Details:

Journal Title:
Atmospheric Measurement Techniques
Personal Author:
Ogren, John A. ; Wendell, Jim ; Andrews, Elisabeth ; Sheridan, Patrick J.
Ogren, John A. ; Wendell, Jim ; Andrews, Elisabeth ; Sheridan, Patrick J. Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; GML (Global Monitoring Laboratory)
OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; GML (Global Monitoring Laboratory) Less -
Description:
A new photometer is described for continuous determination of the aerosol light absorption coefficient, optimized for long-term studies of the climate-forcing properties of aerosols. Measurements of the light attenuation coefficient are made at blue, green, and red wavelengths, with a detection limit of 0.02 Mm(-1) and a precision of 4 % for hourly averages. The uncertainty of the light absorption coefficient is primarily determined by the uncertainty of the correction scheme commonly used to convert the measured light attenuation to light absorption coefficient and ranges from about 20 % at sites with high loadings of strongly absorbing aerosols up to 100 % or more at sites with low loadings of weakly absorbing aerosols. Much lower uncertainties (ca. 40 %) for the latter case can be achieved with an advanced correction scheme.
Source:
Atmospheric Measurement Techniques, 10(12), 4805-4818.
DOI:
https://doi.org/10.5194/amt-10-4805-2017
Document Type:
Journal Article
Rights Information:
CC BY
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:ac8fdccd6842de215805fda4315ace909dc9214598b442d27a522d55a6c55173
Download URL:
https://repository.library.noaa.gov/view/noaa/22286/noaa_22286_DS1.pdf
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