Urban Heat Data 2021 Morning Traverse

Charlottesville participated in the 2021 NIHHIS-CAPA Urban Heat Island Mapping Campaign, a nationwide citizen-science based effort to collect local data on temperatures and humidity levels across the city. How urban environments and neighborhoods are built affects the amount of heat absorbed and retained, which can increase or reduce the impact of extreme heat events. Increases in extreme heat are one of the top projected impacts Charlottesville will experience from climate change. Data was collected by ~30 volunteers on August 24, 2021 along 7 pre-set routes (5 driving routes and 2 bicycle routes) during a heat wave on a day with high heat and low precipitation. The collected data was processed by CAPA Strategies and is now available through the City of Charlottesville's Open Data Portal. A PDF Report, including generated maps and explaining the data collection methodology, is also available. More information can be found on the City's Urban Heat Island Mapping Campaign webpage. File Notations: traverses (.shp, vector shapefile) = data collected by campaign participants rasters (.tif, geotiff) = heat surface models am = morning; af = afternoon; pm = evening t = temperature; hi = heat index f = fahrenheit e.g. pm_hi_f.tif = evening heat index geotiff raster with fahrenheit values.夏洛茨维尔（Charlottesville）参与了2021年NIHHIS-CAPA城市热岛测绘行动（Urban Heat Island Mapping Campaign），这是一项全国性的公民科学（citizen-science）项目，旨在收集全市范围内的气温与湿度本地化观测数据。城市建成环境与街区的建造方式会影响热量的吸收与留存量，进而改变极端高温事件的影响程度。极端高温的加剧，是夏洛茨维尔预计将因气候变化面临的最突出影响之一。 2021年8月24日，时值热浪侵袭且当日气温偏高、降水稀少，约30名志愿者沿7条预设路线（5条驾车路线与2条骑行路线）完成了数据采集工作。采集所得数据由CAPA Strategies进行处理，目前可通过夏洛茨维尔市开放数据门户（City of Charlottesville's Open Data Portal）获取。本次行动还附带一份包含生成专题地图与数据采集方法说明的PDF报告，可供获取。更多相关信息可查阅夏洛茨维尔市城市热岛测绘行动专属网页。 文件标注说明如下： traverses（.shp，矢量形状文件（vector shapefile））：行动参与者采集的轨迹矢量数据 rasters（.tif，GeoTIFF（geotiff））：地表热场模型数据 am = 上午；af = 下午；pm = 晚间 t = 气温（temperature）；hi = 热指数（heat index） f = 华氏度（fahrenheit） 示例：pm_hi_f.tif = 采用华氏度单位的晚间热指数GeoTIFF栅格文件。