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Messages - Diwan

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Study material / Machine Learning study materials
« on: July 18, 2018, 11:46:50 AM »
Dear all


Some useful study materials for machine learning is available at

Announcements / PhD Position
« on: July 13, 2018, 12:07:24 AM »
Dear all


Three well-paid and exciting PhD projects are available within the Environmental Hydrology and Water Resources Group, University of Melbourne.

1) Modelling shoreline vegetation to inform operations of Lake Victoria, NSW.

2) Understanding and managing climate risks to waterway health in unregulated river systems.

3) Improving flow-ecology models to improve environmental water management in a changing climate.

Last date by 29th July 2018

Announcements / NITK-Temporary Faculty Position for ODD Sem_2018-19
« on: July 05, 2018, 03:35:39 PM »
Dear all


Appointment of Temporary Faculty on semester basis in various departments will be held on 13th July, 2018 (friday) in the Institute premises. Eligibility is Ph.D/ M.E./ M.Tech Degree.
For more details:

Announcements / Position: Project Assistant
« on: June 13, 2018, 03:23:48 PM »
Dear all


Three project scientist/assistant positions available at Prof. Dhanya's research group (IIT Delhi) ( Highly motivated students with good research aptitude and knowledge in hydrological modeling, stochastic hydrology, mathematical modeling are encouraged to apply. Prefer ME/M.Tech degree (in Water Resources Engg./Agricultural) holders. Mail to with their CV and Skype ID, as early as possible.

Dear all


Call for proposals under this scheme will be open from 1st May to 30th June, 2018. Eligible researchers are encouraged to submit their proposals through online system (

To know more about the scheme, kindly visit the link below:

Dear all


The India-UK Water Centre is inviting applications from Indian and UK water scientists to participate in a workshop on Advancing Drought Monitoring, Prediction, and Management Capabilities to be held in Lancaster, UK 18th – 20th September 2018.

Last date for application: 17 May 2018

For more details;

Dear All


All authors of the papers accepted for the conference will be given the opportunity to publish their work in supporting journals.

The conference will be supported by the following journals:

Conference details:

International conference on sustainable water resources - Innovation and Impacts​, 6 - 8 Sep 2018 at VIT, Vellore, India

Abstract Submission Closes           30th April, 2018
Full Paper Submission Closes   30th July, 2018
Early Bird Registration Begins   1st June, 2018
Early Bird Registration Closes   5th August, 2018
Regular Registration Closes           30th August, 2018

For more details:

Dear all


It will take place on Thursday, April 19th, 2018, from 7:30 PM to 09:00 PM IST. The topics includes:

Household economic burden from seawater intrusion in coastal urban areas

Synergy of climate change and local pressures on saltwater intrusion in coastal urban areas: Effective adaptation for policy planning

Water option contracts for climate change adaptation in Santiago, Chile

Adapting to Climate Change in Rapidly Urbanizing River Basins: Insights from a multiple-concerns, multiple-stressors, and multi-level approach

Assessing the economic impact of a low-cost water-saving irrigation technology in Indian Punjab: The case of tensiometer

Water Resource Management Under Changing Climate in Angola's Coastal Settlements


Mutasem Fadel, American University of Beirut
Oscar Melo, Pontificia Universidad Católica de Chile
Veena Srinivasan, Ashoka Trust for Research in Ecology and the Environment
Kamal Vatta, Columbia Water Center, India
Allan Cain, Development Workshop, Angola
Charlotte MacAlister, International Development Research Centre

Registration link :

Models / Re: [VIC] routing energy balance outputs with subdaily fluxes
« on: February 20, 2018, 10:10:18 AM »
Hi Riaz

Ds, Dsmax, Ws, binf and soil layer depths are main calibration parameter for the model. (other variables can be calibrated eg., snow partitioning, energy balance etc.)

some points for understanding the parameter and typical range
1) Higher value of Ds,[Fraction of Dsmax(0-~30, in mm/day)] the baseflow will be higher at lower water
content in lowest soil layer ( 0 - 1, units in percentage)

2) Higher value of Ws will raise the water content required for rapidly
increasing, non-linear baseflow, which will tend to delay runoff
peaks (0 - 1, units in percentage)

3) Higher value of binf gives lower infiltration and yields higher
surface runoff (0 - 0.4)

4) Soil depth effects many model variables (0.1 to 1.5, units in meter)

5) For runoff considerations, thicker soil depths slow down (baseflow
dominated) seasonal peak flows and increase the loss due to

You may fix the value by trail and error based on Ksat for the particular grids and knowledge on the local condition


Note: Kindly post your question with relevant topics. If you are not find any existing topic relevant to your query you can start a new topic. You can use this thread for general queries and other information related to VIC,205.75.html 

Data / MOSDAC - Satellite based weather data and information services
« on: February 15, 2018, 09:09:57 AM »
Dear all


MOSDAC - the Meteorological and Oceanographic Satellite Data Archival Centre is a data repository for the missions of the Indian Space Research Organisation (ISRO) and Government of India, dealing with meteorology, oceanography and tropical water cycles. Data acquired from missions is disseminated in near real time from Space Applications Centre (SAC), Ahmedabad through the MOSDAC web site. Various in-situ and satellite data are also available through this site.

Models / Re: [VIC] routing energy balance outputs with subdaily fluxes
« on: February 14, 2018, 04:15:59 PM »
Hi Riaz

I am not sure about auto calibration. you May refer @Ila Chawla 's recent paper in AWR,1344.0.html  and also see the MOCOM-UA method from VIC website..

Hope this will help.

