Questions tagged [precipitation]

Precipitation is a common climatic variable used in many GIS modeling processes

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Zonal stat of imd rainfall .nc file for polygons within shapefile using PyQGIS

How to extract imd rainfall data for polygons(district level) within a shapefile?. Used PyQGIS , solution (given below) wherein output for each day of all polygons is exported as .csv file. Had to ...
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1 answer
33 views

Units of ERA5 Daily Aggregates Google Earth Engine

In Google Earth Engine, ERA5 Daily Aggregates - Latest Climate Reanalysis Produced by ECMWF / Copernicus Climate Change Service Bands show the maximum total_precipitation value of 0.02m which is 20mm. ...
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78 views

Daily IMERG timeseries in Google Earth Engine

I am trying to make an area-averaged time series of daily precipitation (IMERG). I'd use NASA Giovanni, but I need to be able to use my own shapefiles to average the areas. Given the size of the area ...
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How to aggregate total amount of precipitation from all cells within three seperate catchments?

Using ArcGIS Pro, I ran 4 different IDW interpolations (rasters) of rainfall measurements across 26 measurement stations (point features). I'm trying to now aggregate the total amount of precipitation ...
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Identifying the certain values and counting the event of maximum precipitation with it's date and pointID with Python

I have a CSV file of my study area and I want to choose best area in this large study area to run my modelling for hydrogeology which is based on maximum event precipitation. I have the code and I can ...
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How to Map.addLayer() rainfall featureCollection over globe using Google Earth Engine?

I am trying to print the precipitation imageCollection allover the whole world but I allways get only a part of the image. as you see in the image, the north of europe is empty and event when I use ...
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GPM monthly data is inconsistent with the half hourly data aggregated to monthly

I wrote a code in GEE to first aggregate half-hourly GPM data into cumulative daily precipitation and then aggregate daily data into cumulative monthly data. In the next step, to ensure that my code ...
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1 answer
79 views

Precipitation data error in Google Earth Engine code

I want to get the precipitation totals for certain months, but when I run it on the WorldClim Climatology V1 dataset, I get the following error message. how can i fix this? Error message: ...
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Extract precipitation values for polygons over PRISM dataset using Google Earth Engine

I am trying to extract monthly PRISM ppt values over 58 polygons for 1 year. I am able to extract the values for one month (image), but when I try to map over the entire image collection, the result ...
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1 answer
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Taking average of long term daily rainfall values if it contains lots of zero values

I wanted to interpolate my daily rainfall data into ArcGIS for visual representation. I have almost 10 years of daily rainfall data which contains lots of zeros. When I take the average daily for ...
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259 views

Getting the monthly aggregate precipitation values from ERA5-Land Monthly Averaged - ECMWF Climate Reanalysis

I have a problem with the ERA 5 - Dataset. What I need are the monthly aggregated values for the precipitation in my region. In the "ERA5 Monthly Aggregates - Latest Climate Reanalysis Produced ...
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Calculating mean of an area over a time series as an ImageCollection

I want to calcaulte areal mean rainfall over my AOI for every month in a time series. I have managed to do this outputting as a feature collection but I want to output as an image collection. How do I ...
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ERA5-Land Hourly Precipitation Chart and Map

I am little bit confused how to handle the "ERA5-Land Hourly"-Dataset in GEE. I want the total precipitation of every month from 2018 till end of 2021 for my area. For the chart I took the ...
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NetCDF file is rotated QGIS

I downloded IMERG precipitation data as NetCDF files but when I use QGIS to open them, the raster files are rotated. Does anyone know how to solve this?
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Reprojecting of raster using QGIS

The raster I am trying to reproject is found here https://psl.noaa.gov/data/gridded/data.gpcp.html, and it's the first one "Monthly Mean" (so you might try to do it yourselves). Problem is ...
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Accessing historical precipitation data outside of GEE

I'm looking for historical and also present climate data for some polygons I have. I would like to be able to access rainfall data for these points. I cannot use GEE and was struggling to find a good ...
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GPM annual precipitation using Google earth engine

I'm trying to calculate GPM v6 annual precipitation using the google earth engine. but show this error: Line 11: ee.ImageCollection(...).select(...).filterDate(...).filterBounds(...).clip is not a ...
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Daily Rainfall data extraction from CHIRPS database for polygons using Google Earth Engine

