Reproducing cloud microphysical and irradiance measurements using three 3D cloud generators
Reproducing cloud microphysical and irradiance measurements using three 3D cloud generators
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使用三个 3D 云生成器再现云微物理和辐照度测量结果
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
P. Pilewskie
中科院分区：
文献类型：
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作者：
K. S. Schmidt;V. Venema;F. D. Giuseppe;R. Scheirer;M. Wendisch;P. Pilewskie
使用三个云发生器，三维（3D）云场是由飞机现场测量的微物理云数据再现的。生成的云场被用作3D辐射传输模型的输入，以计算相应的向下和向上辐照度场，然后将其与空中和地面辐射测量值进行比较。从2002年9月在英国诺里奇举行的欧洲INSPECTRO现场试验中选择了一个阴天层积云场景和一个破碎积云场景。利用这些数据，三种不同的云再现技术的特点进行了评估。除了垂直剖面和直方图的测量和模拟的液态水含量和辐照度，这些数量的水平结构的功率谱和自相关长度进行检查。将3D辐射传输计算与独立像素近似进行了比较，并解释了它们在区域平均量和3D场方面的差异。版权所有© 2007皇家气象学会
Using three cloud generators, three‐dimensional (3D) cloud fields are reproduced from microphysical cloud data measured in situ by aircraft. The generated cloud fields are used as input to a 3D radiative transfer model to calculate the corresponding fields of downward and upward irradiance, which are then compared with airborne and ground‐based radiation measurements. One overcast stratocumulus scene and one broken cumulus scene were selected from the European INSPECTRO field experiment, which was held in Norwich, UK, in September 2002. With these data, the characteristics of the three different cloud reproduction techniques are assessed. Besides vertical profiles and histograms of measured and modelled liquid water content and irradiance, the horizontal structure of these quantities is examined in terms of power spectra and autocorrelation lengths. 3D radiative transfer calculations are compared with the independent pixel approximation, and their differences with respect to domain‐averaged quantities and 3D fields are interpreted. Copyright © 2007 Royal Meteorological Society