Hydro-NEXRAD: metadata computation and use

Anton Kruger; Witold F. Krajewski; Piotr Domaszczynski; James A. Smith

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Hydro-NEXRAD: metadata computation and use

机译：Hydro-NEXRAD：元数据计算和使用

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To enable the efficient use of the Hydro-NEXRAD system in hydrologic research, the authors are developing and computing a set of metadata. Vast archives of radar-centric NEXRAD data, the highly variable spatial and temporal characteristics of precipitation events, and the existence of anomalous data complicate the process of selecting subsets of the data for specific investigation. Well-defined, pre-computed, radar-centric, basin-centric and point (for a selected set of rain gauge locations) metadata offer the possibility of efficiently selecting data subsets that meet user-specified criteria. Metadata have to be computed quickly so that they do not slow down the data ingest process, but they do not have to be highly accurate. Separating rainfall from clear air conditions and heavy rainfall from light precipitation is often sufficient. In this paper, the authors discuss the technical challenges of computing metadata for the vast archives of NEXRAD data and basic data quality control incorporated into that process. Users of Hydro-NEXRAD will be able to query the database using different criteria based on the metadata or visually inspect the time series of the metadata.

机译：为了在水文学研究中有效利用Hydro-NEXRAD系统，作者正在开发和计算一组元数据。大量以雷达为中心的NEXRAD数据档案，降水事件的时空特征高度可变以及异常数据的存在使为特定调查选择数据子集的过程变得复杂。定义明确，预先计算，以雷达为中心，以盆地为中心和点（针对选定的一组雨量计位置）的元数据提供了有效选择满足用户指定标准的数据子集的可能性。必须快速计算元数据，以便它们不会减慢数据摄取过程的速度，但不必具有很高的准确性。通常将降雨与晴空条件分开，将大雨与轻雨分开。在本文中，作者讨论了为NEXRAD数据的庞大档案库计算元数据的技术挑战，以及该过程所包含的基本数据质量控制。 Hydro-NEXRAD的用户将能够基于元数据使用不同的条件来查询数据库，或目视检查元数据的时间序列。

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来源
《Journal of Hydroinformatics》 |2011年第2期|p.267-276|共10页
作者
Anton Kruger; Witold F. Krajewski; Piotr Domaszczynski; James A. Smith;
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作者单位

IIHR - Hydroscience and Engineering,The university of Iowa,Iowa City, IA 52242-1585,USA;

IIHR - Hydroscience and Engineering,The university of Iowa,Iowa City, IA 52242-1585,USA;

IIHR - Hydroscience and Engineering,The university of Iowa,Iowa City, IA 52242-1585,USA;

Civil and Environmental Engineering,Princeton University,Princeton, NJ 08544,USA;

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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种 eng
中图分类
关键词
hydro-nexrad; metadata;

机译：氢奈克斯拉德元数据;

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1. Hydro-NEXRAD: metadata computation and use [J] . Kruger Anton - Krajewski Witold F. - Domaszczynski Piotr - Smith James A. Journal of Hydroinformatics . 2011,第2期

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3. Big Metadata, Smart Metadata, and Metadata Capital: Toward Greater Synergy Between Data Science and Metadata [J] . Jane Greenberg Journal of Data and Information Science . 2017,第3期

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4. Hydro-NEXRAD Metadata Computation and Use [C] . Anton Kruger, Witold F. Krajewski, Piotr Domaszczynski, World environmental and water resources congress . 2007

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