Boundary Layer Meteorology measurements collected from ice stations during the SIPEX II voyage of the Aurora Australis, 2012

Note - these data should be used with caution. The chief investigator for the dataset has indicated that a better quality dataset exists, but the AADC have been unable to attain it for archive.Matlab files containing raw data collected using the program "HC2S3snowwind.CR1" running on Campbell Scientific CR1000 dataloggers. Datalogger "C" was used during all ice stations. On the 8th of October a second mast and logger ("A") were installed on what became the final day of Ice Station 4, and both loggers were deployed at stations 6 and 7, with "C" containing the longer records for each station as it was always installed first and (conditions permitting) left out longer. The sensors on these masts consist of:RM Young "Wind Sentry" Vane and Anemometer set (on top of each mast), no serial numbersRotronics HC2S3 temperature and relative humidity sensors with standard polyethylene filters Upper sensor, mast "C": s/n 60837541Lower sensor, mast "C": s/n 60837536Upper sensor, mast "A": s/n 60837468Lower sensor, mast "A": s/n 60834204RM Young "Wind Sentry" anemometers (without vane) at 3 additional elevations on each mastWenglor YHO3NCT8 photoelectric sensors at 4 heights on each mast. The upper sensor and the third sensor from the top were oriented facing up, while the others faced down. The upper three sensors were purchased in 2012, from a batch of these sensors manufactured in a new Eastern European factory while the lowest sensor on each mast came from a lot purchased in 2007, manufactured in Wenglor's German factory and extensively tested for use in snow.Data contained in these .mat files includes the following variables, with units:Textdates: CSI formatted dates, UTC except for station 2, which was (accidentally) UTC+12Datenm: Matlab "datenumber", all UTC except for station 2, which is also UTC+12 hours.Battvolt: battery voltageWptemp: temperature of the Wiring Panel thermister, degrees CTemp 1: air temperature above approximately 50cm, ventilated HC2S3 rotronics sensor, degrees CRH1: relative humidity (WRT water) above approximately 50cm, ventilated HC2S3 rotronics sensor, %Temp 2: air temperature above approximately 200cm, ventilated HC2S3 rotronics sensor, degrees CRH2: relative humidity (WRT water) above 197cm, ventilated HC2S3 rotronics sensor, %Snow1: snow particles per 10second interval at approximately 10cmSnow2: snow particles per 10second interval at approximately 50cmSnow3: snow particles per 10second interval at approximately 100cmSnow4: snow particles per 10second interval at approximately 200cmWind1: average speed (m/s) at approximately 250cm during 10s interval Wind1max: maximum speed at approximately 250cm during 10s intervalWind2: average speed (m/s) at approximately 100cm during 10s intervalWind2max: maximum speed at approximately 100cm during 10s intervalWind3: average speed (m/s) at approximately 120cm during 10s intervalWind3max: maximum speed at approximately 120cm during 10s intervalWind4: average speed (m/s) at approximately 50cm during 10s intervalWind4max: maximum speed at approximately 50cm during 10s intervalWindDir: wind direction at approximately 250cm, degrees, relative to mast orientation (needs correction to true)Measurement heights varied by ice station and by mast being used.

注意：本数据集需谨慎使用。本数据集的首席研究员已指出存在更高质量的同类数据集，但AADC未能获取该数据集用于归档。
本数据集包含通过运行于Campbell Scientific CR1000数据记录仪上的程序“HC2S3snowwind.CR1”采集得到的原始数据，存储为Matlab格式文件。
所有冰站观测均使用数据记录仪“C”。10月8日，也就是冰站4的最后观测日，加装了第二套气象桅杆与数据记录仪“A”；冰站6和7同时部署了两套记录仪，每个观测站的记录中，“C”记录仪的记录时长更长——因“C”始终为最先安装且（条件允许时）留存观测时间更久的设备。
两套气象桅杆搭载的传感器如下：
1. RM Young“Wind Sentry”风向风速仪套装（安装于每根桅杆顶部），无序列号；
2. Rotronics HC2S3温湿度传感器，配备标准聚乙烯过滤器：
- 桅杆C上层传感器：序列号60837541
- 桅杆C下层传感器：序列号60837536
- 桅杆A上层传感器：序列号60837468
- 桅杆A下层传感器：序列号60834204
3. 每根桅杆额外增设3个高度层的RM Young“Wind Sentry”风速传感器（不含风向叶片）；
4. 每根桅杆搭载4个高度的Wenglor YHO3NCT8光电传感器：其中上层传感器与自上而下第三个传感器朝上安装，其余传感器朝下安装。该批次传感器中，上层3个为2012年采购自新建东欧工厂的产品，而每根桅杆的最低层传感器则为2007年采购批次产品，产自Wenglor德国工厂，并经过雪地环境下的全面性能测试。
本.mat格式文件包含以下变量及其对应单位：
1. Textdates：CSI格式化日期，采用协调世界时（UTC），但冰站2除外——该站数据意外采用了UTC+12时区；
2. Datenm：Matlab的datenumber格式时间戳，除冰站2采用UTC+12时区外，其余均为UTC时间；
3. Battvolt：电池电压；
4. Wptemp：接线盘热敏电阻温度，单位为摄氏度（℃）；
5. Temp 1：约50cm高度处的通风式HC2S3 Rotronics温湿度传感器采集的空气温度，单位为℃；
6. RH1：约50cm高度处的通风式HC2S3 Rotronics传感器采集的相对湿度（以水为参比），单位为%；
7. Temp 2：约200cm高度处的通风式HC2S3 Rotronics传感器采集的空气温度，单位为℃；
8. RH2：约197cm高度处的通风式HC2S3 Rotronics传感器采集的相对湿度（以水为参比），单位为%；
9. Snow1：约10cm高度处每10秒间隔内的雪粒计数；
10. Snow2：约50cm高度处每10秒间隔内的雪粒计数；
11. Snow3：约100cm高度处每10秒间隔内的雪粒计数；
12. Snow4：约200cm高度处每10秒间隔内的雪粒计数；
13. Wind1：约250cm高度处10秒间隔内的平均风速，单位为米每秒（m/s）；
14. Wind1max：约250cm高度处10秒间隔内的最大风速，单位为m/s；
15. Wind2：约100cm高度处10秒间隔内的平均风速，单位为m/s；
16. Wind2max：约100cm高度处10秒间隔内的最大风速，单位为m/s；
17. Wind3：约120cm高度处10秒间隔内的平均风速，单位为m/s；
18. Wind3max：约120cm高度处10秒间隔内的最大风速，单位为m/s；
19. Wind4：约50cm高度处10秒间隔内的平均风速，单位为m/s；
20. Wind4max：约50cm高度处10秒间隔内的最大风速，单位为m/s；
21. WindDir：约250cm高度处的风向，单位为度（°），以桅杆朝向为基准（需修正为真实风向）；
注：各冰站及所使用桅杆的传感器安装高度存在差异。