edu.ucar.opensky::articles:6202 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T15:30:35.974316 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d71r6qpz Characterizing mega-city pollution with TES O₃ and CO measurement 2007-10-25T00:00:00Z publication https://n2t.org/ark:/85065/d71r6qpz https://doi.org/10.5194/acpd-7-15189-2007 Shim, C. author Li, Q. author Luo, M. author Kulawik, S. author Worden, H. author Worden, J. author Eldering, A. author Diskin, G. author Sachse, G. author Weinheimer, Andrew author Knapp, David author Montzka, Denise D. author Campos, Teresa author UCAR/NCAR - Library publisher Concurrent tropospheric O₃ and CO vertical profiles from the Tropospheric Emission Spectrometer (TES) during the MILAGRO/INTEX-B aircraft campaigns over the Mexico City Metropolitan Area (MCMA) allow us to characterize mega-city pollution. Outflow from the MCMA occurred predominantly at 600-800 hPa, evident in O₃, CO, and NOx enhancements in the in situ observations. We examined O₃, CO, and their correlation at 600-800 hPa from TES retrievals, aircraft measurements, and GEOS-Chem model results over the aircraft coverage (within a radius of ~700 km around MCMA). The enhancements in O₃ and CO seen in the in situ measurements are not apparent in TES data, due to the lack of TES coverage during several strong pollution events. However, TES O₃ and CO data are consistent with the aircraft observations on a daily mean basis (50-60 ppbv and 100-130 ppbv for O₃ and CO respectively). The O₃-CO correlation coefficients and enhancement ratios (ΔO3/ΔCO) derived from TES data are in good agreements with those derived from the aircraft observations and GEOS-Chem model results (r : 0.5-0.9; ΔO3/ΔCO: 0.3-0.4), reflecting significant springtime photochemical production over MCMA and the surrounding region. 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) 2007 None eng geoscientificInformation