Questions tagged [precipitation]
Precipitation is a common climatic variable used in many GIS modeling processes
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0answers
10 views
Calculate monthly sum of rainfall raster with python or shell? Gdal? [on hold]
I have rainfall data in raster file (.tif) every 3h for several years in a folder. Each file has the date into the name with the format: YYYYMMDD.HH.tiff
I want to calculate daily and monthly sum of ...
1
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1answer
35 views
How can I calculate the maximum sky viewing angle for every point in a DEM not covered by objects? [on hold]
I am looking for areas in a city that are suited for setting up precipitation measuring stations. One constraint is, that the station has to be distant from each object at least two times the object's ...
0
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0answers
21 views
Converting TRMM NetCDF-4 to GeoTIFF using R? [on hold]
I have a lot of TRMM 3B42 files (daily product, NetCDF-4 format) and I need to convert all these files to GeoTIFF in batch.
How can I perform this procedure?
On this link there is a TRMM NC4 file.
0
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1answer
25 views
Moisture Stress Index - how important is seasonal influence in a deciduous forest?
I want to calculate moisture stress index for a deciduous forest using the formula from the article 'Detecting vegetation leaf water content using reflectance
in the optical domain' (Ceccato et al. ...
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0answers
34 views
Summing multiple years of rain data using Google Earth Engine?
I am trying to determine the what areas tend to get rain in a specific interval of time over multiple years. What I am doing is taking the filter date (in this case June 15th through July 15th) and ...
0
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1answer
24 views
Summation of multiple map layers?
What I am trying to do is to take a specific range of time (summer) over multiple years and then sum the total amount of precipitation onto a final layer.
This is the code I am working with
var ...
2
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0answers
22 views
Projecting a PRISM raster from NAD1983 to Albers Equal Area PCS in ArcMap: Why does my raster change position and cell size?
I want to perform zonal statistics on PRISM precipitation rasters using watershed shapefiles as my input zone features. I'm operating under the precept that I should project all my data into the same ...
1
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1answer
107 views
Reducing hourly rainfall data to monthly data for particular period of time and making a timeseries chart
I am working with GSMaP image collection (hourly rainfall data) in Google Earth Engine. I would like to make a script which is calculating and making a chart of sum rainfall in particular location ...
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1answer
83 views
Multi-Trend in Google Earth Engine?
I've wrote below code for visualize precipitation changes over a year with ui.chart command in two different provinces.
var persiann = ee.ImageCollection('NOAA/PERSIANN-CDR')
.filterDate('2017-01-01',...
-1
votes
1answer
46 views
How can I reduce the size of shapefile (.prj, .shx, .shp) up to 8 MB? [closed]
It is sub basin photo which I want to upload to CHRS so that I can to download satellite precipitation data (https://i.stack.imgur.com/EQt3v.jpg)
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0answers
30 views
Classification using arcpy 2.7
I'm trying to create a tool that will consume National Weather Service 1 hour precipitation radar information and then classify groundcover based on amounts per area (in mm), then output the results ...
2
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1answer
76 views
Daily Rainfall data processing?
i have a .shp file of gridded daily rainfall data for an entire state.
How do i calculate the sum of all 365 days (each day is a field, n recorded for 450 stations) and generate a raster?
I am ...
4
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1answer
695 views
Reducing image collection to get daily sum from hourly precipitation and extraction of polygon data?
I'm using GSMaP image collection in Google Earth Engine, which has hourly precipitation data from 2000 to present. I have a script which helps getting mean pcp data (as a table) from polygon from each ...
8
votes
3answers
407 views
Locate wet patches using DEM
I'm searching for a way to determine the location of wet patches, after rainfall, in a DEM. By this, I mean puddles.
We are investigating the best locations to locate paths for recreational use. ...
1
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1answer
197 views
Average precipitation raster
I want to plot mean annual precipitation data for a region. I downloaded the precipitation dataset for 1900-2014 from University of Delaware site in netCDF format. Whenever I try to open the dataset ...
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2answers
94 views
Interpreting GLDAS 2.1 precipitation data
I am trying to use the GLDAS 2.1 3-hourly precipitation datasets available at:
The dataset is documented here:
https://hydro1.gesdisc.eosdis.nasa.gov/data/GLDAS/README_GLDAS2.pdf
The data is ...
