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| Titel |
OMI tropospheric NO2 profiles from cloud slicing: constraints on surface emissions, convective transport and lightning NOx |
| VerfasserIn |
M. Belmonte Rivas, P. Veefkind, H. Eskes, P. Levelt |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 23 ; Nr. 15, no. 23 (2015-12-09), S.13519-13553 |
| Datensatznummer |
250120209
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| Publikation (Nr.) |
 copernicus.org/acp-15-13519-2015.pdf |
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| Zusammenfassung |
| We derive annual and seasonal global climatologies of tropospheric NO2
profiles from OMI cloudy observations for the year 2006 using the cloud-slicing method
on six pressure levels centered at about 280, 380, 500, 620, 720
and 820 hPa. A comparison between OMI and the TM4 model tropospheric
NO2 profiles reveals striking overall similarities, which confer great
confidence to the cloud-slicing approach to provide details that pertain to
annual as well as seasonal means, along with localized discrepancies that
seem to probe into particular model processes. Anomalies detected at the
lowest levels can be traced to deficiencies in the model surface emission
inventory, at mid-tropospheric levels to convective transport and horizontal
advective diffusion, and at the upper tropospheric levels to model lightning
NOx production and the placement of deeply transported NO2 plumes
such as from the Asian summer monsoon. The vertical information contained in
the OMI cloud-sliced NO2 profiles provides a global observational
constraint that can be used to evaluate chemistry transport models (CTMs) and
guide the development of key parameterization schemes. |
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