Characterizing mega-city pollution with TES O3 and CO measurements
Item
Title (Dublin Core)
Characterizing mega-city pollution with TES O3 and CO measurements
Description (Dublin Core)
Concurrent tropospheric O<sub>3</sub> 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 O<sub>3</sub>, CO, and NO<sub>x</sub> enhancements in the in situ observations. We examined O<sub>3</sub>, 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 O<sub>3</sub> 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 O<sub>3</sub> and CO data are consistent with the aircraft observations on a daily mean basis (50–60 ppbv and 100–130 ppbv for O<sub>3</sub> and CO respectively). The O<sub>3</sub>-CO correlation coefficients and enhancement ratios (ΔO<sub>3</sub>/ΔCO) derived from TES data are in good agreements with those derived from the aircraft observations and GEOS-Chem model results (<i>r</i> : 0.5–0.9; ΔO<sub>3</sub>/ΔCO: 0.3–0.4), reflecting significant springtime photochemical production over MCMA and the surrounding region.
Creator (Dublin Core)
Shim, C.
Li, Q.
Luo, M.
Kulawik, S.
Worden, H.
Worden, J.
Eldering, A.
Diskin, G.
Sachse, G.
Weinheimer, A.
Knapp, D.
Montzca, D.
Campos, T.
Date (Dublin Core)
2018-08-09
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acpd-7-15189-2007
https://acp.copernicus.org/preprints/acpd-2007-0377/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
