气候变化领域集成服务门户(CCPortal): Cross-platform calibration of SMMR, SSM/I and AMSR-E passive microwave brightness temperature

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DOI	10.1117/12.873150
	Cross-platform calibration of SMMR, SSM/I and AMSR-E passive microwave brightness temperature
	Dai, Liyun; Che, Tao
发表日期	2010
ISSN	0277-786X
EISSN	1996-756X
卷号	7841
英文摘要	The long time series of passive microwave satellite data (SMMR, SSM/I and AMSR-E) have provided important information about the earth surface science and climate research in the past three decades. Due to the update of satellite-based radiometers and their platforms, some systematic parameters are different, and there are biases among brightness temperature in different periods, which lead to inaccuracy of some parameters' retrieval. In order to obtain consistent brightness temperature datasets, and provide convenience for the researchers using these data, it is necessary to calibrate the brightness temperature from different sensors. Considering the difference between the variance of brightness temperature from different sensors on cold and warm region at the cross time, this paper analyzed the brightness temperature on the cold and warm region respectively. On the cold region, because the diurnal temperature variation is very small, the influence on brightness temperature caused by difference of the satellites overpass time during the overlap period can be ignored. The brightness temperature data at 18GHz and 37GHz channels of Nimbus-7 and 19GHz, 37GHz channels of DMSP on the Antarctic or the Greenland glacier during the overlap period were analyzed. On the warm region, due to the reason that the daily variance of temperature contributes a lot to the difference of brightness temperature from different sensors during the overlap period, the diurnal cycle of surface temperature on the Sahara desert region was analyzed, and base on it, the influence of temperature to brightness temperature was eliminated. Finally, considering the two regions, the cross coefficients of calibration were estimated.
英文关键词	Brightness temperature; Passive microwave; Cross-platform calibration; diurnal cycle of temperature; SMMR; SSM/I
WOS研究方向	Remote Sensing ; Optics ; Imaging Science & Photographic Technology
WOS类目	Remote Sensing ; Optics ; Imaging Science & Photographic Technology
WOS关键词	TIME-SERIES ; ANTARCTICA ; MELT ; SOIL ; F11
WOS记录号	WOS:000287764600002
来源期刊	SIXTH INTERNATIONAL SYMPOSIUM ON DIGITAL EARTH: DATA PROCESSING AND APPLICATIONS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/241005
作者单位	[Dai, Liyun; Che, Tao] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Dai, Liyun,Che, Tao. Cross-platform calibration of SMMR, SSM/I and AMSR-E passive microwave brightness temperature[J]. 中国科学院西北生态环境资源研究院,2010,7841.
APA	Dai, Liyun,&Che, Tao.(2010).Cross-platform calibration of SMMR, SSM/I and AMSR-E passive microwave brightness temperature.SIXTH INTERNATIONAL SYMPOSIUM ON DIGITAL EARTH: DATA PROCESSING AND APPLICATIONS,7841.
MLA	Dai, Liyun,et al."Cross-platform calibration of SMMR, SSM/I and AMSR-E passive microwave brightness temperature".SIXTH INTERNATIONAL SYMPOSIUM ON DIGITAL EARTH: DATA PROCESSING AND APPLICATIONS 7841(2010).