The bulk microphysical properties and number distribution functions (N(D) ) of supercooled liquid water (SLW) and ice inside and between ubiquitous generating cells (GCs) observed over the Southern Ocean (SO) during the Southern Ocean Clouds Radiation Aerosol Transport Experimental Study (SOCRATES) measured by in situ cloud probes onboard the NCAR/NSF G‐V aircraft are compared. SLW was detected inside all GCs with an average liquid water content of 0.31 ± 0.19 g m⁻³, 11% larger than values between GCs. The N(D) of droplets (maximum dimension D  %3C 50 μm) inside and between GCs had only slight differences. For ice particles, on the other hand, the mean concentration (median mass diameter) with D  %3E 200 μm inside GCs was 2.0 ± 3.3 L⁻¹ (323 ± 263 μm), 65% (37%) larger than values outside GCs. As D increases, the percentage differences became larger (up to ~500%). The more and larger ice particles inside GCs suggest the GC updrafts provide a favorable environment for particle growth by deposition and riming and that mixing processes are less efficient at redistributing larger particles. The horizontal scale of observed GCs ranged from 200 to 600 m with a mean of 395 ± 162 m, smaller than GC widths observed in previous studies. This study expands knowledge of the microphysical properties and processes acting in GCs over a wider range of conditions than previously available.

中文翻译：

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南大洋上生成细胞的微物理特性：SOCRATES的结果

在南大洋云层辐射气溶胶运输实验期间，在南大洋（SO）上以及遍及的普遍生成细胞（GC）内部和之间的过冷液态水（SLW）和冰之间的体积微物理性质和数量分布函数（N（D））比较了NCAR / NSF G-V飞机上由原位云探测器测量的（SOCRATES）。在所有GC内部检测到SLW，其平均液态水含量为0.31±0.19 g m ^-3，比GC之间的平均值大11％。 气相色谱内部和气相色谱之间的液滴（最大尺寸D％3C 50μm）的N（D）仅有微小差异。另一方面，对于冰粒，D的平均浓度（质量中位数） GC内部200μm的％3E为2.0±3.3 L ^-1（323±263μm），比GC内部的值大65％（37％）。随着D的增加，百分比差异变大（高达〜500％）。GC内部越来越多的冰粒表明，GC上升气流通过沉积和边缘化为颗粒生长提供了良好的环境，并且混合过程在重新分配较大颗粒方面效率较低。所观察到的GC的水平范围为200至600 m，平均为395±162 m，小于先前研究中观察到的GC宽度。这项研究扩展了在比以前更广泛的条件范围内，GC中的微物理性质和过程的知识。