scholarly journals Effects of Boundary Layer Height on the Model of Ground-Level PM2.5 Concentrations from AOD: Comparison of Stable and Convective Boundary Layer Heights from Different Methods

Atmosphere ◽  
2017 ◽  
Vol 8 (12) ◽  
pp. 104 ◽  
Author(s):  
Zengliang Zang ◽  
Weiqi Wang ◽  
Xinghong Cheng ◽  
Bin Yang ◽  
Xiaobin Pan ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Convective Boundary Layer ◽  
Ground Level ◽  
Convective Boundary ◽  
Layer Height ◽  
Boundary Layer Height

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

Atmosphere ◽  
2017 ◽  
Vol 8 (12) ◽  
pp. 79 ◽  
Author(s):  
Hong Li ◽  
Yi Yang ◽  
Xiao-Ming Hu ◽  
Zhongwei Huang ◽  
Guoyin Wang ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Convective Boundary Layer ◽  
Lidar Data ◽  
Convective Boundary ◽  
Layer Height ◽  
Boundary Layer Height ◽  
Convective Condensation

scholarly journals Convective boundary-layer height estimation from combined radar and Doppler lidar observations in VORTEX-SE

2020 ◽  
Author(s):  
Joan Villalonga ◽  
Susan L. Beveridge ◽  
Marcos Paulo Araujo Da Silva ◽  
Robin L. Tanamachi ◽  
Francesc Rocadenbosch ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Convective Boundary Layer ◽  
Doppler Lidar ◽  
Convective Boundary ◽  
Height Estimation ◽  
Layer Height ◽  
Boundary Layer Height ◽  
Lidar Observations

scholarly journals Observational and Numerical Evidence of Depressed Convective Boundary Layer Heights near a Mountain Base

2008 ◽  
Vol 47 (4) ◽  
pp. 1017-1026 ◽  
Author(s):  
Stephan F. J. De Wekker
Keyword(s):  
Boundary Layer ◽  
Convective Boundary Layer ◽  
Layer Growth ◽  
Air Pollutant ◽  
Convective Boundary ◽  
Layer Height ◽  
Boundary Layer Height ◽  
Numerical Studies ◽  
Thermally Driven ◽  
Show Evidence

Abstract Recent field and numerical studies show evidence of the existence of a convective boundary layer height depression near a mountain base. This depression can have implications for air pollutant transport and concentrations in complex terrain. To investigate the mechanisms underlying this phenomenon, idealized simulations with a mesoscale numerical model are performed and combined with available observations. The idealized simulations with a single mountain ridge of various dimensions suggest that the depression evolves in time, is most pronounced in the late afternoon, and becomes larger as slope steepness increases. Observations and modeling results show that the atmosphere is heated more intensely near the mountain base than far away from the mountain base, not only inside the boundary layer but also above. The enhanced heating aloft affects boundary layer growth near the mountain base and is associated with the boundary layer height depression. An analysis of the different terms in the temperature tendency equation indicates that vertical and horizontal advection of warm air, associated with the thermally driven circulation along the mountain slope, play a role in this enhanced heating aloft.

Evaluation of retrieval methods of daytime convective boundary layer height based on lidar data

2017 ◽  
Vol 122 (8) ◽  
pp. 4578-4593 ◽  
Author(s):  
Hong Li ◽  
Yi Yang ◽  
Xiao-Ming Hu ◽  
Zhongwei Huang ◽  
Guoyin Wang ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Convective Boundary Layer ◽  
Lidar Data ◽  
Convective Boundary ◽  
Layer Height ◽  
Boundary Layer Height

scholarly journals Relationship analysis of PM<sub>2.5</sub> and boundary layer height using an aerosol and turbulence detection lidar

2019 ◽  
Vol 12 (6) ◽  
pp. 3303-3315 ◽  
Author(s):  
Chong Wang ◽  
Mingjiao Jia ◽  
Haiyun Xia ◽  
Yunbin Wu ◽  
Tianwen Wei ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Weather Forecasting ◽  
Direct Detection ◽  
Vertical Wind ◽  
Precipitation Event ◽  
Cloud Base ◽  
Convective Boundary ◽  
Layer Height ◽  
Boundary Layer Height ◽  
Relationship Analysis

Abstract. The atmospheric boundary layer height (BLH) is a key parameter in weather forecasting and air quality prediction. To investigate the relationship between BLH and air pollution under different conditions, a compact micro-pulse lidar integrating both direct-detection lidar (DDL) and coherent Doppler wind lidar (CDWL) has been built. This hybrid lidar is operated at 1.5 µm, which is eye-safe and made of all-fibre components. The BLH can be determined from aerosol density and vertical wind independently. During a 45 h continuous observation in June 2018, the stable boundary layer, residual layer and convective boundary layer are identified. The fine structure of the aerosol layers, drizzles and vertical wind near the cloud base are also detected. In comparison, the standard deviation between BLH values derived from DDL and CDWL is 0.06 km, indicating the accuracy of this work. The retrieved convective BLH is a little higher than that from ERA5 reanalysis due to different retrieval methods. Correlation between different BLH and PM2.5 is strongly negative before a precipitation event and becomes much weaker after the precipitation. Different relationships between PM2.5 and BLH may result from different BLH retrieval methods, pollutant sources and meteorological conditions.

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