Urban Heat Data 2021 Afternoon 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城市热岛测绘项目，该项目是一项覆盖全国的公民科学（citizen-science）行动，旨在采集全市范围内的气温与湿度本地观测数据。城市环境与街区的建造方式，会影响地表吸收与留存的热量总量，进而加剧或缓解极端高温事件的影响。极端高温频次上升，是夏洛茨维尔未来受气候变化影响的核心预测后果之一。 2021年8月24日，约30名志愿者在一场热浪天气中，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，当日气温偏高且降水量稀少。采集所得的数据由CAPA策略（CAPA Strategies）进行处理，目前可通过夏洛茨维尔市开放数据门户获取。此外还提供一份包含生成地图并阐释数据采集方法的PDF报告。更多相关信息可访问该市的城市热岛测绘项目官方网页。 文件标注说明： 轨迹数据（traverses）为矢量形状文件（.shp, vector shapefile），由项目参与者采集所得； 栅格数据（rasters）为GeoTIFF（.tif）格式文件，对应热表面模型； 时段标注：am 代表上午，af 代表下午，pm 代表晚间； 参数标注：t 代表气温，hi 代表热指数，f 代表华氏度； 示例：pm_hi_f.tif 即采用华氏度单位的晚间热指数GeoTIFF栅格文件。