Meteorological, atmospheric and climatic perturbations during major dust storms over Indo-Gangetic Basin

Elevated aerosol layers and their radiative impact over Kanpur during monsoon onset period

“…The TOA and surface cooling along with atmospheric warming during premonsoon season was previously modeled over this region. Large positive shortwave atmospheric warming (37–75 W m−2) associated with negative surface and TOA cooling was found by Kumar et al [] during dusty periods over Kanpur. The SW aerosol radiative forcing calculations performed over Delhi show large atmospheric warming (111–123 W m −2 ) during May–June periods of 2006 [ Pandithurai et al , ].…”

“…A clear relation of transported dust loading with increase in columnar AOD and decrease in columnar Angstrom exponent is suggested during premonsoon season over IGP [ Dey et al , ; Badarinath et al , ]. Consequently, significant aerosol radiative forcing is also found during dust‐dominated premonsoon periods over the IGP [ Chinnam et al , ; Kaskaoutis et al , ; Pandithurai et al , ; Sharma et al , ; Kumar et al , , and references therein]. Modeling studies over different sites in IGP reveal that transported dust loading can potentially warm the atmosphere by 35–75 W m −2 during dust events over Kanpur [ Chinnam et al , ; Kumar et al , ], 111–123 W m −2 during May–June 2006 over Delhi [ Pandithurai et al , ], and between 40 and 80 W m −2 during April–June 2010 over Patiala [ Sharma et al , ].…”

“…Consequently, significant aerosol radiative forcing is also found during dust‐dominated premonsoon periods over the IGP [ Chinnam et al , ; Kaskaoutis et al , ; Pandithurai et al , ; Sharma et al , ; Kumar et al , , and references therein]. Modeling studies over different sites in IGP reveal that transported dust loading can potentially warm the atmosphere by 35–75 W m −2 during dust events over Kanpur [ Chinnam et al , ; Kumar et al , ], 111–123 W m −2 during May–June 2006 over Delhi [ Pandithurai et al , ], and between 40 and 80 W m −2 during April–June 2010 over Patiala [ Sharma et al , ]. Kaskaoutis et al [] reported a significant increase in elevated aerosol layer, aerosol radiative forcing, and heating rates over Kanpur during premonsoonal severe aerosol loading cases (2001–2010).…”

The Role of the Intertropical Discontinuity Region and the Heat Low in Dust Emission and Transport Over the Thar Desert, India: A Premonsoon Case Study

“…The NPP/VIIRS true-color imagery detects thick dust plumes over the Thar desert, started emitting on 12 June 2018, which initially moved to north and then shifted to east along the main axis of the Ganges valley ( Figure 2). This mechanism for the long-range transport of dust and the shape of the dust-plume propagation are characteristics for typical premonsoon dust storms originated from the Thar desert (Kumar et al, 2015) and will be analyzed in the following sections. reached 4 on some pixels over the Thar desert and IGP (Figure 3), thus approaching the upper limit (5.0) for the MODIS retrievals.…”

Urban particle size distributions during two contrasting dust events originating from Taklimakan and Gobi Deserts

“…The chemical composition of dust during DS1 and DS2 was not analyzed in this study because of current absence of chemical composition measurement in our sampling site. Additionally, some researchers examined the modifications in physical (particle size distributions) and the optical aerosol properties (spectral AOD, alpha and SSA) and radiative forcing during dust periods over northern India based on satellite (MODIS or CALIPSO) and AERONET (Aerosol Robotic Network) data (Kaskaoutis et al, 2012(Kaskaoutis et al, , 2013Prasad and Singh, 2007;Kumar et al, 2015). They results indicated the mean AOD increased from 0.4 to 0.5 to more than 0.6e0.7 throughout Indo-Gangetic (IG) plains (>0.8e0.9 on the western region) as a result of dust events originating from western arid and desert regions of Africa, Arabia Thar Desert.…”