Questions tagged [climate]

For questions related to climate data or analysis, such as precipitation or temperature.

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Projection of CMIP data

How to get the spatial projection from NetCDF file in Python? I am working with CMIP6 data.
Jay's user avatar
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0 answers
42 views

Hourly wind speed data extraction from GEE using ERA5_LAND HOURLY image collection

I am trying to extract hourly wind speed data using 'u_component_of_wind_10m' and 'v_component_of_wind_10m' from ERA5_LAND HOURLY image collection for September 2017 for Dominica. The .csv file shows ...
Swagatalaxmi Das's user avatar
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1 answer
19 views

Unable to extract temperature values based on lat, lon from STAC CMIP6 data

I am using Microsoft Planetary Computer in Google Colab to extract Tasmax data from a CMIP6 ACCESS-CM2 model. I have the coordinates of multiple cities across the world and I am trying to get the ...
Anjishnu's user avatar
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0 answers
30 views

Finding latitude and longitude limits for a sub-region for CDS Copernicus Climate Data

In order to extract climate data from Copernicus, there's a Sub-region extraction section that allows one to extract data from a region within specific coordinate limits. I am trying to use the Sub-...
Jadon Wong's user avatar
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0 answers
28 views

In what units do the rasters need to be to use dismo::biovars?

I want to calculate bioclimatic variables from CHELSA monthly data using the biovars function from the dismo package but the help page doesn't mention in what units the precipitation and temperature ...
c roc's user avatar
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1 answer
22 views

Difficulty reading a legend

I have downloaded ACCESS-CM2 global climate model for precipitation prediction from 2021 to 2040. I have opened it in ArcGIS Pro 3.1 but found difficulties understanding the legend. it says Red: band ...
Mohamad Ebrahim's user avatar
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0 answers
34 views

Assign single SPEI value for each city

I want to have a single value of SPEI to every city of my map. As the SPEI data is gridded at 0.5 degree resolution, some cities o not have a point falling into its boundaries. My approach was to &...
Oalvinegro's user avatar
0 votes
1 answer
53 views

CHIRPS GEF Download with R

I need to download CHIRPS-GEF (rainfall forecast) raster data in R. I have tried with url <- "https://data.chc.ucsb.edu/products/CHIRPS-GEFS_precip_v12/daily_16day/2023/10/17/*.tif" ...
gianca's user avatar
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1 answer
86 views

Extract climate data

I need Qgis to extract climate data informations which are layered into the maps. Moreoever, I got exact geospatial plot-information for all of the plots. So lets say I got in QGIS a map with 2500 ...
JamesduBond's user avatar
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0 answers
173 views

Download and Data Errors with 5 of WorldCLIM’s CMIP6 Future Climate Data models

I'm experiencing some data issues specifically for the following WorldCLIM’s CMIP6 Future Climate Data models, available at https://www.worldclim.org/data/cmip6/cmip6_clim30s.html Data details: ...
misheru's user avatar
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Missing Pixel or Grid Value in the output while Calculating Standard Precipitation Index (SPI) using climate_indices library in Python

I am using NetCDF Gridded dataset of IMD Rainfall (NetCDF can be downloaded from here), for calculating the Standard Precipitation Index (SPI), using climate_indices library of Python I have changed ...
Abhilash Singh Chauhan's user avatar
1 vote
1 answer
174 views

How to extract daily values for 3 ERA5 climate parameters in GEE?

I'm new to GEE, and I've been trying to extract daily values from 3 climate parameters (minimum_2m_air_temperature, maximum_2m_air_temperature, and total_precipitation) from the ERA5 Daily Aggregates ...
mereinne's user avatar
1 vote
1 answer
105 views

Google Earth Engine ui.Chart.getDataTable() returns empty list

I am trying to grab the underlying data from a chart in GEE. It looks like there is a built in method for this: ui.Chart.getDataTable(), however it appears to not work. I've tried on multiple charts. ...
yeet_man's user avatar
1 vote
0 answers
67 views

How to create weighted lines from all point attributes to one point in QGIS

The idea is that I want to show the relative financial contribution from various banks to an industrial project. So, for example, I have the coordinates of bank headquarters all around southeast Asia (...
bluecarbon's user avatar
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0 answers
25 views

looping on fixed-width format file and changing them to NetCDF format

I have fixed-width format file of temperature data provided by University of Delaware. For more information on the files, including links to download and the function to read them see: Format of ...
crawling_ec's user avatar
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1 answer
162 views

Format of Temperature data from University of Delaware

I am downloading Temperature data from University of Delaware (http://climate.geog.udel.edu/~climate/html_pages/download.html). In it data which I am downloading is under the following head: "...
crawling_ec's user avatar
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1 answer
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Estimated Min Max values of ERA5 data

I am working with u and v component of wind on earth engine (ERA5) dataset hourly aggregates as well as directly fetching data from ERA5. 1) What I don't understand is why are u and v component values ...
pwnkit's user avatar
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1 vote
1 answer
77 views

