Investigation of long–term trends and major sources of atmospheric HCHO over India

Experimental and theoretical study of Criegee intermediate (CH2OO) reactions with n-butyraldehyde and isobutyraldehyde: kinetics, implications and atmospheric fate

“…89 HCHO has adverse health effects at higher concentration from direct exposure, and due to its catalytic effects in the formation of atmospheric sulphate, which is a key component of particulate matter (PM). 90,91 HCOOH is an organic acid present in the atmosphere, which has an impact on the precipitation chemistry and acidity of the rain water. [92][93][94] It is also a greenhouse gas which affects the radiative balance of the atmosphere by the direct absorption of the solar radiation or by the scattering of radiation by generated secondary organic aerosol (SOA).…”

Trends in atmospheric pollution in the Third Pole: analyses of tropospheric NO2 for the period 2005–2020

“…The stubble burning during the wheat-rice rotation period is among the prominent reasons for a seasonal increase in NO2 in this region. 4,46,47 Major stubble burning occurs during January-May in Lahore, Faisalabad, Dera Ghazi Khan, Narowal and Hafizabad in Pakistan, Punjab, Haryana, Himachal Pradesh, Uttarakhand, Uttar Pradesh and Bihar in India, Nepal and Myanmar. 44,48 The fire count data also reveal an increase in number of fires, particularly during MAM when compared to other seasons (Figure S3).…”

“…Major stubble burning occurs during October-May in the IGP, YYRB, Nepal, Myanmar and East Asia. 4,44,46 However, large areas on the southern slope of the TP, including Nepal, Bhutan, Bangladesh, Northeast India, Myanmar, East Asia and some regions of the YYRB, are covered with broadleaf forest, and the re count frequency is high during December-June there, as illustrated in Fig. S2.…”

Spatial and temporal distribution of HCHO and its pollution sources based on satellite remote sensing: a case study of the Yangtze River Economic Belt

“…Kuttippurath et al believed that HCHO was of great harm to human body. They used remote sensing satellite to measure HCHO column concentration in India and found that in the lockdown period of COVID-19, the increase of HCHO concentration in atmosphere was related to pyrogen and biological sources besides anthropogenic sources [5]. Bai et al estimated the emission fluxes of isoprene and BVOCs in subtropical plantation based on HCHO data measured by satellites and the quantitative relationship between BVOCs-HCHO [6].…”