Publications by authors named "Nader K Abuhassan"
Vertical column density (VCD) of nitrogen dioxide (NO2) was measured using Pandora spectrometers at six sites on the Korean Peninsula during the Megacity Air Pollution Studies-Seoul (MAPS-Seoul) campaign from May to June 2015. To estimate the tropospheric NO VCD, the stratospheric NO VCD from the Ozone Monitoring Instrument (OMI) was subtracted from the total NO VCD from Pandora. European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis wind data was used to analyze variations in tropospheric NO VCD caused by wind patterns at each site.
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- * Results show strong agreement between satellite and ground measurements, but discrepancies arise under certain conditions, with variances up to ±65% for nitrogen dioxide and ±23% for ozone, particularly affected by cloud cover and aerosol levels.
- * The findings suggest improvements are needed in satellite retrieval algorithms and quality control processes to account for the influences of atmospheric conditions on measurements.