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| Titel |
Estimation of NO2 emissions from Lahore and Rawalpindi / Islamabad using Car MAX-DOAS observations and comparison with OMI satellite data |
| VerfasserIn |
Maria Razi, Muhammad Fahim Khokhar, Zeeshan Javed, Noor Ahmad, Thomas Wagner |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250105197
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| Publikation (Nr.) |
 EGU/EGU2015-4652.pdf |
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| Zusammenfassung |
| We present results of ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements performed around the cities of Lahore and Rawalpindi / Islamabad, Pakistan and also between the cities along National Highway, N5. From the car-MAX-DOAS measurements, the tropospheric vertical column density (VCD) of NO2 is retrieved based on the so called geometric approximation. Based on observations along large circles around the cities and wind data we estimate the NO2 emissions from the cities of Lahore and Rawalpindi / Islamabad. We also compare the spatial distributions of the tropospheric NO2 VCDs observed by car MAX-DOAS with collocated results from the satellite based Ozone Monitoring Instrument (OMI). We discuss the influence of the observed spatial gradients on the comparison between both data sets. |
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