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RAINC和RAINNC的区别

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发表于 2019-4-19 14:08:47 | 显示全部楼层 |阅读模式

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Some of these questions have no simple answer. RAINC is produced by the cumulus parameterization. There are several cumulus schemes available in WRF, so you need to know which one is being used. Each scheme is described in one or more papers, but these may be difficult to understand for those not familiar with cloud dynamics. RAINNC is produced by the cloud microphysics scheme and any other processes that generate precipitation on the grid scale. On scales > 10 km, this is mostly from stratiform clouds. At high resolution < 5 km, grid scale may resolve some cumulus clouds and their precipitation will be included in RAINNC. For domains with resolution < 2-5 km, you should not use any cumulus scheme because most or all convection will be resolved at the grid scale.
个人理解:1、累计降水量为RAINC+RAINNC;2、RAINC是积云降水,是由积云参数化方案产生的。RAINNC是格点降水。3、在分辨率大于10km时,RAINNC基本表示层云降水;在分辨率2-5km时,可以不用积云参数化方案,RAINC全部包含在RAINNC中.RAINNC应该为0。
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