Adding Compression to NetCDF-3 (Classic)

This document proposes adding compression to the netcdf-3 (aka classic) file format. The proposal has numerous limitations because of the nature of the existing netcdf-3 format.

The algorithm and data format proposed here requires re-writing an existing netcdf-3 file to move it to the new format. In effect, the re-written file becomes archival (read-only).

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MetPy Mondays #7- Contouring a Field on a Map

Last week we looked at how to create a simple base map with Cartopy. In this week’s MetPy Monday, we learn about contouring a field on the map and some of the idiosyncrasies of cyclic points. In the end, we will have a plot of the globe with the Coriolis parameter contoured. You can use this functionality to create height maps and more!

We’ll start off with importing the tools we will use: matplotlib, MetPy calculations, MetPy units, and numpy. We’re also using the magic %matplotlib inline so figures show up in the notebook instead of in separate windows.

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Event Notification for Thredds Servers

Periodically some of the Thredds servers run by Unidata get seriously overloaded. One cause is because external users poll the Thredds server to see what has changed. If the polling rate is too high then the performance of the Thredds server can seriously deteriorate.

I am proposing here to mitigate this problem by allowing Thredds servers to generate events that signal changes that might be of interest to users. Then, instead of polling, these users can watch for specific changes events and use that information to update their local databases (or whatever).

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MetPy Mondays #6 - Making a Basic Map with Cartopy

One of the most common tasks we do as geoscientists is make maps. Maps are a great way to look at massive amounts of data and synthesize it. In Python, Cartopy is the most current mapping package available and is what we use in all of our MetPy Gallery and Python Gallery examples. In this week’s MetPy Monday, we’ll look at the fundamentals of mapping with Cartopy and create a couple of simple base maps that data can be plotted on.

MetPy Mondays #5 - Python Resources

Don't know where to start on your Python journey? We’ve developed a lot of material here at Unidata to help you out! This week, we’ll go over the resources and show you how to use the example galleries and documentation pages to explore the capabilities of MetPy and the other Unidata Python products.

Unidata Developer's Blog
A weblog about software development by Unidata developers*
Unidata Developer's Blog
A weblog about software development by Unidata developers*

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