International cooperation in the context of Sentinel-3 Ocean and Land Colour Imager (OLCI) validation studies over lake ecosystems (INCIS-3IVE)

Sentinel-3 海洋和陆地彩色成像仪 (OLCI) 湖泊生态系统验证研究 (INCIS-3IVE) 背景下的国际合作

• 批准号: NE/L013312/1
• 负责人: Andrew Tyler
• 金额: $ 4.58万
• 依托单位: University of Stirling
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FL013312%2F1
• 关键词: International; cooperation; context; Sentinel; Ocean

Water is vital for the existence of life on Earth. Lake and reservoirs contain something like 85% of all freshwater on Earth and as such any deterioration in the health of these systems can have profound effects on human society as well as the wider environment. Lakes are very dynamic environments and their health depends on many complex interactions between physical, chemical and biological processes. Lakes are also very sensitive systems and they respond rapidly to changes in our climate and also to the way we manage our lands. It's really important that we are able to measure the condition of lakes around the world and understand how they are changing as a result of human activities. However, this is no easy task. There are over 300 million lakes on Earth and they are scattered across the landscape and often in very remote and inaccessible locations. We simply do not have the financial or human resources to be able to monitor the health of all these lakes. In fact, we currently only monitor something like less than 0.00003% of all lakes and reservoirs on Earth.This a real challenge for lake scientists at the moment. One way of potentially meeting this challenge is to use satellites orbiting the Earth to make measurements of lake water quality. Satellites allow us to observe large areas on the Earth at any one time and they can provide these observations on a very frequent basis. This makes them ideal for assessing changes in lakes. However, the use of satellite observations for lake monitoring is technically challenging and we have only recently started to develop these techniques in a serious manner. In the next few years, the European Space Agency will be launching a series of new satellites called the Copernicus Sentinels. These satellites are being specifically designed for monitoring our environment, including the health of lakes and other inland waters. To get the very best of these new satellite sensors, there is an urgent need to bring together worldwide experts to work on the development of tools for extracting information on the status of lakes from the raw satellite observations. The purpose of this project is to bring together Europe's leading scientific teams with interests in the use of satellite sensors for lake monitoring and to get them working together on common challenges. In particular, the teams will be tasked with working out how better to relate satellite observations to measurements made on the ground. These are very technical considerations but are vitally important if we are to use satellite observations in the correct way. This project will exploit a rare opportunity to make use of some world-class research facilities and instruments in other countries. This will greatly benefit scientists in the UK and ensure they remain in a position to lead future developments in the field and contribute to the social and economic well-being of our wider society. Ultimately, we anticipate that in the very near future satellite technology will allow scientists to answer fundamental questions about how lakes are responding to changes in our climate and understand the implications of these changes for the wider environment and human society.

水对地球上生命的存在至关重要。湖泊和水库包含了地球上大约85%的淡水，因此，这些系统健康状况的任何恶化都会对人类社会和更广泛的环境产生深远的影响。湖泊是非常动态的环境，它们的健康依赖于物理、化学和生物过程之间的许多复杂相互作用。湖泊也是非常敏感的系统，它们对我们气候的变化和我们管理土地的方式做出快速反应。我们能够测量世界各地湖泊的状况并了解它们是如何随着人类活动的结果而变化的，这一点真的很重要。然而，这并不是一件容易的事情。地球上有超过3亿个湖泊，它们散布在风景中，往往位于非常偏远和人迹罕至的地方。我们根本没有财力或人力资源来监测所有这些湖泊的健康状况。事实上，我们目前只监测到地球上所有湖泊和水库的不到0.00003。这是目前湖泊科学家面临的真正挑战。可能应对这一挑战的一种方法是使用绕地球轨道运行的卫星来测量湖泊水质。卫星使我们能够在任何时候观测地球上的大片区域，它们可以非常频繁地提供这些观测。这使得它们成为评估湖泊变化的理想选择。然而，利用卫星观测进行湖泊监测在技术上具有挑战性，我们最近才开始认真开发这些技术。在接下来的几年里，欧洲航天局将发射一系列名为哥白尼哨兵的新卫星。这些卫星是专门为监测我们的环境而设计的，包括湖泊和其他内陆水域的健康状况。为了最好地利用这些新的卫星传感器，迫切需要召集世界各地的专家，共同开发工具，从原始的卫星观测中提取湖泊状况的信息。该项目的目的是将对使用卫星传感器进行湖泊监测感兴趣的欧洲领先的科学团队聚集在一起，并让他们共同应对共同的挑战。特别是，这些团队的任务是研究如何更好地将卫星观测与地面测量联系起来。这些都是非常技术性的考虑，但如果我们要以正确的方式使用卫星观测，它们是至关重要的。这个项目将利用一个难得的机会，利用其他国家的一些世界级的研究设施和仪器。这将极大地惠及英国的科学家，并确保他们继续处于领导该领域未来发展的地位，并为我们更广泛的社会的社会和经济福祉做出贡献。最终，我们预计在不久的将来，卫星技术将使科学家能够回答有关湖泊如何应对气候变化的基本问题，并了解这些变化对更广泛的环境和人类社会的影响。

项目成果

ACIX-Aqua: A global assessment of atmospheric correction methods for Landsat-8 and Sentinel-2 over lakes, rivers, and coastal waters

• DOI: 10.1016/j.rse.2021.112366
• 发表时间: 2021-06
• 期刊: Remote Sensing of Environment
• 影响因子: 13.5
• 作者: N. Pahlevan;A. Mangin;S. Balasubramanian;Brandon M. Smith;K. Alikas;K. Arai;C. Barbosa;S. Bélanger;C. Binding;M. Bresciani;C. Giardino;D. Gurlin;Yongzhen Fan;T. Harmel;P. Hunter;Joji Ishikaza;S. Kratzer;M. Lehmann;M. Ligi;R. Ma;F. Martin-Lauzer;L. Olmanson;N. Oppelt;Yanqun Pan;S. Peters;N. Reynaud;L. Carvalho;S. Simis;E. Spyrakos;F. Steinmetz;K. Stelzer;S. Sterckx;T. Tormos;A. Tyler;Q. Vanhellemont;M. Warren

Improved hyperspectral inversion of aquatic reflectance under non-uniform vertical mixing.

改进了非均匀垂直混合下水生反射率的高光谱反演。

• DOI: 10.1364/oe.450374
• 发表时间: 2022
• 期刊: Optics express
• 影响因子: 3.8
• 作者: Simis SGH