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Content Provider | IEEE Xplore Digital Library |
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Author | Wallace, J. Kanaroglou, P. |
Copyright Year | 2008 |
Description | Author affiliation: Centre for Spatial Anal., McMaster Univ., Hamilton, ON (Wallace, J.; Kanaroglou, P.) |
Abstract | Data from the Ozone Monitoring Instrument (OMI) are used to investigate the weekday and seasonal variations in nitrogen dioxide $(NO_{2})$ densities observed over southern Ontario, Canada. Total column and tropospheric density data gridded at 1deg times 1deg follow the weekday pattern observed by fixed monitoring stations on the ground, with decreased concentration on the weekends and highest values during mid-week. While seasonal patterns from tropospheric data are similar to ground observations, the total column vertical density pattern shows a summer $NO_{2}$ peak. Additional higher resolution tropospheric data, gridded at 0.25deg times 0.25deg for a smaller area encompassing the city of Hamilton, Ontario, show weekly and seasonal patterns which conform closely to those observed on the ground. While univariate linear regression indicate that OMI tropospheric $NO_{2}$ explain only 20% of ground observations $(R^{2}$ = 0.20), multivariate analyses with variables representing local meteorology, seasons and other pollutants, yield an $R^{2}$ value of 0.81. |
File Size | 305751 |
File Format | |
ISBN | 9781424428076 |
DOI | 10.1109/IGARSS.2008.4779512 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2008-07-07 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Monitoring Instruments Cities and towns Air pollution Transportation Satellites Spatial resolution Geoscience Nitrogen Environmentally friendly manufacturing techniques temperature inversion OMI NO2 weekend-effect |
Content Type | Text |
Resource Type | Article |
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