Indian Forum for Water Adroit

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Diwan

Pages: [1] 2 3 ... 5
1
Dear all

FYI

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;
http://www.iukwc.org/call-participants-iukwc-workshop-advancing-drought-monitoring-prediction-and-management-capabilities

2
Dear All

FYI

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:

ENVIRONMENTAL CHEMISTRY LETTERS
CURRENT SCIENCE
H2OPEN
ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD
SUSTAINABLE AGRICULTURE REVIEWS
RESOURCE EFFICIENT TECHNOLOGY
 
Conference details:

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

Dates:
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: https://technoscape.in/

3
Dear all

FYI

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

Panellists:

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 : https://register.gotowebinar.com/register/5807278859532612354

4
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
evapotranspiration

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

HTH

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 http://wateradroit.com/forum/index.php/topic,205.75.html 

5
Data / MOSDAC - Satellite based weather data and information services
« on: February 15, 2018, 09:09:57 AM »
Dear all

FYI

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.

https://www.mosdac.gov.in/

6
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 http://wateradroit.com/forum/index.php/topic,1344.0.html  and also see the MOCOM-UA method from VIC website.. http://www.hydro.washington.edu/Lettenmaier/Models/VIC/Documentation/MOCOM.shtml

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 http://wateradroit.com/forum/index.php/topic,205.75.html 

7
Announcements / FREEWAT - Remote training
« on: February 12, 2018, 09:44:25 AM »
Dear all

FYI

FREEWAT (www.freewat.eu) 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. http://www.freewat.eu/software-0

The full training schedule is provided here.

https://gallery.mailchimp.com/9e290defc14265fe8af4b64ee/images/5a727f1e-e594-4fbc-a2e6-641f06d93833.png

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

https://geoservice.ist.supsi.ch/limesurvey/index.php/874478?lang=en

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

8
Models / Re: [VIC] routing energy balance outputs with subdaily fluxes
« on: February 09, 2018, 02:56:02 PM »
Hello!

Quote
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. 

9
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.append(ws.cell(row=i,column=3).value)

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

10
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\\19971207.nc','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]
nc_file.close()

#write to new file
my_file = Dataset('D:\\R_Workspace\\subset\\19971207.nc','w', format = 'NETCDF4')

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

#Dimensions
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)

#Variables
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
my_file.close()

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

Thank you


11
Programming / Writing two dimensional netCDF file in python-Reg
« on: February 08, 2018, 12:45:42 AM »
Dear all

I tried to write a two dimensional nc file in python. I could able to generate the file but that spatial extent and resolution is not in proper. so it is not showing properly in ArcGIS.

Here is the code
Code: [Select]
from netCDF4 import *
from numpy import *
from openpyxl import *
import time

#Load the data sheet
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.append(ws.cell(row=i,column=3).value)

ppt_arr = asarray(ppt)

#Writing nc file
nc_file = Dataset('D:\\R_Workspace\\Test.nc','w',format='NETCDF4')

nc_file.description = 'Example dataset'
nc_file.history = 'Created on ' +time.ctime(time.time())

#Defining dimensions
lon = nc_file.createDimension('lon',57)
lat = nc_file.createDimension('lat',52)

#Creating variables
latitude = nc_file.createVariable('Latitude',float32,('lat',))
latitude.units = 'Degree_North'
longitude = nc_file.createVariable('Longitude',float32,('lon',))
longitude.units = 'Degree_East'

prec = nc_file.createVariable('prec',float32,('lon','lat'),fill_value = -9999.0)
prec.units = 'mm'

#Writing data to variables
lats = arange(16.875,19.425,0.05)
lat_reverse = lats[::-1]
lons = arange(73.325,76.175,0.05)
latitude[:] = lat_reverse
longitude[:] = lons
temp = zeros(52 * 57, dtype=float32)
temp[:ppt_arr.size] = ppt_arr
prec[:] = temp
nc_file.close() 

created nc file is attached
any suggestions pls.. Thank you..:)

12
Models / Re: VIC hydrological model- sample data
« on: February 01, 2018, 06:21:55 PM »
Hi
Explore the option carefully in the global parameter file. You need to specify atleast minimum required option to run the model according to your input parameter (Forcing, Soil parameter, Vegetation library and vegetation parameter) and mode of computation (Energy/water balance)

13
Announcements / Indo-U.S. Fellowship for Women in STEMM
« on: February 01, 2018, 09:28:49 AM »
Dear All

FYI

Women Overseas Student Internship:

Eligibility: Indian women applicant currently pursuing Ph.D. degree in Basic Sciences, Engineering or Technology including Agricultural and Medical Sciences (M.D/M.S.) on a full-time basis at any recognized academic institution/R&D institute/university in India. Unemployed Women applicants who have completed Ph.D./M.D/M.S are also eligible.
Age: 21 to 35 years (as on 28.02.2018)
Duration of the Internship: For a period of 3-6 months
Nature of Support will include :
Monthly stipend of $2,500
Air Fare up to $ 2,500
Health Insurance of up to $500
Contingency up to $750

Women Overseas Fellowship:

Eligibility: Indian women applicant having Ph.D. degree in Basic Sciences, Engineering or Technology including Agricultural and Medical Sciences (M.D./ M.S.) and holding a regular position at any recognized academic institution/ R&D institute/ university/ college in India.
Age: 27 to 50 years ( as on 28.02.2018)
Duration of the Fellowship: For a period of 3-6 months
Nature of Support will include :
Monthly stipend of $3,000
Air Fare up to $ 2,500
Health Insurance of up to $1000
Contingency up to $750
Conference Allowances of up to $1,000

Application last date: 28th February 2018

For more details pls follow this link http://iusstf.org/story/53-108-Indo-U-S--Fellowship-for-Women-in-STEMM.html



14
Models / Re: VIC hydrological model- sample data
« on: January 30, 2018, 12:27:55 AM »
Hi Riaz

Pls provide sufficient information while posting your query. You pls go through the VIC website for compiling the source code. You can also follow this thread http://wateradroit.com/forum/index.php/topic,205.0.html

Hope this will help you.

15
Abstract: To promote the advancement of novel observation techniques that may lead to new sources of
information to help better understand the hydrological cycle, the International Association of
Hydrological Sciences (IAHS) established the Measurements and Observations in the XXI century
(MOXXI) Working Group in July 2013. The group comprises a growing community of techenthusiastic
hydrologists that design and develop their own sensing systems, adopt a multidisciplinary
perspective in tackling complex observations, often use low-cost equipment intended
for other applications to build innovative sensors, or perform opportunistic measurements. This
paper states the objectives of the group and reviews major advancements carried out by
MOXXI members toward the advancement of hydrological sciences. Challenges and
opportunities are outlined to provide strategic guidance for advancement of measurement, and
thus discovery.

Link to this article: https://doi.org/10.1080/02626667.2017.1420191

Pages: [1] 2 3 ... 5