Applying the J2000 model - Revision history

Santosh: /* Model xml file */

2025-08-05T03:48:58Z

Model xml file

← Older revision		Revision as of 03:48, 5 August 2025
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	[[File:J2k_gehlberg.zip\| Model xml file of Gelberg catchment]]: This is a standard J2000 model xml file provided in the Gelberg test data. The Gelberg catchment in Germany has sufficient input data to use IDW method for regionalization		[[File:J2k_gehlberg.zip\| Model xml file of Gelberg catchment]]: This is a standard J2000 model xml file provided in the Gelberg test data. The Gelberg catchment in Germany has sufficient input data to use IDW method for regionalization
−
−	[[File:J2K_DudhKosi_SantoshPhD_Tutorial_2.zip\| Model xml file of Gelberg catchment]]: This is a model xml file of the Dudh Kosi river basin in the Himalayan region. The region has glaciers and only one temperature station. Therefore, Temperature lapse rate module is used for temperature regionalization.

	[[File:J2k_Hargreves.zip\| J2K with Hargreaves module]]: This is a model xml file for data scarce region (temperature and precipitation only) and the potential evapotranspiration is calculated using the Hargreaves Salami method.		[[File:J2k_Hargreves.zip\| J2K with Hargreaves module]]: This is a model xml file for data scarce region (temperature and precipitation only) and the potential evapotranspiration is calculated using the Hargreaves Salami method.

Santosh: /* Workspace for input data */

2025-08-05T03:47:25Z

Workspace for input data

← Older revision		Revision as of 03:47, 5 August 2025
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	==Workspace for input data==		==Workspace for input data==

−	The ~~input data of the~~ J2000 ~~hydrological~~ model has to be provided in a specific folder considered as a 'workspace directory'. This directory contains all the input data required to run the model as well as the model output files. The workspace directory of ~~'Dudh Kosi model'~~ is provided ~~herewith with all the input dataset from 1987 to 1990 required to run the model. As explained earlier,~~ the ~~input~~ data ~~provided here are not from~~ the ~~observed stations. They are from some hypothetical stations derived from regioanlized data in addition to unsystematic random errors.~~	+	The J2000 model for Dudh Koshi river basin of Mt Everest region, Nepal is provided within the data folder of the JAMS installation:
−		+	Check the folder path: C:\jams\data\j2k_dudh_koshi
−	~~[[File~~:~~J2000_DudhKosi_Tutorial.zip \| J2000 DudhKosi model workspace directory]]~~	+
−		+
−	~~[[File:J2K_Himalaya.zip \| Glacier module extension for~~ the ~~J2000 model]]~~	+
−		+
−	~~<span style="color~~:~~red;">Important Note:~~	+
−		+
−	~~J2K_Himalaya.zip contains a J2K_Himalaya.jar file which is an extension of the glacier module to the standard J2000 hydrological model. Therefore, this jar file has to be copied in the lib folder (c~~:\jams\components) [if your basin has glaciers]. The lib folder already contains a J2K_base.jar file when you download the JAMS software along with the test dataset of the Gelberg catchment. You can also keep the J2K_Himalaya.jar file in different locations, but the path has to be defined when the model is run first time by the following steps:	+
−		+
−	~~[JAMS Launcher(or JAMS Builder)-->>Edit-->>Edit perferences]. A new window 'JAMS preferences' will appear. You need to locate the location of the *jar file by clicking + sign).~~	+

	===Folders and files===		===Folders and files===

Santosh: /* Bibliography and Further Reading */

2020-01-10T08:03:58Z

Bibliography and Further Reading

← Older revision		Revision as of 08:03, 10 January 2020
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	Nepal, S. 2012 Evaluating Upstream-Downstream linkages of Hydrological Dynamics in the Himalayan region. PhD Theis. Friedrich Schiller University of Jena, Jena, Germany		Nepal, S. 2012 Evaluating Upstream-Downstream linkages of Hydrological Dynamics in the Himalayan region. PhD Theis. Friedrich Schiller University of Jena, Jena, Germany
		+
		+	Nepal, S., Krause, P., Flügel, W. A., Fink, M., & Fischer, C. (2014). Understanding the hydrological system dynamics of a glaciated alpine catchment in the Himalayan region using the J2000 hydrological model. Hydrological Processes, 28(3), 1329-1344.

