Climate Data

AIRS and AMSU: Trace Gases (CO2, CO, CH4, O3...); Level 3

AIRS provides satellite retrieval of mid-tropospheric carbon dioxide even under cloudy conditions, without the use of a priori information from models. AIRS retrievals use cloud-cleared thermal IR radiance spectra in the 15 micron band with an accuracy better than 2 ppm. AIRS retrievals have been used to produce global maps of carbon dioxide and other trace gases including ozone, methane, and carbon monoxide.

Key Strengths:

  • Near global coverage with high horizontal and vertical resolutions and frequent sampling

Key Limitations:

  • Inconsistent sampling with latitude
temporal metadataID:



Sub-daily | Daily | Monthly

Data Time Period Extended?

yes, data set is extended


Spatial Resolution

1x1, 2x2.5, assorted levels

Ocean or Land


Missing Data Flag

missing data present

Earth system components and main variables

Data Access: Please Cite data sources, following the data providers' instructions.

Key Figures

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Cite this page

National Center for Atmospheric Research Staff (Eds). Last modified 14 Oct 2013. "The Climate Data Guide: AIRS and AMSU: Trace Gases (CO2, CO, CH4, O3...); Level 3." Retrieved from

Acknowledgement of any material taken from this page is appreciated. On behalf of experts who have contributed data, advice, and/or figures, please cite their work as well.