The glaciers climate change initiative: Methods for creating glacier area, elevation change and velocity products

被引：252

作者：

Paul, Frank ^{[1
]}

Bolch, Tobias ^{[1
]}

Kaab, Andreas ^{[2
]}

Nagler, Thomas ^{[3
]}

Nuth, Christopher ^{[2
]}

Scharrer, Killian ^{[3
]}

Shepherd, Andrew ^{[4
]}

Strozzi, Tazio ^{[5
]}

Ticconi, Francesca ^{[4
]}

Bhambri, Rakesh ^{[6
]}

Berthier, Etienne ^{[7
]}

Bevan, Suzanne ^{[8
]}

Gourmelen, Noel ^{[9
]}

Heid, Torborg ^{[2
]}

Jeong, Seongsu ^{[10
]}

Kunz, Matthias ^{[11
]}

Lauknes, Tom Rune ^{[12
]}

Luckman, Adrian ^{[13
]}

Boncori, John Peter Merryman ^{[14
]}

Moholdt, Geir ^{[15
]}

Muir, Alan ^{[16
]}

Neelmeijer, Julia ^{[17
]}

Rankl, Melanie ^{[18
]}

VanLooy, Jeffrey ^{[19
]}

Van Niel, Thomas ^{[20
]}

机构：

[1] Univ Zurich, Dept Geog, CH-8006 Zurich, Switzerland

[2] Univ Oslo, Dept Geosci, N-0316 Oslo, Norway

[3] Environm Earth Observat IT GmbH ENVEO, Innsbruck, Austria

[4] Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England

[5] Gamma Remote Sensing AG, Gumlingen, Switzerland

[6] Wadia Inst Himalayan Geol, Ctr Glaciol, Dehra Dun 248001, Uttar Pradesh, India

[7] CNRS, OMP, LEGOS, Toulouse, France

[8] Swansea Univ, Swansea, W Glam, Wales

[9] Univ Strasbourg, Inst Phys Globe Strasbourg, Strasbourg, France

[10] Ohio State Univ, Columbus, OH 43210 USA

[11] Newcastle Univ, Sch Civil Engn & Geosci, Newcastle Upon Tyne, Tyne & Wear, England

[12] Norut, Tromso, Norway

[13] Swansea Univ, Swansea, W Glam, Wales

[14] Ist Nazl Geofis & Vulcanol, Rome, Italy

[15] Scripps Inst Oceanog, La Jolla, GA USA

[16] Ctr Polar Observat & Modelling, London, England

[17] GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, Potsdam, Germany

[18] Univ Erlangen Nurnberg, Erlangen, Germany

[19] Univ N Dakota, Dept Earth Syst Sci & Policy, Grand Forks, ND 58201 USA

[20] CSIRO Land & Water, Wembley, WA, Australia

来源：

REMOTE SENSING OF ENVIRONMENT | 2015年 / 162卷

关键词：

Glacier area; Glacier elevation change; Glacier velocity; Optical and microwave remote sensing; Round robin experiment; Accuracy determination; Algorithm selection; LAND ICE MEASUREMENTS; MASS-BALANCE; BRITISH-COLUMBIA; SATELLITE DATA; INVENTORY; SURFACE; GREENLAND; FLOW; IMAGES; SHEET;

D O I：

10.1016/j.rse.2013.07.043

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Glaciers and their changes through time are increasingly obtained from a wide range of satellite sensors. Due to the often remote location of glaciers in inaccessible and high-mountain terrain, satellite observations frequently provide the only available measurements. Furthermore, satellite data provide observations of glacier characteristics that are difficult to monitor using ground-based measurements, thus complementing the latter. In the Glaciers_cci project of the European Space Agency (ESA), three of these characteristics are investigated in detail: glacier area, elevation change and surface velocity. We use (a) data from optical sensors to derive glacier outlines, (b) digital elevation models from at least two points in time, (c) repeat altimetry for determining elevation changes, and (d) data from repeat optical and microwave sensors for calculating surface velocity. For the latter, the two sensor types provide complementary information in terms of spatio-temporal coverage. While (c) and (d) can be generated mostly automatically, (a) and (b) require the intervention of an analyst. Largely based on the results of various round robin experiments (multi-analyst benchmark studies) for each of the products, we suggest and describe the most suitable algorithms for product creation and provide recommendations concerning their practical implementation and the required post-processing. For some of the products (area, velocity) post-processing can influence product quality more than the main-processing algorithm. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：408 / 426

页数：19

共 136 条

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