DOI: 10.5194/tc-11-1111-2017
Scopus记录号: 2-s2.0-85019049100
论文题名: Validation of satellite altimetry by kinematic GNSS in central East Antarctica
作者: 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
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期: 3 起始页码: 1111
结束页码: 1130
语种: 英语
英文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75562
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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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
Recommended Citation:
Schröder L,, Richter A,, Fedorov D,et al. Validation of satellite altimetry by kinematic GNSS in central East Antarctica[J]. Cryosphere,2017-01-01,11(3)