README.md

 README 4C - FORSEE - FORESt Ecosystems in a changing Environment
 
 This file contains basic information on the open source distribution of
-the computer simulation model 4C. The model has been developed and is maintained
+the computer simulation forest model 4C. The model has been developed and is maintained
 at the Potsdam Institute for Climate Impact Research (PIK) in Potsdam, Germany,
 see "opensource_PIK_approval".
 
@@ -10,20 +10,26 @@ Potsdam Institute for Climate Impact Research. All files are licenced under
 BSD 2-Clause License, see the LICENCE file for details. The 4C model is a 
 collaborative work, see the AUTHOR file for details.
 
-For information about the 4C model see "about".
-For a basic introduction and installation see the file .... 
-For manual on "how to start" see the directory manuals. 
-For background information documents see the directory description/additional. 
-To test the propper working of the functions of the model see the directory data/4C testing. 
-All relevant publications regarding the model see the directory publications.
+- See http://www.pik-potsdam.de/4c/ for information about 4C and the manual
+- For the model description see 4C_description.pdf in the directory descriptions
+- The directory executables contains three executables with self-explanatory names
+- The directory source_code contains the corresponding source codes in three subdirectories with self-explanatory names
+- Additional information can be found in following directories:
+    * manuals: about "how to start" and " generate exe"  
+    * descriptions/additional: background information documents 
+    * descriptions/Fact_sheets: short summary of the model in English and German
+    * source_code/additional: overview on variables with their names in the 4C description and the names in the source code
+                              flow chart of the model 4C 
+    * test_data_sets: test the correct function mode of the model with complete sets of input data and control files 
+    * publications: relevant publications regarding the model 4C
 
 The source code is distributed via a git repository at: 
-https://gitlab.pik-potsdam.de/foresee/4C
-The code language is Fortran and is ready to use. Since the model development is
+https://gitlab.pik-potsdam.de/foresee/4C and is ready to use.
+The code language is Fortran90. Since the model development is
 finished, there is no further development and no further support in model 
 download, setup, development or application. No merge or other development 
-requests will be handeled. There fore there are no code style recommendations or
-instructions on how to create source code ammendments.
+requests will be handeled. Therefore there are no code style recommendations or
+instructions on how to create source code amendments.
 
 
 

data/4C testing/flag_wpm_sea/sea_prices.wpm

-# SEA: Costs, assets and subsidies of forest management
-# Region: Germany  | forest owner: federal state  | year: 2010 
-# for tree species: pine, spruce, oak, beech, birch
-
-# average fix costs (yearly) euro/ha
-106.0   
-
-# planting 1000 pieces/ha
-391.0 518.0 772.0 664.0 467.0    
-# fence euro/ha 
-3.35   0.0   0.0   0.0   0.0   
-# brushing in euro/ha
-215.0   
-# tending in euro/ha
-97.0   
-
-# harvesting method: harvester to chainsaw 
-0.8   0.2   
-# threshold value for harvester method descision: percents of decidious
-0.2  
-
-# timber harvesting + skidding costs per assortment for Germany in the year 2000 in euro/ha
-# rows 1-10: fue, in, LAS1a, LAS1b, LAS2a, LAS2b, LAS3a, L2b, L3a, L3b
-# chainsaw              
-46.5  48.7  40.2  40.2  40.2   
-46.5  48.7  40.2  40.2  40.2   
-16.9   0.0   0.0   0.0   0.0            
-16.9  23.5   0.0   0.0   0.0   
-14.1  19.3  21.5  17.2  17.2   
-12.0  17.2  18.1  15.3  15.3    
-10.2  13.1  14.9  11.5  11.5   
-12.0  17.2  18.1  15.3  15.3    
-10.2  13.1  14.9  11.5  11.5   
- 9.2  11.9  14.1  11.0  11.0    
-
-# harvester
-17.4  17.4  17.4  17.4  17.4  
-17.4  17.4  17.4  17.4  17.4  
-16.9  16.9  16.9  16.9  16.9  
-16.9  16.9  16.9  16.9  16.9
-16.3  16.3  16.3  16.3  16.3
-16.3  16.3  16.3  16.3  16.3
-15.3  15.3  15.3  15.3  15.3
-16.3  16.3  16.3  16.3  16.3
-15.3  15.3  15.3  15.3  15.3
-15.3  15.3  15.3  15.3  15.3
-
-# net prices for Germany euro/m3 
-12.0  12.0  23.6  23.6  12.0                
-32.0  32.0  42.0  47.0  32.0              
-40.0  50.0   0.0   0.0  40.0          
-53.0  70.0   0.0   0.0  53.0              
-60.0  80.0  37.0  48.0  60.0               
-67.0  86.0  37.0  45.0  67.0              
-68.0  88.0  37.0  45.0  68.0          
-75.0  93.0  70.0  50.0  75.0         
-80.0  95.0  90.0  55.0  80.0         
-80.0  97.0  150.0 83.0  80.0             
-
-# forest maintenance: external employer loan expences (for private forest owner only) in euro/ha
-28.90
-# timber selling: external employer loan expences (for private forest owner only) in euro/m3
-28.90   
-
-# subsidies for: 
-# fix costs (yearly)
-0.0         
-# planting after clear cut euro/ha
-0.0   0.0   0.0   0.0   0.0    
-# planting by shelterwood system euro/ha
-0.0   0.0   0.0   0.0   0.0     
-# fence euro/ha 
-0.0   0.0   0.0   0.0   0.0   
-# brushing in euro/ha
-0.0
-# tending in euro/ha
-0.0
-# forest maintenance: external employer loan expences (for private forest owner only) in euro/ha
-0.0
-# timber selling: external employer loan expences (for private forest owner only) in euro/m3
-0.0
-
-# interests rates
-0.02  0.04  0.06