Influence of aerosol on clouds over the Indo-Gangetic Plain, India

Lal, D.; Patil, S. D.; Singh, H. N.; Ghude, Sachin D.; Tiwari, Suresh; Srivastava, Manoj

doi:10.1007/s00382-013-1775-z

Cited by 27 publications

(25 citation statements)

References 62 publications

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“…3). According to previous studies, enhanced pollution might be the contributor to the variation of cloud cover (Rosenfeld, 2000;Jacobson, 2001;Lal et al, 2013). Black carbon concentrations increase significantly due to industrialization and urbanization in recent years in China, especially in Shanghai (Qian et al, 2009;Huang et al, 2012).…”

Section: Relation Between Cloud and Aerosolmentioning

confidence: 94%

“…5). This enlarges cloud liquid water path and ascends non-precipitating water to high levels, and then results in reducing LCC formation (Lal et al, 2013). Meanwhile, cloud is also driven by atmospheric humidity and stability Koren et al, 2005).…”

Section: Relation Between Cloud and Aerosolmentioning

confidence: 99%

“…Meanwhile, cloud is also driven by atmospheric humidity and stability Koren et al, 2005). The ratio between condensation and evaporation of water vapor determines precipitation (Lal et al, 2013). Before 1998, vapor pressure keeps rising in Shanghai.…”

Section: Relation Between Cloud and Aerosolmentioning

confidence: 99%

See 2 more Smart Citations

Inter-Annual Variations of Cloud and Precipitation and their Possible Relationships with Surface Aerosols in Shanghai

Zhang

Duan

et al. 2015

Aerosol Air Qual. Res.

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Aerosol-cloud-precipitation interactions have attracted much more attention for decades, but there still remain many uncertainties in assessing global climate. Long-term ground-based measurements of aerosol, cloud and precipitation in Shanghai were used to examine their inter-annual variations and possible relationships. During 1990-2010, the yearlyaveraged total cloud cover (TCC) and low cloud cover (LCC) decrease on average by 0.58% and 2.49% per year. LCC correlates to surface aerosols (e.g., PM 10 ), with a correlation coefficient (R) of 0.67. Aerosol optical depth (AOD), as an indicator of columnar aerosol loading, shows a non-significant correlation with cloud cover. The yearly-aggregated heavy and extreme rain days and their rainfall amount increase gradually. The moderate rain day enhances but its annual rainfall amount declines year by year, while the light rain exhibits an opposite pattern to the moderate rain. These results imply that local aerosols maybe exert somewhat enforcing on low cloud and light rain through possible entrainment or updraft that can bring up surface particles into free troposphere, whereas its influence to total cloud and precipitation is negligible at a small scale. Future studies are needed to ensure whether local aerosols to directly affect low cloud, and to explore how surface aerosols to enter into higher atmospheric layers and impact cloud and precipitation at larger scales.

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Section: Relation Between Cloud and Aerosolmentioning

confidence: 94%

Section: Relation Between Cloud and Aerosolmentioning

confidence: 99%

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Inter-Annual Variations of Cloud and Precipitation and their Possible Relationships with Surface Aerosols in Shanghai

Zhang

Duan

et al. 2015

Aerosol Air Qual. Res.

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“…During the pre-monsoon and early-monsoon period, the region experiences high aerosol loading, which is of particular research interest due to large heterogeneity in aerosol characteristics and their impacts on radiative forcing and monsoon rainfall (Gautam et al, 2009(Gautam et al, , 2011Srivastava et al, 2011Srivastava et al, , 2012Kaskaoutis et al, 2013). Forest fires in Himalayan foothills (Vadrevu et al, 2012), agricultural burning of wheat crop residue in northwestern India (Kumar et al, 2011), urban and industrial fossilfuel combustion (Ram and Sarin, 2011), biomass and bio-fuels burning (Ram et al, 2012), along with dust plumes originating from Thar desert, southwest Asia and Arabia (Bhattacharjee et al, 2007;Pandithurai et al, 2008;Rashki et al, 2015) synthesize a thick brownish aerosol cloud covering entire northern India and southern Himalayan foothills with significant effects on clouds, monsoon and climate Lau and Kim, 2006;Lal et al, 2013;Das et al, 2014;Wonsick et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Aerosol chemical characterization and role of carbonaceous aerosol on radiative effect over Varanasi in central Indo-Gangetic Plain

Tiwari

Dumka

Kaskaoutis

et al. 2016

Atmospheric Environment

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“…CC BY 4.0 License. (Gautam et al, 2009;Gautam et al, 2010;Lau and Kim, 2010;Lal et al, 2013;Das et al, 2015a).…”

Section: Introductionunclassified

Large contrast in the vertical distribution of aerosol optical properties and radiative effects across the Indo-Gangetic Plain during SWAAMI-RAWEX campaign

Vaishya¹,

Kompalli²,

Jayachandran³

et al. 2018

Preprint

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Abstract. Measurements of the vertical profiles of the optical properties (namely the extinction&#8201;/&#8201;scattering and absorption coefficients; respectively &#963;ext&#8201;/&#8201;&#963;scat&#8201;/&#8201;&#963;abs) of aerosols have been made across the Indo-Gangetic Plain (IGP) using an instrumented aircraft operated from three base stations (Jodhpur (JDR) representing the semiarid western IGP; Varanasi (VNS) the central IGP characterized by significant anthropogenic activities; and the industrialised coastal location in the eastern end of the IGP (Bhubaneswar, BBR)), just prior to the onset of the Indian Summer monsoon. The vertical profiles depicted region-specific absorption characteristics, while the scattering characteristics remained fairly uniform across the region, leading to a west-east gradient in the vertical structure of single scattering albedo (SSA). Integrated from near ground to 3&#8201;km, the highest absorption coefficient and hence the lowest SSA occurred in the central IGP (Varanasi). Size distribution, inferred from the spectral variation of the scattering coefficient, showed a gradual shift from coarse particle dominance in the western IGP to strong accumulation dominance in the eastern coast with the central IGP coming in-between, arising from a change in the aerosol type from predominantly natural (dust and sea-salt) type in the western IGP to highly anthropogenic type (industrial emissions, fossil fuel and biomass combustion) in the eastern IGP; the central IGP exhibiting a mixture of both. Aerosol induced short-wave radiative forcing, estimated using altitude resolved SSA information, revealed significant atmospheric warming in the central IGP while a top-of-atmosphere cooling is seen, in general, in the IGP. Atmospheric heating rate profiles, estimated using altitude resolved SSA and column average SSA, revealed considerable underestimation in the latter case, emphasising the importance and necessity of having altitude resolved SSA information as against a single value for the entire column.

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Influence of aerosol on clouds over the Indo-Gangetic Plain, India

Cited by 27 publications

References 62 publications

Inter-Annual Variations of Cloud and Precipitation and their Possible Relationships with Surface Aerosols in Shanghai

Inter-Annual Variations of Cloud and Precipitation and their Possible Relationships with Surface Aerosols in Shanghai

Aerosol chemical characterization and role of carbonaceous aerosol on radiative effect over Varanasi in central Indo-Gangetic Plain

Large contrast in the vertical distribution of aerosol optical properties and radiative effects across the Indo-Gangetic Plain during SWAAMI-RAWEX campaign

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