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Questions tagged [netcdf]

NetCDF (Network Common Data Form) is a binary file format for storing array-oriented scientific data. Use this tag for questions about programmatically encoding and/or decoding data to/from NetCDF files.

NetCDF (Network Common Data Form) is a binary file format for storing array-oriented scientific data.

From version 4, NetCDF files use the HDF5 format as container, and therefore can be read by HDF5 readers. Reliance on the HDF5 format also enabled easy parallel I/O and efficient compression.

References

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NetCDF: Not a valid data type or _FillValue type mismatch

I'm using cdo on cygwin to pre-process some CMIP6 simulations, in netcdf format. I just got the message error for the CESM2 model : NetCDF: Not a valid data type or _FillValue type mismatch I never got this message error before, with other models I…
luric
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Extract values from online netCDF timeseries without downloading whole files

I'm brand new in python & gdal (stepping outside of my R-world specifically for this), so if you need anything more to make this reproducible or more clear, please let me know! I'm trying to extract time series data from several netCDF files WITHOUT…
Sanne
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Data extracted by NetCDF is mirrored in the X axis

Hi I have the elevation map from the side: https://www.ngdc.noaa.gov/mgg/global/relief/ETOPO1/data/bedrock/grid_registered/netcdf/ I want to extract the elevation data of the dataset and change the interpolated values with it. Unfortunately I have…
Weiss
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how to select range of time of a variable from netcdf using python

I have a daily netcdf data containing a point data of single lat and lon. The shape of vairable (var.shape) is ('time', 'z'), here z is depths in ocean. I want to select and plot a varaible within a specified date range (2019-01-01 to 2020-12-31)…
linux_lover
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Display Noaa Elevation Data

I have found the example and would like to copy it: import numpy as np import matplotlib.pyplot as plt from netCDF4 import Dataset data = Dataset("Path/ETOPO1_Bed_g_gmt4.grd",'r') print(data.variables.keys()) lon_range =…
Weiss
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How to combine 'variables' from multiple NetCDF files into a single NetCDF file?

I am working with ocean currents data generated using ROMS model output in NetCDF format. Each NetCDF file contains the monthly mean of ocean currents velocity i.e., only one time step. So far I've reached here. import netCDF4 import pandas as…
Omi
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TypeError: invalid type promotion xarray spatial mean

I'm trying to calculate a meridional cosine weighted mean of a sub-region and timeslice of a netcdf dataset, here is my code, from netCDF4 import Dataset import xarray as xr import numpy as…
ClimateUnboxed
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Faster efficient way to crop netcdf in R

I have a .nc/netcdf file which is about 1GB in size. Trying to crop and make it smaller with the following code: r <- terra::rast("myfile.nc") r2 <- terra::crop(x = r, y=terra::ext(-79, -72, 0, 12.4)) fails in a 16GB RAM machine. By failing I…
Dan
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How to write Climpact compatible netCDF file in R?

I am a beginner with Spatio-temporal data in R. I have daily precipitation data in .tif format and I created netCDF file to use as input to Climpact. But I get an error when I use this data as input to Climpact. Fehler in create.file.metadata(f,…
Dipesh Chapagain
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How to plot the first day start of rainfall season with specific conditions with netcdf data on certain area?

I have NetCDF daily precipitation data with dimensions: time: 153 (I cropped the NC file so it has 1st August as the first date), longitude: 401, latitude: 121. I want to calculate and plot in certain areas the first day of the rainy season with…
wonnawoo
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How to merge multiple NETCDF file into one?

I have downloaded monthly soil moisture data from GLDAS in NETCDF format. Each file contains data for multiple variables of an individual month. I want to extract soil moisture data from each file and merge them into one file. So that I can get a…
pragati Kharya
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How to merge all netcdf files that are in the same directory into one?

I'm trying to merge multiple NETCDF files into one. They all have the files in one directory and have the same starting name so I used this script: import xarray ds = xarray.open_mfdataset(r'D:\copernicus-tmp-data\2019\CMEMS*.nc',combine =…
sir_bro
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Problem displaying geoserver's layer when resource is updated with rest API

I am having a weird issue when using geoserver api to update a netcdf resource of a coverage store layer. The resource is a netcdf containing one 3D (lon, ,lat, time) variable. However, the time dimension is only of length = 1. My code runs within a…
JulienRobitaille
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How to extract data point for a xy coordiante from raster without projected lat lopn coordinates

Hi am trying to extract values for xy point from a sample raster stack ras_dt. The ras_dt is EQUATES data with gridded coordinates within the domain of -115.00,38.00,-110.05,45.00. How can I change the projection and the lat lon coordinates of this…
Lily Nature
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Want to plot NetCDF data over Shapfile region only?

I have a shapefile of the State of India called Rajasthan and I want to plot precipitation data over it only. I am unable to find a solution anywhere. I am providing the code as well as the plot down below. Basically what I am doing over here is…
Harsh Kotecha
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