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中国农学通报 ›› 2015, Vol. 31 ›› Issue (28): 195-200.doi: 10.11924/j.issn.1000-6850.casb15050022

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

基于FY-3/VIRR数据的山东省地表温度反演及应用研究

李 峰1,曹张驰2,赵 红1,赵玉金1,商 林1   

  1. (1山东省气候中心,济南 250031;2临沂市气象局,山东临沂 276000)
  • 收稿日期:2015-05-06 修回日期:2015-06-17 接受日期:2015-06-25 出版日期:2015-10-27 发布日期:2015-10-27
  • 通讯作者: 李峰
  • 基金资助:
    山东省气象局青年科研基金“基于遥感技术的玉米种植面积估算研究”(2014SDQN04);淮河流域气象开放研究基金“基于FY-3数据的农田干旱遥感监测模型研究”(HRM201402)。

Land Surface Temperature Retrieval in Shandong Province Based on
FY-3/VIRR Data and Its Application

Li Feng1, Cao Zhangchi2, Zhao Hong1, Zhao Yujin1, Shang Lin1   

  1. (1Shandong Provincial Climate Center, Jinan 250031;2Linyi Meteorological Bureau, Linyi Shandong 276000)
  • Received:2015-05-06 Revised:2015-06-17 Accepted:2015-06-25 Online:2015-10-27 Published:2015-10-27

摘要: 为了检验FY-3/VIRR数据地表温度反演精度,本研究基于FY-3/VIRR数据,选用改进型的Becker和Li分裂窗地表温度反演算法和像元二分法,对山东区域春、夏、秋、冬四季代表月份(4月、7月、10月和1月)分别进行地表温度和植被覆盖度反演,并将反演的地表温度TLS与山东省气象局120个大监站的准同步空气温度Ta和0 cm地温TS进行相关性分析。结果表明:利用FY-3/VIRR数据反演的山东省地表温度与地面实际情况基本吻合,能直观反映山东地区地表温度的空间分布特征,且与植被覆盖度呈明显负相关关系。同时,对于非均匀下垫面,反演的地表温度TLS与空气温度Ta和0 cm地温TS的相关性都不好,不同季节的相关系数差异较大,但(TS-Ta)与(TS-TLS)存在显著线性正相关关系,且相关系数稳定,不同季节的样本判定系数R2都达到0.52以上。

关键词: 草地早熟禾, 草地早熟禾, 可溶性硅, 根灌, 白粉病, 病情指数

Abstract: The paper aims to test the accuracy of land surface temperature retrieval based on FY-3/VIRR data. The land surface temperature and vegetation coverage of Shandong in spring, summer, autumn and winter (April, July, October and January) were retrieved by means of the improved Becker and Li split window algorithm and pixel dichotomy, using FY-3/VIRR data. The authors analyzed the correlations between land surface temperatures (TLS) retrieved from FY-3/VIRR data and synchronized air temperature (Ta) and 0 cm soil temperature (TS) at 120 weather stations of Shandong Meteorological Bureau. The results showed that: the land surface temperature of Shandong Province retrieved from FY-3/VIRR data was consistent with the actual ground condition and could reflect the land surface temperature distribution intuitively. Meanwhile the TLS had a significantly negative correlation with vegetation coverage. But for inhomogeneous land surface, the correlation coefficients between TLS and Ta and TS were unstable, and the correlation coefficient of different seasons had a great difference. But there was a stable linear positive correlation between (TS-Ta) and (TS-TLS), and the determination coefficients R2 of different seasons were greater than 0.52.