• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the American Water Resources Association >THE WATERSHED DEPOSITION TOOL: A TOOL FOR INCORPORATING ATMOSPHERIC DEPOSITION IN WATER-QUALITY ANALYSES
【24h】

THE WATERSHED DEPOSITION TOOL: A TOOL FOR INCORPORATING ATMOSPHERIC DEPOSITION IN WATER-QUALITY ANALYSES

机译：流水沉积工具：一种在水质分析中纳入大气沉积的工具

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A tool for providing the linkage between air and water-quality modeling needed for determining the Total Maximum Daily Load (TMDL) and for analyzing related nonpoint-source impacts on watersheds has been developed. Using gridded output of atmospheric deposition from the Community Multiscale Air Quality (CMAQ) model, the Watershed Deposition Tool (WDT) calculates average per unit area and total deposition to selected watersheds and subwatersheds. CMAQ estimates the wet and dry deposition for all of its gaseous and particulate chemical species, including ozone, sulfur species, nitrogen species, secondary organic aerosols, and hazardous air pollutants at grid scale sizes ranging from 4 to 36 km. An overview of the CMAQ model is provided. The somewhat specialized format of the CMAQ files is not easily imported into standard spatial analysis tools. The WDT provides a graphical user interface that allows users to visualize CMAQ gridded data and perform further analyses on selected watersheds or simply convert CMAQ gridded data to a shapefile for use in other programs. Shapefiles for the 8-digit (cataloging unit) hydrologic unit code polygons for the United States are provided with the WDT; however, other user-supplied closed polygons may be used. An example application of the WDT for assessing the contributions of different source categories to deposition estimates, the contributions of wet and dry deposition to total deposition, and the potential reductions in total nitrogen deposition to the Albemarle-Pamlico basin stemming from future air emissions reductions is used to illustrate the WDT capabilities.
机译：已经开发了一种工具，该工具可提供确定总最大日负荷（TMDL）以及分析相关非点源对流域的影响所需的空气和水质模型之间的联系。使用来自社区多尺度空气质量（CMAQ）模型的大气沉积物的网格化输出，分水岭沉积工具（WDT）计算选定区域和子分水岭的平均单位面积和总沉积量的平均值。 CMAQ估计其所有气态和颗粒化学物质的干湿沉降，包括臭氧，硫，氮，次生有机气溶胶和危险空气污染物，其网格规模为4至36 km。提供了CMAQ模型的概述。 CMAQ文件的某种专门格式很难导入到标准空间分析工具中。 WDT提供了一个图形用户界面，该界面允许用户可视化CMAQ网格化数据并在选定的分水岭上进行进一步分析，或者简单地将CMAQ网格化数据转换为shapefile以供其他程序使用。 WDT提供了用于美国的8位（编目单位）水文单位代码多边形的Shapefile。但是，可以使用其他用户提供的封闭多边形。 WDT在评估不同来源类别对沉积估算的贡献，湿法和干法沉积对总沉积的贡献以及由于未来空气排放量减少而导致的阿尔伯马尔-帕姆利科盆地总氮沉积潜在减少的示例应用是：用于说明WDT功能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号