Questions tagged [precipitation]

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

Filter by
Sorted by
Tagged with
0
votes
1answer
33 views

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 ...
1
vote
2answers
32 views

Precipitation Interpolation Resolution Setup 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 ...
0
votes
0answers
41 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 ...
1
vote
2answers
43 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
2answers
216 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 ...
1
vote
1answer
66 views

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/...
0
votes
0answers
16 views

OpenlandMap precipitation dataset

OpenlandMap precipitation dataset has a date range between 2007 to 2019. It is an image with the most accurate dataset between precipitation datasets. Is this possible to filter it's date to a ...
0
votes
1answer
146 views

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 ...
0
votes
0answers
84 views

Getting precipitation daily sum data from GSMap in Google Earth Engine

There are two posts about this issue, but neither seems to work properly: Reduce image collection to get daily sum from hourly precipitation GSMaP 12:00h pm to 11:00h am Reducing image collection to ...
-1
votes
1answer
35 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 ...
0
votes
0answers
17 views

How should I write the TimeBand for making a chart of accumulated precipitation between dates with GSMaP

I am trying to generate in GEE a chart of the accumulated rainfall between dates (two months approximately) for a series of polygons that I have in a shape file. I am using the information from the &...
0
votes
1answer
55 views

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
1answer
49 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
1answer
79 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 ...
0
votes
0answers
31 views

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 ...
1
vote
0answers
57 views

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 ...
0
votes
1answer
326 views

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 ...
1
vote
1answer
132 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 ...
1
vote
1answer
300 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 ...
2
votes
0answers
55 views

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') ...
1
vote
1answer
101 views

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 ...
-1
votes
1answer
520 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 ...
0
votes
0answers
41 views

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 ...
0
votes
2answers
50 views

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 ...
3
votes
1answer
864 views

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 ...
1
vote
3answers
76 views

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 ...
1
vote
1answer
61 views

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 ...
0
votes
2answers
565 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 ...
1
vote
2answers
111 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 ...
0
votes
1answer
71 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 ...
2
votes
1answer
535 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 ...
1
vote
0answers
658 views

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 ...
0
votes
1answer
234 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 ...
1
vote
1answer
1k 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): ...
1
vote
1answer
49 views

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 ...
0
votes
1answer
173 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. ...
0
votes
0answers
277 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
votes
1answer
51 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
votes
0answers
58 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
vote
1answer
398 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 ...
0
votes
1answer
954 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
66 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)
2
votes
1answer
112 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 ...
6
votes
1answer
2k 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
771 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
vote
1answer
263 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 ...
1
vote
2answers
221 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
vote
0answers
72 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
vote
0answers
158 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?
2
votes
1answer
49 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 ...