Observations and synthesis to establish variability and trends of oceanic pH

我们提出了一个观测方案，结合对过去和正在进行的时间序列的分析，以发现在季节到十年的时间尺度上表面pH值变化的幅度。我们将利用时间序列站和志愿观测船的数据，测量海洋碳酸盐系统的三个参数，处理大西洋、英国陆架和斜坡水域以及南大洋选定的地点。该方案将与其他欧洲国家的同事的努力相结合(使其能够更好、更长期地覆盖更广泛的领域)。它将与表层海洋碳地图集项目(SOCAT)协调，该项目旨在制作最全面和最新的数据库，以获取与海洋碳吸收有关的所有高质量数据，并从中得出PH值趋势。对十年趋势变化的估计将以年内和年际变化为背景。

We propose a programme of observations, combined with analysis of past and ongoing time series, to discover the magnitude of surface pH variations at seasonal-up-to-decadal time scales. We will address the Atlantic, UK shelf and slope waters, and selected locations in the Southern Ocean, using data from time series stations and volunteer observing ships (VOS), measuring three parameters of the marine carbonate system. The programme will be integrated with the efforts of colleagues in other European countries, (enablng better and longer-term coverage, and of of a wider area). It will be co-ordinated with the Surface ocean carbon atlas project (SOCAT) which aims to produce the most comprehensive and up to date data base to access all the quality data relevant to ocean carbon uptake, and from which pH trends can be derived. Estimation of decadal trends change will be set against the background of intra- and inter-annual variation.