气候变化领域集成服务门户(CCPortal): Estimating instantaneous sea-ice dynamics from space using the bi-static radar measurements of Earth Explorer 10 candidate Harmony

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DOI	10.5194/tc-15-3101-2021
	Estimating instantaneous sea-ice dynamics from space using the bi-static radar measurements of Earth Explorer 10 candidate Harmony
	Kleinherenbrink M.; Korosov A.; Newman T.; Theodosiou A.; Komarov A.S.; Li Y.; Mulder G.; Rampal P.; Stroeve J.; Lopez-Dekker P.
发表日期	2021
ISSN	19940416
起始页码	3101
结束页码	3118
卷号	15 期号:7
英文摘要	This article describes the observation techniques and suggests processing methods to estimate dynamical sea-ice parameters from data of the Earth Explorer 10 candidate Harmony. The two Harmony satellites will fly in a reconfigurable formation with Sentinel-1D. Both will be equipped with a multi-angle thermal infrared sensor and a passive radar receiver, which receives the reflected Sentinel-1D signals using two antennas. During the lifetime of the mission, two different formations will be flown. In the stereo formation, the Harmony satellites will fly approximately 300km in front and behind Sentinel-1, which allows for the estimation of instantaneous sea-ice drift vectors. We demonstrate that the addition of instantaneous sea-ice drift estimates on top of the daily integrated values from feature tracking have benefits in terms of interpretation, sampling and resolution. The wide-swath instantaneous drift observations of Harmony also help to put high-temporal-resolution instantaneous buoy observations into a spatial context. Additionally, it allows for the extraction of deformation parameters, such as shear and divergence. As a result, Harmony's data will help to improve sea-ice statistics and parametrizations to constrain sea-ice models. In the cross-track interferometry (XTI) mode, Harmony's satellites will fly in close formation with an XTI baseline to be able to estimate surface elevations. This will allow for improved estimates of sea-ice volume and also enables the retrieval of full, two-dimensional swell-wave spectra in sea-ice-covered regions without any gaps. In stereo formation, the line-of-sight diversity allows the inference of swell properties in both directions using traditional velocity bunching approaches. In XTI mode, Harmony's phase differences are only sensitive to the ground-range direction swell. To fully recover two-dimensional swell-wave spectra, a synergy between XTI height spectra and intensity spectra is required. If selected, the Harmony mission will be launched in 2028. © 2021 Marcel Kleinherenbrink et al.
英文关键词	abundance estimation; detection method; estimation method; measurement method; radar; sea ice; Satellites
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202350
作者单位	Geoscience and Remote Sensing, Delft University of Technology, Delft, Netherlands; Nansen Environmental and Remote Sensing Center, Bergen, Norway; Centre for Polar Observation and Modelling, University College London, London, United Kingdom; Data Assimilation and Satellite Meteorology Research Section, Environment and Climate Change Canada, Ottawa, Canada; Institut des Géosciences de l'Environnement, CNRS, Grenoble, France
推荐引用方式 GB/T 7714	Kleinherenbrink M.,Korosov A.,Newman T.,et al. Estimating instantaneous sea-ice dynamics from space using the bi-static radar measurements of Earth Explorer 10 candidate Harmony[J],2021,15(7).
APA	Kleinherenbrink M..,Korosov A..,Newman T..,Theodosiou A..,Komarov A.S..,...&Lopez-Dekker P..(2021).Estimating instantaneous sea-ice dynamics from space using the bi-static radar measurements of Earth Explorer 10 candidate Harmony.Cryosphere,15(7).
MLA	Kleinherenbrink M.,et al."Estimating instantaneous sea-ice dynamics from space using the bi-static radar measurements of Earth Explorer 10 candidate Harmony".Cryosphere 15.7(2021).