Air temperature measurements from Automatic Weather Station (AWS) at Freiburg – Werthmannstrasse (FRWRTM) from 2021-01-01 to 2021-12-31 [L2]

Quality controlled and gap-filled continuous air temperature data from the urban weather station at Freiburg-Werthmannstrasse (FRWRTM, 7.8447ºE, 47.9928, 277 m) using a passively ventilated and shielded temperature and humidity probe (Campbell Scientific Inc., CS 215) operated in a Stevenson Screen 2m above ground level in the vegetated backyard of Werthmannstrasse 10. Quality controlled in-canopy air temperature data are available and aggregated at 10min, 30min, hourly, daily, monthly and yearly resolution for the year 2021. Average, minimum and maximum in-canopy air temperatures are provided on hourly, daily, monthly and annual scales. Characteristic hours and days are reported on daily, monthly and annual scales (e.g. summer days with T_max > 25ºC, hot days with T_max > 30º, desert days with T_max > 35ºC, tropical nights with T_min > 20°, frost days with T_min < 0ºC and ice days with T_max < 0ºC, all based on 00:00 - 24:00 UTC). Detailed information on gap-filled data is provided. Note: All times are provided in UTC, not local time. For more details read `FRWRTM_2021_AirTemperature_MetaData.txt`. Version 1.1 contains additionally air temperature data aggregated at 10min and 30min. Version 1.2 corrects an error in the time-axis of the file "..._Air_Temperature2m_10_min_UTC.csv", where previously the file would only contain reasonable values until August-15, 23:50. Other files were unaffected by this. displays times according to ISO 8610 to unambiguously identify that all times are given in UTC. Further, the column headers for the time periods have been changed to "From" and "To" to indicate the start and end of the aggregation periods.本数据集包含经质量控制与缺失数据插补的连续气温数据，取自弗赖堡-韦特曼大街城市气象站（缩写FRWRTM，东经7.8447°，北纬47.9928°，海拔277米）。该站点使用Campbell Scientific公司生产的CS 215型被动通风屏蔽式温湿度探头，探头安装于韦特曼大街10号植被庭院内地面以上2米处的斯蒂芬森百叶箱（Stevenson Screen）中。 本数据集提供经过质量控制的冠层内气温数据，已聚合为2021年的10分钟、30分钟、逐小时、逐日、逐月及逐年时间分辨率数据。 数据集提供逐小时、逐日、逐月及逐年尺度下的冠层内气温平均值、最小值与最大值。 数据集按逐日、逐月、逐年尺度统计并报告特征时段与特征日，基于世界协调时（UTC）00:00至24:00的时间定义，包括最高气温（T_max）大于25℃的夏日、最高气温大于30℃的酷热日、最高气温大于35℃的沙漠日、最低气温（T_min）大于20℃的热带夜、最低气温小于0℃的霜日以及最高气温小于0℃的冰日。 数据集提供缺失数据插补的详细说明。 注意：所有时间均采用世界协调时（UTC），而非当地时间。 如需获取更多细节，请查阅`FRWRTM_2021_AirTemperature_MetaData.txt`文件。 版本1.1 新增10分钟与30分钟聚合的气温数据。 版本1.2 修正了文件`..._Air_Temperature2m_10_min_UTC.csv`的时间轴错误：此前该文件仅在2021年8月15日23:50前包含有效数据，其余文件未受此影响。本版本采用ISO 8610标准格式展示时间，以明确所有时间均采用世界协调时；同时将时间区间的列标题更改为"From"与"To"，以清晰标注聚合时段的起止节点。