Meteorological observations at Lincoln: 1963

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曾在多个站点开展。新西兰国家水与大气研究所（NIWA）的一份报告（Mullan, A.B; Stuart, S.J; Hadfield, M.G; Smith, M.J (2010). 《NIWA“七站”温度序列评估报告》，NIWA信息丛书第78号，第129-154页）记录了其中多个站点的观测数据，并详述了为统一不同站点间观测数据所开展的工作。目前尚未明确本次数据集采用的具体观测站点，因尚未能与NIWA的记录建立对应关联。

该数据集最初以.DAT格式存储。本次发布同步提供了原始.DAT文件，以及经过标准化处理并转换为.csv格式的数据集。

表头说明：原始.DAT文件未附带表头信息。通过与该数据配套使用的旧程序处理数据，可恢复其中绝大多数表头条目，但仍有一列数据标注为"unknown"，其含义暂未明确。

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记录（云量数据则以9标记）。在转换后的.csv文件中，上述缺失值已被移除，以空值替代。

各观测变量的单位推测如下：
* 太阳辐射：大概率为兆焦耳每平方米（MJ/m²）
* 气温：摄氏度（早期年份的数据可能由华氏度转换而来）
* 降雨量：毫米
* 云量：八分仪（oktas，即云量占天空总覆盖比例的八分之一）
* 风程：千米
* 水汽压：大概率为帕斯卡（Pa）