Stream Temperature - Jennifer Branch at Harford Hills (JBHH) Water year 2007-2008

Metadata for BES site - Stream Temperature: Jennifer Branch at Harford Hills (JBHH): In the Baltimore urban long-term ecological research (LTER) project, (Baltimore Ecosystem Study, BES) we use the watershed approach to evaluate integrated ecosystem function. The LTER research is centered on the Gwynns Falls watershed, a 17,150 ha catchment that traverses a gradient from the urban core of Baltimore, through older urban residential (1900 - 1950) and suburban (1950- 1980) zones, rapidly suburbanizing areas and a rural/suburban fringe. Stream temperature is continuously measured throughout the Gwynns Falls watershed along with supplemental sites around Baltimore County/City. A total of 22 sites contain sensors (HOBO Pro v2 Water Temperature Data Logger - U22-001) that take an instantaneous temperature reading every 2 minutes. These data are downloaded on a monthly basis. This dataset is Jennifer Branch near the "Cub Hill" tower flux site off Harford Village Drive. This site is 14 km from the Baltimore city center. The watershed is almost 47 ha with 12% forested and 29.5% impervious high and low-density residential land. Watershed information was taken from delineations created with USGS StreamStats at http://water.usgs.gov/osw/streamstats/maryland.html Purpose: Long-term monitoring of stream temperature in a suburban watershed. Theme keywords: stream, watershed, temperature, suburban, Baltimore Ecosystem Study Coordinates: Lat/Long 39.3992 (39 23 57) -76.5206 (-76 31 14)

巴尔的摩生态研究（Baltimore Ecosystem Study, BES）站点元数据——溪流温度：哈福德山珍妮弗分支（JBHH）。在巴尔的摩城市长期生态研究（Long-term Ecological Research, LTER，即巴尔的摩生态研究，Baltimore Ecosystem Study, BES）项目中，我们采用流域方法评估综合生态系统功能。该LTER研究以格温斯福尔斯流域为核心，这是一片面积17150公顷的集水区，覆盖从巴尔的摩城市核心区、1900-1950年建成的老旧城市住宅区、1950-1980年的郊区区域、快速郊区化地带直至乡村/郊区边缘的完整环境梯度。格温斯福尔斯流域及巴尔的摩县/市周边的补充监测站点均持续开展溪流温度监测：总计22个站点搭载了HOBO Pro v2水温数据记录仪（型号U22-001），每2分钟采集一次瞬时温度读数，数据按月下载更新。本数据集对应的监测点为哈福德村大道旁“立方山”通量塔附近的珍妮弗分支站点，距离巴尔的摩市中心14公里。该站点所在流域面积近47公顷，其中12%为林地，29.5%为高低密度住宅用地的不透水面。流域边界信息源自美国地质调查局（United States Geological Survey, USGS）StreamStats工具生成的划定结果，查询网址为http://water.usgs.gov/osw/streamstats/maryland.html。本研究目的为：对郊区流域的溪流温度开展长期监测。主题关键词：溪流、流域、温度、郊区、巴尔的摩生态研究。坐标信息：纬度/经度 39.3992（39°23′57″），-76.5206（-76°31′14″）。