1
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0answers
54 views
Defining projection for FEWS rainfall data in ArcMap? [closed]
This problem has been tackled here previously (see Manually adding spatial reference information for FEWS rainfall data in ArcMap?) but i couldnt get a solution to my problem from the thread.
I am ...
1
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0answers
90 views
Which format to display the gsmap downloaded data in QGIS?
Where can I download gsmap data especially for precipitation / rainfall and which format can be supported by QGIS software?
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1answer
268 views
Acquiring and understanding data from world clim? [closed]
I am a novice and trying to get monthly precipitation data of India in raster format month wise.
The closest I got was from worldclim.org that too annual data for a block containing the Indian ...
3
votes
1answer
46 views
Storm Total Precip Map
I'm using ArcMap 10.5.
I have two individual days of precip data rasters from NOAA/NWS.
I want to combine the two days with the cumulative total storm precip displayed in a new raster.
Many of the ...
1
vote
1answer
86 views
Batch raster operations to get Maximum Precipitation in a Catchment
I have information of maximum precipitation per grid cell for a certain area over 55 years, each year is a different matrix with the corresponding precipitation values. I know that I need to do the ...
1
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1answer
729 views
Calculating and displaying mean annual precipitation from CRU data
I'm trying to display mean annual precipitation (MAP) data from the CRU dataset (http://data.ceda.ac.uk/badc/cru/data/cru_ts/cru_ts_4.01/data/pre/) across a specific region.
The data are monthly ...
0
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3answers
98 views
Daily temperature data portal globally
Is there any climatic portal for downloading historical climatic data ( Rainfall & Temperature) on a daily basis or at least on a decadal basis?
PRISM gives only for US regions.
1
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0answers
125 views
How to handle multiple rasters (precipitation data) in QGIS?
Currently I am working at a hydrological model for Rwanda which needs monthly precipitation data averaged over the area of subcatchments.
The precipitation data are 144 TIF's from CHIRPS for timespan ...
0
votes
1answer
708 views
Average and Annual rainfall in R? [closed]
I have rainfall data for more than 50 years in a column. I need to get total rainfall and average rainfall for each year.
How can I do it in R?
0
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1answer
70 views
Solving computing time problem when grid size element increases in flood model?
I want to create high resolution and high accuracy "area of inundation" map using FLO-2D Model. I have high resolution Digital Elevation Model (DEM) and I must show small topographic details on my ...
2
votes
0answers
349 views
How to download GPM rainfall data automatically?
How to download GPM rainfall data automatically?
I tried to use DownloadGPM.R Function, but I think I had problem with Axel download accelerator. I guess I need to declare Axel as environment ...
3
votes
1answer
662 views
Interpolating multiple years of daily precipitation data to generate daily time series? [duplicate]
I am trying to use ArcMap ver. 10.2 to create several models using ModelBuilder. The model will be created to:
interpolate 7 years of point measured precipitation data (long integer format at a daily ...
1
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0answers
101 views
ArcGis layer query: Average annual precipitation for area in U.S [closed]
I need to get average precipitation for certain land parcels. I've found several layers which could offer this information but queries do not return results or indicate error. Below is example of my ...
2
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1answer
54 views
Any standards for urban rainwater drainage network?
I am starting to work on a project related to urban drainage networks. Are there any standards out there to represent this kind of network? Relevant attributes would be things like pipe section, pipe ...
0
votes
1answer
51 views
Failing to Extract by Mask with Small Groundwater Basins?
I am using ArcGIS for Desktop.
I am working with 4km resolution precipitation rasters from the PRISM website because I am trying to calculate the total annual precipitation for each groundwater basin ...
1
vote
1answer
701 views
How to automate the Interpolation of daily(Total-365 days) precipitation data?
I have daily rainfall data in comma-delimited text file for some location as follows
Lat, Long, Precipitaion(mm)
26.0, 78.0, 23
26.50, 78.30, 200
26.70, 78.45, 405
...
I have ...
1
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0answers
70 views
Error in merging two raster files (precipitation) in QGIS
The newly computed geotiff shows the extent of both raster layers, but only the data of one. If I use identify features tool it gives me only the values of the visible part not of the other part. I ...
1
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0answers
352 views
Simulate water runoff to get water height over each pixel of DEM
Here is my problem that I am trying to deal with.