	Nepal, S., Adiga, P. B., 2007. Linkages between watershed and irrigation, a case study on management practices of Farmer Managed Irrigation System (FMIS), Argali, Palpa, Nepal. In: Proceedings of the Fourth International Seminar on Irrigation in Transition: Interacting with Internal and External Factors and Setting the Strategic Actions, Kathmandu, Nepal.		Nepal, S., Adiga, P. B., 2007. Linkages between watershed and irrigation, a case study on management practices of Farmer Managed Irrigation System (FMIS), Argali, Palpa, Nepal. In: Proceedings of the Fourth International Seminar on Irrigation in Transition: Interacting with Internal and External Factors and Setting the Strategic Actions, Kathmandu, Nepal.

Santosh: /* Workspace for input data */

2018-12-18T03:55:56Z

Workspace for input data

← Older revision		Revision as of 03:55, 18 December 2018
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	<span style="color:red;">Important Note:		<span style="color:red;">Important Note:

−	~~J2000Himalaya~~.zip contains a ~~J2000Himalaya~~.jar file which is an extension of the glacier module to the standard J2000 hydrological model. Therefore, this jar file has to be copied in the lib folder (~~\Program Files~~\jams\~~lib~~) [if your basin has glaciers]. The lib folder already contains a ~~J2K~~.jar file when you download the JAMS software along with the test dataset of the Gelberg catchment. You can also keep the ~~J2000Himalaya~~.jar file in different locations, but the path has to be defined when the model is run first time by the following steps:	+	J2K_Himalaya.zip contains a J2K_Himalaya.jar file which is an extension of the glacier module to the standard J2000 hydrological model. Therefore, this jar file has to be copied in the lib folder (c:\jams\components) [if your basin has glaciers]. The lib folder already contains a J2K_base.jar file when you download the JAMS software along with the test dataset of the Gelberg catchment. You can also keep the J2K_Himalaya.jar file in different locations, but the path has to be defined when the model is run first time by the following steps:

	[JAMS Launcher(or JAMS Builder)-->>Edit-->>Edit perferences]. A new window 'JAMS preferences' will appear. You need to locate the location of the *jar file by clicking + sign).		[JAMS Launcher(or JAMS Builder)-->>Edit-->>Edit perferences]. A new window 'JAMS preferences' will appear. You need to locate the location of the *jar file by clicking + sign).

Nsk at 13:19, 25 January 2018

2018-01-25T13:19:18Z

← Older revision		Revision as of 13:19, 25 January 2018
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	The detailed description of the modelling systems is provided in many publications. Some of the important publications are:		The detailed description of the modelling systems is provided in many publications. Some of the important publications are:
−	(Krause, 2001,; Krause 2002,; Krause, 2010,; Nepal, 2012; Kralisch and Krause 2006,; Kralisch et.al. 2007). Some of the publications can be also accessed from this link: http://jams.uni-jena.de/~~index.php?id=5582&L=2~~	+	(Krause, 2001,; Krause 2002,; Krause, 2010,; Nepal, 2012; Kralisch and Krause 2006,; Kralisch et.al. 2007). Some of the publications can be also accessed from this link: http://jams.uni-jena.de/documentation

	= Dataset preparation=		= Dataset preparation=
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	Hydrological Response Units (HRUs) are the modelling entities for the J2000 hydrological model. HRUs are 'spatial model entities which are distributed, heterogeneous structured entities having a common climate, land-use, soil, and geology controlling their hydrological dynamics' (Flügel 1995). The areas which comprise similar properties such as topography (slope, aspects), land-use, soil and geology, and behave similarly in their hydrological response, are merged to develop a HRU. The variation of the hydrological process dynamics within the HRU should be relatively small compared to the dynamics in a different HRU (Flügel 1995).		Hydrological Response Units (HRUs) are the modelling entities for the J2000 hydrological model. HRUs are 'spatial model entities which are distributed, heterogeneous structured entities having a common climate, land-use, soil, and geology controlling their hydrological dynamics' (Flügel 1995). The areas which comprise similar properties such as topography (slope, aspects), land-use, soil and geology, and behave similarly in their hydrological response, are merged to develop a HRU. The variation of the hydrological process dynamics within the HRU should be relatively small compared to the dynamics in a different HRU (Flügel 1995).

