 1 aggregates the fine data over land, sea points are not considered
+
 ## NDVI Data
 
 ### DICT `input_ndvi` (namelist.py)