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

Hewen Niu; Shichang Kang; Xixi Lu; Xiaofei Shi

doi:10.1080/16000889.2018.1468705

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

Tellus B: Chemical and Physical Meteorology

Volume 70 (2018): Issue 1

By: Hewen Niu, Shichang Kang, Xixi Lu and Xiaofei Shi

Open Access

|Jan 2018

Figures & Tables

The location of Mt. Yulong and the sampling sites on Baishui glacier.

Table 1.

Various snow, granular ice, and meltwater samples collected from Baishui glacier in 2014 and a summary of the relevant information (number of samples, elevations of the sampling sites, and the measured parameters).

Sampling typesSampling datesNumber of samplesElevation (m asl)IndexGranular ice5 July – 27 August 2014394346–4825WSOC, absorbanceSnow pit10 June, 2014134720WSOC, absorbanceSnow pit01 June, 2014164720WSOC, absorbanceSnow meltwater10 June, 201484506–4800WSOC, absorbanceGlacial stream water5 July – 27 August, 2014154340–4681WSOC, absorbanceSurface-aged snow01 June – 26 Sep., 2014464340–4756WSOC, absorbance

Average WSOC concentrations in snow, ice, and meltwater from Baishui glacier.

Table 2.

Water-soluble organic carbon (WSOC) and insoluble particulate carbon (IPC) concentrations (mg L⁻¹) and WSOC/TC in snow, ice, and meltwater on Mt. Yulong and the comparison of WSOC, IPC concentrations with those from other glacial regions.

WSOCIPCWSOC/TCaReferenceConcentrationSDConcentrationSD%Snow meltwater0.830.181.590.2634.2Granular ice0.680.277.050.468.79This studySurface aged snow0.590.311.610.5726.8Snow pit0.540.220.940.0936.5Stream water0.390.080.990.0628.26Average (Mt. Yulong)0.610.212.430.2826.91LHG snowpit0.420.291.010.4729.05Li et al. (2016a)Zhadang snowpit0.370.280.640.4537.04Antarctic Ice Sheet surface snow0.460.12–––Hood et al. (2015)Mendenhall, glacier Alaska, glacier0.290.02–––Stubbins and Dittmar (2012)European ice core0.32–0.05–86.49Legrand et al. (2013b)Alpine glacier ice0.140.09–––Singer et al. (2012)

[i] ^aNote: TC indicates the total carbonaceous matter in snow, ice, and meltwater, which is equivalent to IPC plus WSOC.

Depletion of WSOC concentrations in surface aged snow during the monsoon season.

Vertical distribution of the WSOC concentrations in snow pits (excavated on (a) 1 June and (b) 10 June, 2014).

Table 3.

Mass absorption cross section (MAC) of WSOC and absorption Ångström exponent (AAE_330–400) of snow and ice from Mt. Yulong and of carbonaceous aerosols from other regions. λ represents the wavelength at which MAC of WSOC was measured.

Site/sourceSample typeMAC (m² g⁻¹)AAE_330–400λ (MAC)Mt. Yulong (This study)Snow pit5.23 ± 0.340.63 ± 0.22365Granular ice8.59 ± 0.270.73 ± 0.21365Surface aged snow5.10 ± 0.410.77 ± 0.46365LHG (Yan et al., 2016)Snow1.4 ± 0.45.0 ± 5.9365Ice1.3 ± 0.73.4 ± 2.736Barrow, Alaska (Voisin et al., 2012)Snowpack2.6 ± 1.16.1 ± 0.27250Beijing, China (Cheng et al., 2011)PM_2.51.3 ± 0.767.2 ± 0.28365New Delhi (Kirillova et al., 2014b)Winter aerosols1.1–2.73.1–9.3365Berkeley, California (Kirchstetter et al., 2004)Vehicle emissions Aerosols54.8350Everest (Li et al., 2016b)Carbonaceous Aerosols1.18 ± 0.644.64 ± 1.15365

Correlations of wavelength and *MAC_wsoc* in snow and ice on Baishui glacier and LHG glacier.

Table 4.

Results of principle component analysis (PCA) carried out on WSOC and major water-soluble inorganic ions in snow pits samples: factor loading (F1, F2, F3), eigenvalues and percentual explained variance. The numbers in the table represent the percent of variance associated with each major ion. Negative values indicate an inverse relationship.

F1F2F3WSOC0.190.89−0.02IPC0.26−0.390.64K⁺0.97−0.09−0.18NH₄⁺0.93−0.24−0.06NO₃⁻0.97−0.12−0.07SO₄²⁻0.93−0.23−0.12Na⁺0.360.16−0.49Mg²⁺0.400.210.78Ca²⁺0.660.660.17Eigenvalues4.441.691.33% variance49.317.7214.73

Relative light absorbance of WSOC and BC (p) versus WSOC concentrations.

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DOI: https://doi.org/10.1080/16000889.2018.1468705 | Journal eISSN: 1600-0889

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Language: English

Page range: 1468705 - 1468705

Submitted on: Aug 1, 2017

Accepted on: Apr 17, 2018

Published on: Jan 1, 2018

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

Keywords:

flux,

glacier,

Mt. Yulong,

Tibetan Plateau,

WSOC

© 2018 Hewen Niu, Shichang Kang, Xixi Lu, Xiaofei Shi, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 70 (2018): Issue 1

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

Figures & Tables

Fig. 1.

Table 1.

Fig. 2.

Table 2.

Fig. 3.

Fig. 4.

Table 3.

Fig. 5.

Table 4.

Fig. 6.

Paradigm

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