Next Article in Journal
Previous Article in Journal
Sensors 2009, 9(6), 4380-4389; doi:10.3390/s90604380
Article

Modeling of Aerosol Vertical Profiles Using GIS and Remote Sensing

1
, 2,*  and 3
Received: 15 April 2009; in revised form: 28 May 2009 / Accepted: 2 June 2009 / Published: 4 June 2009
(This article belongs to the Section Remote Sensors)
View Full-Text   |   Download PDF [311 KB, uploaded 21 June 2014]   |   Browse Figures
Abstract: The use of Geographic Information Systems (GIS) and Remote Sensing (RS) by climatologists, environmentalists and urban planners for three dimensional modeling and visualization of the landscape is well established. However no previous study has implemented these techniques for 3D modeling of atmospheric aerosols because air quality data is traditionally measured at ground points, or from satellite images, with no vertical dimension. This study presents a prototype for modeling and visualizing aerosol vertical profiles over a 3D urban landscape in Hong Kong. The method uses a newly developed technique for the derivation of aerosol vertical profiles from AERONET sunphotometer measurements and surface visibility data, and links these to a 3D urban model. This permits automated modeling and visualization of aerosol concentrations at different atmospheric levels over the urban landscape in near-real time. Since the GIS platform permits presentation of the aerosol vertical distribution in 3D, it can be related to the built environment of the city. Examples are given of the applications of the model, including diagnosis of the relative contribution of vehicle emissions to pollution levels in the city, based on increased near-surface concentrations around weekday rush-hour times. The ability to model changes in air quality and visibility from ground level to the top of tall buildings is also demonstrated, and this has implications for energy use and environmental policies for the tall mega-cities of the future.
Keywords: aerosol optical thickness; extinction coefficient; GIS; modeling; visualization aerosol optical thickness; extinction coefficient; GIS; modeling; visualization
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Wong, M.S.; Nichol, J.E.; Lee, K.H. Modeling of Aerosol Vertical Profiles Using GIS and Remote Sensing. Sensors 2009, 9, 4380-4389.

AMA Style

Wong MS, Nichol JE, Lee KH. Modeling of Aerosol Vertical Profiles Using GIS and Remote Sensing. Sensors. 2009; 9(6):4380-4389.

Chicago/Turabian Style

Wong, Man Sing; Nichol, Janet E.; Lee, Kwon Ho. 2009. "Modeling of Aerosol Vertical Profiles Using GIS and Remote Sensing." Sensors 9, no. 6: 4380-4389.



Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert