A Model Evaluation Data Set for the Tropical ARM Sites

This data set has been derived from various ARM and external data sources with the main aim of providing modelers easy access to quality controlled data for model evaluation. The data set contains highly aggregated (in time) data from a number of sources at the tropical ARM sites at Manus and Nauru. It spans the years of 1999 and 2000. The data set contains information on downward surface radiation; surface meteorology, including precipitation; atmospheric water vapor and cloud liquid water content; hydrometeor cover as a function of height; and cloud cover, cloud optical thickness and cloud top pressure information provided by the International Satellite Cloud Climatology Project (ISCCP).本数据集源自多套ARM（Atmospheric Radiation Measurement，大气辐射测量计划）及外部数据源，核心宗旨为向建模人员提供经过严格质量控制的高质量数据，以支撑模型评估工作。数据集涵盖马努斯岛（Manus）与瑙鲁岛（Nauru）两处热带ARM观测站点的多源时序高度聚合数据，时间跨度为1999年至2000年。数据集包含以下多类信息：向下地表辐射；地表气象要素（含降水数据）；大气水汽与云液态水含量；随高度分布的水凝物覆盖率；以及由国际卫星云气候学计划（International Satellite Cloud Climatology Project, ISCCP）提供的云量、云光学厚度与云顶气压数据。