RELEASE-2022

This data product contains the quality-controlled, native sampling resolution data from NEON's stable isotopes in surface water sampling protocol. Filters containing suspended particulate organic matter (POM) are sent to external facilities for analysis to determine 15N/14N and 13C/12C particulate isotope ratios and particulate carbon and nitrogen masses. Water samples are sent to external facilities for analysis to determine 18O/12O and 2H/1H water isotope ratios. For additional details, see the user guide, protocols, and science design listed in the Documentation section in this data product's details webpage. Latency: The expected time from data and/or sample collection in the field to data publication is as follows, for each of the data tables (in days) in the downloaded data package. See the Data Product User Guide for more information. asi_externalLabH2OIsotopes: 120 asi_externalLabPOMSummaryData: 14 asi_externalLabSummaryData: 14 asi_fieldData: 30 asi_fieldSuperParent: 30 asi_POMExternalLabDataPerSample: 180

本数据产品包含经质量管控的、保留原生采样分辨率的地表水样稳定同位素监测数据，该数据源自美国国家生态观测站网络（National Ecological Observatory Network, NEON）的地表水样采样规程。其中搭载悬浮颗粒有机质（Suspended Particulate Organic Matter, POM）的滤膜将被送往外部分析机构，用于测定其15N/14N、13C/12C颗粒同位素比值，以及颗粒碳与颗粒氮的质量含量。水样样本将被送往外部分析机构，用于测定其18O/12O与2H/1H水体同位素比值。如需获取更多相关细节，请参阅本数据产品详情网页文档板块中列出的用户指南、采样规程与科学设计方案。
数据发布延迟：针对下载数据包内的各数据表格，从野外数据采集和/或样本收集到数据正式发布的预期时长（单位：天）如下，详细说明请参阅《数据产品用户指南》：
asi_externalLabH2OIsotopes：120
asi_externalLabPOMSummaryData：14
asi_externalLabSummaryData：14
asi_fieldData：30
asi_fieldSuperParent：30
asi_POMExternalLabDataPerSample：180