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Название: Light-absorbing capacity of volcanic dust from Iceland and Chile
Авторы: Koivusalo, T. F. A.
Dagsson-Waldhauserová, P.
Gritsevich, M.
Peltoniemi, J.
Дата публикации: 2024
Издатель: Frontiers Media SA
Библиографическое описание: Koivusalo, T. F. A., Dagsson-Waldhauserová, P., Gritsevich, M., & Peltoniemi, J. (2024). Light-absorbing capacity of volcanic dust from Iceland and Chile. Frontiers in Earth Science, 12, [1348082]. https://doi.org/10.3389/feart.2024.1348082
Аннотация: It is increasingly recognized that light-absorbing impurities (LAI) deposited on snow and ice affect their albedo and facilitate melting processes leading to various feedback loops, such as the ice albedo feedback mechanism. Black carbon (BC) is often considered the most important LAI, but some areas can be more impacted by high dust emissions. Iceland is one of the most important high latitude sources for the Arctic due to high emissions and the volcanic nature of the dust. We studied optical properties of volcanic dust from Iceland and Chile to understand how it interacts with the Sun’s radiation and affects areas of deposition as LAI. Optical properties of dust samples were measured at the laboratory of the Finnish Geospatial Research Institute (FGI) using the latest setup of the FGI’s goniospectrometer. We found that, depending on the particle size, the albedo of dry volcanic dust on the visible spectrum is as low as 0.03, similar to that of BC, and the albedo decreases with increasing particle size. Wet dust reduces its albedo by 66% compared to dry sample. This supports the comparability of their albedo reducing effects to BC as LAIs, and highlights their significant role in albedo reduction of snow and ice areas. The potential use of the results from our measurements is diverse, including their use as a ground truth reference for Earth Observation and remote sensing studies, estimating climate change over time, as well as measuring other ecological effects caused by changes in atmospheric composition or land cover. Copyright © 2024 Koivusalo, Dagsson-Waldhauserová, Gritsevich and Peltoniemi.
Ключевые слова: ALBEDO
CLIMATE CHANGE
CRYOSPHERE
DUST
LIGHT-ABSORBING IMPURITIES
OPTICAL PROPERTIES
SNOW
VOLCANIC SAND
CHILE
FINLAND
ICELAND
ALBEDO
ATMOSPHERIC CHEMISTRY
BLACK CARBON
CLIMATE CHANGE
CRYOSPHERE
FEEDBACK MECHANISM
LAND COVER
OPTICAL PROPERTY
PARTICLE SIZE
RADIATIVE FORCING
REMOTE SENSING
SAND
SNOW
VOLCANIC AEROSOL
VOLCANIC ASH
VOLCANIC GAS
URI: http://elar.urfu.ru/handle/10995/141551
Условия доступа: info:eu-repo/semantics/openAccess
cc-by
Идентификатор SCOPUS: 85200889990
Идентификатор WOS: 001286207400001
Идентификатор PURE: 61567807
ISSN: 2296-6463
DOI: 10.3389/feart.2024.1348082
Сведения о поддержке: Grantová Agentura České Republiky, GAČR; National Power Agency of Iceland; Icelandic International Development Agency, ICEIDA; Research Council of Finland, AKA, (325806); Institute of Botany of the Czech Academy of Sciences, (20-06168Y)
The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This work was supported by the Academy of Finland project no. 325806 (PlanetS), Czech Science Foundation project 20-06168Y and Orkuranns\u00F3knasj\u00F3\u00F0ur of the National Power Agency of Iceland.
Карточка проекта РНФ: Grantova Agentura Ceske Republiky, GACR; National Power Agency of Iceland; Icelandic International Development Agency, ICEIDA; Research Council of Finland, AKA, (325806); Institute of Botany of the Czech Academy of Sciences, (20-06168Y)
The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This work was supported by the Academy of Finland project no. 325806 (PlanetS), Czech Science Foundation project 20-06168Y and Orkuranns\u00F3knasj\u00F3\u00F0ur of the National Power Agency of Iceland.
Располагается в коллекциях:Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC

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