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
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Abstract:
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.
Related to:
Weller, Rolf (2021): Aerosol light absorption coefficients and black carbon concentrations at Neumayer (2006-2020). Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.938991
Project(s):
Atmospheric Chemistry @ AWI (AWI_AC)
Coverage:
Latitude: -70.650000 * Longitude: -8.250000
Date/Time Start: 2021-01-01T00:00:00 * Date/Time End: 2022-01-01T00:00:00
Minimum HEIGHT above ground: 5 m * Maximum HEIGHT above ground: 5 m
Event(s):
Neumayer_SPUSO * Latitude: -70.650000 * Longitude: -8.250000 * Date/Time: 1983-01-01T00:00:00 * Elevation: 42.0 m * Location: Dronning Maud Land, Antarctica * Campaign: Neumayer_based * Basis: NEUMAYER III * Method/Device: Air chemistry observatory (SPUSO)
Domain attribute(s):
Comment:
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!
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | HEIGHT above ground | Height | m | Weller, Rolf | Geocode | |
| 2 | DATE/TIME | Date/Time | Weller, Rolf | Geocode – start | ||
| 3 | DATE/TIME | Date/Time | Weller, Rolf | Geocode – end | ||
| 4 | Duration | Duration | h | Weller, Rolf | ||
| 5 | Aerosol absorption at 637 nm | abs(637) | 1/Mm | Weller, Rolf | Multi angle absorption spectrometer MAAP5012 | |
| 6 | Black carbon, aerosol | Aerosol BC | ng/m3 | Weller, Rolf | Multi angle absorption spectrometer MAAP5012 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
26205 data points
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