Note: Kindly post your question with relevant topics. If you are not find any existing topic relevant to your query you can start a new topic. You can use this thread for general queries and other information related to VIC,205.75.html 

Announcements / FREEWAT - Remote training
« on: February 12, 2018, 09:44:25 AM »
Dear all


FREEWAT ( is a free and open source, QGIS integrated platform for the simulation of groundwater flow dynamics and related processes (interaction between ground- and surface-water, solute transport, density-dependent flow, water management in agriculture, sensitivity analysis and model calibration).

The FREEWAT platform integrates simulation codes belonging to the USGS family (e.g., MODFLOW, MT3DMS, SEAWAT, UCODE), along with tools for data pre-processing and post-processing of model results.

The training activities will consist in a set of FREEWAT tutorials to be performed individually. It is planned to be run between March 5th and June 3rd, 2018. Practically, the team will ask you and support you in performing one tutorial every 15 days, for about 13 weeks and a total of 50 hours of estimated commitment. During the whole period they will support you by email or skype means.

Please, notice that the FREEWAT platform, along with User manuals, tutorials and data, can be freely downloaded through this webpage.

The full training schedule is provided here.

If you wish to take part to this remote training, please register through this link within March 4th, 2018, h. 1:00 PM.

At the end of the training period, they will provide a certificate if required.

Models / Re: [VIC] routing energy balance outputs with subdaily fluxes
« on: February 09, 2018, 02:56:02 PM »

p.s. Even though it's against what the documentation say, someone told me you can run energy balance mode with 24h time step (VIC 4.2.d)

Yes. You can run energy balance computation with daily time step in VIC earlier version. But it will take more computational time depending on your grids.

Though my response to your query is late.. can you share some more information? eg. global parameter, soil and other parameters. 

Programming / Re: Writing two dimensional netCDF file in python-Reg
« on: February 09, 2018, 12:08:45 PM »
Thank you so much Subash for spending your valuable time..:)

subset is working now... some problem in c library for netcdf in my windows. it is working fine in ubuntu. you are right problem with the variable name also.. I should give same name as dimension.

regarding my earlier case (writing the data from excel sheet), I need to write the values for corresponding grids. I have 1694 grids in 57*52 domain with 0.05 degree resolution.

So I did like this

Code: [Select]
wb = load_workbook('D:\\R_Workspace\\UB_Try.xlsx')
ws = wb['UB_details']

#To get the prec variable
ppt = []
for i in range(2,1696):

ppt_arr = asarray(ppt) # the size is 1694
# to load the data

temp = zeros(52 * 57, dtype=float32) # Temporary array with dimension size
temp[:ppt_arr.size] = ppt_arr  #put the corresponding values (1694 size) to temp and remaining write as no data
prec[:] = temp

Is this the way? any thing wrong in that?  If I print the variable (prec) it is showing like one dimensional array not in 2D
Code: [Select]
[25.838  9.957 42.521 ...  0.     0.     0.   ]

but your test case the variable looks correct as two dimensional array. we can see
Code: [Select]
[[0.000e+00 1.000e+00 2.000e+00 ... 4.900e+01 5.000e+01 5.100e+01]
 [5.200e+01 5.300e+01 5.400e+01 ... 1.010e+02 1.020e+02 1.030e+02]
 [1.040e+02 1.050e+02 1.060e+02 ... 1.530e+02 1.540e+02 1.550e+02]
 [2.808e+03 2.809e+03 2.810e+03 ... 2.857e+03 2.858e+03 2.859e+03]
 [2.860e+03 2.861e+03 2.862e+03 ... 2.909e+03 2.910e+03 2.911e+03]
 [2.912e+03 2.913e+03 2.914e+03 ... 2.961e+03 2.962e+03 2.963e+03]]

how do I write that in case I am writing from some files?

Thank you

Programming / Re: Writing two dimensional netCDF file in python-Reg
« on: February 08, 2018, 09:41:44 PM »
Hi Subash

Thank you for spending your time.

It is also not working. variable name is not a problem. I am missing proper syntax to write a nc file it seems.

Even I tried for sub-setting and rewrite a existing nc file. But facing the same issue

You may have a look for this

Code: [Select]
from netCDF4 import *
from numpy import *
import time

#Read and subset
nc_file = Dataset('D:\\R_Workspace\\','r')

latbound = [16,20]
longbound = [73,77]

lats = nc_file.variables['Latitude'][:]
lons = nc_file.variables['Longitude'][:]

lat_lb = argmin(abs(lats-latbound[0]))
lat_ub = argmin(abs(lats-latbound[1]))

lon_lb = argmin(abs(lons-longbound[0]))
lon_ub = argmin(abs(lons-longbound[1]))

sm_sub = nc_file.variables['soil_moisture_x'][lon_lb:lon_ub,lat_ub:lat_lb]
lat_sub = nc_file.variables['Latitude'][lat_ub:lat_lb]
lon_sub = nc_file.variables['Longitude'][lon_lb:lon_ub]

#write to new file
my_file = Dataset('D:\\R_Workspace\\subset\\','w', format = 'NETCDF4')

my_file.discription = 'Test file'
my_file.history = 'Created on: ' +time.ctime(time.time())

ldim = lat_lb-lat_ub # getting the no of element
lndim = lon_ub-lon_lb

lon = my_file.createDimension('lon',lndim)
lat = my_file.createDimension('lat',ldim)

latitude = my_file.createVariable('Latitude',float32,('lat',))
latitude.units = 'Degree_north'
longitude = my_file.createVariable('Longitude',float32,('lon',))
longitude.units = 'Degree_east'

sm = my_file.createVariable('SM',float32,('lon','lat'),fill_value = -9999.0)
sm.units = 'percent'

#Load values to the variables
latitude[:] = lat_sub
longitude[:] = lon_sub
sm[:] = sm_sub

something is wrong but I am not getting it. any suggestion pls.

Thank you

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