−	The process of delineating HRUs is described in the following tutorial. ~~[[GRASS~~-~~HRU\|GRASS-HRU tutorial]]~~. You need to prepare the following file for the HRU delineation.	+	The HRU can be delinated via web browser. The process of delineating HRUs is described in the following tutorial http://jams.uni-jena.de/ilmswiki/index.php/WebHRU_Tutorial
		+
		+	Username/password: Student6
		+
		+
		+	You need to prepare the following file for the HRU delineation.

	*Digital Elevation Model (DEM)		*Digital Elevation Model (DEM)
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	\|alphaIce\|\| radiation melt factor for ice \|\| 0 to 5 \|\| 0.2		\|alphaIce\|\| radiation melt factor for ice \|\| 0 to 5 \|\| 0.2
	\|-		\|-
−	\|kIce\|\| ~~melt factor by sensible heat~~\|\| 0 to 50 \|\| 5	+	\|kIce\|\| routing coefficient for glaicer icemelt \|\| 0 to 50 \|\| 5
	\|-		\|-
−	\|kSnow\|\| melt ~~factor by liquid precipitation~~ \|\| 0 to 50 \|\| 5	+	\|kSnow\|\| routing coefficient for snow melt \|\| 0 to 50 \|\| 5
	\|-		\|-
−	\|kRain\|\| ~~melt factor by soil heat flow~~ \|\| 0 to 50 \|\| 3	+	\|kRain\|\| routing coefficient for rain runoff \|\| 0 to 50 \|\| 3
	\|-		\|-
	\|}		\|}
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	'''soilMaxDPS''' influences the water stored in depression areas. The higher the value of this parameter, the higher the amount of water to be stored as depression storage and the smaller the amount of water available for overland flow.		'''soilMaxDPS''' influences the water stored in depression areas. The higher the value of this parameter, the higher the amount of water to be stored as depression storage and the smaller the amount of water available for overland flow.

−	'''soilLinRed''' reduces the amount of evapotranspiration rate. A lower value will ~~reduce~~ the evapotranspiration ~~to a lower~~ rate.	+	'''soilLinRed''' reduces the amount of evapotranspiration rate. A lower value will increase the actual evapotranspiration (i.e. actET rate will be slow).

	'''soilMaxInfSummer''', '''soilMaxInfWinter''', and '''soilMaxInfSnow''' influence the maximum infiltration rate into the saturated (soil water) and unsaturated (groundwater) zones. The lower value of these parameters allow only a part of rainfall and snowmelt to enter into the unsaturated zone (The value 20 means that only 20 mm rainfall and snowmelt is allowed to go through the soil water module per time step). In such cases, overland flow would be higher as the most of the input drains as surface runoff. It is considered that the ''soilMaxInfSummer'' is slightly lower than winter because the soil is more saturated during the rainy-summer period. The ''soilMaxInfSnow'' is considered lowest among the three because of the frozen soil condition in the snow-occurring environment.		'''soilMaxInfSummer''', '''soilMaxInfWinter''', and '''soilMaxInfSnow''' influence the maximum infiltration rate into the saturated (soil water) and unsaturated (groundwater) zones. The lower value of these parameters allow only a part of rainfall and snowmelt to enter into the unsaturated zone (The value 20 means that only 20 mm rainfall and snowmelt is allowed to go through the soil water module per time step). In such cases, overland flow would be higher as the most of the input drains as surface runoff. It is considered that the ''soilMaxInfSummer'' is slightly lower than winter because the soil is more saturated during the rainy-summer period. The ''soilMaxInfSnow'' is considered lowest among the three because of the frozen soil condition in the snow-occurring environment.
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	'''soilOutLPS''' influences the Interflow 2 (RD2) component. The lower value will allocate more water to be outflowed from LPS and thereby increasing the RD2 component.		'''soilOutLPS''' influences the Interflow 2 (RD2) component. The lower value will allocate more water to be outflowed from LPS and thereby increasing the RD2 component.

