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Atmosphere 2017, 8(4), 79; doi:10.3390/atmos8040079

Application of Convective Condensation Level Limiter in Convective Boundary Layer Height Retrieval Based on Lidar Data

1
Key Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province, Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
2
Center for Analysis and Prediction of Storms, and School of Meteorology, University of Oklahoma, Norman, OK 73072, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Robert W. Talbot
Received: 6 January 2017 / Revised: 18 April 2017 / Accepted: 20 April 2017 / Published: 23 April 2017
View Full-Text   |   Download PDF [9836 KB, uploaded 23 April 2017]   |  

Abstract

Micro pulse lidar is a promising tool for retrieving the convective boundary layer height (CBLH), but its application has been hindered by sharp extinction of the signal in high humidity conditions, e.g., clouds. To remedy this, we developed an effective and simple limiter to obtain more accurate estimates of the CBLH. The limiter is based on the algorithm for the convective condensation level (CCL) and is aimed at limiting the vertical extent of the lidar backscatter profile used in lidar methods to search for the CBLH. Four lidar methods (i.e., the gradient method, the idealized backscatter method, and two forms of the wavelet covariance methods) are used to calculate the CBLH with (or without) the limiter added. Compared to the CBLH calculated by the parcel method from microwave radiometer temperature data, more accurate retrieval of the CBLH is carried out with the limiter applied in four cloudy cases. View Full-Text
Keywords: lidar; convective boundary layer height; gradient method; idealized backscatter method; wavelet covariance transform method; clouds lidar; convective boundary layer height; gradient method; idealized backscatter method; wavelet covariance transform method; clouds
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Li, H.; Yang, Y.; Hu, X.-M.; Huang, Z.; Wang, G.; Zhang, B. Application of Convective Condensation Level Limiter in Convective Boundary Layer Height Retrieval Based on Lidar Data. Atmosphere 2017, 8, 79.

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