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Ceilometer Aerosol Profiling Vs. Raman Lidar in the Frame of Interact Campaign of Actris : Volume 7, Issue 12 (12/12/2014)

By Madonna, F.

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Book Id: WPLBN0004000089
Format Type: PDF Article :
File Size: Pages 41
Reproduction Date: 2015

Title: Ceilometer Aerosol Profiling Vs. Raman Lidar in the Frame of Interact Campaign of Actris : Volume 7, Issue 12 (12/12/2014)  
Author: Madonna, F.
Volume: Vol. 7, Issue 12
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Hey, J. V., Amato, F., Pappalardo, G., & Madonna, F. (2014). Ceilometer Aerosol Profiling Vs. Raman Lidar in the Frame of Interact Campaign of Actris : Volume 7, Issue 12 (12/12/2014). Retrieved from http://www.nationalpubliclibrary.info/


Description
Description: Consiglio Nazionale delle Ricerche, Istituto di Metodologie per l'Analisi Ambientale (CNR-IMAA), C.da S. Loja – Zona Industriale, 85050 Tito Scalo, Potenza, Italy. Despite their differences from more advanced and more powerful lidars, the low construction and operation cost of ceilometers, originally designed for cloud base height monitoring, has fostered their use for the quantitative study of aerosol properties. The large number of ceilometers available worldwide represents a strong motivation to investigate both the extent to which they can be used to fill in the geographical gaps between advanced lidar stations and also how their continuous data flow can be linked to existing networks of the more advanced lidars, like EARLINET (European Aerosol Research LIdar NETwork).

In this paper, multi-wavelength Raman lidar measurements are used to investigate the capability of ceilometers to provide reliable information about atmospheric aerosol content through the INTERACT (INTERcomparison of Aerosol and Cloud Tracking) campaign carried out at the CNR-IMAA Atmospheric Observatory (760 m a.s.l., 40.60° N, 15.72° E), in the framework of ACTRIS (Aerosol Clouds Trace gases Research InfraStructure) FP7 project. This work is the first time that three different commercial ceilometers with an advanced Raman lidar are compared over a period of six months. The comparison of the attenuated backscatter profiles from a multi-wavelength Raman lidar and three ceilometers (CHM15k, CS135s, CT25K) reveals differences due to the expected discrepancy in the SNR but also due to effect of changes in the ambient temperature on the short and mid-term stability of ceilometer calibration. A large instability of ceilometers in the incomplete overlap region has also been observed, making the use of a single overlap correction function for the whole duration of the campaign critical. Therefore, technological improvements of ceilometers towards their operational use in the monitoring of the atmospheric aerosol in the low and free troposphere are needed.


Summary
Ceilometer aerosol profiling vs. Raman lidar in the frame of INTERACT campaign of ACTRIS

Excerpt
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