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首页> 外文期刊>SOLA: Scientific Online Letters on the Atmosphere >Influence of the Temporal Resolution of Sea Surface Temperature on Winter Precipitation over the Coastal Area of the Sea of Japan
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Influence of the Temporal Resolution of Sea Surface Temperature on Winter Precipitation over the Coastal Area of the Sea of Japan

机译：海面温度对日本沿海地区冬季降水的影响

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High-frequency variations are excluded in the merged satellite and in-situ data global daily sea surface temperature (MGDSST) used in weather forecasting in Japan Meteorological Agency. We investigated the importance of temporal resolution on sea surface temperature (SST) when predicting winter precipitation using the Non-Hydrostatic Regional Climate Model. We used seven-day temporal smoothing to investigate the influence of temporal resolution on prediction. The Gaussian filter was used as spatial smoothing for comparison with the influence of spatial resolution. The influence of the temporal resolution of SST on monthly precipitation is smaller than that of spatial resolution. However, the influence of the temporal resolution on daily precipitation is comparable to that of spatial resolution. The temporal resolution of SST greatly affects precipitation, particularly in December, as the variations in SST are largest compared to the rest of the year. Furthermore, the winter monsoon promotes the effect of SST on winter precipitation. Our experiments using seven-day moving average smoothing indicates that the temporal resolution of the SST on precipitation become about 15 %/K under the winter monsoon.
机译：在日本气象局的天气预报中使用的合并卫星和原位数据全球日海表面温度（MGDSST）排除了高频变化。我们调查了在使用非静液压区域气候模型预测冬季降水时对海表面温度（SST）进行时间分辨率的重要性。我们使用七天的时间平滑来研究时间分辨率对预测的影响。高斯滤波器用作空间平滑，以与空间分辨率的影响进行比较。 SST对月度降水量的时间分辨率的影响小于空间分辨率。然而，时间分辨率对日沉淀的影响与空间分辨率相当。 SST的时间分辨率极大地影响降水，特别是12月，因为SST的变化与今年剩余的年龄最大。此外，冬季季风促进SST对冬季沉淀的影响。我们使用七天移动平均平滑的实验表明，SST的沉淀的时间分辨率变为冬季季风下的15％/ k。

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