ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 49 Issue 2 > 2023,49(2):178-187. DOI:10.7519/j.issn.1000-0526.2022.050601 Prev Next
Comparison and Analysis of Atmospheric Boundary Layer Height Retrieved by Ground-Based Remote Sensing and ERA5 Reanalysis Data
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Abstract:
By using the ground-based vertical remote sensing equipment constructed by the Beijing National Comprehensive Meteorological Observation and Test Base for the Super-Large City Observation Test, and the observation data of radiosonde, laser aerosol radar, microwave radiometer and wind profiler radar from May to August 2021, and according to different detection advantages of the equipment and the diurnal variation of the boundary layer, this paper performs the joint inversion to the observation data of laser aerosol radar, microwave radiometer, and wind profiler radar to obtain the all-weather atmospheric boundary layer height. The comparison of the height of the boundary layer obtained from the joint inversion with the height of the all-weather atmospheric boundary layer provided by the sounding data calculation and the ERA5 reanalysis data suggests that the joint inversion boundary layer height is in good agreement with the atmospheric boundary layer height provided by the ERA5 data. The laser aerosol radar is suitable for the observation of the convective boundary layer during the daytime, and the microwave radiometer is suitable for the observation of the stable boundary layer at night. The use of microwave radiometer and wind profiler radar to jointly retrieve the height of the atmospheric boundary layer can improve the performance of a single device during rainfall. The joint inversion of the atmospheric boundary layer height result and the single device inversion of the atmospheric boundary layer height are in line with the diurnal variation of the atmospheric boundary layer. The joint inversion of boundary layer height obtained in this article is compared with the height difference of the atmospheric boundary layer from the sounding data, and their standard deviation is 62 m. Compared with the average value of the atmospheric boundary layer height in a certain range provided by the ERA5 data, the joint inversion of the boundary layer height could more accurately reflect the atmospheric boundary layer height in a smaller range.
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