Improvement of Worldwide Version of System for Prediction of Environmental Emergency Dose Information (WSPEEDI), (I)
Improvement of Worldwide Version of System for Prediction of Environmental Emergency Dose Information (WSPEEDI), (I)
复制标题
环境紧急剂量信息预测系统（WSPEEDI）全球版本的改进，（一）
DOI：
10.1080/18811248.2004.9715527
复制
发表时间：
2004
影响因子：
1.2
通讯作者：
M. Chino
中科院分区：
文献类型：
--
作者：
H. Terada;A. Furuno;M. Chino
为提高核应急时放射性核素大气扩散的预测能力，引入大气动力学模式MM 5和拉格朗日粒子扩散模式GEARN-new，开发了新版本的WSPEEDI（Worldwide version of System for Prediction of Environmental Emergency Dose Information）。主要的改进是（1）在时间和空间上具有高分辨率的气象条件预报;（2）局地和区域的同时计算;（3）考虑详细的物理过程（例如湿沉降、大气边界层的垂直扩散）。新模型的性能进行了评估，在切尔诺贝利事故期间在欧洲上空的空气采样数据的137 Cs。计算的地面空气浓度与测量结果吻合良好。
The new version of WSPEEDI (Worldwide version of System for Prediction of Environmental Emergency Dose Information) is developed by introducing the combination of models, the atmospheric dynamic model MM5 and the Lagrangian particle dispersion model GEARN-new to improve the prediction capability of atmospheric dispersion of radionuclides discharged during nuclear emergency. The major improvements are (1) the forecasts of meteorological conditions with high resolution in time and space, (2) the simultaneous calculations for local and regional areas and (3) the consideration of detailed physical processes (e.g. wet deposition, vertical diffusion in atmospheric boundary layer). The performance of new models is evaluated by air sampling data on 137Cs over Europe during the Chernobyl accident. The calculated surface air concentrations showed good agreement with measurements.