气候变化领域集成服务门户(CCPortal): Validation of satellite altimetry by kinematic GNSS in central East Antarctica

CCPortal

DOI	10.5194/tc-11-1111-2017
	Validation of satellite altimetry by kinematic GNSS in central East Antarctica
	Schröder L.; Richter A.; Fedorov D.V.; Eberlein L.; Brovkov E.V.; Popov S.V.; Knöfel C.; Horwath M.; Dietrich R.; Matveev A.Y.; Scheinert M.; Lukin V.V.
发表日期	2017
ISSN	19940416
卷号	11 期号:3
英文摘要	Ice-surface elevation profiles of more than 30 000 km in total length are derived from kinematic GNSS (GPS and the Russian GLONASS) observations on sledge convoy vehicles along traverses between Vostok Station and the East Antarctic coast. These profiles have accuracies between 4 and 9 cm. They are used to validate elevation data sets from both radar and laser satellite altimetry as well as four digital elevation models. A crossover analysis with three different processing versions of Envisat radar altimetry elevation profiles yields a clear preference for the relocation method over the direct method of slope correction and for threshold retrackers over functional fit algorithms. The validation of CryoSat-2 low-resolution mode and SARIn mode data sets documents the progress made from baseline B to C elevation products. ICESat laser altimetry data are demonstrated to be accurate to a few decimetres over a wide range of surface slopes. A crossover adjustment in the region of subglacial Lake Vostok combining ICESat elevation data with our GNSS profiles yields a new set of ICESat laser campaign biases and provides new, independent evidence for the stability of the ice-surface elevation above the lake. The evaluation of the digital elevation models reveals the benefits of combining laser and radar altimetry. © Author(s) 2017.
学科领域	accuracy assessment; algorithm; correction; CryoSat; data processing; data set; elevation; Envisat; GNSS; ice cover; kinematics; radar altimetry; satellite altimetry; Antarctica; East Antarctica; East Antarctica; Lake Vostok; Vostok Station
语种	英语
scopus关键词	accuracy assessment; algorithm; correction; CryoSat; data processing; data set; elevation; Envisat; GNSS; ice cover; kinematics; radar altimetry; satellite altimetry; Antarctica; East Antarctica; East Antarctica; Lake Vostok; Vostok Station
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/119401
作者单位	Technische Universität Dresden, Institut für Planetare Geodäsie, Dresden, Germany; OAO Aerogeodeziya, St. Petersburg, Russian Federation; Polar Marine Geosurvey Expedition (PMGE), St. Petersburg, Russian Federation; Arctic and Antarctic Research Institute (AARI), St. Petersburg, Russian Federation
推荐引用方式 GB/T 7714	Schröder L.,Richter A.,Fedorov D.V.,et al. Validation of satellite altimetry by kinematic GNSS in central East Antarctica[J],2017,11(3).
APA	Schröder L..,Richter A..,Fedorov D.V..,Eberlein L..,Brovkov E.V..,...&Lukin V.V..(2017).Validation of satellite altimetry by kinematic GNSS in central East Antarctica.Cryosphere,11(3).
MLA	Schröder L.,et al."Validation of satellite altimetry by kinematic GNSS in central East Antarctica".Cryosphere 11.3(2017).