Urban Heat Data 2021 Evening 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城市热岛测绘活动（NIHHIS-CAPA Urban Heat Island Mapping Campaign），该项目是一项基于公民科学的全国性行动，旨在采集全市范围内的气温与湿度本地观测数据。城市建成环境与街区的营建方式会影响热量的吸收与留存总量，进而改变极端高温事件的影响程度——或加剧或缓解。极端高温频次与强度的增加，是夏洛茨维尔预计将因气候变化承受的最主要影响之一。2021年8月24日，在一场热浪来袭、当日高温少雨的天气条件下，约30名志愿者沿7条预设路线（5条驾车路线、2条骑行路线）完成了数据采集工作。采集得到的数据经CAPA Strategies处理后，现已通过夏洛茨维尔市开放数据门户（City of Charlottesville's Open Data Portal）对外公开。此外，一份包含生成的地图并阐释数据采集方法的PDF报告也可供获取。更多相关信息可查阅该市的城市热岛测绘活动专题网页。 文件标注说明： - 遍历轨迹数据：格式为.shp（矢量形状文件，shapefile），即活动参与者采集的原始观测数据 - 栅格数据：格式为.tif（地理栅格文件，GeoTIFF），即热表面模型 - 时间前缀：am=上午；af=下午；pm=晚上 - 参数标注：t=气温；hi=热体感温度；f=华氏度 - 示例：pm_hi_f.tif 代表采用华氏度单位的晚间热体感温度地理栅格文件。