−	'''soilLatVertLPS''' is one of the very sensitive parameters in the soil water module. It distributes the inflow (after the infiltration) between ~~vertical~~ (interflow 1) and percolation. The higher value will allocate higher amount of inflow to the Interflow 2 (and less inflow to be percolated to the groundwater). The higher value will increase in Interflow 2 component and at the same time, the groundwater contribution (RG1 and RG2) will be reduced.	+	'''soilLatVertLPS''' is one of the very sensitive parameters in the soil water module. It distributes the inflow (after the infiltration) between RD2 (interflow 1) and percolation. The higher value will allocate higher amount of inflow to the Interflow 1 (and less inflow to be percolated to the groundwater). The higher value will increase in Interflow 1 and access water to RD1 component and at the same time the groundwater contribution (RG1 and RG2) will be reduced substantially.

	'''soilMaxPerc''' controls the percolation rate to the groundwater per time step. The higher (eg. 20) value indicates that maximum 20 mm equivalent water is allowed to go to the groundwater. The higher value will increase the groundwater contribution (RG1 and RG2) and at the same time decrease RD2 component at a higher magnitude. This also decrease the RD1 but to a lesser extent.		'''soilMaxPerc''' controls the percolation rate to the groundwater per time step. The higher (eg. 20) value indicates that maximum 20 mm equivalent water is allowed to go to the groundwater. The higher value will increase the groundwater contribution (RG1 and RG2) and at the same time decrease RD2 component at a higher magnitude. This also decrease the RD1 but to a lesser extent.

Santosh: /* Workspace for input data */

2014-09-17T08:48:21Z

Workspace for input data

← Older revision		Revision as of 08:48, 17 September 2014
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	[[File:J2000_DudhKosi_Tutorial.zip \| J2000 DudhKosi model workspace directory]]		[[File:J2000_DudhKosi_Tutorial.zip \| J2000 DudhKosi model workspace directory]]

−	[[File:~~J2000Himalaya~~.zip \| Glacier module extension for the J2000 model]]	+	[[File:J2K_Himalaya.zip \| Glacier module extension for the J2000 model]]

	<span style="color:red;">Important Note:		<span style="color:red;">Important Note:

DanielS: /* Hydro-geological parameter file */

2013-01-22T21:13:38Z

Hydro-geological parameter file

← Older revision		Revision as of 21:13, 22 January 2013
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	The storage capacity of the upper (RG1) and lower (RG2) groundwater storage can be estimated by analyzing geological information of the area. The storage capacity is normally controlled by the geological formation, rock types, origin and nature of rocks and permeability. These values are expressed as maximum storage volume in mm/day of each storage type. The storage coefficient values (RG1_k and RG2_k) are used as a general recession co-efficient of two storage. These are expressed as retention time in days in the particular storage. The recession is further controlled by a flexible calibration parameter within the model.		The storage capacity of the upper (RG1) and lower (RG2) groundwater storage can be estimated by analyzing geological information of the area. The storage capacity is normally controlled by the geological formation, rock types, origin and nature of rocks and permeability. These values are expressed as maximum storage volume in mm/day of each storage type. The storage coefficient values (RG1_k and RG2_k) are used as a general recession co-efficient of two storage. These are expressed as retention time in days in the particular storage. The recession is further controlled by a flexible calibration parameter within the model.

−	The detailed description of the hydro-geological parameter is provided here: [[Hydrogeo_parameter\|How to derive hydro-geological parameter file]]	+	The detailed description of the hydro-geological parameter is provided here: [[Hydrogeo_parameter\|How to derive a hydro-geological parameter file]]

	===HRUs and Reach parameter files===		===HRUs and Reach parameter files===

DanielS: /* Land cover parameter file */

2013-01-22T21:02:32Z

Land cover parameter file

← Older revision		Revision as of 21:02, 22 January 2013
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	The land-use parameter file requires information about the land-use and land-cover of a catchment which controls the different aspects of hydrology. Such information can be derived from literature where the spatial information about the land-use and land-cover is provided. Alternatively, such information can be estimated by using remote sensing images and subsequent classification. The J2000 hydrological model requires major classification of land-use and land-cover which affects the hydrological dynamics.		The land-use parameter file requires information about the land-use and land-cover of a catchment which controls the different aspects of hydrology. Such information can be derived from literature where the spatial information about the land-use and land-cover is provided. Alternatively, such information can be estimated by using remote sensing images and subsequent classification. The J2000 hydrological model requires major classification of land-use and land-cover which affects the hydrological dynamics.

