Long Term Salinity Measurements

长期盐度测量

• 批准号: 1129364
• 负责人: Raymond Schmitt
• 金额: $ 71.64万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1129364&HistoricalAwards=false
• 关键词: Long; Term; Salinity; Measurements

Sea surface salinity (SSS) is a key indicator of the intensity of the water cycle over the oceans. It also has a strong influence on the stability of the upper ocean, which affects its propensity to mix vertically and thereby store or release heat and carbon dioxide. Thus, it has emerged as an important variable for understanding the Earth?s climate system. However, our data base on SSS is limited, salinity has always been a difficult measurement to make autonomously due to the challenges of biological fouling. The PI's request funding to continue development of a self-cleaning conductivity sensor (and associated temperature and pressure measurements) with the goal of obtaining stable, long-term salinity measurements from a variety of ocean platforms. Deployment of such sensors on the drifters of the Global Drifter Program would provide a quantum leap in the numbers of SSS observations obtained and thereby make a substantial contribution to an improved understanding of the global water cycle requires a redesign to minimize the size and the manufacturing cost. In addition they propose to make a profiling model suitable for use on gliders and profilers. Their goal is to produce a sensor that will enable continuous monitoring of surface salinity from drifters in order to advance our understanding of the water cycle.Broader Impacts: This project develops a new capability to deploy low power salinity sensors with long-term stability in most of the platforms like drifters, moorings and AUV's. It's useful for the global drifter program. It is very useful for providing ground truth for the satellite derived salinity from SMOS (operational) and Aquarius (to be launched in June, 2011). Reliable long-term salinity measurements of the surface ocean are critical to accurately constrain the accelerating changes in the global water cycle, which are both predicted and appear to be occurring in response to global warming. The new sensor design should be commercially viable, thereby extending the scope of this proposal to include many more users such as with global ocean observing programs.

海表盐度（SSS）是海洋水循环强度的一个关键指标。它还对上层海洋的稳定性有很大影响，这会影响其垂直混合的倾向，从而储存或释放热量和二氧化碳。因此，它已经成为了解地球的一个重要变量。的气候系统。然而，我们的SSS数据库是有限的，盐度一直是一个困难的测量，使自主由于生物污染的挑战。PI请求提供资金，以继续开发自清洁电导率传感器（以及相关的温度和压力测量），目标是从各种海洋平台获得稳定的长期盐度测量。在全球漂流物方案的漂流物上部署这种传感器将使获得的SSS观测数量有一个巨大的飞跃，从而为更好地了解全球水循环作出重大贡献，这需要重新设计，以尽量减少尺寸和制造成本。此外，他们还建议制作一个适合在滑翔机和剖面仪上使用的剖面模型。他们的目标是生产一种传感器，能够持续监测漂流物的表面盐度，以促进我们对水循环的理解。 该项目开发了一种新的能力，可以在大多数平台（如漂流器，系泊设备和AUV）中部署长期稳定的低功率盐度传感器。对全球漂流者计划很有用。这对于为SMOS（运行中）和Aquarius（将于2011年6月发射）的卫星盐度提供地面实况非常有用。对表层海洋进行可靠的长期盐度测量，对于准确限制全球水循环的加速变化至关重要，全球水循环的加速变化是预测的，而且似乎正在发生，以应对全球变暖。新的传感器设计应该是商业上可行的，从而扩大这一建议的范围，包括更多的用户，如全球海洋观测计划。