| GRAPES-TCM台风模式的新涡旋初始化方案——原理和实施 |
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| 引用本文： | 许晓林,LIUQingfu,陈葆德,王晓峰.GRAPES-TCM台风模式的新涡旋初始化方案——原理和实施[J].大气科学,2019,43(5):975-989. |
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| 作者姓名： | 许晓林 LIUQingfu 陈葆德 王晓峰 |
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| 作者单位： | 上海市生态气象和卫星遥感中心,上海,200030;美国国家海洋和大气管理局(NOAA)国家天气局(NWS)国家环境预报中心(NCEP)环境模式中心(EMC),美国马里兰大学公园市20740;中国气象局上海台风研究所,上海,200030 |
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| 基金项目： | 公益性行业 气象 2012BAC21B02上海市科学技术委员会科研计划项目17DZ1205300,上海市国际科技合作基金项目科研计划项目17230741300,公益性行业（气象）科研专项项目GYHY201206006,国家科技支撑计划项目2012BAC21B02 |
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| 摘 要： | 在更新的GRAPES-TCM (Global/Regional Assimilation and Prediction System-Tropical Cyclone Model)台风模式架构下,引进与发展了一个新的涡旋初始化方案。该方案对台风涡旋进行极小化订正,减少了人为因素对台风涡旋结构的影响,所产生的涡旋满足特定的动力与热力平衡,且保持了与模式动力及热力的一致性。新的涡旋初始化方案能更精细地体现初始台风的强度与结构,强度更接近于观测,结构更为合理。试验表明其可以有效地改善台风路径与强度的预报精度。
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| 关 键 词： | 涡旋初始化 热带气旋 GRAPES模式 |
| 收稿时间： | 2018/1/14 0:00:00 |
Vortex Initialization Scheme in GRAPES-TCM Model: |
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| XU Xiaolin,LIU Qingfu,CHEN Baode.Vortex Initialization Scheme in GRAPES-TCM Model:[J].Chinese Journal of Atmospheric Sciences,2019,43(5):975-989. |
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| Authors: | XU Xiaolin LIU Qingfu CHEN Baode |
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| Institution: | 1.Center of Ecological Meteorology and Satellite Remote Sensing, Shanghai 200030;2.Environmental Modeling Center (EMC), National Oceanic and Atmospheric Administration (NOAA)/National Weather Service (NWS)/National Centers for Environmental Prediction (NCEP), College Park, Maryland, USA 20740;3.Shanghai Typhoon Institute of China Meteorological Administration, Shanghai 200030 |
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| Abstract: | A vortex initialization scheme has been developed and implemented in a newly updated version of GRAPES-TCM (Global/Regional Assimilation and Prediction System-Tropical Cyclone Model) by following the principle of HWRF (Hurricane Weather Research and Forecasting Model), in which correction for the vortex is as small as possible. The new scheme applies a small correction in the storm vortex to maintain a certain consistency with the model. Arbitrariness in the modification of the vortex is largely reduced, and the resultant vortex holds related dynamical and thermodynamical balance. Results indicate that the initial vortex from the new scheme possesses an intensity that is considerably closer to the observed intensity and increased structural detail. Hindcast shows that the new vortex scheme can effectively improve the accuracy of typhoon tracking and intensity forecasting. |
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| Keywords: | Vortex initialization Tropical cyclone GRAPES model |
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