Citation:

PANGAEA.956202

Name: Aerosol absorption coefficients at seven wavelengths measured at Neumayer station in 2022
Creator: Rolf Weller
Published: 2023-03-07
License: https://creativecommons.org/licenses/by/4.0/
Keywords: aerosol; aerosol absorption coefficient; Air Chemistry Observatory; Neumayer Station; Spuso

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Abstract:

We operate a 7-wavelength aethalometer (Model AE33, Magee Scientific) which is in operation since 23 January 2019 ongoing. 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.

Keyword(s):

aerosol; aerosol absorption coefficient; Air Chemistry Observatory; Neumayer Station; Spuso

Project(s):

Atmospheric Chemistry @ AWI (AWI_AC)

Coverage:

Latitude: -70.650000 * Longitude: -8.250000

Date/Time Start: 2022-01-01T00:00:00 * Date/Time End: 2023-01-01T00:00:00

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: * Basis: NEUMAYER III * Method/Device: (SPUSO)

Domain attribute(s):

Sensor URI: hdl:10013/sensor.a29beb05-bbbe-4186-8b90-19d7d140b71f

Comment:

This file comprises continuous measurements of a 7-wavelength Aethalometern (Modell AE33, Magee Sci.) between 01 January 2022 00:00 and 31 December 2022 24:00. This instrument measures atmospheric light absorption by aerosol (mainly caused by black carbon, BC) at 7 different wavelength between 370 nm and 950 nm. Raw data were originally sampled in one-minute resolution. Finally, hourly averaged data are presented here.

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 370 nm	abs(370)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific
6	Aerosol absorption at 470 nm	abs(470)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific
7	Aerosol absorption at 520 nm	abs(520)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific
8	Aerosol absorption at 590 nm	abs(590)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific
9	Aerosol absorption at 660 nm	abs(660)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific
10	Aerosol absorption at 880 nm	abs(880)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific
11	Aerosol absorption at 950 nm	abs(950)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific
12	Aerosol absorption at 370 nm	abs(370)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific	scattering corrected
13	Aerosol absorption at 470 nm	abs(470)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific	scattering corrected
14	Aerosol absorption at 520 nm	abs(520)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific	scattering corrected
15	Aerosol absorption at 590 nm	abs(590)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific	scattering corrected
16	Aerosol absorption at 660 nm	abs(660)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific	scattering corrected
17	Aerosol absorption at 880 nm	abs(880)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific	scattering corrected
18	Aerosol absorption at 950 nm	abs(950)	1/Mm	Weller, Rolf	Aethalometer, AE33, Magee Scientific	scattering corrected

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

131400 data points

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