The convective parameterization scheme of the Korean Integrated Model (KIM) is tentatively modified to suppress grid-point storms in the Western Pacific Ocean. The KIM v3.2.11 suffers from the numerical problem that grid-point storms degrade forecasts in the tropical oceans and around the Korean Peninsula. Another convective parameterization scheme, the new Tiedtke scheme, is implemented in the KIM. The artificial storms are suppressed in the test version because the heating and drying tendencies of the new Tiedtke scheme are stronger than those of the default KIM Simplified Arakawa-Schubert (KSAS) scheme. Based on this comparison, the KSAS scheme is modified to strengthen its heating and drying tendencies by reducing the entrainment and detrainment rates. The modified KSAS scheme suppresses grid-point storms and thus decreases grid-scale precipitation in a summertime case simulation. Twenty 10-day forecasts with the default convection scheme (KSAS) and twenty forecasts with the modified scheme are conducted and compared with each other, confirming that the modified KSAS scheme successfully suppresses grid-point storms.

中文翻译：

---

抑制数值预测模型中的网格点风暴

韩国综合模型 (KIM) 的对流参数化方案经过初步修改，以抑制西太平洋的网格点风暴。KIM v3.2.11 存在网格点风暴降低热带海洋和朝鲜半岛周围预报的数值问题。在 KIM 中实现了另一种对流参数化方案，即新的 Tiedtke 方案。由于新 Tiedtke 方案的加热和干燥趋势比默认的 KIM 简化 Arakawa-Schubert (KSAS) 方案更强，因此在测试版本中抑制了人工风暴。基于这种比较，KSAS 方案经过修改，通过降低夹带和脱附率来增强其加热和干燥趋势。修改后的 KSAS 方案抑制了网格点风暴，从而减少了夏季案例模拟中的网格尺度降水。进行了 20 次默认对流方案（KSAS）的 10 天预报和 20 次修改方案的预报，并相互比较，证实修改后的 KSAS 方案成功抑制了网格点风暴。