Questions tagged [climate]

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

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16 views

Can AGB be estimated from satellite data? [closed]

I want to estimate AGB using MODIS data. Are there any texts which finds AGB without the field data like forest inventory, temperature, tree trunk diameter?
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1answer
23 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 ...
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1answer
19 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 ...
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1answer
29 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 ...
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1answer
30 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 "...
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21 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. ...
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0answers
18 views

Creating one raster with paletted categories from a raster stack

Basically, I've stacked a few rasters in R, and I want to create a climate classification map. I have a stack of rasters that have temperature and precipitation information. I want to make one raster ...
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1answer
46 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/...
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1answer
74 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 ...
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34 views

How to read multiple GRIB files in R and take mean of those rasters?

I have downloaded multiple monthly mean GRIB files from https://cds.climate.copernicus.eu/cdsapp#!/dataset/ecv-for-climate-change?tab=form for Surface Air temperature , from 1979 to 1990. 144 GRIB ...
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2answers
36 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 ...
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1answer
22 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 ...
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1answer
39 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 ...
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2answers
452 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 ...
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1answer
335 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 ...
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1answer
115 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/...
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1answer
153 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 ...
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3answers
823 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/...
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1answer
505 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 ...
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1answer
52 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 ...
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1answer
57 views

Cropping NetCDF by NCO

I would like to crop my NetCDF file for a specific location using NCO. However, I am quite lost in the documentation. So far, I've tried this: ncks -v Precipitation_Flux -d lon,-18.751,-7.684314, -d ...
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1answer
110 views

How can the maximum temperature (tmmx) band in the TerraClimate GEE dataset be interpreted?

This question was already asked here. But there was no correct answer. link I'm using the precipitation, maximum temperature (tmmx) and soil moisture in the TerraClimate dataset in GEE. I cannot find ...
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0answers
25 views

Identification of cloudy days based on Net Radiation data

How can I identify that a particular day is cloudy or clear sky based on the daily time series of Net Radiation (calculated at FluxNet/AMERIFlux sites)? I read somewhere that clear sky radiation has ...
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1answer
155 views

Calculating monthly averages from daily precipitation data

I have a raster brick for daily precipitation data and I need to convert it to monthly data, how would I go about doing this? Each layer is a day and there are 34698 days (i.e. too many to go through ...
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0answers
261 views

Spatial interpolation of climate data using latitude, longitude and elevation in r

I have downloaded E-OBS gridded daily climate data on 0.1-degree grid. For each grid point, I have longitude, latitude, elevation and climate data, i.e. precipitation sum / mean temperature. Now, I ...
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0answers
20 views

Download Daymet tileID grid?

I'm trying to download tiled Daymet climate data ([see here])1. One can automate this process using a shell script, but you need to know the tileIDs that you want. Is there a way to download the tile ...
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1answer
69 views

How to replace an ImageCollection stored as variable by an ImageCollection stored as Asset in a GEE script?

I'm trying to clip and export climate data (annual max) from one ImageCollection to an already existing table with (annual max) NDVI values and clip them with conflict points stored in ...
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1answer
138 views

Reduce image collection to annual maximum in GEE

I want to control my NDVI trends with climate variables. Therefore I am using temperature, precipitation and soil moisture. But since my NDVI is in annual maximum I need to have the same format for ...
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0answers
24 views

Create map of frost free days using Daymet data in ArcGIS

I stumbled on DAYMET today for creating graphs in R for frost free days at a given location. This was all using boiler plate code someone in my agency made where you just change lat/long; I'm an R and ...
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1answer
152 views

Why does extracting the values from climate data rasters to points take so much time in the Google Earth Engine (GEE)?

I have written a script in the Google Earth Engine to extract values from 5 images (all climate data) to a list of points which I have imported from a csv to a feature collection. In principle it ...
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2answers
1k views

Export ERA5 Image Collection data from Google Earth Engine

I'm trying to export the ERA5daily Image Collection data from Google Earth Engine using the GEE API in python. I need the Max Temp, Min Temp and Average Temp for the time between 1979 and 2016 (in the ...
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1answer
277 views

How many bands can a single NetCDF file contain?

