Posts

Showing posts from May, 2020

Error in SWAT-Check

Image
SWAT check Program After running SWAT model successfully, the output of SWAT can be check by using new swat interface named as SWAT check window. SWAT check read the swat model output form your swat project to judge the model  problems. This program was developed to check the model problem before the calibration. This program can save your time to find the problems in your ruining model. As SWAT model is based on water balance equation and therefore you can see all the water balance component in SWAT check program. As evapotranspiration (ET) should be about or greater than 50% of total incoming rainfall and if your run model is depicting below this amount then you can guess that there is something problem in model that's why ET is less than 50%. This is simple example to guide you to check your run model. You can see in figure given below to see  water balance by model where ET is more than 50% of incoming rainfall.   There are various options of visual interpretation of model o

Download NCEP/NCAR reanalysis

Image
D ownload NCEP reanalysis climate variables   NCEP/NCAR-climate variables: convective precipitation rate, precipitation rate, air temp, Specific humidity, relative humidity, m ax temp, m in temp, downward longwave radiation flux, upward longwave radiation flux, u-wind, v-wind, sea level pressure etc. Here we can find 3 types of climate variable as Monthly basis climate predictor                4-times daily basis climate predictor Daily basis climate predictor Availability of data:   1948/01/01 to present Let find video to get data Follow the instruction as given in the video Thanks for watching…   Keep subscribe and Share..                  

Download 0.5 km MODIS based Global land cover climatology

Image
MODIS q MODIS is a key instrument aboard NASA's Terra (EOS AM) and Aqua (EOS PM) satellites.  q Terra's orbit around the Earth is timed so that it passes from north to south across the equator in the morning, while Aqua passes south to north over the equator in the afternoon.  q The Global Land Cover Facility (GLCF) provides access to imagery collected from the Terra MODIS sensor, in a product that is a composite of sixteen days worth of images.       For  downloading  MODIS Global land cover data, plz follow the link below. ..

Data Exploration using Q-GIS: for Beginners (Basic Level Q-GIS Training-Part-1)

Image
Data Exploration using Q-GIS: for Beginners (Basic Level Q-GIS Training-Part-1)

NetCDF into Raster using ArcGIS

Image
NetCDF into Raster using ArcGIS If you do not have expertise in coding- language, and want to visualize the NetCDF over the GIS platform The simple procedure is to convert the NetCDF into Raster using ArcGIS See how ?? Requirements 1: NetCDF file 2: Arc Map in your system S teps to convert netcdf into raster   1-Open ArcMap 2-Open Search command in Arc-map 3-Type  NetCDF 4- Open and Fill the information of NC file in Make NetCDF Raster Layer So see how to fill ??       In Make NetCDF Raster Layer, there are 7 options to fill as 1: input NC file: open the NC file from your folder 2: variable: It will be variable like temp/cprat 3: X dimension: Select Lon 4: y diminution: Select Lat 5: output raster layer: save the file, give any name you want. 6 : Band dimension: Left it 7 : Dimension value: Left it Finally click ok to proceed…. And your raster file will be open in Arc Map as given below.. Thanks for reading. Kindly share to explore the

Step by step SWAT-CUP for Calibration

Image
Step by step SWAT-CUP  for Calibration The detailed information can be find out from 1-       https://www.mssanz.org.au/MODSIM07/papers/24_s17/SWAT-CUP_s17_Abbaspour_.pdf , 2-     http://www.neprashtechnology.ca/Default.aspx ) 3-      https://swat.tamu.edu/ Requirements :   1-      ArcGIS/QGIS, Arc SWAT/ QSWAT , SWAT CUP and good processing speed of computer 2-      TxtInOut scenario of swat project run, observed data-sets like discharge (cms), sediment yield (t/ha) etc. Step by Step procedures 1-Interface of swat-cup 2-Setup the swat-cup project Simple Click on New for a new swat-cup project Click next for new swat-cup project Browse the swat project folder where the TxtInOut is situated  Select the TxtInOut and click on Open Click Next  Chose the Arc-SWAT version and the processor architecture Select Sufi2 as calibration method Click Finish to save the swat-cup project This will take some time to save a new swat-cup project 3: Data input and their formatting

Convert NetCDF into Excel or CSV using ArcGIS

Image
  Convert NetCDF into Excel or CSV using Why need to convert NC into CSV?   Generally, the hydrological model needs CSV or ASCII format data to run the model therefore; we need text format data from a climate model. Sometimes we need to do the time series analysis of climate data like for the rainfall and maximum/minimum temperature and for that, we require the CSV or ASCII format for applying the statistical approaches. Software need: ArcGIS  Data type: any NC file Output type: CSV or text Follow the Step given below as: Step1: Open the ArcGIS and search command Step 2: Type NetCDF in the search command Step3: select Make NetCDF Table View There are five options here (see in the figure) 1- Input NetCDF file: So input your file and here we will take NCEP reanalysis data of convective precipitation rate (cprat.sfc.gauss.1948.nc) 2-Variables: select variable as cprat 3-Output Table View: this is output option and it will appear in tabl