Niskin bottle and CTD profile data from ACE, OMP, SEEP-I and SEEP-II studies in the NW Atlantic Ocean Margin between 1997 and 1988 (U.S. JGOFS Synthesis & Modeling Phase project results)

<p>Research focus: Budgets of biogenic elements in the NW Atlantic Ocean Margin</p>

<p>To reduce major uncertainties in predicting future global environmental quality, it is imperative to understand the sources and sinks of atmospheric CO₂, the role of anthropogenic activities in disrupting the natural carbon cycle, and the effects of, and feedbacks between, these activities and the natural carbon cycle. Within the oceans, the ocean margin carbon cycle will be the most impacted. The U.S. Department of Energy designed and implemented a field study called the <a href="http://www.oasdpo.bnl.gov/mosaic/omp/">Ocean Margins Program</a> (OMP) to examine carbon cycling in the continental margin of the western North Atlantic Ocean. The central objectives of the OMP are</p>

<ol>
<li>to quantify the processes and mechanisms that affect the cycling, flux, and storage of carbon and other biogenic elements at the land/ocean interface;</li>
<li>to define ocean-margin sources and sinks in global biogeochemical cycles; and</li>
<li>to determine whether ocean margins, including continental shelves, are quantitatively significant in removing carbon dioxide from the atmosphere and isolating it via burial in sediments or by export to the interior ocean, or elsewhere.</li>
</ol>

<p>This field program resulted in the most extensive, multidisciplinary set of water column and seabed observations ever obtained over an ocean margin. However, the DOE has terminated its marine research programs prior to the planned synthesis of the OMP. In the absence of an integrated, funded, and organized data analysis, this $50M investment in ocean margin carbon fluxes will be lost, which would be especially unfortunate since a salient element missing in the presently funded JGOFS SMP is input from ocean margins and rivers (Synopsis of the U.S. JGOFS SMP PI meeting, Boulder, May 20-22, 1998). Here, we propose to complete the original OMP objectives and facilitate the incorporation of the resulting database into the analyses of the various complementary JGOFS programs. The OMP dataset specifically addresses all of the major SMP goals, complements the JGOFS oceanic databases, and thus is highly relevant to SMP programmatic goals.</p>

<p>&nbsp;</p>

<p>研究焦点：西北大西洋边缘生物地球化学元素预算</p><p>为减少预测未来全球环境质量时存在的主要不确定性，深入了解大气二氧化碳的源汇、人类活动对自然碳循环的干扰作用，以及这些活动与自然碳循环之间的相互作用和反馈机制，显得尤为迫切。在海洋环境中，大陆边缘的碳循环将受到最为显著的影响。美国能源部设计并实施了名为<a href="http://www.oasdpo.bnl.gov/mosaic/omp/">海洋边缘计划</a>（Ocean Margins Program，简称 OMP）的实地研究，旨在考察西北大西洋大陆边缘的碳循环。OMP 的核心目标包括：</p><ol><li>量化影响陆地/海洋界面碳及其他生物地球化学元素循环、通量和储存的过程与机制；</li><li>在全球生物地球化学循环中定义海洋边缘的源和汇；</li><li>确定海洋边缘（包括大陆架）在从大气中移除二氧化碳并通过埋藏于沉积物或将其输出至海洋内部或其他地方进行隔离方面是否具有量化意义。</li></ol><p>该实地研究产生了迄今为止在海洋边缘获得的最广泛、多学科的水柱和海底观测数据集。然而，美国能源部在计划内的 OMP 综合分析之前终止了其海洋研究项目。在没有整合、资助和组织的综合数据分析的情况下，这 5000 万美元的海洋边缘碳通量投资将付诸东流，这尤为令人遗憾，因为目前资助的全球海洋通量研究计划（JGOFS SMP）中缺失的显著要素正是来自海洋边缘和河流的数据（参见美国 JGOFS SMP PI 会议纪要，博尔德，1998 年 5 月 20-22 日）。在此，我们提出完成 OMP 的原始目标，并促进所得数据库融入各种互补 JGOFS 计划的分析中。OMP 数据集具体针对所有主要 SMP 目标，补充了 JGOFS 海洋数据库，因此与 SMP 计划目标高度相关。</p><p>&nbsp;</p>