I don't use GEE a lot but I have to use it to extract daily rainfall data from the CHIRPS database. It should be simple but I am stuck. The outcome should be one CSV file with three columns: polygon ...
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GEE Converting Units of the FLDAS Precipitation data (Rainf_f_tavg) from kg m-2 s-1 to mm/month

Using Google Earth Engine to extract FLDAS dataset for specific coordinates for the time period 1990-2020. I use Rainf_f_tavg Precipitation bands with the default format is kg m-2 s-1. Then i multiply ...
2 votes
2 answers
136 views

Resolution Setup for Precipitation Interpolation in QGIS

I am trying to interpolate rainfall data using the GDAL's Grid (Inverse Distance to a power) in QGIS 3.16. Is there a way to specify the resolution of the result/change the size of pixel? The ...
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208 views

Downloading JAXA/GPM_L3/GSMaP/v6/reanalysis" hourly product in Google Earth Engine

I want to download "JAXA/GPM_L3/GSMaP/v6/reanalysis" hourly product for a relatively large area approximately 300000 square km and for a long period of time, say 15 years, since this product ...
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156 views

Dictionary.get: Dictionary does not contain key: precipitation

I am trying to get 3 hourly rainfall data for my region using TRMM/3B42. There seems to be an error but I am unable to find it. var rain = ee.ImageCollection("TRMM/3B42").select("...
2 votes
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865 views

Iterating over dates to extract precipitation in Google Earth Engine

I'm looking to sum precipitation for a period of 10-days prior to a specified date. This is just an example - in fact, I have around 60 different dates and I don't want to select each the date ...
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1 vote
1 answer
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Export raster from Google Earth Engine

I wish to download the raster image of precipitation data. Is that possible? I think I'm doing something wrong when I export it. Here is my code: //Rain var lluvia = ee.ImageCollection('JAXA/GPM_L3/...
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Exporting rain data to CSV file from Google Earth Engine

I would like to get the CSV file of rain daily data from GSMAP for a specified polygon (mean in geometry). I succeed in getting into it on a chart, but now I want to download the data and I'm having ...
-1 votes
1 answer
113 views

Daily rainfall chart in a polygon between dates in GEE

I would like to make a chart of daily rainfall in a polygon of a shape file collection. var inidate = ee.Date.fromYMD(2020,5,1) var enddate = ee.Date.fromYMD(2020,11,10) // Difference between start ...
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Cumulative Rainfall with GPM between dates

I am trying to generate a cumulative rainfall map between two dates using the GSMaP satellite. I don't know how to do the simple sum of the information in that band "hourlyPrecipRate". ...
1 vote
1 answer
80 views

Selecting only CFSR images in Google Earth Engine with precipitation data

I am trying to create cumulative monthly composites of precipitation from CFSR data in Google Earth Engine (i.e. each image would be mm/month for each month) However, I realised that images ending ...
2 votes
1 answer
288 views

How to find out which areas are affected by flooding due to heavy rain?

I'm working on a little project to visualize affected streets of flooding due to heavy rain. I already got a DEM for my study area and filled the depressions with r.fill.dir. Since I never worked on ...
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Is it okay to do analysis on coarse rainfall data, since the area calculations can be highly misleading

I need to find the area of different classes within the rainfall data, which will be pixel-based, and since coarser data may under and over cover the study area (image below), the area calculations ...
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Bilinear resampling yields inaccurate/small values (Earth Engine)

I am trying to upscale / resample some GSMaP observations from 0.1 x 0.1 degrees to 30m. I want the resolution to match Landsat 8 so that I can perform some modeling. But in Google Earth Engine when ...
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Standardized Precipitation Index with gamma function

Inspired from Climate Engine platform, I want to calculate Standardize Precipitation Index based on this paper, where each rainfall datasets are fitted to the gamma function to define the relationship ...
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297 views

Calculate daily precipitation data from hourly GSMaP over several years

I am still new to the Google Earth Engine and try to calculate the daily precipitation based on the hourly GSMaP data over a longer period of time. I know, that there are already a couple of questions ...
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1 vote
1 answer
700 views

