References

ACP

Atmospheric Chemistry and Physics

ACP

Atmos. Chem. Phys.

1680-7324

Copernicus Publications

Göttingen, Germany

10.5194/acp-14-103-2014

Global carbon monoxide products from combined AIRS, TES and MLS measurements on A-train satellites

Warner

J. X.

¹ Yang

¹ Wei

¹ Carminati

https://orcid.org/0000-0002-2638-1927

¹ ⁵ ⁶ Tangborn

² Sun

³ Lahoz

⁴ ⁵ Attié

J.-L.

⁵ ⁶ El Amraoui

⁵ Duncan

⁷

Department of Atmospheric & Oceanic Science, University of Maryland, 3433 Computer & Space Sciences Bldg, College Park, MD, USA

Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD, USA

Universities Space Research Association, 10211 Wincopin Circle, Columbia, MD 21044, USA

Norwegian Institute of Air Research, Instituttveien 18, Kjeller 2027, Norway

CNRM-GAME, Météo-France and CNRS, UMR3589, Toulouse, France

Laboratoire d'Aérologie, Université de Toulouse, CNRS, UMR5560, Toulouse, France

Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA

03 01 2014

14 1 103 114

2014

This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/

This article is available from https://acp.copernicus.org/articles/14/103/2014/acp-14-103-2014.html

The full text article is available as a PDF file from https://acp.copernicus.org/articles/14/103/2014/acp-14-103-2014.pdf

This study tests a novel methodology to add value to satellite data sets. This methodology, data fusion, is similar to data assimilation, except that the background model-based field is replaced by a satellite data set, in this case AIRS (Atmospheric Infrared Sounder) carbon monoxide (CO) measurements. The observational information comes from CO measurements with lower spatial coverage than AIRS, namely, from TES (Tropospheric Emission Spectrometer) and MLS (Microwave Limb Sounder). We show that combining these data sets with data fusion uses the higher spectral resolution of TES to extend AIRS CO observational sensitivity to the lower troposphere, a region especially important for air quality studies. We also show that combined CO measurements from AIRS and MLS provide enhanced information in the UTLS (upper troposphere/lower stratosphere) region compared to each product individually. The combined AIRS–TES and AIRS–MLS CO products are validated against DACOM (differential absorption mid-IR diode laser spectrometer) in situ CO measurements from the INTEX-B (Intercontinental Chemical Transport Experiment: MILAGRO and Pacific phases) field campaign and in situ data from HIPPO (HIAPER Pole-to-Pole Observations) flights. The data fusion results show improved sensitivities in the lower and upper troposphere (20–30% and above 20%, respectively) as compared with AIRS-only version 5 CO retrievals, and improved daily coverage compared with TES and MLS CO data.

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