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FY-4A/AGRI海表温度产品和质量检验

崔鹏 王素娟 陆风 肖萌

崔鹏, 王素娟, 陆风, 等. FY-4A/AGRI海表温度产品和质量检验. 应用气象学报, 2023, 34(3): 257-269. DOI:  10.11898/1001-7313.20230301..
引用本文: 崔鹏, 王素娟, 陆风, 等. FY-4A/AGRI海表温度产品和质量检验. 应用气象学报, 2023, 34(3): 257-269. DOI:  10.11898/1001-7313.20230301.
Cui Peng, Wang Sujuan, Lu Feng, et al. FY-4A/AGRI sea surface temperature product and quality validation. J Appl Meteor Sci, 2023, 34(3): 257-269. DOI:  10.11898/1001-7313.20230301.
Citation: Cui Peng, Wang Sujuan, Lu Feng, et al. FY-4A/AGRI sea surface temperature product and quality validation. J Appl Meteor Sci, 2023, 34(3): 257-269. DOI:  10.11898/1001-7313.20230301.

FY-4A/AGRI海表温度产品和质量检验

DOI: 10.11898/1001-7313.20230301
资助项目: 

国家重点研究发展计划 2018YFC1506601

详细信息
    通信作者:

    王素娟, 邮箱: wangsj@cma.gov.cn

FY-4A/AGRI Sea Surface Temperature Product and Quality Validation

  • 摘要: 风云四号气象卫星A星(FY-4A)是我国第2代静止气象卫星首发星,搭载的先进静止轨道辐射成像仪AGRI是迄今为止我国静止轨道最先进的辐射成像仪。海表温度产品是FY-4A/AGRI基础定量产品之一,采用非线性海表温度算法在业务系统实时反演得到。以现场实测海表温度数据为参考,选择观测时间为30 min、观测空间距离为4 km的时空匹配窗口,对FY-4A/AGRI海表温度产品进行质量检验,评估结果表明:质量为优的像元平均偏差为-0.45~-0.42℃,标准差为0.81~0.88℃,相关系数在0.985以上。以Himawari-8/AHI海表温度数据为参考,按观测时间为1 h、空间距离为4 km的时空匹配窗口,对FY-4A/AGRI海表温度进行质量检验,质量为优的像元平均偏差为-0.26~-0.07℃,标准差为0.68~0.82℃,两者相关系数在0.985以上,达到0.001显著性水平。
  • 图  1  2021年7月—2022年6月FY-4A/AGRI海表温度和浮标海表温度偏差直方图

    Fig. 1  Histogram of difference between FY-4A/AGRI SST and buoy SST from Jul 2021 to Jun 2022

    图  2  2021年7月—2022年6月FY-4A/AGRI海表温度和浮标海表温度散点密度图

    Fig. 2  Scatter density map of FY-4A/AGRI SST and buoy SST from Jul 2021 to Jun 2022

    图  3  2021年7月—2022年6月5°×5°经纬度方块内FY-4A/AGRI海表温度和浮标海表温度偏差空间分布

    Fig. 3  Biases in 5°×5° square of FY-4A/AGRI SST against buoy SST from Jul 2021 to Jun 2022

    图  4  2021年7月—2022年6月以浮标海表温度为参考的FY-4A/AGRI海表温度误差时间序列

    Fig. 4  Time series of bias and standard deviation of FY-4A/AGRI SST relative to buoy SST from Jul 2021 to Jun 2022

    图  5  2021年7月—2022年6月以Himawari-8/AHI海表温度为参考的质量等级为优的FY-4A/AGRI海表温度误差时间序列

    Fig. 5  Time series of bias and standard deviation of excellent quality FY-4A/AGRI SST relative to Himawari-8/AHI SST from Jul 2021 to Jun 2022

    图  6  FY-4A/AGRI海表温度和Himawari-8/AHI海表温度散点图

    (a)2021年7月1日、8月1日和9月1日,(b)2021年10月1日、11月1日和12月1日,(c)2022年1月1日、2月1日和3月1日,(d)2022年4月1日、5月1日和6月1日

    Fig. 6  Scatter density map of FY-4A/AGRI SST and Himawari-8/AHI SST

    (a)1 Jul, 1 Aug and 1 Sep in 2021, (b)1 Oct, 1 Nov and 1 Dec in 2021, (c)1 Jan, 1 Feb and 1 Mar in 2022, (d)1 Apr, 1 May and 1 Jun in 2022

    表  1  FY-4A/AGRI NLSST算法误差信息

    Table  1  SST deviation of FY-4A/AGRI NLSST algorithm

    统计量 白天 夜间
    偏差/℃ 0.01 0.05
    绝对偏差/℃ 0.5 0.53
    标准差/℃ 0.61 0.66
    样本量 7381 7803
    下载: 导出CSV

    表  2  以浮标海表温度为参考的FY-4A/AGRI海表温度误差统计

    Table  2  Error information of FY-4A/AGRI SST relative to buoy SST

    时段 统计量
    白天 平均偏差/℃ -0.45 -1.00 -2.25
    标准差/℃ 0.81 0.94 1.94
    样本量 171473 81570 35607
    夜间 平均偏差/℃ -0.42 -0.99 -2.94
    标准差/℃ 0.88 1.03 1.99
    样本量 199364 92084 76844
    晨昏 平均偏差/℃ -0.42 -1.02 -2.80
    标准差/℃ 0.85 0.99 1.97
    样本量 28501 12386 8598
    下载: 导出CSV
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  • 收稿日期:  2022-12-30
  • 修回日期:  2023-03-13
  • 刊出日期:  2023-05-31

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