Air temperature measurements from Automatic Weather Station (AWS) at Freiburg – Chemiehochhaus (FRCHEM) from 2018-01-01 to 2018-12-31 [L2]

Quality controlled and gap-filled continuous air temperature data from the urban rooftop weather station at Freiburg-Chemiehochhaus (FRCHEM, 7.8486ºE, 48.0011ºN, 323.5 m) using an actively ventillated and shielded psychrometer operated 2m above roof level. Quality controlled air temperature data are available and aggregated at 10min, 30min, hourly, daily, monthly and yearly resolution for the year 2018. Average, minimum and maximum 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 `FRCHEM_2018_AirTemperature_MetaData.txt`.本数据集为经过质量控制与间隙填补的连续气温观测数据，源自弗赖堡化工大厦（Freiburg-Chemiehochhaus，简称FRCHEM，东经7.8486°，北纬48.0011°，海拔323.5米）的城市屋顶气象站。该站点采用安装于屋顶上方2米处的主动通风屏蔽式干湿球温度表开展观测。 本数据集包含2018年的质控气温数据，且已聚合为10分钟、30分钟、逐小时、逐日、逐月及逐年多种时间分辨率。 数据集提供逐小时、逐日、逐月及逐年尺度下的平均、最低与最高气温。 逐日、逐月及逐年尺度下的特征时段与特征日统计结果亦已产出，例如基于00:00-24:00协调世界时（UTC）定义的：最高气温T_max>25℃的夏日、T_max>30℃的酷热日、T_max>35℃的荒漠日，最低气温T_min>20℃的热带夜，T_min<0℃的霜日，以及T_max<0℃的冰日。 数据集同时提供间隙填补数据的详细说明。 注意：所有时间均采用协调世界时（UTC），而非当地时间。 如需获取更多细节，请参阅`FRCHEM_2018_AirTemperature_MetaData.txt`文件。