I have given a height map of around 512X512 resolution(It is Geo-referenced and I have the meta-data for this). And I have given that this area ...
5
votes
1answer
8k views
Manually adding spatial reference information for FEWS rainfall data in ArcMap?
I am trying to match rainfall data from USGS/FEWS to coordinate locations of survey households in Uganda, so I will need to be able to project the rainfall data. So far, I downloaded the dekadal RFE 2....
1
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0answers
168 views
Open-source tools for run-off depth calculation
I am working on modeling surface run-off (in ArcGIS 10.2) due to a rain event (e.g., 5 year rain for a duration of 30 mins.) over an approx. area of 30 km2 for which I have a DEM and necessary soil as ...
1
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0answers
529 views
Depth of run-off water [closed]
I am working on modeling surface run-off due to a rain event (e.g., 5 year rain for a duration of 30 mins.) over an approx. area of 30 km2 for which I have a DEM and necessary soil as well as land-...
2
votes
1answer
739 views
Method of inputing time series data in ArcGIS
I have weather stations with its geographical location ( lat,long, ht) along with daily temperature and rainfall data in time series format. I would like to use this meteorological data to interpolate ...
-3
votes
1answer
146 views
Combining many individual precipitation shapefiles to show by year in ArcMap? [closed]
I have 10 years of each year precipitation in shapefiles and would like to combine them into one to show years in ArcMap layer.
Do I need to use the append or union ?
1
vote
1answer
984 views
creating precipitation grid
I am trying to create a precipitation grid for my meteorologic model.
The problem is that, I do not know what are the things I should have for me to create the grid.
Can anyone tell me what are the ...
1
vote
1answer
887 views
Using rainfall data (raster) as an input to determine stream lines in Arc Hydro?
I was wondering if it is possible to use rainfall data (raster) as an input to Arc Hydro for determining stream lines?
I am learning Arc Hydo and have gone through a couple of tutorials. As far as I ...
1
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2answers
7k views
Mapping Precipitation Data
I have downloaded daily precipitation data from Global Weather data website and want to create an annual precipitation map like this:
(source: worldatlas.com)
The downloaded data is in TXT and CSV ...
4
votes
2answers
809 views
Reading binary rainfall data (*.trm) in ArcGIS for Desktop?
I have some *.trm binary data that is merged Tropical Rainfall Measuring Mission (TRMM) rainfall data.
I have to read it through ArcGIS for Desktop to extract rainfall data from this.
1
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0answers
448 views
Determining average rainfall for cumulative watershed, where only sub-watersheds defined? [closed]
I have a polygon layer with sub-catchments (sub-watersheds) and a grid of rainfall. I have used the Zonal Stats as a table to calculate the average rainfall for each sub-catchment, but I now need to ...
1
vote
1answer
614 views
How to use ArcMap for HydroPower Potential
I am trying to determine the sites for small hydropower. I have a elevation dem, rainfall data, Curve number data (from soil and landuse shapefiles). I have already used the DEM to fill sinks, find ...
2
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1answer
2k views
Python package for processing GRIB data in windows
I would like to know what python packages can be used to process GRIB (Gridded Binary) data on a Windows system. I know there is something called pygrib, but to use that I have to use cygwin windows ...
1
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2answers
2k views
Calculating watershed runoff with landuse and rainfall data?
What is the method for computing rasters of total rainfall of a given month, flow accumulation, and land use (runoff coefficient) or soil K factor? I am using ArcMap 10.
6
votes
2answers
2k views
Kriging method to use for rainfall?
I am working on an rainfall analysis and I have to interpolate some datas with kriging method.
Is co-kriging suitable for the rainfall analysis?
6
votes
5answers
7k views
Calculating Runoff / Streams using DEM in ArcGIS
I am just curious about the workflow that many of you use for runoff/stream analysis using a DEM and create a "water network" from the results in ArcGIS 10.1? I know the average rainfall for different ...
2
votes
0answers
2k views
How to convert Rainfall Isohyet map into Raster to determine precipitation (mm) at any point? [closed]
Specifically, I have a rainfall map (Isohyets) measured in mm (precipitation)... I wanted to know a particular value (precipitation) at any point between these lines...
How can I do this? Do I have ...