I am collecting some precipitation data (centimeters of precipitation per day) from the Gridmet dataset (http://www.climatologylab.org/gridmet.html). The data comes in a NetCDF format and there is a ...
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0answers
707 views

Rotate coordinates from climatic data in raster format (cordex-EU domain 11) to usual coordinate systems

I am trying to create a dataset that shows future climatic condition in Europe aggregates to NUT2 administration level in R. To do so, i work with cordex data (domain EU 11), that is coming ...
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1answer
70 views

Moving max using calc and movingFun on a stack of 12 rasters r

I have downloaded the netcdf files of climate water deficit (def) from TerraClimate, years 1981-2010. Each raster is a monthly def for my region of interest, that being entire India. I created a ...
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1answer
151 views

Cannot extract data from raster in QGIS

I'm trying to extract climate variables in QGIS for sample points with a raster dataset. The raster comes from ClimateNA (https://adaptwest.databasin.org/pages/adaptwest-climatena) and is available as ...
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1answer
722 views

Calculating ERA5 2018 monthly 2mt temperature anomalies in Google Earth Engine

I am trying to calculate in Google Earth Engine using ERA5 the monthly 2mt temperature anomalies from January to December 2018 compared to the long-term reference period of 1981-2010. In other words, ...
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0answers
138 views

Aggregate Willmott and Matsuura Temperature Climate Data on Country Level

I'm looking for monthly mean temperature data on the country-level since 1900, or at least 1950, with temperature weighted according to population density. The common database for the spatial ...
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0answers
78 views

Shift time in NetCDF files

I have a folder which contains (monthly) nc files from January 1980 to December 2015 with hourly data for different compounds (such as PM2.5, O3, NO2, NO, etc).The time is in UTC as follows: int ...
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0answers
98 views

Daily averages in local time from UTC

It has been almost 2 weeks since I started getting familiar with netCDF files and operators (NCO) and climate data operators (cdo) and I am not an experienced programmer. I have a folder which ...
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0answers
86 views

Automating Model Builder (ArcMap) for NetCDF Processing

I have a NetCDF with 30+ years of monthly data from which I want to find the climatological normal. Using the NetCDF tutorial I found through NOAA (https://www.esrl.noaa.gov/psd/data/gridded_help/...
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1answer
528 views

Performing trend analysis with R?

I have data of monthly temperature for 60 years. I want to analyze the trend for the monthly temperature in R. How do I construct R Code which would analyze monthly trend over the time series to ...
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1answer
203 views

Opening .clim file with QGIS

I downloaded data from http://climate.geog.udel.edu/~climate/html_pages/download.html in order to retrieve temperature and precipitation data. What I actually want is mean temperature and ...
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1answer
212 views

Plotting data only inside polygon in MATLAB?

We can plot data with polygon in MATLAB as a data size of 651*1200*12 S.X and S.Y shows the X and Y values of polygon. for i = 1:12 subplot(4,3,i) pcolor(lon1,lat1,data(:,:,i)) ; shading interp ; ...
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2answers
37 views

Specifying which point buffers fall within a particualar land type (polygon)

I have a point buffer layer which represents tick occurrence and a polygon layer which represents landcover types (derived from Corine land cover). I want to define which point buffers (1km) fall ...
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0answers
31 views

How to create a surface layer from gridded point data of air temperature and Precipitation?

I want to aggregate monthly averages of temperature and precipitation over a 10-year period into weighted seasonal averages (DJF) for use in interpolation. I have downloaded Shapefiles for each month (...
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2answers
239 views

skimulator - Python error message on Windows 10 - load_entry_point

I am running python code called skimulator on Windows 10 to model Arctic ice drift and sea/wave velocities for a satellite mission in 2025. Its installed using Anaconda navigator with a python 3, ...
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1answer
2k views

Error message, for "pip install /path/to/the/skimulator/directory" on Windows 10 Anaconda/python

I am trying to install skimulator on my windows 10 system. This is for simulating images of sea ice drift in the Arctic, for 2025 satellite mission. I have installed Anaconda/python and followed the ...
2
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1answer
48 views

Presenting climate data over time?

I'm trying to map (using ArcMap 10.6.1) some climate change data and I'm not entirely sure how to classify the raster datasets. For this work I am focusing on four different climate change scenarios: ...
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1answer
352 views

Any efficient workaround to reshape and aggregate multi-layers raster grid in R?

I have historical daily minimum/maximum temperature observations data in two big netCDF file, so I used raster::stack to import those in RasterStack object. However, here I want to reshape and ...
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1answer
695 views

Extracting Netcdf climate data for multiple locations at different times using R?

I have daily sea surface temperature and air temperature data from 1980 to 2018. How do I extract values for multiple (up to 100) specific locations at different dates in one go to csv. Right now I ...