Date (Creation)

2022-11-14T00:00:00

Citation identifier

https://metadata.iadc.cnr.it/geonetwork/srv/api/records/5148448c-50fc-4db9-8938-56b5e0b7c4be

Purpose

Aerosol optical properties monitoring.

Status

On going

Point of contact

Organisation name	Individual name	Electronic mail address	Role
CNR-ISP	Mauro Mazzola	mauro.mazzola@cnr.it	Owner
CNR-ISP	Stefania Gilardoni	stefania.gilardoni@cnr.it	Author
CNR-ISP	Angelo Lupi	angelo.lupi@cnr.it	Author

Maintenance and update frequency

As needed

Keywords

• aerosol scattering absorption; aerosol absorption coefficient

GEMET - INSPIRE themes, version 1.0

• Atmospheric conditions

GCMD - Science Keywords

• AEROSOLS

• CARBONACEOUS AEROSOLS

• AEROSOL EXTINCTION

• ABSORPTION

• AEROSOL BACKSCATTER

• AEROSOL PARTICLE PROPERTIES

• SCATTERING

GCMD - Instruments

• PSAP

• NEPHELOMETERS

• PHOTOMETERS

GCMD - Providers

• ITALY

GCMD - Locations

• ARCTIC

• SVALBARD AND JAN MAYEN

IADC Research Activities

• Chemistry and physics of the atmosphere

Use limitation

Creative-Commons CC BY-NC-SA 4.0

Spatial representation type

Text, table

Denominator

1

Language

English

Topic category

• Climatology, meteorology, atmosphere

Begin date

2021-01-01

End date

2021-12-31 Now

Unique resource identifier

WGS84

Distribution format

Name	Version
ASCII	1

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
IADC	IADC	info@iadc.cnr.it	Distributor

Hierarchy level

Dataset

Statement

At the Gruvebadet Aerosol Laboratory (GAL) aerosol scattering coefficient is measured at a single wavelength (530 nm) using a Radiance Research nephelometer. Data is acquired continuously at 1-minute time resolution. Aerosol light absorption is measured at three wavelengths with a Radiance Research PSAP at 1-minute time resolution at 467 nm, 530 nm, and 660 nm.

For the scattering coefficient the truncation error correction is performed according to Muller et al. (2009) and assuming a scattering angstrom exponent of 1.15 (Schmeisser et al., 2018). For absorption coefficient, the PSAP measurements are corrected according to Bond et al. (1999) for flow and sampling filter area and according to Virkkula et al. (2011) for loading and shadowing effect, using simultaneous scattering coefficient measurements. For all the aerosols instruments, quality control procedures will include periodic flow calibration, and blank measurements using a HEPA filter to detect potential leak and verify the instrumental detection limit. In addition, the aethalometer quality assurance procedure will include the leak check to test and quantify the presence potential leaks, the stability test to verify sensors noise, and the optical performance test to check for the detector response at the different operating wavelengths. Both absorption and scattering coefficient measurements are normalized at standard pressure and temperature conditions (1 atm and 0 degC), averaged over a 1-hour period, and provided at all available wavelengths.

Müller, T., Nowak, A., Wiedensohler, A., Sheridan, P., Laborde, M., Covert, D.S., Marinoni, A., Imre, K., Henzing, B., Roger, J.C., Martins dos Santos, S., Wilhelm, R., Wang, Y.Q., de Leeuw, G. (2009) Angular Illumination and Truncation of Three Different Integrating Nephelometers: Implications for Empirical, Size-Based Corrections, Aerosol Science and Technology, 43:6, 581-586, DOI: 10.1080/02786820902798484;

Schmeisser, L., Backman, J., Ogren, J. A., Andrews, E., Asmi, E., Starkweather, S., Uttal, T., Fiebig, M., Sharma, S., Eleftheriadis, K., Vratolis, S., Bergin, M., Tunved, P., and Jefferson, A.: Seasonality of aerosol optical properties in the Arctic, Atmos. Chem. Phys., 18, 11599-11622, https://doi.org/10.5194/acp-18-11599-2018, 2018;

Bond, T.C., Anderson, T.L., Campbell, D. (1999) Calibration and Intercomparison of Filter-Based Measurements of Visible Light Absorption by Aerosols, Aerosol Science and Technology, 30:6, 582-600, DOI: 10.1080/027868299304435;

Virkkula, A., Backman, J., Aalto, P. P., Hulkkonen, M., Riuttanen, L., Nieminen, T., dal Maso, M., Sogacheva, L., de Leeuw, G., and Kulmala, M.: Seasonal cycle, size dependencies, and source analyses of aerosol optical properties at the SMEAR II measurement station in Hyytiälä, Finland, Atmos. Chem. Phys., 11, 4445-4468, https://doi.org/10.5194/acp-11-4445-2011, 2011.

Metadata

File identifier

5148448c-50fc-4db9-8938-56b5e0b7c4be XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2025-05-12T14:24:49

Metadata standard name

ISO 19139

Metadata standard version

1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
CNR-ISP	Mauro Mazzola	mauro.mazzola@cnr.it	Point of contact