The temporal variability of the planetary boundary layer height (PBLH) over Mahabaleshwar was studied for a period of 1 year from 1 December 2015 to 30 November 2016 using microwave radiometer (MWR) observations. The PBLH over Mahabaleshwar was found to be the highest during the pre-monsoon (March–May) season and lowest during the winter (December–February) season. The seasonal mean of PBLH was estimated to be 339±88 m during winter, 485±70 m during pre-monsoon, 99±153 m during monsoon, and 438±24 m during post-monsoon season. Frequency distribution analysis of PBLH during pre-monsoon season revealed that the formation of turbulence internal boundary layer (TIBL) is evident. In contrast, cold and moist air mass during the monsoon season enhances the wind shear with lower buoyancy term which results in lowering of PBLH. The comparison of PBLH between MWR and radiosonde observations shows a good correlation (r² = 0.66, p=0.001). The growth rate was observed to be 388 m/h during pre-monsoon, 206 m/h during winter, 57 m/h during monsoon, and 167 m/h during post-monsoon season. The seasonal mean concentration of PM_2.5 was found to be 42.3±4.6 μg/m³during winter, 33.4±8.7 μg/m³ during pre-monsoon, 6.6±2.2 μg/m³ during monsoon, and 26.1±1.7 μg/m³during post-monsoon season. The effect of higher loading of scattering-type aerosol (dust particle) was also investigated as a case study. The analysis reveals the inverse relationship between the PBL height variability and the particulate loading indicating the importance of aerosol direct effect. Analysis of the ventilation coefficient (Vc) revealed that the dissipation potential was higher (1736 m²/s) during pre-monsoon season as compared to (1191 m²/s, 455m²/s, and 1580 m²/s) winter, monsoon, and post-monsoon seasons.

使用微波辐射计（MWR）观测研究了Mahabaleshwar上行星边界层高度（PBLH）在2015年12月1日至2016年11月30日之间的时间变化，为期1年。在Mahabaleshwar上的PBLH被发现在季风前（3月至5月）季节最高，而在冬季（12月至2月）季节最低。据估计，PBLH的季节平均数在冬季为339±88 m，在季风之前为485±70 m，在季风期间为99±153 m，在季风后季节为438±24 m。季风前季节的PBLH频率分布分析表明，湍流内部边界层（TIBL）的形成是明显的。相反，季风季节的冷湿气团增加了风切变，降低了浮力，导致PBLH降低。r ²＝ 0.66，p＝ 0.001）。季风前的增长率为388 m / h，冬季为206 m / h，季风为57 m / h，季风后为167 m / h。PM的季平均浓度_2.5被发现是42.3±4.6微克/米³冬季期间，33.4±8.7微克/米³的预季风期间，6.6±2.2微克/米³季风期间，和26.1±1.7微克/立方米³在季风季节之后。作为案例研究，还研究了较高含量的散射型气溶胶（粉尘颗粒）的影响。分析揭示了PBL高度变异性与颗粒负荷之间的反比关系，表明了气溶胶直接作用的重要性。通风系数（Vc）的分析表明，与冬季的（1191 m ² / s，455m ² / s和1580 m ² / s）相比，季风前季节的耗散潜力更高（1736 m ² / s）。 ，季风和季风后季节。