Black carbon effects and seasonal isotope records in the Godwin‑Austen snowpack and K2 high-altitude camps

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dc.contributor.authorGonzález-Santacruz, Nicolás
dc.contributor.authorFernandoy, Francisco b
dc.contributor.authorGoto-Azuma, Kumiko
dc.contributor.authorHirabayashi, Motohiro
dc.contributor.authorCordero, Raúl
dc.contributor.authorFeron, Sarah
dc.contributor.authorFaria, Sérgio Henrique
dc.date.accessioned2025-04-09T22:11:08Z
dc.date.available2025-04-09T22:11:08Z
dc.date.issued2025
dc.descriptionIndexación: Scopus.
dc.descriptionTEXTO COMPLETO EN INGLÉS
dc.description.abstractThis study investigates black carbon (BC) concentrations in the seasonal snowpack on the Godwin-Austen Glacier and in surface snow at K2 Camps 1 and 2 (Karakoram Range), assessing their impact on snowmelt during the 2019 ablation season. Potential BC and moisture sources were identified through back-trajectory analysis and atmospheric reanalyses. Variations in water stable isotopes (δ18O and δ2H) in the snowpack were analysed to confirm its representativeness as a climatic record for the 2018–19 accumulation season. The average BC concentration in the snowpits (12 ng g-1) generated 66 mm w.e. (or 53 mm w.e. excluding the basal zone) of meltwater. Surface snow at K2 Camp 1 showed BC concentrations of 7 ng g-1, consistent with those on the snowpack surface, suggesting it may reflect local BC levels in late February 2019. In contrast, higher concentrations at K2 Camp 2 (26 ng g-1) were potentially linked to expedition activities. © 2025 Cambridge University Press. All rights reserved.
dc.description.urihttps://www.cambridge.org/core/journals/journal-of-glaciology/article/black-carbon-effects-and-seasonal-isotope-records-in-the-godwinausten-snowpack-and-k2-highaltitude-camps/AD26308FE73E25E38CB71F8607A2DB0E
dc.identifier.doi10.1017/jog.2024.111
dc.identifier.issn00221430
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/64101
dc.language.isoen
dc.publisherJournal of Glaciology, 2025
dc.rights.licenseAttribution 4.0 International CC BY 4.0 Deed
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBlack carbon (BC)
dc.subjectConcentrations
dc.subjectSeasonal snowpack
dc.subjectGodwin-Austen
dc.subjectGlacier
dc.subjectK2 Camps 1 and 2
dc.subjectKarakoram Range
dc.subjectSnowmelt
dc.titleBlack carbon effects and seasonal isotope records in the Godwin‑Austen snowpack and K2 high-altitude camps
dc.typeArtículo
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