Coupling global models for hydrology and nutrient loading to simulate nitrogen and phosphorus retention in surface water. Description of IMAGE-GNM and analysis of performance

A.H.W. Beusen[1,2], L.P.H. Van Beek[3], A.F. Bouwman[1,2], J.M. Mogollón[1], J.J. Middelburg[1]
[1] {Department of Earth Sciences â€“ Geochemistry, Faculty of Geosciences, Utrecht University, PO Box 80021, 3508 TA Utrecht, The Netherlands}
[2] {PBL Netherlands Environmental Assessment Agency, P.O. Box 303, 3720 AH Bilthoven, The Netherlands}
[3] {Department of Physical Geography, Faculty of Geosciences, Utrecht University, P.O. Box 80.115, 3508 TC Utrecht, The Netherlands}

Correspondence to: A.H.W. Beusen (arthur.beusen@pbl.nl)


Agreement
---------
The data is provided for reproducing the results presented here.
Anyone can use these files for noncommercial academic research only.
If you want to make a buck off of these files get in touch and we will talk.
We would appreciate a short description of what you are planning to do with the data.
If you feel that this data set is a major contribution to your research, 
we would like to be coauthor on any manuscript.
If the data is being included in a published manuscript,
we would like to see a preprint before submission to make sure the data description is correct.

Installation
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Unzip the source code and call the directoryname of location of this file GNM_HOME.

How to use them
---------------
The python script for the N model can be started with:
$ cd $GNM_HOME
$ cd N_model/trunk/tools
$ python N-model.py --inifile history.ini --root $GNM_HOME/N_model/trunk

Output can be found at $GNM_HOME/output_history_110/2000

The python script for the P model can be started with:
$ cd $GNM_HOME
$ cd P_model/trunk/tools
$ python P-model.py --inifile history.ini --root $GNM_HOME/P_model/trunk

Output can be found at $GNM_HOME/output_history_110/P2000

Requirements
------------
You will need python 2.7.
