• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Geosciences >Sea Ice Observations in Polar Regions: Evolution of Technologies in Remote Sensing
【24h】

Sea Ice Observations in Polar Regions: Evolution of Technologies in Remote Sensing

机译：极地地区的海冰观测：遥感技术的发展

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Evolution of remote sensing sensors technologies is presented, with emphasis on its suitability in observing the polar regions. The extent of influence of polar regions on the global climate and vice versa is the spearhead of climate change research. The extensive cover of sea ice has major impacts on the atmosphere, oceans, and terrestrial and marine ecosystems of the polar regions in particular and teleconnection on other processes elsewhere. Sea ice covers vast areas of the polar oceans, ranging from ~18 × 106 km2 to ~23 × 106 km2, combined for the Northern and Southern Hemispheres. However, both polar regions are witnessing contrasting rather contradicting effects of climate change. The Arctic sea ice extent is declining at a rate of 0.53 × 106 km2·decade–1, whereasAntarcticaexhibits a positive trend at the rate of 0.167 × 106 km2·decade–1. This work reviews literature published in the field of sea ice remote sensing, to evaluate and access success and failures of different sensors to observe physical features of sea ice. The chronological development series of different sensors on different satellite systems, sensor specifications and datasets are examined and how they have evolved to meet the growing needs of users is outlined. Different remote sensing technology and observational methods and their suitability to observe specific sea ice property are also discussed. A pattern has emerged, which shows that microwave sensors are inherently superior to visible and infrared in monitoring seasonal and annual changes in sea ice. Degree of successes achieved through remote sensing techniques by various investigators has been compared. Some technologies appear to work better under certain conditions than others, and it is now well accepted that there is no algorithm that is ideal globally. Contribution of Indian remote sensing satellites is also reviewed in the context of polar research. This review suggests different primary datasets for further research on sea ice features (sea ice extent, ice type, sea ice thickness, etc.). This work also examines past achievements and how far these capabilities have evolved and tap into current state of art/direction of sensor technologies. Effective monitoring and syntheses of past few decades of research pinpoint useful datasets for sea ice monitoring, thereby avoiding wastage of resources to find practical datasets to monitor these physically inaccessible regions.
机译：介绍了遥感传感器技术的发展，重点是其在观测极地地区的适用性。极地地区对全球气候的影响程度，反之亦然，是气候变化研究的先驱。海冰的广泛覆盖特别是对极地的大气，海洋以及陆地和海洋生态系统产生了重大影响，并对其他地方的其他过程造成了遥相关。海冰覆盖了极地海洋的广阔区域，面积范围从〜18×106 km2到〜23×106 km2，包括北半球和南半球。但是，两个极地地区都目睹了气候变化的相反而相矛盾的影响。北极海冰面积以0.53×106 km2·decade-1的速率下降，而南极洲以0.167×106 km2·decade-1的速率呈正趋势。这项工作回顾了在海冰遥感领域发表的文献，以评估和获取不同传感器的成功与失败，以观察海冰的物理特征。研究了不同卫星系统上不同传感器，传感器规格和数据集的按时间顺序排列的系列，概述了它们如何演变以满足用户不断增长的需求。还讨论了不同的遥感技术和观测方法，以及它们对观测特定海冰特性的适用性。出现了一种模式，表明在监测海冰的季节和年度变化方面，微波传感器在本质上优于可见光和红外。比较了各种研究人员通过遥感技术获得的成功程度。在某些条件下，某些技术似乎比其他技术更好地工作，并且现在已经众所周知，没有一种算法在全局范围内是理想的。在极地研究的背景下，也回顾了印度遥感卫星的贡献。这篇评论为海冰特征（海冰范围，冰类型，海冰厚度等）的进一步研究提出了不同的主要数据集。这项工作还检查了过去的成就以及这些功能已发展到何种程度，并充分利用了传感器技术的最新技术/方向。过去几十年的有效监视和综合研究为海冰监视确定了有用的数据集，从而避免了浪费资源来寻找可监视这些物理上不可访问区域的实用数据集。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号