Print Email Facebook Twitter OMI tropospheric NO2 profiles from cloud slicing: Constraints on surface emissions, convective transport and lightning NOx Title OMI tropospheric NO2 profiles from cloud slicing: Constraints on surface emissions, convective transport and lightning NOx Author Belmonte Rivas, M. Veefkind, P. Eskes, H. Levelt, P. Faculty Civil Engineering and Geosciences Department Geoscience & Remote Sensing Date 2015-12-09 Abstract 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. Subject OA-Fund TU Delft To reference this document use: http://resolver.tudelft.nl/uuid:6d72899c-f13c-468e-b89b-67c3435cc5ab Publisher European Geoscience Union ISSN 1680-7316 Source https://doi.org/10.5194/acp-15-13519-2015 Source Atmospheric Chemistry and Physics, 15, 2015 Part of collection Institutional Repository Document type journal article Rights © 2015 The Author(s)CC Attribution 3.0 License Files PDF BelmonteRivas_2016.pdf 36.66 MB Close viewer /islandora/object/uuid:6d72899c-f13c-468e-b89b-67c3435cc5ab/datastream/OBJ/view