Cloud optical thickness, cloud particle effective radius, and effective snow grain size retrieved from airborne spectral reflectivity measurements during VERDI 2012 over the Beaufort Sea

The data contain time series of cloud optical thickness, cloud particle effective radius, and effective snow grain size retrieved from airborne spectral reflectivity measurements during the Vertical Distribution of Ice in Arctic Clouds (VERDI) campaign 2012 over the Beaufort Sea. Along the flight track of the Polar 5 aircraft operated by the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), the cloud and snow properties were derived simultaneously by applying a trispectral retrieval algorithm using reflectivity ratios as described by Ehrlich et al. (2017). Corresponding spectral nadir reflectivities measured by the spectral modular airborne radiation measurement system (SMART) at 645 nm, 860 nm, 1040 nm, 1655 nm, and 2100 nm wavelength are provided. Satellite observations of the moderate-resolution imaging spectroradiometer (MODIS) cloud product Collection 6 were extracted along the flight track.本数据集包含2012年北极云层冰垂直分布（Vertical Distribution of Ice in Arctic Clouds, VERDI）科考航次期间，在波弗特海空域通过机载光谱反射率测量反演得到的云光学厚度（cloud optical thickness）、云粒子有效半径（cloud particle effective radius）以及有效雪粒粒径（effective snow grain size）时间序列数据。由阿尔弗雷德·魏格纳研究所、亥姆霍兹极地与海洋研究中心（Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, AWI）运营的极地5号（Polar 5）飞机的飞行轨迹沿线，研究团队采用Ehrlich等人（2017）所述的基于反射率比值的三光谱反演算法，同步反演得到了云与雪的相关属性参数。本数据集同时提供了由模块化机载光谱辐射测量系统（spectral modular airborne radiation measurement system, SMART）在645 nm、860 nm、1040 nm、1655 nm及2100 nm波长处测得的对应天底光谱反射率数据。此外，本数据集还包含沿该飞行轨迹提取的中分辨率成像光谱仪（moderate-resolution imaging spectroradiometer, MODIS）云产品第6版（Collection 6）的卫星观测数据。