Expanded Capabilities for the Ionospheric Forecast Model
Expanded Capabilities for the Ionospheric Forecast Model
复制标题
电离层预报模型的扩展功能
DOI：
10.21236/ada341230
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发表时间：
1997
影响因子：
--
通讯作者：
J. Eccles
中科院分区：
文献类型：
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作者：
R. Schunk;J. Sojka;J. Eccles
摘要：电离层预报模型（IFM）是一个计算效率高、用户友好的全球电离层预报模型，是为空间预报中心的业务使用而开发的。该模式提供了在E和F地区海拔（90-1000 km） 12小时内分子（NO+、O2+、N2+）和O+密度的全球分布以及电子和离子温度的预报。该模型还包含一个预测F区氢离子密度的简单算法。IFM是独立的，通过指定几个简单的参数和地球物理指标来运行。在这份合同的支持下，IFM的能力得到了扩展，以提高其预测的可靠性。这包括将模式扩展到1600公里，并开发Kp预报算法，这是获得随时间变化的对流和降水模式预报所必需的。对IFM进行了广泛的验证，包括气候学和风暴模拟。此外，对IFM进行了改进，使其能够与热层预报模式（TFM）耦合。作为这项工作的一部分，我们开发了必要的耦合算法。最后，我们开始了全局发电机模型的构建。
Abstract : The Ionospheric Forecast Model (IFM) is a computationally efficient, user friendly, model of the global ionosphere that was developed for operational use at the Space Forecast Center. The model provides 12 hours forecasts for the global distributions of the molecular (NO+, O2+, N2+) and O+ densities, and the electron and ion temperatures, at E and F region altitudes (90-1000 km). The model also contains a simple algorithm for predicting H+ densities in the F region. The IFM is self-contained and is run by specifying a few simple parameters and geophysical indices. With support from this contract, the capabilities of the IFM were expanded in order to improve the reliability of its predictions. This involved the extension of the model to 1600 km, and the development of a Kp forecast algorithm, which was needed in order to obtain forecasts for the time-dependent convection and precipitation patterns. An extensive validation of the IFM was also conducted, including both climatology and storm simulations. In addition, the IFM was modified so that it could be coupled to the Thermospheric Forecast Model (TFM). As part of this effort, we developed the necessary coupling algorithms. Finally, we initiated the construction of a global dynamo model.