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Evaluation of VIIRS Ocean Color Products

机译：VIIRS海洋色彩产品评估

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摘要

The Suomi National Polar-orbiting Partnership (SNPP) was successfully launched on October 28, 2011. The Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi NPP, which has 22 spectral bands (from visible to infrared) similar to the NASA's Moderate Resolution Imaging Spectroradiometer (MODIS), is a multi-disciplinary sensor providing observations for the Earth's atmosphere, land, and ocean properties. In this paper, we provide some evaluations and assessments of VIIRS ocean color data products, or ocean color Environmental Data Records (EDR), including normalized water-leaving radiance spectra nL_w(λ) at VIIRS five spectral bands, chlorophyll-a (Chl-a) concentration, and water diffuse attenuation coefficient at the wavelength of 490 nm K_d(490). Specifically, VIIRS ocean color products derived from the NOAA Multi-Sensor Level-1 to Level-2 (NOAA-MSL12) ocean color data processing system are evaluated and compared with MODIS ocean color products and in situ measurements. MSL12 is now NOAA's official ocean color data processing system for VIIRS. In addition, VIIRS Sensor Data Records (SDR or Level-1B data) have been evaluated. In particular, VIIRS SDR and ocean color EDR have been compared with a series of in situ data from the Marine Optical Buoy (MOBY) in the waters off Hawaii. A notable discrepancy of global deep water Chl-a derived from MODIS and VIIRS between 2012 and 2013 is observed. This discrepancy is attributed to the SDR (or Level-1B data) calibration issue and particularly related to VIIRS green band at 551 nm. To resolve this calibration issue, we have worked on our own sensor calibration by combining the lunar calibration effect into the current calibration method. The ocean color products derived from our new calibrated SDR in the South Pacific Gyre show that the Chl-a differences between 2012 and 2013 are significantly reduced. Although there are still some issues, our results show that VIIRS is capable of providing high-quality global ocean color products in support of science research and operational applications.
机译：Suomi国家极地轨道合作伙伴关系（SNPP）于2011年10月28日成功启动。Suomi NPP上的可见红外成像辐射计套件（VIIRS）具有22个光谱带（从可见到红外），类似于NASA的中等分辨率成像光谱辐射仪（MODIS）是一种多学科传感器，可提供对地球大气，陆地和海洋特性的观测。在本文中，我们对VIIRS海洋颜色数据产品或海洋颜色环境数据记录（EDR）提供了一些评估和评估，包括在VIIRS五个光谱带，叶绿素a（Chl- a）浓度和在490 nm K_d（490）波长处的水扩散衰减系数。具体来说，评估了从NOAA多传感器第1级到第2级（NOAA-MSL12）海洋颜色数据处理系统得出的VIIRS海洋颜色产品，并将其与MODIS海洋颜色产品和原位测量进行了比较。 MSL12现在是NOAA的VIIRS官方海洋颜色数据处理系统。此外，还对VIIRS传感器数据记录（SDR或Level-1B数据）进行了评估。特别是，已将VIIRS SDR和海洋色EDR与来自夏威夷外海的海洋光学浮标（MOBY）的一系列原位数据进行了比较。在2012年至2013年期间，观察到全球深水Chl-a来自MODIS和VIIRS的显着差异。这种差异归因于SDR（或Level-1B数据）校准问题，尤其与551 nm的VIIRS绿带有关。为了解决此校准问题，我们将月球校准效果与当前的校准方法结合在一起，进行了自己的传感器校准。来自我们新校准的南太平洋涡流的SDR的海洋色产品显示，2012年和2013年之间的Chl-a差异显着降低。尽管仍然存在一些问题，但我们的结果表明，VIIRS能够提供高质量的全球海洋色彩产品，以支持科学研究和运营应用。

著录项

  • 来源
    《Ocean remote sensing and monitoring from space》|2014年|92610E.1-92610E.15|共15页
  • 会议地点 Beijing(CN)
  • 作者

    Menghua Wang; Xiaoming Liu; Lide Jiang; SeungHyun Son; Junqiang Sun; Wei Shi; Liqin Tan; Puneeta Naik; Karlis Mikelsons; Xiaolong Wang; Veronica Lance;

  • 作者单位

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,CIRA, Colorado State University, Fort Collins, CO, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,CIRA, Colorado State University, Fort Collins, CO, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,CIRA, Colorado State University, Fort Collins, CO, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,Global Science and Technology, Greenbelt, Maryland, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,CIRA, Colorado State University, Fort Collins, CO, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,CIRA, Colorado State University, Fort Collins, CO, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,CIRA, Colorado State University, Fort Collins, CO, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,Global Science and Technology, Greenbelt, Maryland, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,CIRA, Colorado State University, Fort Collins, CO, USA;

    NOAA/NESDIS Center for Satellite Applications and Research (STAR), E/RA3, 5830 University Research Ct., College Park, MD, USA,Global Science and Technology, Greenbelt, Maryland, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    VIIRS; MODIS; ocean color remote sensing; calibration; validation;

    机译：VIIRS； MODIS;海洋颜色遥感；校准;验证;

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