Pixel-wise multivariable regression to estimate solar irradiance from Worldclim data

I want to do a pixel-wise multivariable regression to predict missing "srad13" and "srad14" data where "srad" is the dependent variable using the independent variable ...
Jaey's user avatar
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1 answer
23 views

Date in CRU data is starting from 380 instead of 1, since unit is days since 1900-1-1

I ran the following line of command. Below result show that: " time Size:1380 *** is unlimited *** long_name: time units: days since 1900-1-1 calendar: gregorian daily_rain <- "...
crawling_ec's user avatar
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0 answers
33 views

Date is missing in CRU data

I used the following code to extract "Climate research Unit" climate data. However extracted data showing "Date : NaN, NaN (min, max)". pre <- brick("cru_ts4.06.1901....
crawling_ec's user avatar
1 vote
1 answer
61 views

Displaying water movement paths over grid in QGIS

I have an external .csv file with "From" cell, "To" cell, X, Y coordinates for the "From" cell, X Y coordinates for "To" cell and flow rate for water going from ...
user1889930's user avatar
1 vote
1 answer
120 views

Calculating spring precipitation totals from monthly PRISM time series using Google Earth Engine

I'm working with monthly precipitation data from PRISM Climate Group for the time period Oct. 1991 to Sept. 2021. The monthly images are currently in an imageCollection and I'm trying to calculate the ...
JL435's user avatar
  • 13
3 votes
1 answer
102 views

qgis2web changes map projection

I have created a series of global maps containing climate change data through geologic time. I would like to display the data in interactive maps that contain drop downs with background information ...
Jake Slawson's user avatar
0 votes
1 answer
536 views

Calculating yearly air temperature mean for selected region ERA5

Using ERA5 data, I am trying to extract the average annual temperature for a region. I am interested in a single value for each year. This is the code I tried to use: //Define area var area = ee....
Nicolas's user avatar
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0 votes
1 answer
48 views

How to use symbology to snowfall accumulation GeoTIFF

I haven't worked with raster data in a long time. I just downloaded the annual snowfall via GeoTIFF and import to ArcGIS Pro. Of course, it appeared in black and white. I am having trouble formatting ...
Trey's user avatar
  • 171
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0 answers
251 views

NetCDF to GeoTIFF

I downloaded a set of NetCDF files of CMIP6 climate projections. Here are the specifications of my NetCDF file: dimensions(sizes): time(12), j(292), i(362), bnds(2), vertices(4) variables(dimensions): ...
sandroc's user avatar
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0 answers
133 views

How can I overlay Köppen climate classifications (specifically Af) on the default OpenLayers OSM map?

I managed to plot the ASCII.txt Lat,Lon coordinates but they are quite inaccurate (30 arc min). There is a higher resolution (5 arc min) R raster file, available from : http://koeppen-geiger.vu-wien....
witchrainforest's user avatar
2 votes
1 answer
511 views

"Geometry has too many edges" This is the which keeps on coming on GEE

I am trying to extract the data for the particular country using the shapefile for the province to get the daily precipitation data. But whenever I run the following code error displays: ...
Himani Pasricha's user avatar
-1 votes
2 answers
345 views

Calculate seasonal precipitation and temperature from CRU TS 4.05 in ArcGIS Pro

The Goal: To calculate the average spring (Mar-Apr-May) and summer (Jun-Jul-Aug) precipitation and temperature for a series of specific, discrete locations. These points represent sites (I'm an ...
LRouse's user avatar
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2 votes
1 answer
125 views

Finding areas with at least 7-days/year of sub-zero temps over 30 years using ERA5 in Google Earth Engine

I'm looking to make a climate zone map in Google Earth Engine (GEE). One of the criteria I'm using is frost occurrence- which is defined by having at least 7 days per year with a minimum temperature ...
user2031's user avatar
  • 221
1 vote
0 answers
387 views

Extract data from NetCDF file with tripolar projection for lat & long coordinates

I have coordinates obtained from Google Maps (latitude and longitude). I also downloaded a number of NetCDF4 files for different years and months that contain sea surface temperature (SST) from the ...
arman H's user avatar
  • 19
0 votes
1 answer
657 views

Google Earth Engine ERA 5 Precipitation [closed]

I am generating the estimation of the ERA 5 climate dataset. I read all the information, but I have a question. I need the precipitation data for a town area in Germany. I chose the total ...
L.J.E.'s user avatar
  • 153
0 votes
0 answers
50 views

How to convert scattered point to polygon in ArcGIS (e.g. Climate Zone)

I am new to ArcGIS and trying to crate global climate zone shapefile, covering both oceans and terrestrials. As you can see in the attached pictures, the original data comes in form of point, for ...
Fei's user avatar
  • 1
1 vote
1 answer
258 views

Extract daily area average value of ERA-5 minimum temperature of 30 years using GEE?

