Characteristics and emission budget of carbonaceous species from
                        post-harvest agricultural-waste burning in source region of the
                        Indo-Gangetic Plain

Rajput, Prashant; Sarin, M.M.; Sharma, Deepti; Singh, Darshan

doi:10.3402/tellusb.v66.21026

Cited by 139 publications

(80 citation statements)

References 33 publications

(42 reference statements)

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“…Second, we treated all the water-insoluble OC from the ice-core measurements as lightabsorbing brown carbon in the forcing estimation, which also likely results in an overestimation of OC forcing if a significant fraction of OC is non-absorbing. However, the watersoluble part, accounting for about half of OC observed in the Manora peak and northwestern India (Ram et al, 2010;Rajput et al, 2014), can also contribute to some absorption of UV and visible light (Chen and Bond, 2010;Beine et al, 2011). Thus, the absorption by water-soluble OC that was not included in the forcing estimate may compensate for the high bias to some extent.…”

Section: Radiative Forcing Induced By Carbonaceous Aerosols In Tibetamentioning

confidence: 94%

Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing

Wang

Cao

et al. 2015

Atmos. Chem. Phys.

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Abstract. High temporal resolution measurements of black carbon (BC) and organic carbon (OC) covering the time period of in an ice core over the southeastern Tibetan Plateau show a distinct seasonal dependence of BC and OC with higher respective concentrations but a lower OC / BC ratio in the non-monsoon season than during the summer monsoon. We use a global aerosol-climate model, in which BC emitted from different source regions can be explicitly tracked, to quantify BC source-receptor relationships between four Asian source regions and the southeastern Tibetan Plateau as a receptor. The model results show that South Asia has the largest contribution to the presentday (1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005) mean BC deposition at the ice-core drilling site during the non-monsoon season (October to May) (81 %) and all year round (74 %), followed by East Asia (14 % to the non-monsoon mean and 21 % to the annual mean). The icecore record also indicates stable and relatively low BC and OC deposition fluxes from the late 1950s to 1980, followed by an overall increase to recent years. This trend is consistent with the BC and OC emission inventories and the fuel consumption of South Asia (as the primary contributor to annual mean BC deposition). Moreover, the increasing trend of the OC / BC ratio since the early 1990s indicates a growing contribution of coal combustion and/or biomass burning to the emissions. The estimated radiative forcing induced by BC and OC impurities in snow has increased since 1980, suggesting an increasing potential influence of carbonaceous aerosols on the Tibetan glacier melting and the availability of water resources in the surrounding regions. Our study indicates that more attention to OC is merited because of its non-negligible light absorption and the recent rapid increases evident in the ice-core record.

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Section: Radiative Forcing Induced By Carbonaceous Aerosols In Tibetamentioning

confidence: 94%

Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing

Wang

Cao

et al. 2015

Atmos. Chem. Phys.

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“…Biomass fuel with low burning efficiency led to the increased emission of carbonaceous aerosol . Also, biomass fuels with high moisture when burns are responsible for higher contribution of OC to the particulates (Rajput et al, 2014). EF of OC from FW (av.…”

Section: Organic Carbon and Elemental Carbon (Oc And Ec)mentioning

confidence: 99%

Residential Biomass Burning Emissions over Northwestern Himalayan Region of India: Chemical Characterization and Budget Estimation

Saxena

Sharma

Tomar

et al. 2016

Aerosol Air Qual. Res.

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In the present study, we have determined the emission factors (EF) and estimated the emission of particulate matter (PM), organic carbon (OC), elemental carbon (EC), polycyclic aromatic hydrocarbons (PAHs), water soluble inorganic constituents (WSIC) and trace gases such as SO 2 , NO and NO 2 from the combustion of biomass fuels (FW: fuel wood and DC: dung cake) used in rural sectors for cooking over Himachal Pradesh (HP), representing the Northwestern Himalayan region of India. The average EFs of PM estimated from FW and DC were 3.44 ± 2.38 and 11.43 ± 1.13 g kg -1 , respectively. OC and EC emission ranged from 0.106 to 3.55 g kg -1 and 0.07 to 0.90 g kg -1 , respectively for variety of biomass fuels. Total emission of PAHs from DC (44.37 mg kg ) noted in this study was almost similar. Similarly, the average EFs of NO x from FW and DC were 0.59 ± 0.49 g kg -1 and 0.34 ± 0.18 g kg -1 , respectively. FWs have comparatively higher SO 2 emission (average: 0.43 ± 0.38 g kg -1 ) than from DC (average: 0.23 ± 0.15 g kg -1 ). Among anionic inorganic constituents emitted from FW, maximum EF was noted for Cl -(0.30 ± 0.26 g kg -1 ). Similarly for cations, highest EF was noted of K + (0.20 ± 0.09 g kg -1 ). Ca 2+ and Na + were the major cationic species identified in plumes of DC burning. Utilizing total annual consumption of biomass fuels and EFs of particulates and trace gases determined in the present study over HP and in the past study (Saud et al., 2011 over Uttarakhand, budget estimates of PM, OC, EC, TC, PAHs, SO 2 and NO x have been determined over the Northwestern Himalayan region. Total annual emission estimated over Northwestern Himalayan region are as:

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“…Therefore, the estimates of K + in aerosol samples were suitably corrected using correction factor for sea salt sodium ions (Na + ) (Rajput et al, 2014). Regression fits between OC, EC, BC, LAOC, Char-EC, and Soot-EC with nssK + ( ).…”

Section: Appraisal Of Biomass Combustion From Non-sea Saltmentioning

confidence: 99%

Biomass Combustion a Dominant Source of Carbonaceous Aerosols in the Ambient Environment of Western Himalayas

Kumar

Attri

2016

Aerosol Air Qual. Res.

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Use of biomass combustion as primary energy source emit substantial amounts of carbonaceous aerosols (CA) in the Himalayan environment. Any understanding regarding the impact of CA on human health and climate requires a reliable estimation of compositional variability of CA associated carbon forms: Elemental carbon (EC), Organic carbon (OC), and Light absorbing organic carbon (LAOC). This investigation spanning over 14 months was undertaken in the rural part of the Western Himalayas to estimate temporal variability in the ambient aerosol load (PM 10 , PM 2.5 ), CA associated carbon forms. All CA associated carbon forms were part of PM 2.5 size fraction, their significantly high concentrations in winter corresponded with the high biomass combustion. Source apportionment of CA done on the basis of Char-EC/Soot-EC estimates showed that > 90% of the EC was Char-EC contributed by biomass and coal combustion in winter. Estimates of K + (tracer for biomass combustion) showed a strong association with CA associated carbon forms. The estimated values of CA associated carbon forms during winter matched with the reported values of emission factors for biomass burning. Both the mass and composition of ambient aerosol were predominantly contributed by biomass combustion in the region.

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Characteristics and emission budget of carbonaceous species from post-harvest agricultural-waste burning in source region of the Indo-Gangetic Plain

Cited by 139 publications

References 33 publications

Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing

Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing

Residential Biomass Burning Emissions over Northwestern Himalayan Region of India: Chemical Characterization and Budget Estimation

Biomass Combustion a Dominant Source of Carbonaceous Aerosols in the Ambient Environment of Western Himalayas

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