GLOSSIS: Global storm surge forecasting and information system
GLOSSIS: Global storm surge forecasting and information system
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GLOSSIS：全球风暴潮预报和信息系统
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发表时间：
2015
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通讯作者：
L. Buckman
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作者：
M. Verlaan;S. D. Kleermaeker;L. Buckman
风暴潮造成的海岸淹没是全球沿海城市面临的主要风险之一。由于人口增长、海平面上升和地面沉降，这些风险预计在今后几十年将进一步增加。为了协助全球预警，开发了一个具有全球风暴潮模型的全球业务预报系统。全球模型使用非结构化球形网格，比开阔海洋（50公里分辨率）更详细地表示沿海地区（约5公里分辨率），总共有近100万个计算单元。新开发的高效Delft 3D灵活网格代码仅在一个12核Intel E5计算节点上即可在30分钟内生成10天的预测。该模型进行了校准和验证约300个沿海验潮站和卫星高度计。该模式的主要目标是为嵌套的更详细的区域模式提供边界条件，并研究气候变化的影响。全球风暴潮预报和信息系统（GLOSSIS）是使用Delft-FEWS开发的，Delft-FEWS是经过验证的以真实的实时数据为中心的软件基础设施，用于业务水管理和预报。该系统管理所有数据流，例如实时观测和模型的全球气象强迫，以及调度模型运行和结果可视化。模型输出是为大约16，000个海岸段制作的，这些海岸段或多或少具有相同的特征（DIVA）。这可以与从海委会海平面站监测设施进口的全世界验潮仪的数百个实时观测结果进行比较。该系统为目前缺乏任何预报能力的地区提供实时水位和风暴潮预报。目前，该模型每天运行4次，以生成全球沿海风暴潮的最新预报。
Coastal inundation by storm surges is one of the main risks for coastal cities worldwide. These risks are expected to further increase in the next few decades due to population growth, sea level rise and land subsidence. To assist worldwide advance warning, a global operational forecasting system with a global storm surge model is developed. The global model uses an unstructured spherical grid, to represent coastal areas in more detail (around 5 km resolution) than open oceans (50 km resolution), with in total nearly 1 million computation cells. The newly developed highly efficient Delft3D flexible mesh code produces a 10 day forecast within 30 minutes on just one 12core Intel E5 computational node. The model was calibrated and validated against about 300 coastal tide gauges and satellite altimeter. The main goals of the model are to provide boundary conditions for nested more detailed regional models and to study the impact of climate change. The Global Storm Surge Forecasting and Information System (GLOSSIS) is developed with Delft-FEWS, the proven real time data centric software infrastructure for operational water management and forecasting. The system manages all data flows, such as real-time observations and global meteorological forcing of the model, as well as scheduling model runs and visualisation of the results. Model output is produced for about 16,000 coastal segments with more or less homogeneous characteristics (DIVA). This can be compared against hundreds of real-time observations from tide-gauges worldwide, imported from the IOC sea level station monitoring facility. The system provides real-time operational water level and storm-surge forecasts in areas that currently lack any forecasting capability. Currently, the model is running 4 times a day to produce update forecasts of coastal storm surges worldwide.