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| Out-of-Cycle Update of the US/UK World Magnetic Model for 2015-2020 | |
| 出版日期 | 2019 |
| 出版者 | National Centers for Environmental Information, NOAA |
| 英文摘要 | In early 2018, the World Magnetic Model 2015-2020 (WMM2015) was predicted to exceed its performance specification error tolerances by the end of 2018 or early 2019. Specifically, the grid variation root-mean-square error was about to exceed the 1 degree specification (MIL-PRF89500A) due to fast fluid flows in the Earth鈥檚 outer core, especially in the North polar region. An out-of-cycle update of the WMM2015 was developed and released in early 2019 (WMM2015v2) to address this performance degradation. There was a pre-release in September 2018 and this technical note confirms the information provided in that pre-release. It also provides a description of the new model (section 1), how it was produced (section 2) and its uncertainties (section 3). How to Use this Note: A complete description of the WMM2015 is provided in the WMM2015 Technical Report (Chulliat et al., 2015; WMM2015-TR hereafter (http://nora.nerc.ac.uk/id/eprint/510709/)). This new technical note should be seen as an addendum to the WMM2015-TR. It is organized in the same manner as the WMM2015-TR in order to facilitate the retrieval of information by users. It only includes information that is new for the out-of-cycle update, hereafter referred to as WMM2015v2. |
| DOI | 10.25921/xhr3-0t19 |
| URL | http://nora.nerc.ac.uk/id/eprint/522167/1/Chulliat%20et%20al%202019%20-%20Out-of-cycle%20update%20of%20the%20USUK%20World%20Magnetic%20Model%20for%202015-2020.pdf |
| 国家 | 英国 |
| 语种 | 英语 |
| 来源机构 | 英国自然环境研究理事会 |
| 文献类型 | 科技报告 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/86194 |
| 推荐引用方式 GB/T 7714 | . Out-of-Cycle Update of the US/UK World Magnetic Model for 2015-2020:National Centers for Environmental Information, NOAA,2019. |
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| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| 522167.pdf（609KB） | 科技报告 | 开放获取 | CC BY-NC-SA | 浏览 下载 | ||
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