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- W4200448249 abstract "Abstract Delhi metropolitan area suffers from extreme haze during the post‐monsoon and winter season, impacting climate, public health, and economy. We used a high‐resolution time‐of‐flight aerosol mass spectrometer (HR‐ToF‐AMS) and aethalometer at two urban locations in Delhi to capture non‐refractory PM 2.5 (NR‐PM 2.5 ) and black carbon (BC) during the post‐monsoon and winter season of 2019–2020. Four haze periods with high composition based‐PM 2.5 (C‐PM 2.5 = NR‐PM 2.5 + BC) concentration and distinct chemical composition were identified, during all of which organics dominated but with varying contribution (∼[50%–70%] of C‐PM 2.5 ). Biomass burning organic aerosol (BBOA) was dominant in all periods (∼[31%–45%] of OA), but the majority of it was highly aged ∼(45%–50%) with high O/C (0.71 and 0.46 at the two sites), formed most likely through rapid dark oxidation of freshly emitted and partially oxidized BBOA. High polycyclic aromatic hydrocarbons (PAH) signals in the fresh BBOA mass spectra suggest incomplete combustion activities such as open biomass burning emissions as major source. During an agricultural burning event in north‐western India, we estimated that ∼(44%–53%) of total C‐PM 2.5 (combined contribution of aged BBOA and oxygenated OA) measured in Delhi was influenced by long‐range transported biomass burning emissions. During winter, secondary inorganics constituted a significant fraction apart from organics ∼(48%–55%), mainly in the form of ammonium nitrate (NH 4 NO 3 ; up to ∼[19%–25%] of C‐PM 2.5 ) and ammonium sulfate (NH 4 SO 4 ; up to ∼[27%–38%]). Enhanced formation of NH 4 NO 3 and related‐secondary organic aerosol (SOA) were linked to nighttime oxidation of BBOA, while NH 4 SO 4 and related‐SOA were linked to heterogeneous aqueous phase oxidation under high RH conditions (>90%)." @default.
- W4200448249 created "2021-12-31" @default.
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- W4200448249 date "2021-12-30" @default.
- W4200448249 modified "2023-10-18" @default.
- W4200448249 title "Effect of Biomass Burning on PM <sub>2.5</sub> Composition and Secondary Aerosol Formation During Post‐Monsoon and Winter Haze Episodes in Delhi" @default.
- W4200448249 cites W1237198631 @default.
- W4200448249 cites W1485504984 @default.
- W4200448249 cites W1564293002 @default.
- W4200448249 cites W1634198811 @default.
- W4200448249 cites W1819362720 @default.
- W4200448249 cites W1929937058 @default.
- W4200448249 cites W1960909689 @default.
- W4200448249 cites W1969059285 @default.
- W4200448249 cites W1977992740 @default.
- W4200448249 cites W1979645313 @default.
- W4200448249 cites W1988063372 @default.
- W4200448249 cites W1988591536 @default.
- W4200448249 cites W1988963778 @default.
- W4200448249 cites W1993069045 @default.
- W4200448249 cites W2003189414 @default.
- W4200448249 cites W2004860873 @default.
- W4200448249 cites W2005114907 @default.
- W4200448249 cites W2005649573 @default.
- W4200448249 cites W2021327933 @default.
- W4200448249 cites W2024732162 @default.
- W4200448249 cites W2035555288 @default.
- W4200448249 cites W2036289626 @default.
- W4200448249 cites W2041106491 @default.
- W4200448249 cites W2043933527 @default.
- W4200448249 cites W2046875003 @default.
- W4200448249 cites W2050514223 @default.
- W4200448249 cites W2052734713 @default.
- W4200448249 cites W2059121727 @default.
- W4200448249 cites W2059327220 @default.
- W4200448249 cites W2066828854 @default.
- W4200448249 cites W2070536867 @default.
- W4200448249 cites W2075489374 @default.
- W4200448249 cites W2076508746 @default.
- W4200448249 cites W2081118881 @default.
- W4200448249 cites W2085908638 @default.
- W4200448249 cites W2089079408 @default.
- W4200448249 cites W2091184493 @default.
- W4200448249 cites W2091392780 @default.
- W4200448249 cites W2094440342 @default.
- W4200448249 cites W2103826029 @default.
- W4200448249 cites W2104975486 @default.
- W4200448249 cites W2113154377 @default.
- W4200448249 cites W2116507044 @default.
- W4200448249 cites W2119705547 @default.
- W4200448249 cites W2127510753 @default.
- W4200448249 cites W2130042267 @default.
- W4200448249 cites W2136092558 @default.
- W4200448249 cites W2142380122 @default.
- W4200448249 cites W2142903460 @default.
- W4200448249 cites W2144923407 @default.
- W4200448249 cites W2168143240 @default.
- W4200448249 cites W2314733460 @default.
- W4200448249 cites W2341034925 @default.
- W4200448249 cites W2390960615 @default.
- W4200448249 cites W2404038274 @default.
- W4200448249 cites W2419137754 @default.
- W4200448249 cites W2465847861 @default.
- W4200448249 cites W2522823577 @default.
- W4200448249 cites W2554285426 @default.
- W4200448249 cites W2557300980 @default.
- W4200448249 cites W2557771700 @default.
- W4200448249 cites W2581624425 @default.
- W4200448249 cites W2587986386 @default.
- W4200448249 cites W2589485969 @default.
- W4200448249 cites W2611772571 @default.
- W4200448249 cites W2750855483 @default.
- W4200448249 cites W2759818136 @default.
- W4200448249 cites W2766347561 @default.
- W4200448249 cites W2767061720 @default.
- W4200448249 cites W2771891972 @default.
- W4200448249 cites W2782839094 @default.
- W4200448249 cites W2783703544 @default.
- W4200448249 cites W2802155058 @default.
- W4200448249 cites W2900975981 @default.
- W4200448249 cites W2911670192 @default.
- W4200448249 cites W2916225289 @default.
- W4200448249 cites W2921965667 @default.
- W4200448249 cites W2937225050 @default.