Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2021.105483 |
A Comprehensive Evaluation of Planetary Boundary Layer Height Retrieval Techniques using Lidar Data under Different Pollution scenarios | |
Futing Wang, Ting Yang, Zifa Wang, Xi Chen, ... Jianping Guo | |
2021-01-23 | |
发表期刊 | Atmospheric Research |
出版年 | 2021 |
英文摘要 | Lidar is a powerful active remote sensing technique to monitor the planetary boundary layer (PBL), and there have already been many algorithms to retrieve the planetary boundary layer height (PBLH) using aerosol lidars. However, the algorithm suitable for all atmospheric conditions doesn't exist. This study evaluates the capability of nine lidar algorithms under different pollution scenarios in terms of the instantaneous performance and the diurnal evolution, which are derived from classical theories and expressed as GM, LGM, CRGM, IPM, VAR, VGM, WCT, WCTD, and POLARIS in this paper. Based on the nine algorithms, the continuous PBLHs are obtained from the observation dataset of a Beijing urban site in 2017. In order to verify the lidar results, the statical comparison analysis with radiosonde is also presented. On the premise of the inversion hypothesis, such as sufficient mixing in the PBL, the consistency of lidar results was the best, with the difference being not more than 200 m. And what's different from our cognition is that the concentration of pollutants near the ground under the light pollution condition makes the lidar results tend to be consistent. In fact, LGM prefers to get higher PBLHs because of filtering the information near the ground, whereas POLARIS is apt to underestimate unless the actual morphology can be captured by the depolarization ratio. VAR and IPM are more vulnerable to the conspicuous stratification. GM, CRGM, and WCTD have better consistency with radiosonde and capture the evolution characteristic no matter in clean or polluted days. Compared with the clean days, PBLH from lidar algorithms under the polluted condition reduced about 500 m overall, as well as the standard deviation. Generally speaking, the comprehensive comparison provides a reference to choose the proper lidar algorithm when retrieving the PBLH. GM is appropriate for the detection of clean days, while CRGM is robust for polluted days. WCTD is more suitable for the judgment of PBLH in the morning and evening and will underestimate at noon. As to the situation with cloud, WCTD is also the best choice. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/312261 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Futing Wang, Ting Yang, Zifa Wang, Xi Chen, ... Jianping Guo. A Comprehensive Evaluation of Planetary Boundary Layer Height Retrieval Techniques using Lidar Data under Different Pollution scenarios[J]. Atmospheric Research,2021. |
APA | Futing Wang, Ting Yang, Zifa Wang, Xi Chen, ... Jianping Guo.(2021).A Comprehensive Evaluation of Planetary Boundary Layer Height Retrieval Techniques using Lidar Data under Different Pollution scenarios.Atmospheric Research. |
MLA | Futing Wang, Ting Yang, Zifa Wang, Xi Chen, ... Jianping Guo."A Comprehensive Evaluation of Planetary Boundary Layer Height Retrieval Techniques using Lidar Data under Different Pollution scenarios".Atmospheric Research (2021). |
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