−	[[Land_use_parameter\|How to prepare land cover parameter file]]	+	[[Land_use_parameter\|How to prepare a land cover parameter file]]

	===Hydro-geological parameter file===		===Hydro-geological parameter file===

DanielS: /* Soil parameter file */

2013-01-22T21:01:55Z

Soil parameter file

← Older revision		Revision as of 21:01, 22 January 2013
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	The soil parameter file is one of the important parameter files which needs a range of information as shown in the table above to produce a comprehensive characterization regarding water holding capacity of different soil types. For this, the texture information of soil types of different soil horizons are required. A detailed description of how to produce a soil parameter file is provided here:		The soil parameter file is one of the important parameter files which needs a range of information as shown in the table above to produce a comprehensive characterization regarding water holding capacity of different soil types. For this, the texture information of soil types of different soil horizons are required. A detailed description of how to produce a soil parameter file is provided here:

−	[[Soil_parameterization\|How to prepare soil parameter file]]	+	[[Soil_parameterization\|How to prepare a soil parameter file]]

	===Land cover parameter file===		===Land cover parameter file===

DanielS: /* Description of the test dataset */

2013-01-22T20:17:47Z

Description of the test dataset

← Older revision		Revision as of 20:17, 22 January 2013
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	= Description of the test dataset =		= Description of the test dataset =

−	This tutorial is accompanied by the test dataset of the Dudh Kosi river basin. The Dudh Kosi river basin is a sub-catchment of the Kosi river basin, Nepal located in the Himalayan region. The Department of Hydrology Meteorology (DHM), Government of Nepal, collects and manages the hydro-meteorological data. Six precipitation and one climate station are available in the Dudh Kosi river basin. Since the measured data is not allowed to be distributed publicly, the data provided here is not from the real stations. These data are from virtual stations in which ~~the data~~ the regionalized data were used and further processed with random errors. These input ~~dataset~~ are provided below along with the workspace directory to run the J2000 model. Users are expected to use the tutorial along with the test data to understand different aspects of the J2000 modelling system and also aim to prepare their own datasets to run the model. You should contact the [http://dhm.gov.np/ DHM Nepal] directly to get the real observed data from the stations. The modelling results with the measured data from DHM, Nepal can be found in the PhD dissertation (Nepal, 2012).	+	This tutorial is accompanied by the test dataset of the Dudh Kosi river basin. The Dudh Kosi river basin is a sub-catchment of the Kosi river basin, Nepal located in the Himalayan region. The Department of Hydrology Meteorology (DHM), Government of Nepal, collects and manages the hydro-meteorological data. Six precipitation and one climate station are available in the Dudh Kosi river basin. Since the measured data is not allowed to be distributed publicly, the data provided here is not from the real stations. These data are from virtual stations in which the regionalized data were used and further processed with random errors. These input datasets are provided below along with the workspace directory to run the J2000 model. Users are expected to use the tutorial along with the test data to understand different aspects of the J2000 modelling system and also aim to prepare their own datasets to run the model. You should contact the [http://dhm.gov.np/ DHM Nepal] directly to get the real observed data from the stations. The modelling results with the measured data from DHM, Nepal can be found in the PhD dissertation (Nepal, 2012).

−	To understand the motivation, objectives, methodological approach and the study area adopted for the hydrological system dynamics of the Dudh Kosi river basin, the PhD thesis can be referred for further details.	+	To understand the motivation, objectives, methodological approach and the study area adopted for the hydrological system dynamics of the Dudh Kosi river basin, the PhD thesis can also be referred to for further details.

	= The J2000 model=		= The J2000 model=