Tutorials Data Himalaya - Revision history

Santosh: /* Workspace for input data */

2014-07-09T09:07:02Z

Workspace for input data

← Older revision		Revision as of 09:07, 9 July 2014
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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 J2K.jar file when users download the JAMS software along with the test dataset of the Gelberg catchment. Users 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:	+	J2000Himalaya.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 (\Program Files\jams\lib) [if your basin has glaciers]. The lib folder already contains J2K.jar file when users download the JAMS software along with the test dataset of the Gelberg catchment. Users 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:

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

Santosh: /* Workspace for input data */

2014-07-09T09:06:23Z

Workspace for input data

← Older revision		Revision as of 09:06, 9 July 2014
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	[[File:J2000Himalaya.zip \| Glacier module extension for the J2000 model]]		[[File:J2000Himalaya.zip \| Glacier module extension for the J2000 model]]
		+
		+	<span style="color:red;">Important Note: Both J2000_DudhKosi_Tutorial.zip and J2000Himalaya.zip files have been updated on 9 July 2014.
		+

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

Santosh at 10:28, 20 November 2012

2012-11-20T10:28:24Z

← Older revision		Revision as of 10:28, 20 November 2012
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	http://ilms.uni-jena.de/ilmswiki/index.php/Applying_the_J2000_model		http://ilms.uni-jena.de/ilmswiki/index.php/Applying_the_J2000_model

−	After short time, this page will be removed!!	+	After a short time, this page will be removed!!

Santosh at 15:40, 19 November 2012

2012-11-19T15:40:11Z

← Older revision		Revision as of 15:40, 19 November 2012
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	[[pt:Tutoriais_Dados_do_Himalaya]]		[[pt:Tutoriais_Dados_do_Himalaya]]
	This page has been moved to:		This page has been moved to:
−	http://ilms.uni-jena.de/ilmswiki/index.php/~~Application_J2000_model~~	+	http://ilms.uni-jena.de/ilmswiki/index.php/Applying_the_J2000_model
		+
		+	After short time, this page will be removed!!
		+

	This tutorial has been prepared to use the J2000 hydrological model for hydrological system analysis of a river catchment. A test dataset of the Dudh Kosi river basin have been provided along with the tutorial. The Dudh Kosi river basin was used for the hydrological system analysis by using the J2000 hydrological model as a part of the PhD research (Nepal, 2012). The information provided here is largely based on this study [[http://www.db-thueringen.de/servlets/DocumentServlet?id=20854 PhD Thesis]]. Users can use the test data to get familiar with the model application. At the same time, users can prepare their own dataset to simulate the hydrological behavior of any catchment by following this tutorial. A separate section is provided at the end of the tutorial to use the J2000 model for a new catchment. [[http://ilms.uni-jena.de/ilmswiki/index.php/Tutorials_Data_Himalaya#Setting_up_a_new_model How to set up a new model]]. Similarly, the information about the users forum for the Integrated Landscape Management System (ILMS) application is also provided at the end which can be used as a discussion forum to discuss issues related to the modelling application. Via the forum, the model developers and users can be reached.		This tutorial has been prepared to use the J2000 hydrological model for hydrological system analysis of a river catchment. A test dataset of the Dudh Kosi river basin have been provided along with the tutorial. The Dudh Kosi river basin was used for the hydrological system analysis by using the J2000 hydrological model as a part of the PhD research (Nepal, 2012). The information provided here is largely based on this study [[http://www.db-thueringen.de/servlets/DocumentServlet?id=20854 PhD Thesis]]. Users can use the test data to get familiar with the model application. At the same time, users can prepare their own dataset to simulate the hydrological behavior of any catchment by following this tutorial. A separate section is provided at the end of the tutorial to use the J2000 model for a new catchment. [[http://ilms.uni-jena.de/ilmswiki/index.php/Tutorials_Data_Himalaya#Setting_up_a_new_model How to set up a new model]]. Similarly, the information about the users forum for the Integrated Landscape Management System (ILMS) application is also provided at the end which can be used as a discussion forum to discuss issues related to the modelling application. Via the forum, the model developers and users can be reached.

