求翻译：对应于三个地面加热试验中冬季华北及内蒙地区的降水减少，模式中华北区域地面风场具有明显的负风应力旋度，而在850hPa 以及500hPa 的高度上也具有向下的垂直风。而地面的这种旋度异常以及各个高度场上的垂直风异常都不利于局地的降水是什么意思？

Reduced precipitation corresponds to the trial of three surface heating in winter in North China and Inner Mongolia, North China region, the surface wind has a significant negative wind stress curl pattern, and also has a downward vertical wind 850hpa and 500hpa height. Ground this curl anomalies an

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正在翻译，请等待...

Corresponding to the three ground heating test of winter precipitation in North China and Inner Mongolia region to reduce, mode of surface wind field in North China region has an obvious negative wind stress curl, 850hPa, and vertical wind 500hPa height also has down. This curl exception on the grou

正在翻译，请等待...