Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL079953 |
Minimizing Common Errors When Projecting Geospatial Data Onto a vortex-Centered Space | |
Ahern, Kyle; Cowan, Levi | |
2018-11-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
![]() |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:21页码:12032-12039 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The problem of transforming geospatial data into polar coordinates, a common task in the analysis of data centered on geophysical phenomena, is examined. The azimuthal equidistant projection is shown to be the optimal transform for this purpose. A mathematical and observational analysis of the errors incurred by using a common alternative transform is conducted and reveals that such errors can be significant at radii as small as a few hundred kilometers. When evaluating observed 200-hPa wind fields near Atlantic tropical cyclones (TCs), median azimuthal maximum errors in total and radial wind range up to 10% within 700 km of the TC and up to 50% within 1,600 km of the TC. Errors are shown to depend strongly on the statistical characteristics of the data set and increase nonlinearly with latitude and radius. Plain Language Summary Many analyses of Earth-relative data benefit from transforming the data into different coordinate systems. For vortices, such as hurricanes, a polar coordinate system is often desirable or necessary. While converting data to polar coordinates is common, the process by which this is done can contain errors that are detrimental to any analysis performed with the data. In order to provide a reference for the magnitude of this problem, we evaluate how large these errors can be for theoretical and real-world cases when using an approach commonly employed in contemporary studies. Results indicate that these errors can be substantial at radii as small as a few hundred kilometers, regardless of location on Earth. We show that utilizing a transform called the azimuthal equidistant projection will minimize these errors, so we recommend its use in vortex-relative analyses. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451832600057 |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26736 |
专题 | 气候变化 |
作者单位 | Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA |
推荐引用方式 GB/T 7714 | Ahern, Kyle,Cowan, Levi. Minimizing Common Errors When Projecting Geospatial Data Onto a vortex-Centered Space[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(21):12032-12039. |
APA | Ahern, Kyle,&Cowan, Levi.(2018).Minimizing Common Errors When Projecting Geospatial Data Onto a vortex-Centered Space.GEOPHYSICAL RESEARCH LETTERS,45(21),12032-12039. |
MLA | Ahern, Kyle,et al."Minimizing Common Errors When Projecting Geospatial Data Onto a vortex-Centered Space".GEOPHYSICAL RESEARCH LETTERS 45.21(2018):12032-12039. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Ahern, Kyle]的文章 |
[Cowan, Levi]的文章 |
百度学术 |
百度学术中相似的文章 |
[Ahern, Kyle]的文章 |
[Cowan, Levi]的文章 |
必应学术 |
必应学术中相似的文章 |
[Ahern, Kyle]的文章 |
[Cowan, Levi]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论