PANGAEA_995719 Aerosol absorption coefficients at seven wavelengths measured at Neumayer station in 2025 Jurányi, Zsófia; Weis, Lukas Aerosol absorption coefficients at seven wavelengths measured at Neumayer station in 2025 2026-06-29 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.995719 Investigator Zsófia Jurányi zsofia.juranyi@awi.de Earth Science DATE/TIME Duration Aerosol absorption at 370 nm Aerosol absorption at 470 nm Aerosol absorption at 520 nm Aerosol absorption at 590 nm Aerosol absorption at 660 nm Aerosol absorption at 880 nm Aerosol absorption at 950 nm geoscientificInformation Air chemistry observatory Neumayer_based Neumayer_SPUSO Aethalometer, AE33, Magee Scientific NEUMAYER III 2025-01-01 2026-01-01 Complete -70.65 -70.65 -8.25 -8.25 AWI_AC Atmospheric Chemistry @ AWI unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 69226 data points text/tab-separated-values O2A Registry: Metadata for spectrophotometer Aethalometer AE33 at current version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, hdl:10013/sensor.a29beb05-bbbe-4186-8b90-19d7d140b71f

We operate a 7-wavelength aethalometer (Model AE33, Magee Scientific) since 2019 in the Aerosol and Trace Gas Observatory at Neumayer III Station in Antarctica. The aethalometer model AE33 collects aerosol particles continuously by drawing the aerosol-laden air stream through a spot on the filter tape. It analyzes the aerosol by measuring the transmission of light through one portion of the filter tape containing the sample, versus the transmission through an unloaded portion of the filter tape acting as a reference area. This analysis is done at seven optical wavelengths spanning the range from the near-infrared to the near-ultraviolet. The aethalometer calculates the instantaneous concentration of optically-absorbing aerosols from the rate of change of the attenuation of light transmitted through the particle-laden filter. The intake of the aerosol inlet can be found on top of the observatory at approx. 5-7 m above ground. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995719"! ** Important notice: the absorption coefficients are extremely low at Neumayer, typically lower than the instrumental noise level. Therefore even among the one-hour averages negative values are present.

http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME http://www.awi.de/en/infrastructure/stations/neumayer_station/observatories/air_chemistry_observatory/technical_aspects/ Neumayer_SPUSO https://doi.org/10.17815/jlsrf-2-152 NEUMAYER III https://hdl.handle.net/10013/sensor.a29beb05-bbbe-4186-8b90-19d7d140b71f Metadata for spectrophotometer Aethalometer AE33 at current version https://www.awi.de/en/science/long-term-observations/atmosphere/antarctic-neumayer/air-chemistry.html AWI_AC PANGAEA_987862 DIF 9.4 2026-06-29 2026-07-28