Extract time-series rainfall from multiple point with date information

I would like to have a CSV file which contain a time-series of 30 minutes rainfall from last 10-days before Landslide occurs from certain (landslide) location. I used NASA GPM IMERG data for the ...
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2 votes
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Understanding NOAA/GFS0P25 dataset of Google Earth Engine scale change

I have noticed that there are a big differences between the forecasting values of the years 2018-2019 against 2020 for 'total_precipitation_surface'. var dataset = ee.ImageCollection('NOAA/GFS0P25') ...
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Reduce image collection to get daily sum from hourly precipitation GSMaP 12:00h pm to 11:00h am

I am trying to adapt a script made available by colleagues from the GEE of the GSMaP image collection. The script obtains data (as a table) of the points of each image available in a given period and ...
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1 answer
761 views

Download GLDAS precipitation monthly 1 km resolution data by Earth-engine

Does anyone know how can I get GLDAS precipitation monthly 1 km resolution data by Earth-engine? Or maybe Earth-engine just process annual precipitation data by 0.25 degrees GLDAS product? Where is an ...
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High Resolution Monthly or Annual Precipitation data for four corner states or the Navajo Nation

I was wondering if anyone on here might know where I can find 30 meter resolution Average Annual or Average Monthly Precipitation data, that would cover the 4 corners area (UT, AZ, NM, CO) or ...
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What is the time interval for daily GPM IMERG product? 0:00 to 23:59 local time? UTC?

I'm processing a bunch of GPM IMERG Daily products and comparing to historical station data. These old met stations report daily precip from 9am to 9am of the following day. So I'm wandering what is ...
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3 votes
1 answer
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Google Earth Engine: precipitation data, summing monthly data is not matching annual sum

In essence, I used GRIDMET to pull both monthly and annual precip over the same area, same time, and same database, but summing each month for the same water year is not matching: NEW NOTE: As ...
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3 answers
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Rainfall interpolation using ArcMap

I have a layer that describe rainfall for 10 years. Now I want to interpolate the area in ArcGIS Desktop (ArcMap) 10.7. As you know I should define some point on my area to extract the rainfall from ...
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Using IDW tool in ArcGIS Desktop

In ArcGIS Desktop 10.7 we have IDW tool, but when you want to work with it you should need two layers such as : Some points and a closed polyline (Boundary) as following: then using IDW: but I have ...
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998 views

Standardized Precipitation Index (SPI) equation using ArcGIS Desktop

I usually calculate monthly or 3-monthly Standardized Precipitation Index (SPI) using spreadsheet, based on daily rainfall from weather station. Attached is the spreadsheet example link. And now I ...
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173 views

Clustering Raster Monthly Precipitation Pattern

I am looking for a way to automatically cluster the monthly rainfall data that I have like the Koppen Classification Map. I have 12 raster files of precipitation (months of Jan-Dec) of a country and I ...
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1 answer
90 views

TRMM 3B42RT product has no Coordinate Reference System?

When I download TRMM precipitation product 3B42RT.2016010100.7.7day and when opening it in QGIS the raster has no CRS and is seen in another place with a smaller resolution, I already tried ...
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1 answer
828 views

QGIS: Creating average of a precipitation multiple raster set?

I have a set of 12 precipitation raster layers downloaded from WorldClim, each one representing monthly precipitation data on a global scale. I've clipped all 12 layers with the area of interest. How ...
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Map gridded rainfall data to lat-longs and extract daily rainfall data? [closed]

My objective is to create a dataset, wherein for certain locations (lat-longs) I need to report daily rainfall from 1950 to 2017. Rainfall data source: Indian Meteorological Department (IMD) daily ...
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2 answers
2k views

WGS84 projection is invalid for aggregations

I am trying to extract the pixel value from the last image of an image collection. The problem is that when I do so, I get an error stating the following: This is my code for extracting the pixel ...
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1 answer
3k views

Google Earth Engine band did not match any bands errord

According to the dataset, there should be a band named: total_precipitation_surface. However, when I try to get data from this band I get: > Collection.first: Error in map(ID=2019061000F000): ...
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How can I calculate the maximum sky viewing angle for every point in a DEM not covered by objects? [closed]

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 ...
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