Santosh at 15:36, 19 November 2012

2012-11-19T15:36:58Z

← Older revision		Revision as of 15:36, 19 November 2012
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	[[pt:Tutoriais_Dados_do_Himalaya]]		[[pt:Tutoriais_Dados_do_Himalaya]]
		+	This page has been moved to:
		+	http://ilms.uni-jena.de/ilmswiki/index.php/Application_J2000_model
		+
	This tutorial has been prepared to use the J2000 hydrological model for hydrological system analysis of a river catchment. A test dataset of the Dudh Kosi river basin have been provided along with the tutorial. The Dudh Kosi river basin was used for the hydrological system analysis by using the J2000 hydrological model as a part of the PhD research (Nepal, 2012). The information provided here is largely based on this study [[http://www.db-thueringen.de/servlets/DocumentServlet?id=20854 PhD Thesis]]. Users can use the test data to get familiar with the model application. At the same time, users can prepare their own dataset to simulate the hydrological behavior of any catchment by following this tutorial. A separate section is provided at the end of the tutorial to use the J2000 model for a new catchment. [[http://ilms.uni-jena.de/ilmswiki/index.php/Tutorials_Data_Himalaya#Setting_up_a_new_model How to set up a new model]]. Similarly, the information about the users forum for the Integrated Landscape Management System (ILMS) application is also provided at the end which can be used as a discussion forum to discuss issues related to the modelling application. Via the forum, the model developers and users can be reached.		This tutorial has been prepared to use the J2000 hydrological model for hydrological system analysis of a river catchment. A test dataset of the Dudh Kosi river basin have been provided along with the tutorial. The Dudh Kosi river basin was used for the hydrological system analysis by using the J2000 hydrological model as a part of the PhD research (Nepal, 2012). The information provided here is largely based on this study [[http://www.db-thueringen.de/servlets/DocumentServlet?id=20854 PhD Thesis]]. Users can use the test data to get familiar with the model application. At the same time, users can prepare their own dataset to simulate the hydrological behavior of any catchment by following this tutorial. A separate section is provided at the end of the tutorial to use the J2000 model for a new catchment. [[http://ilms.uni-jena.de/ilmswiki/index.php/Tutorials_Data_Himalaya#Setting_up_a_new_model How to set up a new model]]. Similarly, the information about the users forum for the Integrated Landscape Management System (ILMS) application is also provided at the end which can be used as a discussion forum to discuss issues related to the modelling application. Via the forum, the model developers and users can be reached.

Santosh at 14:23, 19 November 2012

2012-11-19T14:23:21Z

← Older revision		Revision as of 14:23, 19 November 2012
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	[[pt:Tutoriais_Dados_do_Himalaya]]		[[pt:Tutoriais_Dados_do_Himalaya]]
−	~~The~~ tutorial has been prepared to use the J2000 hydrological model for hydrological system analysis of a river catchment. A test dataset of the Dudh Kosi river basin have been provided along with the tutorial. The Dudh Kosi river basin was used for the hydrological system analysis by using the J2000 hydrological model as a part of the PhD research (Nepal, 2012). The information provided here is largely based on this study [[http://www.db-thueringen.de/servlets/DocumentServlet?id=20854 PhD Thesis]]. Users can use the test data to get familiar with the model application. At the same time, users can prepare their own dataset to simulate the hydrological behavior of any catchment by following this tutorial. A separate section is provided at the end of the tutorial to use the J2000 model for a new catchment. [[http://ilms.uni-jena.de/ilmswiki/index.php/Tutorials_Data_Himalaya#Setting_up_a_new_model How to set up a new model]]. Similarly, the information about the users forum for the Integrated Landscape Management System (ILMS) application is also provided at the end which can be used as a discussion forum to discuss issues related to the modelling application. Via the forum, the model developers and users can be reached.	+	This tutorial has been prepared to use the J2000 hydrological model for hydrological system analysis of a river catchment. A test dataset of the Dudh Kosi river basin have been provided along with the tutorial. The Dudh Kosi river basin was used for the hydrological system analysis by using the J2000 hydrological model as a part of the PhD research (Nepal, 2012). The information provided here is largely based on this study [[http://www.db-thueringen.de/servlets/DocumentServlet?id=20854 PhD Thesis]]. Users can use the test data to get familiar with the model application. At the same time, users can prepare their own dataset to simulate the hydrological behavior of any catchment by following this tutorial. A separate section is provided at the end of the tutorial to use the J2000 model for a new catchment. [[http://ilms.uni-jena.de/ilmswiki/index.php/Tutorials_Data_Himalaya#Setting_up_a_new_model How to set up a new model]]. Similarly, the information about the users forum for the Integrated Landscape Management System (ILMS) application is also provided at the end which can be used as a discussion forum to discuss issues related to the modelling application. Via the forum, the model developers and users can be reached.

