edu.ucar.opensky::articles:10461 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T14:36:05.849675 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7br8snw Observations of ozone production in a dissipating tropical convective cell during TC4 2010-08-11T00:00:00Z publication https://n2t.org/ark:/85065/d7br8snw https://doi.org/10.5194/acpd-10-18953-2010 Morris, G. author Thompson, M. author Pickering, K. author Chen, S. author Bucsela, E. author Kucera, Paul A. author UCAR/NCAR - Library publisher From 13 July-9 August 2007, 25 ozonesondes were launched from Las Tablas, Panama as part of the Tropical Composition, Cloud, and Climate Coupling (TC4) mission. On 5 August, a strong convective cell formed in the Gulf of Panama. World Wide Lightning Location Network (WWLLN) data indicated 563 flashes (09:00-17:00 UTC) in the Gulf. NO₂ data from the Ozone Monitoring Instrument (OMI) show enhancements, suggesting lightning production of NO&#x2093. At 15:05 UTC, an ozonesonde ascended into the southern edge of the now dissipating convective cell as it moved west across the Azuero Peninsula. The balloon oscillated from 2.5-5.1 km five times (15:12-17:00 UTC), providing a unique examination of ozone (O₃) photochemistry on the edge of a convective cell. Ozone increased at a rate of ~1.6-4.6 ppbv/hr between the first and last ascent, resulting cell wide in an increase of ~(2.1-2.5)×10⁶ moles of O₃. This estimate agrees to within a factor of two of our estimates of photochemical lightning O₃ production from the WWLLN flashes, from the radar-inferred lightning flash data, and from the OMI NO2 data (~1.2, ~1.0, and~1.7×106 moles respectively), though all estimates have large uncertainties. Examination of DC-8 in situ and lidar O₃ data gathered around the Gulf that day suggests 70-97% of the O₃ change occurred in 2.5-5.1 km layer. A photochemical box model initialized with nearby TC4 aircraft trace gas data suggests these O₃ production rates are possible with our present understanding of photochemistry. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright Author(s) 2010. This work is distributed under the Creative Commons Attribution 3.0 License. None eng geoscientificInformation