Observation of Clouds Using the CSIR Transportable LIDAR: A Case Study over Durban, South Africa

The Council for Scientific and Industrial Research (CSIR) transportable Light Detection And Ranging (LIDAR) was used to collect data over Durban (29.9°S, 30.9°E) during 20–23 November 2012. Aerosol measurements have been carried out in the past over Durban; however, no cloud measurements using LIDAR...

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Main Authors: Lerato Shikwambana, Venkataraman Sivakumar
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Advances in Meteorology
Online Access:http://dx.doi.org/10.1155/2016/4184512
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author Lerato Shikwambana
Venkataraman Sivakumar
author_facet Lerato Shikwambana
Venkataraman Sivakumar
author_sort Lerato Shikwambana
collection DOAJ
description The Council for Scientific and Industrial Research (CSIR) transportable Light Detection And Ranging (LIDAR) was used to collect data over Durban (29.9°S, 30.9°E) during 20–23 November 2012. Aerosol measurements have been carried out in the past over Durban; however, no cloud measurements using LIDAR have ever been performed. Therefore, this study further motivates the continuation of LIDAR for atmospheric research over Durban. Low level clouds were observed on 20–22 November 2012 and high level clouds were observed on 23 November 2012. The low level cloud could be classified as stratocumulus clouds, whereas the high level clouds could be classified as cirrus clouds. Low level cloud layers showed high extinction coefficients values ranging between 0.0009 and 0.0044 m−1, whereas low extinction coefficients for high level clouds were observed at values ranging between 0.000001 and 0.000002 m−1. Optical depth showed a high variability for 20 and 21 November 2012. This indicates a change in the composition and/or thickness of the cloud. For 22 and 23 November 2012, almost similar values of optical depth were observed. Cloud-Aerosol LIDAR and Infrared Pathfinder Satellite Observations (CALIPSO) revealed high level clouds while the CSIR LIDAR could not. However, the two instruments complement each other well to describe the cloudy condition.
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spelling doaj-art-b244b4a4725b4f90a068200614dfa4ba2025-02-03T06:13:48ZengWileyAdvances in Meteorology1687-93091687-93172016-01-01201610.1155/2016/41845124184512Observation of Clouds Using the CSIR Transportable LIDAR: A Case Study over Durban, South AfricaLerato Shikwambana0Venkataraman Sivakumar1School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South AfricaSchool of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South AfricaThe Council for Scientific and Industrial Research (CSIR) transportable Light Detection And Ranging (LIDAR) was used to collect data over Durban (29.9°S, 30.9°E) during 20–23 November 2012. Aerosol measurements have been carried out in the past over Durban; however, no cloud measurements using LIDAR have ever been performed. Therefore, this study further motivates the continuation of LIDAR for atmospheric research over Durban. Low level clouds were observed on 20–22 November 2012 and high level clouds were observed on 23 November 2012. The low level cloud could be classified as stratocumulus clouds, whereas the high level clouds could be classified as cirrus clouds. Low level cloud layers showed high extinction coefficients values ranging between 0.0009 and 0.0044 m−1, whereas low extinction coefficients for high level clouds were observed at values ranging between 0.000001 and 0.000002 m−1. Optical depth showed a high variability for 20 and 21 November 2012. This indicates a change in the composition and/or thickness of the cloud. For 22 and 23 November 2012, almost similar values of optical depth were observed. Cloud-Aerosol LIDAR and Infrared Pathfinder Satellite Observations (CALIPSO) revealed high level clouds while the CSIR LIDAR could not. However, the two instruments complement each other well to describe the cloudy condition.http://dx.doi.org/10.1155/2016/4184512
spellingShingle Lerato Shikwambana
Venkataraman Sivakumar
Observation of Clouds Using the CSIR Transportable LIDAR: A Case Study over Durban, South Africa
Advances in Meteorology
title Observation of Clouds Using the CSIR Transportable LIDAR: A Case Study over Durban, South Africa
title_full Observation of Clouds Using the CSIR Transportable LIDAR: A Case Study over Durban, South Africa
title_fullStr Observation of Clouds Using the CSIR Transportable LIDAR: A Case Study over Durban, South Africa
title_full_unstemmed Observation of Clouds Using the CSIR Transportable LIDAR: A Case Study over Durban, South Africa
title_short Observation of Clouds Using the CSIR Transportable LIDAR: A Case Study over Durban, South Africa
title_sort observation of clouds using the csir transportable lidar a case study over durban south africa
url http://dx.doi.org/10.1155/2016/4184512
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AT venkataramansivakumar observationofcloudsusingthecsirtransportablelidaracasestudyoverdurbansouthafrica