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Questions tagged [climate-data-operators]

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Downloading daily precipitation and temperature data from ERA5 using Google Earth Engine JavaScript API

I tried using the code below to download the data. I have doubts about the correctness of the code. Can you help me correct it? I encountered errors, which may be due to the large size of the dataset. ...
N Satish's user avatar
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1 answer
27 views

Hourly wind speed ERA5 data: not correct wind speed data exported

I am trying to export hourly wind speed data from ERA5 hourly dataset via GEE. I got a CSV file with system index and windspeed in separate columns. However, I think the values are incorrect, since ...
Swagatalaxmi Das's user avatar
1 vote
1 answer
42 views

Export hourly wind speed ERA5 data

I am trying to export hourly wind speed data from ERA5 hourly dataset via GEE. But when I am exporting the dataset it gives me daily average. I want a CSV file with dates, times in separate columns ...
Swagatalaxmi Das's user avatar
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0 answers
316 views

Converting projection type into lonlat gridtype with CDO in Ubuntu

I have an issue with the grids, I am using EUR-11 domain, rotated coordinates and I would like to convert them in lonlat so that I can cut the netCDF file into my study area, where I also have lonlat ...
Ann-Kathrin's user avatar
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0 answers
458 views

Converting Kelvin into degree Celsius with CDO

I am trying to convert Kelvin into Degree Celcius with cdo in Ubuntu. I am using this code: cdo -addc,-273.15 <infile> <outfile> and this one cdo -setattribute,tas@units="degC" -...
Ann-Kathrin's user avatar
1 vote
1 answer
700 views

Get data from NetCDF to CSV

I have a NetCDF file I want to get the data into the CSV file. I am using the following command. cdo outputtab,date,lon,lat,value era_temperature_2016.nc > test_2016.csv I am getting the following ...
Arkam's user avatar
  • 11
1 vote
0 answers
46 views

How to delete an island in NetCDF file using QGIS

I have a NetCDFf file (https://drive.google.com/drive/folders/10XvLZPC9vX9odkfU6aV6qBIxRe9IQvyZ?usp=sharing) The variable in the plot below is inside yelmo2d.nc --> z_srf The file contains height ...
meteo_96's user avatar
  • 283
2 votes
1 answer
544 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
3 votes
1 answer
1k views

Convert NetCDF to GeoTIFF using GDAL upside down

I want to convert monthly precipitation netCDF file, downloaded from TerraClimate data to GeoTIFF and available as 1 file per year. Example: http://thredds.northwestknowledge.net:8080/thredds/...
user97103's user avatar
  • 537
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0 answers
590 views

How to multiply one NetCDF file to multiple NetCDF files

I have one NetCDF file (region.nc) that I want to multiply to multiple NetCDF files such as the one in the picture using -mul from CDO.: The output should be new NetCDF files resulting from the ...
Sui's user avatar
  • 25
3 votes
2 answers
855 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
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1 answer
797 views

How to apply cdo mask command to loop over multiple .nc files in Python?

I want to use the cdo command for masking the .nc file (the command below): cdo div input.nc maskfile.nc outputfile.nc The command above should be applied over multiple .nc files (looping) in python, ...
Sui's user avatar
  • 25
0 votes
1 answer
668 views

Multiplying multiple specific areas in NetCDF file with constants

I have wind speed NetCDF files for the UK (land and sea areas) I wanted to multiply a constant (say 1.5) by the wind variable for all land areas and a constant (say 2.4) for all sea areas. How can I ...
Sui's user avatar
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1 vote
0 answers
773 views

Using R NetCDF raster stack is missing its CRS, how can I assign one?

The data I am using was not generated by me, however, I am stuck with using it anyways. My issue is, that in R, the CRS of the raster stack is missing or NA. If I open it with ArcGIS or Unidata (!the ...
daves_ma's user avatar
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0 answers
207 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 ...
Nina's user avatar
  • 1
6 votes
1 answer
2k views

Spatially merging NetCDF climate grids?

I'm currently working with a large number of CF-compliant NetCDF climate grids with global coverage that are organized as tiles across a file structure pertaining to particular "variables" and "years" ...
Trevor J. Smith's user avatar
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0 answers
968 views

Georeferencing NetCDF of Unknown Coordinate System Using Lat/Lon NetCDF

I have sea ice concentration netCDF's from this FTP. I want to georeference them based on the provided "LongitudeLatitudeGrid_3.125km_Arctic.nc" file, which contains both Lat and Lon bands (literally ...
Wassadamo's user avatar
  • 331
7 votes
1 answer
242 views

netCDF 4 file with relative time axis in arcpy

I'd like to process some netCDF 4 files with arcpy (ArcGIS 10.3.1). The original data comes from NCEP/NCAR project and contains wind vectors (uwnd/vwnd) for world-wide points (lon/lat) at certain time ...
ateko's user avatar
  • 145