Application of satellite data for monitoring of particulate matter in New Delhi, India | |
| Author | Sohini, Bonthala |
| Call Number | AIT RSPR no.JNTUK-16-01 |
| Subject(s) | Pollution--Remote sensing Air--Pollution--India |
| Note | A research submitted in partial fulfillment of the requirements for degree of Master of Engineering in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Series Statement | |
| Abstract | Particulate matter (PM) air pollution raises increasing concerns worldwide due to its adverse health effects and various influences on the environment and Earth’s climate system. Compared to the traditional ground-based PM observations, satellite monitoring has considerable potential in providing with large spatial coverage of air quality with low costs. The principal objective of this study was to assess ground-level PM pollution in New Delhi using satellite aerosol optical depth (AOD), with consideration of meteorological conditions. HourlyPM10(PM with aerodynamic diameter less than10 μm) data available for theyear (2014) was provided by Delhi Pollution Control Board (DPCC). Satellite Moderate Resolution Imaging Spectroradiometer (MODIS) AODs available two times per a day were extracted from their respective Level-2 aerosol products for the same data period. The variations of 24h PM10 concentrations in four respective seasons in India (winter, Pre-Monsoon, Monsoon, Post-Monsoon) for four sites shows very high PM10 concentrations during Post-Monsoon and winter seasons. The PM10 concentrations largely exceeded the National Ambient Air Quality Standards(NAAQs).The satellite AODs were validated using the ground-based Aerosol Robotic Network (AERONET) AOD at Mandir Marg New Delhi site for 2009 and showed coefficient of determination(R) of 0.74 for Terra and Aqua, whereas R=0.78 for Terra and R=0.69 for Aqua and for Punjabi Bagh site it showed coefficient of determination (R) of 0.67 for Terra and Aqua, whereas R=0.63for Terra and R=0.65 for Aqua. The validated AODs were firstly compared with PM10 concentrations without considering meteorological parameters for Mandir marg and Punjabi Bagh sites. Mandir Marg showed better relations when compared with Punjabi Bagh site.For 10× 10 km 2 grid, while R values for AOD-PM10 relationships has R=0.54 for Mandir Marg and R= 0.53 for Punjabi Bagh, it is observed that it has poor relationship as this relationship is without considering meteorological parameters. Overall, the results suggested that Aqua AOD (R=0.66) had slightly better correlations with PM10 concentrations than Terra AOD (R=0.45). With consideration of meteorological parameters, certain variations in R values of AOD-PM were shown after introducing surface wind speed (WS) for New Delhi site, where the R values of Mandir Marg and Punjabi Bagh for Terra are 0.57 & 0.50, Aqua are 0.57 & 0.58 and for Terra & Aqua are 0.55 & 0.58. Incorporation of ambient relative humidity (RH) highly improvedR values for both MODIS AOD-PM10for Mandir Marg and Punjabi Bagh as it shows that R values for Terra are 0.64 7 0.59, Aqua are 0.68& 0.54 and for Terra & Aqua are 0.64 & 0.51. Overall, the finding suggested that the regression relationship could be improved by incorporating more meteorological parameters(cloud cover, relative humidity, and wind speed)for AOD-PM relations. Further investigations should be extended to other regions in New Delhi and other cities in India using more PM data. Other covariant factors (e.g., local emission sources and local land uses) can be considered for better understanding of PM properties and AOD-PM relationships. |
| Year | 2016 |
| Corresponding Series Added Entry | |
| Type | Research Study Project Report (RSPR) |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Previous Degree Jawaharlal Nehru Technological University Kainada, India (JNTUK) |
| Chairperson(s) | Nguyen Thi Kim Oanh |
| Examination Committee(s) | Shipin, Oleg;Agustian, Didin Permadi;Verma, Ram Lal |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship |
| Degree | Research report (M. Eng.) - Asian Institute of Technology, 2016 |