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地球科学进展  2015, Vol. 30 Issue (10): 1127-1143    DOI: 10.11867/j.issn.1001-8166.2015.10.1127
研究论文     
中国风云卫星与海洋卫星近海SST资料融合技术及应用研究
苗春生1, 程远1, 2, 王坚红1, 王兴1
1.南京信息工程大学,气象灾害预报预警与评估协同创新中心/气象灾害教育部重点实验室,江苏 南京 210044; 2. 扬州市气象局,江苏 扬州,225009
Data Fusion of Offshore SST from China FY and HY2 Satellites and Its Application
Miao chunsheng1, Cheng yuan1, 2, Wang jianhong1, Wang Xin1
1.NUIST,Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disasterof Ministry of Education,Nanjing, 210044,China; 2 Yangzhou Meteorological Beaure,Yangzhou,Jiangsu,225009 China
 全文: PDF(27259 KB)  
摘要:

选用美国LAPS(Local Analysis and Prediction System)数据融合系统对中国风云(FY)和海洋(HY)卫星在我国东部海域SST反演数据进行融合处理。该融合系统能够协调区域大气和下垫面海洋要素的时空特征,协调不同要素间的特征状态及匹配规律,生成适合多要素诊断计算的区域规范化数据。针对该系统没有现成的卫星SST反演数据输入接口,对船舶站SST反演数据接口进行了数值调整;依据FY卫星及HY卫星SST数据的不同特点,尤其是随卫星轨道发生的不同时空变化,在输入卫星反演数据至LAPS系统之前, 进行了多项预处理,包括对卫星反演数据异常值的判别与剔除、海陆边界要素异常梯度的鉴别与去除、不同卫星轨道坐标系网格要素的规范化处理、平滑去噪音等。经多项验证,预处理后的FY和HY卫星监测反演数据更有利于LAPS系统资料融合效果的正确性与合理性。再经LAPS系统的数据融合处理和各项验证,融合场既能保持卫星SST精细化的时空特征描述,也弥补了卫星资料非区域全覆盖的局限。将SST融合场对寒潮与冷空气过程中的东部海域海气影响进行热动力物理量时空变化诊断应用,对海面SST和感热通量的中尺度强度演变、南北空间变化差异均给出了量化描述。

关键词: FY卫星HY-2卫星LAPS系统海面温度SST数据融合    
Abstract:

Data fusion of SST from China FY and HY2 satellites was made by American LAPS(Local Analysis Prediction System). The system can ensure the spatial and temporal characteristics of different elements to fit each other in atmospheric motion,and it can provide fusion data with standard format and common corrodinate. The fusion data is suitable to join the quantitative diagnosetic analysis of variables. As the LAPS system has no a special input channel for satellite SST data, the numerical adjustment was done for data input of marine station. According to the different sensing principles of FY and HY2 satellites, and the characteristics of random spatiotemporal variation of satellite SST data, the inversion data of satellites were preprocessed by several steps, including outliers discrimination and elimination, the anomaly gradient discrimination and elimination, the numerical treatment of different satellite scanning grids, and data smoothing, etc. After the testing of different methods, it was verified that through preprocessing, the fusion effect of FY and HY2 satellites SST data was more reasonable and correct. Based on LAPS SST fusion and further statistical tests, it was confirmed that the SST fusion fields could keep the detail description of spatiotemporal features of SST distribution, and also resolved the problem of satillite SST with blank patches along the coastal zones. Furthermore, the SST fusion fields were applied to the diagnostic analysis of themodynamics spatiotemporal variance in air-sea synoptic process in cold waves and cold air invasion to Yellow sea and East China Sea. The results showed that the SST fusion could provide quantitative information and description for meso-scale strength variance, north-south varing difference of SST distribution and sensible heat flux in China offshore regions.

Key words: FY Satellite    HY2 Satellite    LAPS    Sea surface temperature    Data fusion
收稿日期: 2015-06-30 出版日期: 2015-10-20
:  P731  
基金资助:

国家自然科学基金面上项目“海洋中尺度涡旋动力结构与维持机制研究”(编号:41276033); 国家科技支撑计划项目“气象影视图形图像制作播出技术研究与应用”(编号:2012BAH05B01)资助

作者简介: 苗春生(1954-),男,内蒙古呼布人,教授,主要从事大气中小尺度动力学研究.
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引用本文:

苗春生, 程远, 王坚红, 王兴. 中国风云卫星与海洋卫星近海SST资料融合技术及应用研究[J]. 地球科学进展, 2015, 30(10): 1127-1143.

Miao chunsheng, Cheng yuan, Wang jianhong, Wang Xin. Data Fusion of Offshore SST from China FY and HY2 Satellites and Its Application. Advances in Earth Science, 2015, 30(10): 1127-1143.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2015.10.1127        http://www.adearth.ac.cn/CN/Y2015/V30/I10/1127

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