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Volume 10, issue 3 | Copyright
Atmos. Meas. Tech., 10, 759-782, 2017
https://doi.org/10.5194/amt-10-759-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 07 Mar 2017

Research article | 07 Mar 2017

Structural uncertainty in air mass factor calculation for NO2 and HCHO satellite retrievals

Alba Lorente et al.
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Cited articles
Acarreta, J. R., De Haan, J. F., and Stammes, P.: Cloud pressure retrieval using the O2-O2 absorption band at 477 nm, J. Geophys. Res., 109, d05204, https://doi.org/10.1029/2003JD003915, 2004.
Anderson, G. P., Clough, S. A., Kneizys, F. X., Chetwynd, J. H., and Shettle, E. P.: AFGL Atmospheric Constituent Profiles (0–120 km), Environ. Res. Papers, Optical Physics Division, Air Force Geophysics Laboratory Hanscom AFB, MA, 43 pp., http://nla.gov.au/nla.cat-vn4005592, 1986.
Barkley, M. P., Palmer, P. I., Ganzeveld, L., Arneth, A., Hagberg, D., Karl, T., Guenther, A., Paulot, F., Wennberg, P. O., Mao, J., Kurosu, T. P., Chance, K., Müller, J.-F., De Smedt, I., Van Roozendael, M., Chen, D., Wang, Y., and Yantosca, R. M.: Can a “state of the art” chemistry transport model simulate Amazonian tropospheric chemistry?, J. Geophys. Res., 116, d16302, https://doi.org/10.1029/2011JD015893, 2011.
Barkley, M. P., Kurosu, T. P., Chance, K., De Smedt, I., Van Roozendael, M., Arneth, A., Hagberg, D., and Guenther, A.: Assessing sources of uncertainty in formaldehyde air mass factors over tropical South America: Implications for top-down isoprene emission estimates, J. Geophys. Res., 117, 2156–2202, https://doi.org/10.1029/2011JD016827, 2012.
Barkley, M. P., De Smedt, I., Van Roozendael, M., Kurosu, T. P., Chance, K., Arneth, A., Hagberg, D., Guenther, A., Paulot, F., Marais, E., and Mao, J.: Top-down isoprene emissions over tropical South America inferred from SCIAMACHY and OMI formaldehyde columns, J. Geophys. Res., 118, 6849–6868, https://doi.org/10.1002/jgrd.50552, 2013.
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Short summary
Choices and assumptions made to represent the state of the atmosphere introduce an uncertainty of 42 % in the air mass factor calculation in trace gas satellite retrievals in polluted regions. The AMF strongly depends on the choice of a priori trace gas profile, surface albedo data set and the correction method to account for clouds and aerosols. We call for well-designed validation exercises focusing on situations when AMF structural uncertainty has the highest impact on satellite retrievals.
Choices and assumptions made to represent the state of the atmosphere introduce an uncertainty...
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