Andrew Hazelden's Blog

Here is a photo of a meteorological phenomenon called a Parhelion also known as a Sundog. The Photo was taken last year in West Dover with a Peleng 8.5mm wide angle lens.

Parhelion

This is a high definition time-lapse movie of a thin sheet of ice breaking up on the last day of Winter in West Dover, Nova Scotia. Shot on a Canon Powershot SD780IS camera with the CHDK firmware.

Watch on Youtube

Hi. This is a simple tutorial on how to compile GrADS 2 from source using Mac OS X and a few tools you can download from the internet.

GrADS Grid Analysis and Display System is a powerful program for visualizing weather data. GrADS is a great program for plotting meteorological data using GRIB2 files.

The homepage for GrADS is:
http://iges.org/grads/

Step 1.

To compile grads-2 for MAC OS X you will need Mac Ports. Mac Ports is a system that allows you to explore the world of open source software from the comfort of your Mac.

Download Mac Ports from:
http://www.macports.org/install.php

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I just discovered the Mac GUI for GrADS (Grid Analysis and Display System) called McGraG v1.1.0 Beta.

It was easy to install and start up. It is able to run grads scripts and also has a command line text field for entering individual grads instructions.

This should make viewing GRIB weather data a lot more accessible to mac users.