A study of tropospheric NO2 variability over Pakistan using OMI data
نویسندگان
چکیده
منابع مشابه
Evaluation of a regional air quality forecast model for tropospheric NO2 columns using the OMI/Aura satellite tropospheric NO2 product
Results from a regional air quality forecast model, AIRPACT-3, are compared to OMI tropospheric NO2 integrated column densities for an 18 month period over the Pacific Northwest. AIRPACT column densities are well correlated (r = 0.75) to cloud-free (<35%) retrievals of tropospheric NO2 for monthly averages without wildfires, but are poorly correlated (r = 0.21) with significant model overpredic...
متن کاملNear-real time retrieval of tropospheric NO2 from OMI
We present a new algorithm for the near-real time retrieval – within 3 h of the actual satellite measurement – of tropospheric NO2 columns from the Ozone Monitoring Instrument (OMI). The retrieval is based on the combined retrieval-assimilation-modelling approach developed at KNMI for off-line tropospheric NO2 from the GOME and SCIAMACHY satellite instruments. We have adapted the off-line syste...
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D. Schaub, K. F. Boersma, J. Keller, D. Folini, D. Brunner, B. Buchmann, H. Berresheim, and J. Staehelin Empa, Swiss Federal Laboratories for Materials Testing and Research, Ueberlandstrasse 129, CH-8600 Duebendorf, Switzerland Division of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, USA Paul Scherrer Institute (PSI), CH-5232 Villigen PSI, Switzerland German N...
متن کاملData assimilation of OMI NO2 observations for improving air quality forecast over Europe
This paper concerns the improvements of NO2 forecast due to satellite data assimilation. The Ozone Monitoring Instrument (OMI) aboard NASA Aura satellite provides observations of NO2 columns for air quality study. These satellite observations are assimilated, with the optimal-interpolation method, in an air quality model from Polyphemus, in order to improve NO2 forecasts in Europe. Good consist...
متن کاملTropospheric NO2 concentrations over West Africa are influenced by climate zone and soil moisture variability
The annual cycles of soil moisture and NO2 have been analysed across the climate zones of West Africa using two satellite data sets (OMI on AURA and ASCAT on MetOp-A). Exploring the sources and sinks for NO2 it is clear that the densely populated urban cities including Lagos and Abuja had the highest mean NO2 concentrations (>1.8 × 10 15 molecules cm -2 ) indicative of the anthropogenic urban e...
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ژورنال
عنوان ژورنال: Atmospheric Pollution Research
سال: 2014
ISSN: 1309-1042
DOI: 10.5094/apr.2014.080