Hourly dust measurements on the high plains of the Llano Estacado

Hourly values of ambient dust concentration (TSP) were measured on the roof of the USDA-ARS Plant Stress and Water Conservation (PSWC) Laboratory located at 3810 4th Street in Lubbock, Texas (33.593508 -101.897688). Measurements were obtained continuously from 1 January 2003 to 8 June 2008, a period of more than five years and four months. The sampling system consisted of a model 1400a TEOM (tapered element oscillating microbalance) manufactured by Rupprecht & Patashnick. No cyclone pre-separators or impactors were installed in the sampler inlet so that the system measured total suspended particulates (TSP). The system was mounted on a raised platform such that the sampling inlet was 2.2 m above the flat roof of the building and 7.0 m above the surrounding ground level. Dust is primarily generated in the highly erodible cropland outside of the city limits of Lubbock and transported across the city by winds blowing from various directions. A portion of this dust is blown across the PSWC Lab where ambient dust concentration was measured and recorded. An attempt was made to obtain a continuous record, however, mechanical failures led to occasional gaps in the data record. All TSP concentrations are reported in units of micrograms of dust per cubic meter of air.

本数据集采集自位于德克萨斯州拉伯克市第四街3810号（地理坐标33.593508, -101.897688）的美国农业部农业研究局（USDA-ARS）植物胁迫与节水（PSWC）实验室屋顶，监测对象为环境粉尘浓度（总悬浮颗粒物，Total Suspended Particulates, TSP）的逐小时数值。监测工作于2003年1月1日至2008年6月8日连续开展，累计时长超5年4个月。采样系统采用Rupprecht & Patashnick公司生产的1400a型锥元件振荡微天平（tapered element oscillating microbalance, TEOM）；采样入口未安装旋风预分离器或撞击器，因此该系统可直接测定总悬浮颗粒物（TSP）。采样系统安装于加高平台，采样入口距建筑平顶屋顶高度为2.2米，距周边地面高度为7.0米。研究区域的粉尘主要源自拉伯克市域外极易被侵蚀的农田，经多方向气流携带跨城输送，其中部分粉尘途经PSWC实验室并被采集记录。本研究尝试获取完整连续的监测记录，但受设备机械故障影响，数据记录偶有缺失。所有TSP浓度数据均以每立方米空气中所含粉尘的微克数为单位进行报告。