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首页> 外文期刊>Journal of Earth System Science >Impact of horizontal resolution on prediction of tropical cyclones over Bay of Bengal using a regional weather prediction model
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Impact of horizontal resolution on prediction of tropical cyclones over Bay of Bengal using a regional weather prediction model

机译：使用区域天气预报模型的水平分辨率对孟加拉湾热带气旋预报的影响

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摘要

The present study is carried out to examine the performance of a regional atmospheric model in forecasting tropical cyclones over the Bay of Bengal and its sensitivity to horizontal resolution. Two cyclones, which formed over the Bay of Bengal during the years 1995 and 1997, are simulated using a regional weather prediction model with two horizontal resolutions of 165 km and 55 km. The model is found to perform reasonably well towards simulation of the storms. The structure, intensity and track of the cyclones are found to be better simulated by finer resolution of the model as compared to the coarse resolution. Rainfall amount and its distribution are also found to be sensitive to the model horizontal resolution. Other important fields, viz., vertical velocity, horizontal divergence and horizontal moisture flux are also found to be sensitive to model horizontal resolution and are better simulated by the model with finer horizontal grids. Keywords Tropical cyclone - resolution - track - regional model
机译：进行本研究以检验区域大气模型在预测孟加拉湾上空热带气旋及其对水平分辨率的敏感性方面的性能。使用区域天气预报模型模拟了两个在1995年和1997年期间在孟加拉湾上空形成的气旋，两个水平分辨率分别为165 km和55 km。发现该模型在模拟风暴方面表现良好。与粗分辨率相比，通过更精细的模型分辨率，可以更好地模拟旋风分离器的结构，强度和轨道。还发现降雨量及其分布对模型的水平分辨率敏感。还发现其他重要字段，即垂直速度，水平散度和水平水分通量对模型的水平分辨率敏感，并且可以通过具有更精细水平网格的模型更好地模拟。关键词热带气旋分辨率轨道区域模型

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