MÉRA (Met Éireann ReAnalysis) Climate Reanalysis

Climate reanalysis is a systematic approach used to produce Meteorological datasets for climate monitoring and research. They are created using a fixed version of a forecast model and a data assimilation system which utilises historical observations and they produce parameters that are physically consistent and often not routinely observed. Thus, climate reanalyses have the potential to extend the knowledge gained from current observation networks. Met Éireann has carried out a 35-year very high resolution (2.5 km horizontal grid) regional climate reanalysis for Ireland using the ALADIN-HIRLAM numerical weather prediction system (www.hirlam.org). This reanalysis spans the period 1981 to 2015 and includes surface, near-surface and atmospheric parameters and is the first of its kind for Ireland. See here for more detail Technical Note 65: http://edepositireland.ie/handle/2262/81711气候再分析（Climate reanalysis）是一套系统性方法，旨在生成用于气候监测与研究的气象数据集。此类数据集基于固定版本的预报模式与数据同化系统构建，该系统融合历史观测数据，可生成物理自洽且通常无法通过常规观测获取的参数。因此，气候再分析数据集具备拓展现有观测网络所获认知的潜力。 爱尔兰气象局（Met Éireann）依托ALADIN-HIRLAM数值天气预报系统（访问网址：www.hirlam.org），针对爱尔兰开展了一项时长35年、水平网格分辨率达2.5千米的超高分辨率区域气候再分析研究。该再分析数据集的时间跨度为1981年至2015年，涵盖地表、近地表与大气各类参数，是爱尔兰国内首项同类气候再分析成果。详细内容可参阅技术报告第65号：http://edepositireland.ie/handle/2262/81711