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Questions tagged [climate-data-operators]

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7 votes
1 answer
244 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
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
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
3 votes
2 answers
880 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
  • 925
2 votes
1 answer
560 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 vote
1 answer
44 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
1 vote
1 answer
744 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
1 vote
0 answers
774 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
0 votes
1 answer
217 views

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
0 votes
1 answer
676 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
  • 25
0 votes
0 answers
12 views

Preferred Remapping technique for different variables [closed]

I am working with NetCDF temperature, precipitation data (0.1 degree from CDS store) and population density data (2.5 min from SEDAC) and often have to change the resolution of either data to achieve ...
Mayweed's user avatar
0 votes
1 answer
38 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
0 votes
0 answers
481 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
0 votes
0 answers
598 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
0 votes
1 answer
805 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
0 answers
213 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
0 votes
0 answers
973 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