andrewharvey/bom-rainfall-radar-intensity-stats

Produce rainfall statistics from the BOM rainfall radar images

About

The Australian Bureau of Meteorology publishes rainfall radar images of various sites around Australia. e.g. http://www.bom.gov.au/products/IDR713.loop.shtml

This repository is focused on presenting that data in alternate forms of display.

As such it is broken up into several parts as follows.

rainfall_stats

This program will inspect a given radar image and generate a simple CSV report on the occurrences of the different rainfall intensity values present in the image.

To make it easier to produce results over many radar images the report-using-file-glob.sh program is designed to generate a single CSV report of all the radar images present in the IDR directory.

To populate an IDR directory with radar images you may like to use the scripts at https://gist.github.com/1340891.

rest-api

Once you have CSV reports produced from rainfall_stats you may use the scripts in rest-api to load this data into MongoDB and run an API server serving out this data from MongoDB in JSON format.

import-csv-stats-to-mongodb.sh will do the initial import into MongoDB and stats-rest-api-server.pl will sit and listen for requests for a specific radar code between two datetimes.

d3-rainfall-graph

One you have the API server running or a sample JSON file generated from the API server (try make sample-export) you can open up rainfall-graph.html which (once you have configured it to find the d3 library) produce a graph of the different rainfall intensity occurrences over time.

dygraphs-rainfall-graph

Like d3-rainfall-graph, the code in dygraphs-rainfall-graph produces a graph, but using the Dygraphs library instead of D3. Dygraphs requires less code and already supports interactivity. Rather than consuming a JSON file it consumes a CSV file as produced by csv2dygraphs.pl. A sample will be produced using make sample-export.

TODO

• Try to get the BOM to release the radar images under CC-BY as per the Intellectual Property Principles for Australian Government Agencies so I can release a public demo.
• Allow the whole process to run in real time
• Show source radar image for cursor location
• Allow user to select geographic region to limit results to
• Store radar image in PostGIS as a raster and possibly cut out rainfall_stats and rest-api as a result

License

All the files within this repository are released under the CC0 license by Andrew Harvey [email protected]. Although not required, I would prefer you give Attribution and release derived works or modifications under the same CC0 license.

To the extent possible under law, the person who associated CC0
with this work has waived all copyright and related or neighboring
rights to this work.
http://creativecommons.org/publicdomain/zero/1.0/