Publications

Wei, G; Li, L; Chen, LJ; Zha, Y (2022). Impact of Fine-Mode Fraction on the Relationship Between MODIS AOD and Ground-Based Particulate Matter. JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING, 50(3), 425-433.

Abstract
Estimating the mass concentration of near-surface atmospheric particulate matter by using satellite-derived aerosol optical depth (AOD) is a commonly used technique nowadays. In this study, moderate-resolution imaging spectroradiometer (MODIS) AOD, fine-mode fraction (FMF) and near-surface atmospheric particulate matter data (PM2.5 and PM10) from March 2014 to February 2019 in major urban areas of Nanjing, China, were obtained. The differences between impact of FMF on the relationship between AOD and PM2.5/PM10 were discussed under three cases, respectively: (1) classification due to different FMF scores; (2) different weather conditions (fine and haze weather); and (3) different seasons. The results show that FMF had different effects on the estimation of PM2.5 and PM10 in different seasons. PM2.5 estimation was more favorable in summer and winter when FMF is relatively high, and r (correlation coefficient) reached 0.74 and 0.65. In contrast, PM10 estimation was more favorable in spring and autumn when FMF is relatively low, and r reached 0.65 and 0.63. FMF can be used as an indicator of the pros and cons of PM2.5 and PM10 estimation based on AOD.

DOI:
10.1007/s12524-021-01461-z

ISSN:
0974-3006