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Precipitable water as a predictor of LCL height

机译：可沉淀的水可预测LCL高度

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摘要

Based on the precipitable water observations easily available from in situ and remote sensing sensors, a simple approach to define the lifting condensation level (LCL) is proposed in this study. High-resolution radiosonde and microwave radiometer observations over peninsular Indian region during the Cloud Aerosol Interaction and Precipitation Enhancement Experiment Integrated Ground Observational Campaign (CAIPEEX-IGOC) during the monsoon season of 2011 are used to illustrate the unique relationship. The inferences illustrate a linear relationship between the precipitable water (PW) and the LCL temperature. This relationship is especially valuable because PW is easily available as a derived parameter from various remote sensing and ground-based observations. Thus, it could be used to estimate the LCL height and perhaps also the boundary layer height. LCL height and PW correlations are established from historical radiosonde data (1984-2012). This finding could be used to illustrate the boundary layer-cloud interactions during the monsoon and is important for parameterization of boundary layer clouds in numerical models. The relationships are illustrated to be robust and seem promising to get reasonable estimates of the LCL height over other locations as well using satellite observations of PW.
机译：基于可从现场和遥感传感器轻松获得的可降水量水的观测结果，本研究提出了一种简单的方法来定义提升凝结水位（LCL）。 2011年季风季节期间，印度气溶胶相互作用和降水增强实验综合地面观测运动（CAIPEEX-IGOC）在印度半岛上进行的高分辨率探空仪和微波辐射计观测被用来说明这种独特的关系。这些推论说明了可沉淀水（PW）与LCL温度之间的线性关系。这种关系特别有价值，因为PW可以很容易地用作各种遥感和地面观测的派生参数。因此，它可以用来估计LCL高度，也可以用来估计边界层高度。 LCL高度和PW的相关性是根据无线电探空仪的历史数据（1984-2012）建立的。这一发现可用于说明季风期间边界层-云层的相互作用，对于数值模型中边界层云的参数化非常重要。这些关系被说明是稳健的，并且似乎有望通过卫星对PW的观测获得其他位置的LCL高度的合理估计。

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  • 来源
    《Theoretical and applied climatology》 |2017年第2期|467-476|共10页
  • 作者

    Murugavel P.; Malap N.; Balaji B.; Mehajan R. K.; Prabha T. V.;

  • 作者单位

    Indian Inst Trop Meteorol, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India;

    Indian Inst Trop Meteorol, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India|Savitribai Phule Pune Univ, Dept Atmospher & Space Sci, Pune, Maharashtra, India;

    Indian Inst Trop Meteorol, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India;

    Sci & Engn Res Board, New Delhi, India;

    Indian Inst Trop Meteorol, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India;

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