Panoply netCDF, HDF and GRIB Data Viewer

Download Panoply

Panoply 4 for macOS requires a computer with a Java SE 8 runtime environment installed.

The current version of Panoply is 4.10.2, released 2018-11-29.

Install and Run Panoply

After downloading the appropriate Panoply archive linked above, uncompress the archive file on your desktop. Within is a README text file with an explanation of the contents of the download, instructions on how to launch the application, and some notes on possible launch bugs and/or performance tuning.

We would like to point out the following possible installation and launch issues:

If you find that after download and installation, Panoply won't start, a possible reason might be that you don't have a Java Runtime Engine (JRE) installed on your computer, or that it is not a Java 8 (or later) JRE. To check for this, use the website utility that looks for Java on your desktop and automatically downloads it if necessary. Go to and click on the "Free Download" button.

On Windows: You must extract Panoply from the ZIP archive before you try to run it. If you simply open the ZIP file and then double-click on the Panoply icon, you will get a class-loader error because it cannot locate code files.

On Linux etc: The TGZ archive of Panoply "generic" was created using a BSD tar on macOS. Using GNU-tar to uncompress the package will probably print several "Ignoring unknown extended header keyword" warning messages. You should be able to ignore these messages.

Download Color Tables and Map Overlays

Beginning with version 4, Panoply's "standard" selection of color tables and map overlays is built into the application. Additional color tables and map overlays may be opened for a single session or added to your favorites library for continued use. See the Panoply website for some optional support files.

For additional scale color tables, J.J. Green's cpt-city website includes many CPT format files that are compatible with Panoply.

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