	The different components of the ILMS software (ILMSimage, ILMSgis, ILMSmodel, and ILMSexplore) can be downloaded from		The different components of the ILMS software (ILMSimage, ILMSgis, ILMSmodel, and ILMSexplore) can be downloaded from

DanielS: /* Glacier module */

2012-11-17T15:21:34Z

Glacier module

← Older revision		Revision as of 15:21, 17 November 2012
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−	The seasonal or fresh snow in glacier areas ~~are~~ processed using the J2KProcessSnow as described in the Snow Module in the previous section. When snow storage is zero in the glacier HRU, the glacier ice melt process begins using the enhanced degree day factor. The energy for glacier ice melt is represented by the degree-day factor which is the general function of temperature and radiation (''meltFactorIce'' and ''alphaIce''). The melt rate is further adapted to slope and aspect of the specific HRU. The model also segregates the debris covered and non-debris covered glacier HRU by using the slope of HRUs. If the slope is higher than 30 degree, the glacier HRU is considered as non-debris covered glaciers. In the debris covered glacier HRU, the ice melt is further controlled by the calibration parameter ''debrisFactor''. The outcome from the glacier area is snowmelt (from fresh snow), glacier ice melt and rain runoff (rain-on-glaciers). All these three melt runoff are routed through the glacier areas using three different routing for snow, ice and rain (''kSnow, KIce'' and ''kRain''). At the end, the glacier melt, which is the product of three different runoff (snowmelt, icemelt and rain runoff), are supplied to nearby reach as overland flow (RD1).	+	The seasonal or fresh snow in glacier areas is processed using the J2KProcessSnow as described in the Snow Module in the previous section. When snow storage is zero in the glacier HRU, the glacier ice melt process begins using the enhanced degree day factor. The energy for glacier ice melt is represented by the degree-day factor which is the general function of temperature and radiation (''meltFactorIce'' and ''alphaIce''). The melt rate is further adapted to slope and aspect of the specific HRU. The model also segregates the debris covered and non-debris covered glacier HRU by using the slope of HRUs. If the slope is higher than 30 degree, the glacier HRU is considered as non-debris covered glaciers. In the debris covered glacier HRU, the ice melt is further controlled by the calibration parameter ''debrisFactor''. The outcome from the glacier area is snowmelt (from fresh snow), glacier ice melt and rain runoff (rain-on-glaciers). All these three melt runoff are routed through the glacier areas using three different routing for snow, ice and rain (''kSnow, KIce'' and ''kRain''). At the end, the glacier melt, which is the product of three different runoff (snowmelt, icemelt and rain runoff), are supplied to nearby reach as overland flow (RD1).

	'''Relevancy in modelling:'''		'''Relevancy in modelling:'''

DanielS: /* Snow module */

2012-11-16T15:59:46Z

Snow module

← Older revision		Revision as of 15:59, 16 November 2012
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	If the melt temperature exceeds the temperature limit value ( ''baseTemp''), the snowmelt process begins. The ''snowColdContent'' parameter takes into account the cold content of the snow pack. The temperature of the snow pack has to be close to 0 to start the snowmelt process. Negative air temperatures are accumulated and decreased only by positive temperatures and to realize the snowmelt process.		If the melt temperature exceeds the temperature limit value ( ''baseTemp''), the snowmelt process begins. The ''snowColdContent'' parameter takes into account the cold content of the snow pack. The temperature of the snow pack has to be close to 0 to start the snowmelt process. Negative air temperatures are accumulated and decreased only by positive temperatures and to realize the snowmelt process.

−	The melt energy required for the calculation of potential snow melt is supplied in the form of sensible heat by air temperature (''t_factor''), energy input from precipitation as rain (''r_factor'') and input due to soil heat flow (''g_factor''). This potential melt rate is further modified according to slope and aspect of the HRU. The snow pack is able to store is liquid water (as supplied in the form of potential snow melt) in its pores up to a certain density limit (''CritDens''). This storage capacity is lost almost completely and irreversibly when reaching a certain critical density of the snowpack (i.e. amount of free water in relation to the total snow-water equivalent between 40% and 45%) according to (Bertle 1966; Herrmann 1976). The resulting snow snowmelt is supplied to the soil module.	+	The melt energy required for the calculation of potential snow melt is supplied in the form of sensible heat by air temperature (''t_factor''), energy input from precipitation as rain (''r_factor'') and input due to soil heat flow (''g_factor''). This potential melt rate is further modified according to slope and aspect of the HRU. The snow pack is able to store liquid water (as supplied in the form of potential snow melt) in its pores up to a certain density limit (''CritDens''). This storage capacity is lost almost completely and irreversibly when reaching a certain critical density of the snowpack (i.e. amount of free water in relation to the total snow-water equivalent between 40% and 45%) according to (Bertle 1966; Herrmann 1976). The resulting snow snowmelt is supplied to the soil module.

