CZO Network water budget data products

The US Critical Zone Observatories (CZOs) were created to advance understanding of the thin layer of the earth’s surface extending from unweathered bedrock to the top of the vegetation canopy. As part of this mission, each of the U.S CZOs is collecting and/or utilizing data for quantifying fluxes of water into and through the critical zone. This data resource collates common hydrological data from each of the U.S. CZOs, as a way of facilitating network-scale insight into the storage and transmission of water in the critical zone. Specifically, the data resource contains two “Levels” of data products. Level 1 data products are re-formatted versions of already existing data sets, such that variable units and the row-column orientation of each data set have been made standard to facilitate rapid utilization. Level 2 data products include basin-average estimates of precipitation, runoff, potential evapotranspiration, and transpiration which have been derived from Level 1 products. Specific methods for generating Level 2 data are outlined in the meta data, and detailed in a forthcoming publication by Wlostowski et al. (expected 2019).

美国关键带观测站（Critical Zone Observatories, CZOs）旨在推进对地球表面薄层——自未风化的基岩延伸至植被冠层顶部——的理解。作为此任务的一部分，美国的每个关键带观测站均在收集和/或利用数据，以量化关键带中水的通量和流量。该数据资源整合了来自美国各个关键带观测站的常见水文数据，以此促进网络规模对关键带中水存储和传输的洞察。具体而言，该数据资源包含两种“级别”的数据产品。一级数据产品是对现有数据集的重新格式化版本，其中变量的单位以及每个数据集的行列方向均已标准化，以便利快速利用。二级数据产品包括流域平均的降水、径流、潜在蒸散量和蒸腾量估计，这些估计值均源自一级产品。生成二级数据的特定方法已在元数据中概述，并在Wlostowski等人即将发表的论文（预计2019年）中详细阐述。