Concentration, sources and light absorption characteristics of
dissolved organic carbon on a medium-sized valley glacier,  northern
Tibetan Plateau

Yan, Fangping; Kang, Shichang; Li, Chaoliu; Zhang, Yulan; Qin, Xiang; Li, Yang; Zhang, Xiaopeng; Hu, Zhanyi; Chen, Pengfei; Li, Xiaofei; Qu, Bin; Sillanpää, Mika

doi:10.5194/tc-10-2611-2016

Cited by 74 publications

(71 citation statements)

References 55 publications

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“…A lack of OC consideration due to the limitation of the SNICAR model also affected the results in this study. Due to its light-absorbing properties (Andreae and Gelencsér, 2006;Bahaur et al, 2012;Yan et al, 2016), OC in snow cover can also absorb solar radiation and reduce the surface albedo. Previous studies indicated that OC was responsible for more than 10-40 % of the light absorption Doherty et al, 2010;Lin et al, 2014;Wang et al, 2015).…”

Section: Limitations and Implications For Snow Cover And Glaciers On mentioning

confidence: 99%

“…Light-absorbing OC in snow can contribute significantly to the absorption of ultraviolet/visible light (Andreae and Gelencsér, 2006;Yan et al, 2016). Bahadur et al (2012) studied aerosol optical properties derived from the Aerosol Robotic Network (AERONET) measurements and estimated that, in California, the OC absorption at wavelength of 440 nm was approximately 40 % of the BC absorption.…”

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confidence: 99%

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Black carbon and mineral dust in snow cover on the Tibetan Plateau

et al. 2018

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Abstract. Snow cover plays a key role for sustaining ecology and society in mountainous regions. Light-absorbing particulates (including black carbon, organic carbon, and mineral dust) deposited on snow can reduce surface albedo and contribute to the near-worldwide melting of snow and ice. This study focused on understanding the role of black carbon and other water-insoluble light-absorbing particulates in the snow cover of the Tibetan Plateau (TP). The results found that the black carbon, organic carbon, and dust concentrations in snow cover generally ranged from 202 to 17 468 ng g −1 , 491 to 13 880 ng g −1 , and 22 to 846 µg g −1 , respectively, with higher concentrations in the central to northern areas of the TP. Back trajectory analysis suggested that the northern TP was influenced mainly by air masses from Central Asia with some Eurasian influence, and air masses in the central and Himalayan region originated mainly from Central and South Asia. The relative biomassburning-sourced black carbon contributions decreased from ∼ 50 % in the southern TP to ∼ 30 % in the northern TP. The relative contribution of black carbon and dust to snow albedo reduction reached approximately 37 and 15 %, respectively. The effect of black carbon and dust reduced the snow cover duration by 3.1 ± 0.1 to 4.4 ± 0.2 days. Meanwhile, the black carbon and dust had important implications for snowmelt water loss over the TP. The findings indicate that the impacts of black carbon and mineral dust need to be properly accounted for in future regional climate projections, particularly in the high-altitude cryosphere.

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Section: Limitations and Implications For Snow Cover And Glaciers On mentioning

confidence: 99%

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confidence: 99%

Black carbon and mineral dust in snow cover on the Tibetan Plateau

et al. 2018

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“…Mountain glaciers and ice sheets cover 11% of the land surface on Earth and store 6 petagrams of organic carbon (OC), the majority of which is WSOC (Hood et al, 2015;Yan et al, 2016). Global warming and glacier mass loss *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

“…WSOC has been proven to be absorbing sunlight at ultraviolet wavelengths (200-800 nm) (Andreae and Gelencser, 2006;Chen and Bond, 2010;Cheng et al, 2011;Bosch et al, 2014;Li et al, 2016a), and the radiative forcing caused by WSOC was estimated to account for 2-10% relative to black carbon (BC) in atmospheric aerosols in a typical pollution area of North China (Kirillova et al, 2014a) and about 10% at Laohugou (LHG) glacier, northern Tibetan Plateau (TP) (Yan et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Water soluble organic carbon (WSOC) constitutes a major fraction (20-80%) of the organic carbon in glacierized regions, and has important influences on the energy budget and radiative forcing of glaciers (Ram et al, 2010;Khare et al, 2011;Pavuluri et al, 2011;Legrand et al, 2013a;Kirillova et al, 2014a,b;Yan et al, 2016). Mountain glaciers and ice sheets cover 11% of the land surface on Earth and store 6 petagrams of organic carbon (OC), the majority of which is WSOC (Hood et al, 2015;Yan et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Distributions and light absorption property of water soluble organic carbon in a typical temperate glacier, southeastern Tibetan Plateau

Niu

Kang

et al. 2018

Tellus B: Chemical and Physical Meteorology

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Year‐round optical properties and source characterization of Arctic organic carbon aerosols on the North Slope Alaska

Barrett

Sheesley

2017

JGR Atmospheres

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Long‐term data on organic aerosol concentration and optical properties are needed in the Arctic to improve characterization of radiative forcing by atmospheric aerosols. This study presents the seasonal trends (summer 2012 to summer 2013) of organic carbon (OC) and water‐soluble organic carbon (WSOC) along with optical properties of light‐absorbing OC from a yearlong sampling campaign in Utqiaġvik, AK. Ambient OC concentrations for the year range from 0.008 ± 0.002 μg m−3 to 0.95 ± 0.06 μg m−3 with peaks in late summer, early fall, and late winter. On average, WSOC accounted for 57 ± 11% of the total OC burden throughout the sampling campaign, which is consistent with previous WSOC values. In order to understand the potential radiative impacts of light‐absorbing OC, the light absorption properties of WSOC were determined. Seasonal averaging revealed that the highest average mass absorption efficiency value of 1.54 ± 0.75 m2 g−1 was in the fall, with an annual range of 0.70 ± 0.44 to 1.54 ± 0.75 m2 g−1. To quantify the contributions of fossil and contemporary carbon sources to OC, radiocarbon abundance measurements were performed. For OC, fossil contributions were the greatest for select samples in the fall at 61.4 ± 9.8%, with contemporary contributions dominating OC in the spring and summer (68.9 ± 9.8% and 64.8 ± 9.8%, respectively). Back trajectories identified five major source regions to Utqiaġvik throughout the year, with a marine influence from the Arctic Ocean potentially present in all seasons. All these results point to impact from primary and secondary sources of OC in the Arctic.

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Concentration, sources and light absorption characteristics of dissolved organic carbon on a medium-sized valley glacier, northern Tibetan Plateau

Cited by 74 publications

References 55 publications

Black carbon and mineral dust in snow cover on the Tibetan Plateau

Black carbon and mineral dust in snow cover on the Tibetan Plateau

Distributions and light absorption property of water soluble organic carbon in a typical temperate glacier, southeastern Tibetan Plateau

Year‐round optical properties and source characterization of Arctic organic carbon aerosols on the North Slope Alaska

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