Aerosol Parameters During Winter and Summer Seasons and Meteorological Implications

Pradeep Kumar,Arti Choudhary,Anuradha Shukla,Abhay Kumar Singh,Rajendra Prasad,D Liu,Y Wang,F Moshary,B Gross,Y Wu

doi:10.1051/epjconf/202023702003

Abstract

The MICROTOPS II aerosol optical depth (AOD) and Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua AOD and angstrom exponent (AE) were collected during December 2016 to May 2017. Higher AOD values were recorded during winter (December - February) and summer (March - May) Months. These values were observed by MICROTOPS II (0.35 - 1.279) and MODIS (0.222 - 1.904) during winter season. During summer AOD values were recorded by MICROTOPS II (0.272 – 1.744) and MODIS (0.227 – 1.33). Whereas MODIS AE (0.218 – 1.799) values were found high during winter season indicates about the dominance of fine particulates. During summer months MODIS AE (.001 – 1.648) values are indicating about the mixing of the aerosol particles. The relative humidity values during December and January months were found to be high, while its values were found decreasing during late February due to transition phase. Relative humidity values were recorded low during summer (36 – 86%) months in compare to the winter (50 - 100%) months.

Highlights

The continuously increasing air pollutant concentrations are an environmental issue within the cities, while it has regional and global environmental effects [1, 2]
The meteorological parameter data was collected from the India Meteorological Department (IMD) established center at Banaras Hindu University (BHU), Varanasi
During winter months aerosol optical depth (AOD) values were in the ranges (0.35 - 1.279) collected by MICROTOPS II

Summary

INTRODUCTION

The continuously increasing air pollutant concentrations are an environmental issue within the cities, while it has regional and global environmental effects [1, 2]. The rapidly increasing population, vehicles, industrial developments and the resulting anthropogenic activities are the major concerns for the air, water and land pollution in most of the developing Asian countries [1,2,3,4,5,6]. Indo Gangetic Plain (IGP) in India, experiences a very high aerosol loading with a strong intra-seasonal to interannual variability [10]. IGP region traversed by the Ganga river and its tributaries is one of the largest, densely populated, industrialized and developing region of the world where aerosol affect the Indian monsoon and the global climate system [11]. All the anthropogenic activity, including various festivals, affects the environment especially in India

Study area and sampling

AOD and AE for the atmospheric aerosols during winter season

AOD and AE for the atmospheric aerosols during summer season

Meteorological implication over the site