Hudson Valley Ambient Meteorology Study

这项拨款支持哈德逊河谷的微气象学研究的基础上，实地观察和数据分析的密集计划。 感兴趣的现象包括山谷的风通道，边界层的结构和厚度，因为它在一天的过程中演变，形成和结构的低层夜间急流，和发展的大气层的强烈定向风切变。 一个目标是表征这些精细尺度特征的边界层的方式，这将是有用的理解和预测的污染物在人口稠密的地区从纽约市上游的分散。 该方法包括：（1）将该地区现有地面和高空观测站的信息整合到一个数据库中;（2）在2003年秋季的六个星期里，利用地方和国家气象设施进行特别的实地观测，这些设施包括地面气象站密集网络、专门用于测量热量和水分垂直通量的九个站、一个雷达风廓线仪，配备了无线电声学探测系统，用于测量温度廓线，一个系留气球探测系统，以及为期一个月的怀俄明州空中国王研究飞机，配备了通量测量。 该项目的主要合作者是大气信息服务的杰弗里·弗里德曼博士和亚拉巴马大学的凯文·克努普博士。 该项目的结果将有助于了解中等复杂地形的边界层过程，并为污染管理机构提供指导。

This grant supports a study of the micrometeorology of the Hudson River Valley based on an intensive program of field observations and data analysis. Phenomena of interest include the channeling of winds by the valley, the structure and thickness of the boundary layer as it evolves during the course of a day, the formation and structure of low-level nocturnal jets, and the development of atmospheric layers of strong directional wind shear. A goal is to characterize these fine-scale features of the boundary layer in ways that will be useful for understanding and predicting the dispersion of pollutants in the highly-populated region upriver from New York City. The approach consists of (1) integrating the information from existing surface and upper air observing stations in the region into a single database; (2) conducting special field observations during six weeks in the fall season of 2003 using local and national meteorological facilities including a dense network of surface meteorological stations, nine stations specially equipped for measuring the vertical flux of heat and moisture, a radar wind profiler equipped with a radio-acoustic sounding system for measuring temperature profiles, a tethered balloon sounding system, and, for one month, the Wyoming King Air research aircraft equipped for flux measurements. Major collaborators on the project are Dr. Jeffrey Freedman of Atmospheric Information Services, and Dr. Kevin Knupp of the University of Alabama. Results of the project will contribute to the understanding of boundary-layer processes in moderately complex terrain and provide guidance for pollution regulatory agencies.