20130527

Author : M. Vrekoussis, A. Richter, A. Hilboll, J. P. Burrows, E. Gerasopoulos, J. Lelieveld, L. Barrie, C. Zerefos, and N. Mihalopoulos
Year :  2013
Title : Economic crisis detected from space: Air quality observations
Journal : GEOPHYSICAL RESEARCH LETTERS
Comment :  NOx emissions are related to road traffic; higher NOx emissions at 10 am than at mid-afternoon related to the morning rush hour and the stronger photochemical NO2 loss during midday. the annual reduction in NO2 and SO2 concentrations has been related to the most recent period prior the economic crisis. the declining local concentrations of NO, CO, and SO2 are associated with an increase in ozone due to reduced titration by NO.

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