on October 1, 2022

What tools allow a quick comparison of NetCDF output from ocean models?

Earth science

Asked by: Amanda Carter

How do I view netCDF files?

NetCDF files usually have the extension . nc. To read NetCDF files there are tools with a graphical interface like Matlab, IDL, ArcGIS, NCView, Xconv and developer (programming) tools like the Unidata NetCDF4 module for Python and Xarray.

How do I extract data from netCDF?

How to extract and plot a time series of variable for a specific longitude and latitude from a netCDF file?

  1. Context.
  2. MyOcean: Preview area of interest.
  3. Download the data. Geographical area. …
  4. Generate 2D Time series Plot.
  5. Customize a 2D Time series Plot. Grid Tab. …
  6. Export the data to tabular format (.csv, .txt)


Is netCDF a raster or vector?

1 The raster package



The raster package is large library of functions and methods for dealing with, as its name implies, raster data sets, including many geospatial formats, including netCDF.

How do I convert NC to excel?

How to Convert NC File In Excel

  1. Download and open Panoply tool.
  2. Open your file by using File-Open.
  3. Right-click on your variable.
  4. Select ‘Export CSV…’


What is the difference between HDF5 and netCDF?

NetCDF4 uses a subset of HDF5 features, and adds some new features. NetCDF4 reads/writes specially structured HDF5 files. Performance of HDF5 and NetCDF4 is highly similar including on supercomputers. The main idea behind NetCDF4 is a simpler API than HDF5, while maintaining the same performance.

How do you plot a netCDF file in Python?

Plot netCDF data on a map

  1. Plot netCDF data on a map.
  2. First we need to import netCDF4-python, Numpy, Matplotlib for plotting, and Basemap for the map.
  3. Load in the netCDF file.
  4. Read the variables from the netCDF file and assign them to Python variables.

Can QGIS open netCDF files?

To open NetCDF data in QGIS is the same with opening Raster Data. Therefore from QGIS Layer Menu select Data Source Manager as shown in figure 1. From the data source manager window as seen in figure 2. Select Raster and then browse to the NetCDF file to be opened.



What is Ncdump?

The ncdump tool generates an ASCII representation of a netCDF file on standard output, either with or without an ASCII representation of the variable data in the file. The ASCII representation used is the CDL notation that ncgen accepts as input.

How do I import netCDF4 into Python?

To install with anaconda (conda) simply type conda install netCDF4 . Alternatively, you can install with pip . To be sure your netCDF4 module is properly installed start an interactive session in the terminal (type python and press ‘Enter’). Then import netCDF4 as nc .

How is data stored in netCDF?

The data in a netCDF file is stored in the form of arrays. For example, temperature varying over time at a location is stored as a one-dimensional array. Temperature over an area for a given time is stored as a two-dimensional array.

How do I read a netCDF file in ArcGIS?

Start ArcMap. Select the tool “Make NetCDF Raster Layer” by either using the “Search” or expanding the branch “Multidimension Tools” in the “ArcToolbox”. For the input field “Input netCDF File” select the NetCDF file downloaded in step 1. Click the Variable drop-down arrow and choose a variable from the list.

Is netCDF a raster?

Using the Make NetCDF Raster Layer tool from the Multidimension Tools toolbox, you can create a raster layer from a netCDF variable. The output raster layer can be used in other tools that accept rasters as input for further analysis.



Is netcdf4 a HDF5?

The netCDF-4/HDF5 File Format is an approved standard recommended for use in NASA’s Earth Science Data Systems in March 2011. Appendix B of the specification document provides guidelines that will enable HDF5 users to create files that will be accessible from netCDF-4.

What is nc4 data?

NetCDF-4 (Network Common Data Form, version 4) Description. NetCDF is a set of software libraries and self-describing, machine-independent data formats for array-oriented scientific data.

How do I view NC files in Windows?

You can use programming languages or windows software. If you want just to view nc file and display it, Panoply is the best and you can use free version of Netcdf Extractor for viewing. But, if you want to extract time series from one file or many files, you can use Netcdf Extractor and do it easily.

How do I convert NC to CSV?

xarray usage to convert netcdf to csv



We open the netcdf file (using open_dataset() method), convert it to a dataframe ( to_dataframe() method) and write this object to a csv file ( to_csv() method).



How do I open a NC file in Linux?

Step 1 – Open nc file:

  1. The main screen of the “Open NC file” tool with the open file/files icon. …
  2. Select the desirable file/files by browsing. …
  3. Set the spatial dimensions. …
  4. See the variables name with other different details. …
  5. See the dimensions of variables.

How do I open an Arcgis NC file?

Making a netCDF raster layer

  1. Start ArcMap.
  2. Click OK on the ArcMap startup dialog box.
  3. Open the Make NetCDF Raster Layer tool. …
  4. For the Input netCDF File value, type or browse to C:\NetCDF\temperature.nc.
  5. Accept default values for Variable (tmin), X Dimension (lon), and Y Dimension (lat) parameters.

Can I open NC file in Qgis?

There are different ways to open a netCDF file in QGIS. Either click on the icon on the top left, as shown below, or drag and drop a file directly onto the map canvas. Choose a netCDF file (. nc), then click on the variable you want; for example, temperature.

How do I convert NC file to shapefile in ArcGIS?

I Arc GIS use Multidimention Tool and make netcdf to raster then raster to point …it can be easily done ….all the best ! Une Multidimensional Tool in ArcGIS… Use tool “make NetCDF feature layer” then select your . nc file ..select variables to display