Healthy Environment, Healthy Community, Healthy Business

Environment Protection Authority

Noise enhancement wind analysis program

About the program

NEWA program

The NEWA (noise enhancement wind analysis) program has been developed to assist people in analysing meteorological data to determine whether or not wind is a 'feature' of an area as defined by the NSW industrial noise policy guidelines. It uses the following data:

  • meteorological data
  • noise source location
  • receiver location
  • wind speed range
  • angle of winds.

Also accompanying the NEWA program are:

  • sample files of meteorological data
  • NEWA usernotes
  • a background report.

What you need to run NEWA

Before using the program you must have access to computer-compatible meteorological data file(s) that represent wind conditions in the area where the assessment is to be applied. The data should cover the seasons and periods (day, evening or night) which need to be considered in the assessment.

Suitable data can be obtained from a number of sources including the Bureau of Meteorology, Sydney Water, the Environment Protection Authority, consultants and industries.

The program can process data in three different formats including 'comma separated values' (CSV). This allows the user to easily prepare any data file into the required format from a number of sources (for example the Bureau of Meteorology) using a spreadsheet or a text editor usually with only a modest amount of manipulation.

Note: Weather stations record the direction from which the wind is blowing, relative to True North. It is expressed in degrees measured clockwise from geographical (true) north. NEWA follows this convention. This can be confirmed using the single direction sample files accompanying the program.

Documents to download:


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Page last updated: 12 June 2013