气候变化领域集成服务门户(CCPortal): On the Surface Current Measurement Capabilities of Spaceborne Doppler Scatterometry

CCPortal

DOI	10.1029/2020GL090116
	On the Surface Current Measurement Capabilities of Spaceborne Doppler Scatterometry
	Wineteer A.; Torres H.S.; Rodriguez E.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	Wide-swath spaceborne Doppler scatterometry is a promising technique for the simultaneous measurement of global ocean surface winds and currents. The technique has been proven from airborne platforms, and here we use the lessons learned to examine a range of implications for a spaceborne system. We use a Doppler scatterometer simulator and a state-of-the-art global circulation model to generate surface current measurements and their random errors. We find that a feasible instrument could measure 5 km gridded surface currents with typical random errors between 10 and 25 cm/s. For higher wind speeds, the random error in surface current decreases logarithmically. This level of accuracy allows for the computation of surface current relative vorticity and horizontal divergence with typical wavelength resolutions of 15–30 and 25–60 km, respectively. Unlike previous studies, we find that these measurements do not require multiday averaging, opening up new avenues for monitoring global ocean circulation. © 2020. The Authors.
英文关键词	Electric current measurement; Instrument errors; Meteorological instruments; Ocean currents; Airborne platforms; Doppler scatterometer; Global circulation model; Global ocean circulation; Global ocean surface; Relative vorticity; Simultaneous measurement; Wavelength resolution; Random errors; Doppler radar; global ocean; instrumentation; measurement method; oceanic circulation; scatterometer; sea surface; simulator; wind velocity
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169486
作者单位	Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Wineteer A.,Torres H.S.,Rodriguez E.. On the Surface Current Measurement Capabilities of Spaceborne Doppler Scatterometry[J],2020,47(21).
APA	Wineteer A.,Torres H.S.,&Rodriguez E..(2020).On the Surface Current Measurement Capabilities of Spaceborne Doppler Scatterometry.Geophysical Research Letters,47(21).
MLA	Wineteer A.,et al."On the Surface Current Measurement Capabilities of Spaceborne Doppler Scatterometry".Geophysical Research Letters 47.21(2020).