	'''Relevancy in modelling'''		'''Relevancy in modelling'''

DanielS: /* Interception module */

2012-11-16T15:23:46Z

Interception module

← Older revision		Revision as of 15:23, 16 November 2012
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	Interception is a process during which the precipitation is stored in leaves, and other open surfaces of vegetation. This process is identified as important components of a hydrological cycle that can affect the water balance components. Canopy and residue interception are considered losses to the system, as any rainfall intercepted by either of these components will subsequently be reduced by the evapotranspiration process. The interception module uses a simple storage approach according to Dickinson (1984), which calculates a maximum interception storage capacity based on the Leaf Area Index (LAI) of the particular type of land cover. The model gets the LAI information of different seasons from the land-cover parameter file. When the maximum storage is reached, the surplus is passed as throughfall to the soil module.		Interception is a process during which the precipitation is stored in leaves, and other open surfaces of vegetation. This process is identified as important components of a hydrological cycle that can affect the water balance components. Canopy and residue interception are considered losses to the system, as any rainfall intercepted by either of these components will subsequently be reduced by the evapotranspiration process. The interception module uses a simple storage approach according to Dickinson (1984), which calculates a maximum interception storage capacity based on the Leaf Area Index (LAI) of the particular type of land cover. The model gets the LAI information of different seasons from the land-cover parameter file. When the maximum storage is reached, the surplus is passed as throughfall to the soil module.

−	The parameters as shown in the figure above have a different value, depending on the type of the intercepted precipitation (rain or snow). It is ~~because~~ the maximum interception capacity of snow is noticeably higher than of liquid precipitation.	+	The parameters as shown in the figure above have a different value, depending on the type of the intercepted precipitation (rain or snow). This is due to the fact that the maximum interception capacity of snow is noticeably higher than that of a liquid precipitation.

	'''Relevancy in modelling'''		'''Relevancy in modelling'''

DanielS: /* Precipitation distribution module */

2012-11-16T15:05:15Z

Precipitation distribution module

← Older revision		Revision as of 15:05, 16 November 2012
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	These parameters are considered as non-flexible parameters and not necessarily placed in the JAMS framework as tunable parameters.		These parameters are considered as non-flexible parameters and not necessarily placed in the JAMS framework as tunable parameters.

−	In the J2000 modelling system, the precipitation is first distributed between rain and snow depending upon the air temperature. Two calibration parameters (''Trans'', and ''Trs'') are used where ''Trs'' is base temperature and ''Trans'' is a temperature range (upper and lower boundary) above and below the base temperature. In order to determine the amount snow and rain, it is assumed that precipitation below a certain threshold temperatures results in total snow precipitation and exceeding a second threshold results in total rainfall as precipitation. In the range (''Trans'') between those threshold temperatures, mixed precipitation occurs.	+	In the J2000 modelling system, the precipitation is first distributed between rain and snow depending upon the air temperature. Two calibration parameters (''Trans'', and ''Trs'') are used where ''Trs'' is base temperature and ''Trans'' is a temperature range (upper and lower boundary) above and below the base temperature. In order to determine the amount of snow and rain, it is assumed that precipitation below a certain threshold temperatures results in total snow precipitation and exceeding a second threshold results in total rainfall as precipitation. In the range (''Trans'') between those threshold temperatures, mixed precipitation occurs.

	'''Relevancy in modelling'''		'''Relevancy in modelling'''
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	The detailed description of this module along with the algorithm as defined in the model source code is provided in: [[http://jams.uni-jena.de/ilmswiki/index.php/J2000_modules_in_detail#Precipitation_distribution_module Precipitation distribution module]]		The detailed description of this module along with the algorithm as defined in the model source code is provided in: [[http://jams.uni-jena.de/ilmswiki/index.php/J2000_modules_in_detail#Precipitation_distribution_module Precipitation distribution module]]
−

	===Interception module===		===Interception module===