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首页> 外文期刊>International journal of remote sensing >INSAT-3D and MODIS retrieved sea surface temperature validation and assessment over waters surrounding the Indian subcontinent
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INSAT-3D and MODIS retrieved sea surface temperature validation and assessment over waters surrounding the Indian subcontinent

机译：INSAT-3D和MODIS检索了印度次大陆周围水域的海表温度验证和评估

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摘要

The INSAT-3D imager (4 km) and Moderate Resolution Imaging Spectroradiometer (MODIS) sensor on-board Aqua and Terra space-platforms level-2 (1 km) sea surface temperature (SSTskin) product accuracy has been analysed over waters surrounding the Indian subcontinent by indirect comparison method using collocated bulk in-situ measurements (SSTdepth) for 3 years (October 2013-October 2016). Statistical results show that root mean square error of all the three satellites is in range of around 0.600.70 degrees C. Retrieval error is found to be slightly more in case of validation against iQuam data set. INSAT-3D is showing more underestimation with bias ranging from about -0.16 degrees C to -0.20 degrees C than MODIS sensor having bias in range of about 0.06 degrees C to -0.12 degrees C. All the three missions are slightly underestimating over open-ocean with bias ranging in 0-0.17 degrees C. INSAT-3D is significantly underestimating in-situ observations over the Arabian Sea (approximate bias = 0.27 degrees C). Seasonal validation analysis reveals relatively high retrieval error during monsoon season than premonsoon and post-monsoon seasons. MODIS sensor is showing significant underestimation during monsoon with bias ranging from approximately -0.29 degrees C to -0.58 degrees C. Overall, all the three missions are performing similarly well over the study area.
机译：已对印度洋周围水域上的INSAT-3D成像仪（4公里）和中分辨率成像光谱仪（MODIS）传感器安装在Aqua和Terra空间平台2级（1公里）海面温度（SSTskin）产品上的精度间接比较法，采用并置的大块原位测量（SSTdepth）进行3年（2013年10月至2016年10月）。统计结果表明，所有三颗卫星的均方根误差在0.600.70摄氏度左右。在针对iQuam数据集进行验证的情况下，发现误差略大。与具有约0.06摄氏度至-0.12摄氏度偏差的MODIS传感器相比，INSAT-3D的偏差在-0.16摄氏度至-0.20摄氏度的范围内显示出更多的低估。所有三个任务在开阔海洋中均被低估了偏差范围是0-0.17摄氏度。INSAT-3D大大低估了阿拉伯海的实地观测（近似偏差= 0.27摄氏度）。季节性验证分析显示，季风季节比季风季节和季风后季节的取水误差相对较高。 MODIS传感器在季风期间显示出明显的低估，其偏差范围从大约-0.29摄氏度到-0.58摄氏度。总体而言，这三个任务在研究区域中的表现均相似。

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  • 来源
    《International journal of remote sensing》 |2018年第6期|1575-1592|共18页
  • 作者

    Tyagi Geetika; Babu K. N.; Mathur A. K.; Solanki H. A.;

  • 作者单位

    Indian Space Res Org, Calibrat & Validat Div, Space Applicat Ctr, Ahmadabad, Gujarat, India;

    Indian Space Res Org, Calibrat & Validat Div, Space Applicat Ctr, Ahmadabad, Gujarat, India;

    Indian Space Res Org, Calibrat & Validat Div, Space Applicat Ctr, Ahmadabad, Gujarat, India;

    Gujarat Univ, Dept Environm Sci, Ahmadabad, Gujarat, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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