Infrared Working Group

The Infrared Working Group (IRWG) represents a network of infrared Fourier-transform spectrometers that is part of the Network for the Detection of Atmospheric Composition Change (NDACC). It is a multi-national collection of over twenty high resolution spectrometers that regularly record the atmospheric absorption spectrum from sites distributed from pole to pole. The absorption spectra are used to retrieve concentrations of a number of the gaseous atmospheric components, including: O3, HNO3, HCl, HF, CO, N2O, CH4, HCN, C2H6 and ClONO2.

IRWG Working Group in 2023

The IRWG Working Group 2023 meeting in Spa, Belgium.

Recent Infra-Red Working Group Meeting hosted at Wanaka, New Zealand, May 2017.

List of gases that are or might be measured by ground based FTS.

List of gases that are or might be measured by ground based FTS. 'Measured' are those that can be measured routinely at a typical NDACC/IRWG site. 'Episodic' are gases that may be measured during episodic events or at some sites with unique optical configuration or just not routinely. 'Possible' are gases that are currently at or below the detection limit of the technique.

*Retrieval information limited by spectroscopy.

Read NDACC News.


Please direct questions/comments about this page to:

Jim Hannigan

Infrared Working Group