Evaluation of HY-2A scatterometer wind vectors using data from buoys, ERA-interim and ASCAT during 2012-2014

	Evaluation of HY-2A scatterometer wind vectors using data from buoys, ERA-interim and ASCAT during 2012-2014
	Xing, Jianyong 1; Shi, Jiancheng 1; Lei, Yonghui 1; Huang, Xiang-Yu 1; Liu, Zhiquan 1
刊名	Remote Sensing
	2016
卷号	8 期号:5
关键词	REMOTE-SENSING DATA TEMPERATURE CONDITION INDEXES PATTERN DECOMPOSITION METHOD AGRICULTURAL DROUGHT METEOROLOGICAL DROUGHT AVHRR DATA MODIS REFLECTANCE REGIONS CHINA
通讯作者	Lei, Yonghui (yonghui.lei@hotmail.com)
英文摘要	The first Chinese operational Ku-band scatterometer on board Haiyang-2A (HY-2A), launched in August 2011, is designed for monitoring the global ocean surface wind. This study estimates the quality of the near-real-time (NRT) retrieval wind speed and wind direction from the HY-2A scatterometer for 36 months from 2012 to 2014. We employed three types of sea-surface wind data from oceanic moored buoys operated by the National Data Buoy Center (NDBC) and the Tropical Atmospheric Ocean project (TAO), the European Centre for Medium Range Weather Forecasting (ECMWF) reanalysis data (ERA-Interim), and the advanced scatterometer (ASCAT) to calculate the error statistics including mean bias, root mean square error (RMSE), and standard deviation. In addition, the rain effects on the retrieval winds were investigated using collocated Climate Prediction Center morphing method (CMORPH) precipitation data. All data were collocated with the HY-2A scatterometer wind data for comparison. The quality performances of the HY-2A NRT wind vectors data (especially the wind speeds) were satisfactory throughout the service period. The RMSEs of the HY-2A wind speeds relative to the NDBC, TAO, ERA-Interim, and ASCAT data were 1.94, 1.73, 2.25, and 1.62 m· s-1, respectively. The corresponding RMSEs of the wind direction were 46.63°, 43.11°, 39.93°, and 47.47°, respectively. The HY-2A scatterometer overestimated low wind speeds, especially under rainy conditions. Rain exerted a diminishing effect on the wind speed retrievals with increasing wind speed, but its effect on wind direction was robust at low and moderate wind speeds. Relative to the TAO buoy data, the RMSEs without rain effect were reduced to 1.2m· s-1and 39.68° for the wind speed direction, respectively, regardless of wind speed. By investigating the objective laws between rain and the retrieval winds from HY-2A, we could improve the quality of wind retrievals through future studies. © 2016 by the authors.
学科主题	Remote Sensing
类目[WOS]	Remote Sensing
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:20162302468704
内容类型	期刊论文
源URL	[http://ir.radi.ac.cn/handle/183411/39225]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 2.100101, China 3. University of Chinese Academy of Sciences, Beijing 4.100049, China 5. Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, SOA, Beijing 6.100081, China 7. Joint Center for Global Change Studies (JCGCS), Beijing 8.100875, China 9. Centre for Climate Research Singapore, Meteorological Service Singapore, 537054, Singapore 10. National Center for Atmospheric Research, Boulder
推荐引用方式 GB/T 7714	Xing, Jianyong,Shi, Jiancheng,Lei, Yonghui,et al. Evaluation of HY-2A scatterometer wind vectors using data from buoys, ERA-interim and ASCAT during 2012-2014[J]. Remote Sensing,2016,8(5).
APA	Xing, Jianyong,Shi, Jiancheng,Lei, Yonghui,Huang, Xiang-Yu,&Liu, Zhiquan.(2016).Evaluation of HY-2A scatterometer wind vectors using data from buoys, ERA-interim and ASCAT during 2012-2014.Remote Sensing,8(5).
MLA	Xing, Jianyong,et al."Evaluation of HY-2A scatterometer wind vectors using data from buoys, ERA-interim and ASCAT during 2012-2014".Remote Sensing 8.5(2016).