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>研究重点：西北大西洋陆缘生源元素收支</p>
<p>为降低未来全球环境质量预测中的重大不确定性，亟需明确大气CO₂的源与汇、人为活动干扰自然碳循环的作用，以及这些活动与自然碳循环之间的影响与反馈机制。在海洋系统中，陆缘碳循环受影响最为显著。美国能源部（U.S. Department of Energy）设计并实施了一项名为<a href="http://www.oasdpo.bnl.gov/mosaic/omp/">海洋陆缘计划（Ocean Margins Program, OMP）</a>的野外研究，以探究西北大西洋大陆边缘的碳循环过程。该计划的核心目标包括：</p>
<ol>
<li>量化影响陆-海界面处碳及其他生源元素的循环、通量与储存的过程与机制；</li>
<li>明确全球生物地球化学循环中的海洋陆缘源与汇；</li>
<li>确定包括大陆架在内的海洋陆缘是否在清除大气二氧化碳并通过沉积物埋藏或向大洋内部/其他区域输出从而隔离碳的过程中，具有定量意义上的重要性。</li>
</ol>
<p>该野外项目获取了迄今为止针对海洋陆缘开展的规模最庞大、多学科交叉的水柱与海底观测数据集。然而，美国能源部在完成海洋陆缘计划的预定综合分析前，终止了其海洋研究项目。在缺乏集成、资助且有序的数据分析的情况下，这项投入5000万美元的海洋陆缘碳通量研究将付诸东流——这尤其令人惋惜，因为当前获得资助的全球海洋通量联合研究（Joint Global Ocean Flux Study, JGOFS）的SMP计划中，缺失了一项关键要素：来自海洋陆缘与河流的输入数据（引自1998年5月20日至22日于博尔德召开的美国JGOFS SMP首席研究员会议纪要）。在此背景下，我们提议完成海洋陆缘计划的原定目标，并推动将该数据集整合至各项互补的JGOFS项目分析中。海洋陆缘计划数据集专门针对SMP的所有核心目标，可对JGOFS现有海洋数据库形成有效补充，因此与SMP的项目规划目标高度契合。</p>
<p>&nbsp;</p>