PANGAEA_965468 Aerosol light absorption coefficients and black carbon concentrations at Neumayer for the year 2023 Weller, Rolf Aerosol light absorption coefficients and black carbon concentrations at Neumayer for the year 2023 2024-02-09 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.965468 Investigator Rolf Weller rolf.weller@awi.de Earth Science HEIGHT above ground DATE/TIME Duration Aerosol absorption at 637 nm Black carbon, aerosol geoscientificInformation aerosol AIRCHEM Air chemistry observatory Atmospheric chemistry Neumayer_based Neumayer_SPUSO Spuso Multi angle absorption spectrometer MAAP5012 NEUMAYER III 2023-01-01 2024-01-01 Complete -70.65 -70.65 -8.25 -8.25 5.0 m (HEIGHT above ground) 5.0 m (HEIGHT above ground) AWI_AC Atmospheric Chemistry @ AWI unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 26274 data points text/tab-separated-values Weller, Rolf (2021): Aerosol light absorption coefficients and black carbon concentrations at Neumayer (2006-2020) [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.938991 Weller, Rolf (2023): Aerosol light absorption coefficients and black carbon concentrations at Neumayer for the year 2021 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.956089 Weller, Rolf (2023): Aerosol light absorption coefficients and black carbon concentrations at Neumayer for the year 2022 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.956056

We operate a multi angle absorption photometer MAAP (Model 5012, Thermo Electron Corp.). which is in operation since March 2006 ongoing. This instrument measures atmospheric light absorption by aerosol (mainly caused by black carbon, BC). To this end, ambient aerosol was sampled on a glass filter tape. The measured absorption coefficients abs(637) refer to a wavelength of 637 nm. Raw data were originally sampled in one-minute resolution. Finally, hourly averaged MAAP data are presented here. We also provide BC concentrations (ng/m³) derived from the absorption coefficients using the specific BC attenuation cross section (QBC) of 6.6 m²/g. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.965468"! ** Important notice: BC concentrations are extremely low at Neumayer, typically lower than the instrumental noise level referring to 1 hour averages (between 0.04 and 0.05 Mm-1). Notwithstanding, we archived hourly averages, but one has to be aware that negative values may not be removed when smoothing the data or when calculating averages with lower temporal resolution, otherwise the results would exhibit a substantial positive bias!

http://en.wikipedia.org/wiki/Height HEIGHT above ground 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://doi.pangaea.de/10.1594/PANGAEA.938991 Aerosol light absorption coefficients and black carbon concentrations at Neumayer (2006-2020) https://doi.pangaea.de/10.1594/PANGAEA.956056 Aerosol light absorption coefficients and black carbon concentrations at Neumayer for the year 2022 https://doi.pangaea.de/10.1594/PANGAEA.956089 Aerosol light absorption coefficients and black carbon concentrations at Neumayer for the year 2021 https://www.awi.de/en/science/long-term-observations/atmosphere/antarctic-neumayer/air-chemistry.html AWI_AC PANGAEA_987702 DIF 9.4 2024-02-09 2026-06-19