31-01-2009, 12:18 AM
High air pollution in terms of particulate matter, SO2, NO2 etc has been observed from the rapidly urbanized cities. This is the most issuing problem for the environmental planners and scientists. The conventional approach of air quality status planning is generally achieved within four phases, namely monitoring, modeling, development and finally execution. Monitoring is achieved by integrative sampling; grab sampling, and passive sampling. But previous studies show that conventional approach to assess the pollution level are not efficient. Since monitoring plays the major role, more accuracy is needed. It has been observed that air monitoring can be improved by remote sensing technique. Meteorological parameters may be assessed by Radar Wind Profile, Dopler Sodar and RASS.Gaseous monitoring may be improved by LIDAR, DIAL, DOAS etc. The records of these air monitoring may be geographically recombined by the GIS technique. Conclusions has been drawn out from the present work that the air monitoring may be improved by the use of instrument based on remote sensing technique. Meteorological parameters may be assessed by the Radar Wind Profiler, Dopler Sodar and RASS (Radio Acoustic Sounding System). Particulate monitoring may be assessed by the LAPS (Lidar Atmospheric Profile Sensor) instrument. Gaseous monitoring may be improved by the use of various available instruments such as LIDAR, DIAL, DOAS, FTIR, OPUV and TILDAS. The records of these air monitoring may be geographically recombined by the GIS techniques. For efficient, cost effective and continuous improvements of air quality status GIS based modelling may be applied. The detail of these methodologies and critical review of remote sensing air monitoring instruments will be discussed in the full text of paper. Finally suitable recommendations have been proposed for achieving efficient and reliable air quality status planning.