I'm struggling in finding a way to extract daily minimum temperatures for a particular month (at present for january) and a study area (an imported shapefile as chamoli), for a selected period of time ...
shravani banerjee's user avatar
0 votes
1 answer
140 views

Google Earth Engine - only extract values for each point based on a corresponding date

I have a list of occurrence points that I am collecting data for. Each point was collected on a specific date, with little overlap among when each organism was detected (data file with dates and ...
margie's user avatar
  • 15
0 votes
1 answer
292 views

Raster does not match the target extent and shape of another raster ArcGIS

I have future climate data in .nc format. I transferred them into multiband rasters so I can separate them using another tool and make some calculations. I faced one issue in one variable where it had ...
Areej's user avatar
  • 27
0 votes
1 answer
384 views

Using conditional statements on raster not working in R

I'm trying to do this thing where I'm classifying climate and R just seems to not like it when I do if/and functions I don't even know someone please help me So I created a new raster entitled "...
cherrychips's user avatar
2 votes
0 answers
201 views

GEE: How to calculate mean of specific images each year in image collection (NASA NEX-GDDP climate model)?

Google Earth Engine: I am trying to calculate some climatic projections for Ukraine from NASA NEX-GDDP data. This is the dataset I am using. I am using the min temperature ("tasmin") band. ...
Simba06's user avatar
  • 821
0 votes
1 answer
874 views

Converting units of m day-1 (ERA5) to mm (CRU)

I have downloaded 2 datasets, one from CRU (https://data.ceda.ac.uk/badc/cru/data/cru_ts/cru_ts_3.00/data) of cru_ts_3_00.1901.2006.pre.nc.gz and other is ERA5 data (https://cds.climate.copernicus.eu/...
Hallie Sheikh's user avatar
3 votes
2 answers
761 views

How to find the mean of a given variable in NetCDF regardless of latitude and longitude?

I have extracted temperature t2m data from a NetCDF file for certain regions, and now I would like to find the overall mean temperature per timestamp for the given regions. The dimension of the NetCDF ...
Thomas's user avatar
  • 895
0 votes
2 answers
184 views

How do I perform mathematic operations on raster data in R?

I downloaded a lot of WorldClim data, but there are some things that I wish to calculate that aren't given by WorldClim, like biotemperature and the aridity index. Biotemperature is definied by adding ...
cherrychips's user avatar
-1 votes
1 answer
58 views

Downloading CRU TS 3.0 data with custom temporal range

I want to download CRU TS 3.0 data from year 1960-1990. However in the website https://catalogue.ceda.ac.uk/uuid/c9dd2107e0b7e8c7b6aca7c34980f679 the data is downloaded from 1901-2006. Is there anyway ...
Hallie Sheikh's user avatar
2 votes
1 answer
95 views

Finding the average value of a gradient in a certain region in QGIS

In one QGIS project, I have a few TIFFs. One is a black-to-white gradient map showing average precipitation. Each pixel has a value that signifies how much yearly precipitation it gets. I have another ...
cherrychips's user avatar
1 vote
2 answers
3k views

Extracting ERA5 daily temperature and precipitation for different points using Google Earth Engine

I'm struggling at finding a way to extract daily average temperatures and total precipitations for different points (an imported table as FeatureCollection), throughout a selected period of time (few ...
Sebastian Marzini's user avatar
1 vote
1 answer
2k views

Joining wind speed and wind direction using Google Earth Engine

I have successfully exported wind speed to a csv file, and am trying to add wind direction. I know my wind direction calculation works and I can see it when printing ERA5total. If I understand ...
Olivier's user avatar
  • 105
0 votes
1 answer
308 views

Google Earth Engine: memory error when calculating monthly average precipitation for a small region using GLDAS data

I am trying to calculate the total monthly precipitation rate using the Rainf_f_tavg band of the GLDAS-2.1 image collection on Google Earth Engine (https://developers.google.com/earth-engine/datasets/...
Simba06's user avatar
  • 821
1 vote
1 answer
654 views

Can I access Worldclim 2.1 CMIP6 data in 30-second resolution?

I am trying to access the Worldclim 2.1 CMIP6 future climate data at 30-second resolution. The Worldclim website says 30-second data will be available by then end of March 2020. This is long overdue ...
apple's user avatar
  • 165
1 vote
4 answers
3k views

Downloading CHIRPS data sets using R

I have this code right here # Load package heavyRain and RCurl library(heavyRain) library(RCurl) #Assigning url and destfile url <- "ftp://chg-ftpout.geog.ucsb.edu/pub/org/chg/products/...
codeload's user avatar
1 vote
1 answer
1k views

Convert CSV file to NetCDF file

I have a CSV file with climate data, latitude, and longitude coordinates. RH PREC TEMP WS lat lon 65.93 1.51 287.43 4.67 63.31 177.62 70.43 1.89 285.32 1.54 ...
Thomas's user avatar
  • 895
1 vote
1 answer
141 views

CF compliance - why are certain variables required if WKT defined?

I'm trying to make a NetCDF CF-compliant, where the crs variable uses a WKT string. I'm using this compliance checker, testing against CF 1.7. I'm getting errors that certain attributes should be ...
Kyle's user avatar
  • 15