Glider observations of productivity in the Alboran Sea (GOPITAS)

阿尔沃兰海生产力滑翔机观测 (GOPITAS)

• 批准号: NE/H012532/1
• 负责人: Jan Kaiser
• 金额: $ 8.24万
• 依托单位: University of East Anglia
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2010
• 资助国家: 英国
• 起止时间: 2010 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FH012532%2F1
• 关键词: Glider; observations; productivity; Alboran; Sea

Marine plants contribute about half of the global net primary production and thus sustain fisheries and world food supplies. Current climate change caused by anthropogenic greenhouse gas emissions is likely to affect this production through changes in temperature, ocean circulation, pH, nutrient and light availability. Understanding what drives production is therefore a key problem of marine science. Here, we propose a pilot study involving UEA's three ocean gliders, to make a significant contribution to improving this understanding by observing the physical, chemical and biological processes driving production in the Alboran Sea, western Mediterranean. In the temperate and polar oceans, winter overturning provides nutrients for surface production, but in the subtropical gyres this mechanism is too weak to overcome nutrient limitation. The gyres of the Alboran Sea behave like the subtropical gyres, but are much smaller and therefore easier to study. In such regions, smaller-scale processes are likely to contribute significantly, e.g., wind/turbulence interactions at the mesoscale (10-100 km) and submesoscale (1-10 km). Resolving these small-scale processes through traditional ship-board surveys is expensive and technically challenging. Recently developed autonomous platforms and sensors can significantly enhance traditional ship-based work. For example, a fleet of >3000 Argo floats now take regular temperature and salinity profiles of the upper 2 km of the world's oceans (www.argo.ucsd.edu) and help improve our understanding of oceanic heat budgets and circulation. Biological and chemical sensors add further dimensions to these technologies. In particular, oxygen sensors can measure net community production, i.e. the balance between oxygen-producing photosynthesis and oxygen-consuming respiration. Continuous measurements of key parameters and processes have thus become possible on a global scale. Floats can only vertically in the water column and are otherwise drifting passively. Gliders have been developed to partly overcome the limited manoeuvrability of floats. These autonomous vehicles can be interactively piloted in the vertical as well as horizontal direction and acquire depth profiles of marine physical and biogeochemical parameters with high resolution in space and time. They can 'see' where satellites cannot penetrate the surface, work for months at a time and are much cheaper than traditional oceanographic cruises. We propose the use of three gliders for simultaneous measurements of physical, chemical and biological parameters in the Alboran Sea, a small seasonally oligotrophic gyre system in the western Mediterranean Sea, adjacent to two frontal zones. Our overall goal is to establish how to best use gliders to improve our understanding of processes sustaining biological production, on all temporal and spatial scales. The GOPITAS pilot study will bring a biogeochemical component to the international REP10 Alboran Sea experiment organised by the NATO Undersea Research Centre (NURC) involving up to 15 gliders. The Small Grant is sufficient to enable GOPITAS thanks to the generous support in kind from our project partners, including free access to the ships HMS Roebuck (UK Navy) and NRV Alliance (NATO) as well as deployment and technical support from the glider manufacturer (iRobot). This will be one of the first deployments worldwide of three biogeochemical gliders simultaneously.

海洋植物贡献了全球净初级生产的一半，因此维持渔业和世界粮食供应。人为温室气体排放引起的当前气候变化可能会通过温度，海洋循环，pH，养分和光的可用性变化影响这种产量。因此，了解什么推动生产是海洋科学的关键问题。在这里，我们提出了一项涉及UEA的三个海洋滑翔机的试点研究，以通过观察驱动西地中海Alboran Sea生产的物理，化学和生物学过程来为改善这种理解做出重大贡献。在温带和极地海洋中，冬季倾覆为表面产生提供营养，但是在亚热带的回旋中，这种机制太弱了，无法克服营养限制。 Alboran Sea的Gyres的行为就像亚热带回旋，但要小得多，因此更容易学习。在此类地区，较小规模的过程可能会显着贡献，例如，在中尺度（10-100 km）和Submessoscale（1-10 km）的风/湍流相互作用。通过传统的船板调查解决这些小规模的过程是昂贵且技术挑战性的。最近开发的自主平台和传感器可以显着增强传统的基于船舶的工作。例如，一个> 3000 Argo浮子的车队现在需要定期进行世界海洋上部2公里（www.argo.ucsd.edu）的定期温度和盐度概况，并有助于提高我们对海洋热预算和循环的理解。生物和化学传感器为这些技术增加了进一步的维度。特别是，氧气传感器可以测量净社区生产，即产生氧气的光合作用和消氧呼吸之间的平衡。因此，对关键参数和过程的连续测量在全球范围内已成为可能。浮子只能垂直在水柱中，否则可以被动地漂移。已经开发了滑翔机，以部分克服浮子的可操作性有限。这些自动驾驶汽车可以在垂直方向和水平方向上进行交互试验，并获得海洋物理和生物地球化学参数的深度剖面，并具有高分子和时间分辨率。他们可以“看到”卫星无法渗透地面，一次工作数月，并且比传统的海洋巡游便宜得多。我们建议使用三个滑翔机用于同时测量Alboran Sea的物理，化学和生物学参数，Alboran Sea是地中海西部的一个小季节性贫营养Gyre系统，毗邻两个额叶。我们的总体目标是建立如何最好地利用滑翔机，以提高我们对所有时间和空间尺度上生物生产过程的过程的理解。 Gopitas试点研究将为北约海底研究中心（NURC）组织的国际Rep10 Alboran Sea实验带来生物地球化学成分，最多涉及15个滑翔机。由于我们的项目合作伙伴的慷慨支持，包括免费访问HMS HMS Roebuck（英国海军）和NRV Alliance（NATO），以及Glider Manufacturer（Irobot）的部署和技术支持。这将是同时在三个生物地球化学滑翔机的全球第一次部署之一。

项目成果

Seaglider observations of equatorial Indian Ocean Rossby waves associated with the Madden-Julian Oscillation

与马登-朱利安振荡相关的赤道印度洋罗斯贝波的海上滑翔机观测

• DOI: 10.1002/2013jc009657
• 发表时间: 2014
• 期刊: Oceans
• 作者: Webber B

Ocean processes at the Antarctic continental slope.

• DOI: 10.1098/rsta.2013.0047
• 发表时间: 2014-07-13
• 期刊: Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
• 作者: Heywood KJ;Schmidtko S;Heuzé C;Kaiser J;Jickells TD;Queste BY;Stevens DP;Wadley M;Thompson AF;Fielding S;Guihen D;Creed E;Ridley JK;Smith W
• 通讯作者: Smith W

Corrigendum to "Technical note: Consistent calculation of aquatic gross production from oxygen triple isotope measurements" published in Biogeosciences, 8, 1793-1811, 2011

更正

• DOI: 10.5194/bg-8-2561-2011
• 发表时间: 2011
• 期刊: Biogeosciences
• 影响因子: 4.9
• 作者: Kaiser J

Technical note: Consistent calculation of aquatic gross production from oxygen triple isotope measurements

技术说明：根据氧三重同位素测量对水产总产量进行一致计算

• DOI: 10.5194/bg-8-1793-2011
• 发表时间: 2011
• 期刊: Biogeosciences
• 影响因子: 4.9
• 作者: Kaiser J

Glider Observations of the Northwestern Iberian Margin During an Exceptional Summer Upwelling Season

在特殊的夏季上升流季节对伊比利亚西北边缘进行滑翔机观测

• DOI: 10.1029/2019jc015804
• 发表时间: 2020
• 期刊: Oceans
• 作者: Rollo C