Bipolar long-term high temporal resolution broadband measurement system for  incoming  and  outgoing  solar  UV radiation, and   snow   UV   albedo,  at Sodankylä   (67°N) and Marambio (64°S)

Aerosol particle optical properties were measured continuously between years 2013-2015 at the Marambio station in the Antarctic Peninsula. Annual cycles of particle scattering and absorption were studied and explained using measured particle chemical composition and the analysis of air mass transport patterns. The particle scattering was found elevated during the winter but the absorption did not show any clear annual cycle. The aerosol single scattering albedo at λ = 637 nm was on average 0.96 ± 0.10, with a median of 0.99. Aerosol scattering Ångström exponent increased during summer, indicating an increasing fraction of fine mode particles. The aerosol was mainly composed of sea salt, sulphate and crustal soil minerals, and most of the particle mass were in the coarse mode. Both the particle absorption and scattering were increased during high wind speeds. This was explained by the dominance of the primary marine sea-spray and wind-blown soil dust sources. In contrast, the back-trajectory analysis suggested that long-range transport has only a minor role as a source of absorbing aerosol at the peninsula.

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“…More information on the measurement site can be found in previous publications (e.g. Karhu et al, 2003;Meinander et al, 2016).…”

Section: Site Descriptionmentioning

confidence: 99%

Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula

Asmi

Neitola

Teinilä

et al. 2018

Tellus B: Chemical and Physical Meteorology

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“…Manual snow measurements have been made at the Weissfluhjoch site since 1936. Regular measurements include daily snow depth and depth of new snow, bi-weekly ram sonde measurements, definition of layers, grain size, grain type, hardness, temperature profile and SWE profile (Meister, 2009). Measurements at the Col de Porte site were made in 1993-2011.…”

Section: Introductionmentioning

confidence: 99%

Sodankylä manual snow survey program

Leppänen¹,

Kontu²,

Hannula³

et al. 2015

Preprint

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Abstract. The manual snow survey program of the Arctic Research Centre of Finnish Meteorological Institute (FMI-ARC) consists of numerous observations of natural seasonal taiga snowpack in Sodankylä, northern Finland. The easily accessible measurement areas represent the typical forest and soil types in the boreal forest zone. Systematic snow measurements began in 1909 with snow depth (SD) and snow water equivalent (SWE); however some older records of the snow and ice cover exists. In 2006 the manual snow survey program expanded to cover snow macro- and microstructure from regular snow pits at several sites using both traditional and novel measurement techniques. Present-day measurements include observations of SD, SWE, temperature, density, horizontal layers of snow, grain size, specific surface area (SSA), and liquid water content (LWC). Regular snow pit measurements are performed weekly during the snow season. Extensive time series of manual snow measurements are important for the monitoring of temporal and spatial changes in seasonal snowpack. This snow survey program is an excellent base for the future research of snow properties.

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Sodankylä manual snow survey program

Leppänen

Kontu

Hannula

et al. 2016

Geosci. Instrum. Method. Data Syst.

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Abstract. The manual snow survey program of the Arctic Research Centre of the Finnish Meteorological Institute (FMI-ARC) consists of numerous observations of natural seasonal taiga snowpack in Sodankylä, northern Finland. The easily accessible measurement areas represent the typical forest and soil types in the boreal forest zone. Systematic snow measurements began in 1909 with snow depth (HS) and snow water equivalent (SWE). In 2006 the manual snow survey program expanded to cover snow macro-and microstructure from regular snow pits at several sites using both traditional and novel measurement techniques. Present-day snow pit measurements include observations of HS, SWE, temperature, density, stratigraphy, grain size, specific surface area (SSA) and liquid water content (LWC). Regular snow pit measurements are performed weekly during the snow season. Extensive time series of manual snow measurements are important for the monitoring of temporal and spatial changes in seasonal snowpack. This snow survey program is an excellent base for the future research of snow properties.

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Bipolar long-term high temporal resolution broadband measurement system for incoming and outgoing solar UV radiation, and snow UV albedo, at Sodankylä (67°N) and Marambio (64°S)

Cited by 3 publications

References 8 publications

Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula

Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula

Sodankylä manual snow survey program

Sodankylä manual snow survey program

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