Impact of tropical convection and ENSO variability in vertical distributions of CO and O3 over an urban site of India

• Published in: Climate dynamics 2017-07, Vol.49 (1-2), p.449-469
• Main Authors: Sahu, L. K., Sheel, Varun, Kajino, M., Deushi, M., Gunthe, Sachin S., Sinha, P. R., Yadav, Ravi, Pal, Devendra, Nedelec, P., Thouret, Valérie, Smit, Herman G.
• Format: Article
• Language: English
• Subjects: Aircraft; Aircraft industry; Carbon; Carbon monoxide; Carbon monoxide measurements; CCM2 protein; Climatology; Computer simulation; Convection; Convective activity; Convective transport; Cyclones; Dynamics; Earth and Environmental Science; Earth Sciences; El Nino; El Nino phenomena; Emission measurements; Geophysics/Geodesy; Hurricanes; La Nina; Long wave radiation; Measurement; Monsoons; Oceanography; Outgoing long-wave radiation; Ozone; Phases; Profiles; Radiation; Seasons; Shear; Shears; Southern Oscillation; Transport; Transportation models; Tropical convection; Tropical cyclones; Troposphere; Upper troposphere; Urban areas; Variability; Vertical profiles; Water vapor; Water vapour; Wind; Wind shear; Winds; Winter
• ISSN: 0930-7575; 1432-0894
• DOI: 10.1007/s00382-016-3353-7

This study is based on the analysis of the measurement of ozone and water vapor by airbus in-service aircraft (MOZAIC) data of vertical ozone (O 3 ) and carbon monoxide (CO) over Hyderabad during November 2005–March 2009. Measurements in the upper troposphere show highest values of O 3 (53–75 ppbv) and CO (80–110 ppbv) during the pre-monsoon and post-monsoon seasons, respectively. The episodes of strong wind shears (>20 ms −1 ) were frequent during the monsoon/post-monsoon months, while weak shear conditions (