In-canopy air temperature measurements at Hartheim Forest Research Site (DE-Har) from 2004-01-01 to 2004-12-31 [L2]
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Quality controlled and gap-filled continuous air temperature data measured inside the forest canopy at Hartheim Forest Research Site (ICOS Associate Ecosystem Site DE-Har, UFR Code: HARTHM, 7.59814ºE, 47.93391ºN, 201 m) using an actively ventillated and shielded psychrometer with a PT100 resistance thermometer based on the design of Frankenberger (1951). The psychrometer is operated 2m above ground level at the base of the 30m measurement tower. Quality controlled in-canopy air temperature data are available and aggregated at 10min, 30min, hourly, daily, monthly and yearly resolution for the year 2004. 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 `HARTHM_2004_AirTemperature_MetaData.txt`. Reference: Frankenberger E. (1951): Untersuchungen über den Vertikalaustausch in den unteren Dekametern der Atmosphäre, Ann. Meteorol. 4, 358–374. Version 1.1 changes: 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.
本数据集为经质量控制与缺失值插补的连续空气温度数据,采集于哈特海姆森林研究站(ICOS 关联生态系统站点DE-Har,UFR编码:HARTHM,经度7.59814°E,纬度47.93391°N,海拔201米)的林冠内部。数据采用基于Frankenberger(1951)设计的、搭载PT100电阻温度计的主动通风屏蔽式干湿球湿度计(psychrometer)采集,该湿度计安装于30米观测塔的基座处,距地面高度2米。 本数据集提供2004年的林冠内空气温度质量控制数据,聚合分辨率涵盖10分钟、30分钟、小时、日、月及年尺度。 同时提供小时、日、月及年尺度下的林冠内空气平均气温、最低气温与最高气温数据。 此外还提供日、月及年尺度下的特征时刻与特征日统计结果(例如以00:00-24:00 UTC为时间基准的:最高气温大于25℃的夏日、最高气温大于30℃的酷热日、最高气温大于35℃的酷暑日、最低气温大于20℃的热带夜、最低气温低于0℃的霜日以及最高气温低于0℃的冰日等)。 本数据集同时提供缺失值插补数据的详细说明。 注意:所有时间均采用协调世界时(UTC),而非当地时间。 如需获取更多详细信息,请查阅`HARTHM_2004_AirTemperature_MetaData.txt`文件。 参考文献:Frankenberger E.(1951):《大气层低层十米尺度的垂直交换研究》(原文德文标题:Untersuchungen über den Vertikalaustausch in den unteren Dekametern der Atmosphäre),《气象学年刊》(Ann. Meteorol.)第4卷,第358–374页。 版本1.1更新内容: 1. 修正了文件`..._Air_Temperature2m_10_min_UTC.csv`的时间轴错误:此前该文件仅在2004年8月15日23:50前包含有效数据,其余文件未受此影响。 2. 按照ISO 8610标准格式化时间,以明确表明所有时间均采用UTC格式;此外,时间区间的列标题已修改为"From"与"To",用以清晰标注聚合时段的起止节点。



