Hansell Dennis A, Orellana Mónica V
Department of Ocean Sciences, RSMAS, University of Miami, Miami, FL 33149, USA.
Polar Science Center, Applied Physics Laboratory, University of Washington, Seattle, WA 98105, USA.
Gels. 2021 Aug 28;7(3):128. doi: 10.3390/gels7030128.
Marine dissolved organic matter (DOM) holds ~660 billion metric tons of carbon, making it one of Earth's major carbon reservoirs that is exchangeable with the atmosphere on annual to millennial time scales. The global ocean scale dynamics of the pool have become better illuminated over the past few decades, and those are very briefly described here. What is still far from understood is the dynamical control on this pool at the molecular level; in the case of this Special Issue, the role of microgels is poorly known. This manuscript provides the global context of a large pool of marine DOM upon which those missing insights can be built.
海洋溶解有机物（DOM）储存着约6600亿吨碳，使其成为地球上主要的碳库之一，可在年度到千年的时间尺度上与大气进行交换。在过去几十年里，这个碳库在全球海洋尺度上的动态变化已得到更清晰的阐释，在此进行简要描述。然而，在分子层面上对这个碳库的动态控制仍远未被理解；就本期特刊而言，微凝胶的作用还鲜为人知。本手稿提供了大量海洋DOM的全球背景信息，在此基础上可以构建那些缺失的见解。
