| VARIATION CHARACTERISTICS OF THE PLANETARY BOUNDARY LAYER HEIGHT AND ITS RELATIONSHIP WITH PM2.5 CONCENTRATION OVER CHINA |
| |
| 作者姓名： | 王寅钧 徐祥德 赵 阳 王敏仲 |
| |
| 摘 要： | The planetary boundary layer height (PBLH) was calculated using the radiosonde sounding data, including 120 L-band operational sites and 8 GPS sites in China. The diurnal and seasonal variations of PBLH were analyzed using radiosonde sounding (OBS-PBLH) and ERA data (ERA-PBLH). Based on comparison and error analyses, we discussed the main error sources in these data. The frequency distributions of PBLH variations under different regimes (the convective boundary layer, the neutral residual layer, and the stable boundary layer) can be well fitted by a Gamma distribution and the shape parameter k and scale parameter s values were obtained for different regions of China. The variation characteristics of PBLH were found in summer under these three regimes for different regions. The relationships between PBLH and PM2.5 concentration generally follow a power law under very low or no precipitation conditions in the region of Beijing, Tianjin and Hebei in summer. The results usually deviated from this power distribution only under strong precipitation or high relative humidity conditions because of the effects of hygroscopic growth of aerosols or wet deposition. The OBS-PBLH provided a reasonable spatial distribution relative to ERA-PBLH. This indicates that OBS-PBLH has the potential for identifying the variation of PM2.5 concentration.
|
| 关 键 词： | L-band and GPS sounding planetary boundary layer height PM2.5 concentration |
| 修稿时间： | 2018/6/25 0:00:00 |
VARIATION CHARACTERISTICS OF THE PLANETARY BOUNDARY LAYER HEIGHT AND ITS RELATIONSHIP WITH PM2.5 CONCENTRATION OVER CHINA |
| |
| WANG Yin-jun,XU Xiang-de,ZHAO Yang and WANG Min-zhong.VARIATION CHARACTERISTICS OF THE PLANETARY BOUNDARY LAYER HEIGHT AND ITS RELATIONSHIP WITH PM2.5 CONCENTRATION OVER CHINA[J].Journal of Tropical Meteorology,2018,24(3):385-394. |
| |
| Authors: | WANG Yin-jun XU Xiang-de ZHAO Yang and WANG Min-zhong |
| |
| Abstract: | The planetary boundary layer height(PBLH) was calculated using the radiosonde sounding data, including120 L-band operational sites and 8 GPS sites in China. The diurnal and seasonal variations of PBLH were analyzed using radiosonde sounding(OBS-PBLH) and ERA data(ERA-PBLH). Based on comparison and error analyses, we discussed the main error sources in these data. The frequency distributions of PBLH variations under different regimes(the convective boundary layer, the neutral residual layer, and the stable boundary layer) can be well fitted by a Gamma distribution and the shape parameter k and scale parameter s values were obtained for different regions of China. The variation characteristics of PBLH were found in summer under these three regimes for different regions. The relationships between PBLH and PM_(2.5) concentration generally follow a power law under very low or no precipitation conditions in the region of Beijing, Tianjin and Hebei in summer. The results usually deviated from this power distribution only under strong precipitation or high relative humidity conditions because of the effects of hygroscopic growth of aerosols or wet deposition. The OBS-PBLH provided a reasonable spatial distribution relative to ERA-PBLH.This indicates that OBS-PBLH has the potential for identifying the variation of PM_(2.5) concentration. |
| |
| Keywords: | L-band and GPS sounding planetary boundary layer height PM2 5 concentration |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《热带气象学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《热带气象学报(英文版)》下载免费的PDF全文 |
