In-situ and path-averaged measurements of aerosol optical properties
conference paper
This paper compares in-situ and path-averaged measurements of the electro-optical transmission, with emphasis on aerosol effects. The in-situ sensors consisted of optical particle counters (OPC), the path-averaged data was provided by a 7-wavelength transmissometer (MSRT) and scintillometers (BLS). Data were collected at two sites: a homogeneous test site in Northern Germany, and over the inhomogeneous False Bay near Cape Town, South Africa. A retrieval algorithm was developed to infer characteristics of the aerosol size distribution (Junge approximation) from the MSRT data. A comparison of the various sensors suggests that the optical particle counters are over optimistic in their estimate of the transmission. For the homogeneous test site, in-situ and path-averaged sensors yield similar results. For the inhomogeneous test site, sensors may react differently or temporally separated to meteorological events such as a change in wind speed and/or direction. © 2017 SPIE.
The Society of Photo-Optical Instrumentation Engineers (SPIE)
The Society of Photo-Optical Instrumentation Engineers (SPIE)
Topics
Electro-optical propagationField trialOptical particle countersScintillometerTransmissometerAerosolsApproximation algorithmsMeteorological instrumentsOptical propertiesRadiation countersScintillationUltrasonic effectsWindAerosol optical propertyAerosol size distributionsCape Town , South AfricaField trialOptical particle countersRetrieval algorithmsScintillometerTransmissometerLight transmission
TNO Identifier
782893
ISSN
0277786X
ISBN
9781510612730
Publisher
SPIE
Article nr.
104080V
Source title
Laser Communication and Propagation through the Atmosphere and Oceans VI 2017. 8 August 2017 through 9 August 2017
Editor(s)
Hammel, S.M.
Bos, J.P.
Eijk, A.M.J. van
Bos, J.P.
Eijk, A.M.J. van
Files
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