Meteorological observations at Lincoln: 1966

Lincoln meteorological observations have been taken at a range of sites over the years. A NIWA report (Mullan, A.B; Stuart, S.J; Hadfield, M.G; Smith, M.J (2010). Report on the Review of NIWA's 'Seven-Station' Temperature Series. NIWA Information Series No. 78. pp.129-154) records a number of these along with the work undertaken to reconcile the data between different sites. It is not yet clear which site(s) these measurements were taken at as we have not yet identified a correspondence with NIWA's records.<br><br>The datasets had been stored as .DAT files. The .DAT files have been uploaded as is, and also standardised and converted into .csv format.<br><br>Headers: The original .DAT files were stored without headers. Most of these could be recovered for the .csv by running the data through an old program that had been used in conjunction with the data, but one column remains "unknown".<br><br>Missing data: In the .DAT files, missing measurements are variously recorded, depending on context, as 0, -9, -99 or (in the case of Cloud cover) 9. In the .csv these values have been removed and left blank.<br><br>Units are most likely:<br><br>* solar radiation - probably MJ/m2 (megajoules per square metre)<br>* temperatures - Celsius (in early years possibly converted from an original measurement in Fahrenheit)<br>* rainfall - millimetres<br>* cloud - oktas (eighths of the sky taken up by cloud)<br>* wind run - kilometres<br>* vapour pressure - probably Pa (pascals)

多年来，林肯地区的气象观测在多个站点开展。新西兰国家水与大气研究所（NIWA, National Institute of Water and Atmospheric Research）于2010年发布的一份报告（Mullan, A.B; Stuart, S.J; Hadfield, M.G; Smith, M.J. 2010. 《NIWA“七站点”温度序列评估报告》，NIWA信息系列第78号，第129-154页）记录了其中多项观测内容，并详述了为协调不同站点间数据一致性所开展的工作。目前尚未明确本次使用的观测数据源自哪些站点，因尚未找到其与NIWA官方记录的对应关联。

该数据集最初以.DAT格式文件存储。本次发布既保留了原始.DAT格式文件，也将数据进行标准化处理并转换为.csv格式。

表头信息：原始.DAT文件未存储表头字段。通过使用曾与该数据配套使用的旧程序对数据进行解析，可恢复其中绝大多数表头，但仍有一列信息暂未明确，标注为"unknown"。

缺失值处理：在原始.DAT文件中，根据不同观测场景，缺失的测量值分别以0、-9、-99标记；对于云量观测，缺失值则以9记录。在转换后的.csv文件中，上述所有缺失值已被移除并留空。

各参数单位推测如下：
* 太阳辐射：大概率为兆焦每平方米（MJ/m²）
* 气温：摄氏度（早期观测数据可能由华氏度转换得到）
* 降雨量：毫米
* 云量：八分云量单位（oktas，以天空被云覆盖的八分之一为计量单元）
* 风程：千米
* 水汽压：大概率为帕斯卡（Pa）