Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Helm Veit Veit.Helm@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/veit-helm.html 0000-0001-7788-9328 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 2026 ARK 1997: AWI airborne Radio-Echo Sounding data over the North GRIP ice core site in central Greenland and south-west Greenland (Nord GRIP project) dataset https://doi.org/10.1594/PANGAEA.995616 2026-06-19T11:12:12 This dataset contains airborne radar data acquired using the AWI EMR system (Nixdorf et al., 1999) during the Arctic season of 1997. The profiles extend in a grid around the North GRIP ice core site in central Greenland and in south-west Greenland. The data are available as netCDF files (including waveforms and metadata), KML files of the profile line locations, and quicklook images of the radargrams. Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html Franke Steven steven.franke@uni-tuebingen.de 0000-0001-8462-4379 Helm Veit Veit.Helm@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/veit-helm.html 0000-0001-7788-9328 Binder Tobias tobias.binder@awi.de 0000-0002-9826-8835 Drews Reinhard reinhard.drews@uni-tuebingen.de 0000-0002-2328-294X Eagles Graeme graeme.eagles@awi.de 0000-0001-5325-0810 Humbert Angelika Angelika.Humbert@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/angelika-humbert.html 0000-0002-0244-8760 Jansen Daniela Daniela.Jansen@awi.de 0000-0002-4412-5820 Jokat Wilfried wilfried.jokat@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/wilfried-jokat.html 0000-0002-7793-5854 Lambrecht Astrid astrid.lambrecht@badw.de Mieth Matthias Riedel Sven Miller Heinrich Heinrich.Miller@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/heinrich-miller.html 0000-0003-1015-2828 2024 Collection of datasets from AWI's radio-echo sounding systems on ice sheets and glaciers dataset bibliography https://doi.org/10.1594/PANGAEA.972094 Franke Steven steven.franke@uni-tuebingen.de 0000-0001-8462-4379 Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html Helm Veit Veit.Helm@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/veit-helm.html 0000-0001-7788-9328 Binder Tobias tobias.binder@awi.de 0000-0002-9826-8835 Nixdorf Uwe uwe.nixdorf@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/uwe-nixdorf.html 0000-0002-6288-4361 Miller Heinrich Heinrich.Miller@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/heinrich-miller.html 0000-0003-1015-2828 Humbert Angelika Angelika.Humbert@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/angelika-humbert.html 0000-0002-0244-8760 Jansen Daniela Daniela.Jansen@awi.de 0000-0002-4412-5820 Eagles Graeme graeme.eagles@awi.de 0000-0001-5325-0810 Eisermann Hannes heiserma@awi.de 0000-0002-5604-6484 Jokat Wilfried wilfried.jokat@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/wilfried-jokat.html 0000-0002-7793-5854 Ruppel Antonia Antonia.Ruppel@bgr.de 0000-0001-5101-411X Drews Reinhard reinhard.drews@uni-tuebingen.de 0000-0002-2328-294X Zuhr Alexandra alexandra.zuhr@uni-tuebingen.de 0000-0002-3861-365X Driemel Amelie amelie.driemel@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/amelie-driemel.html 0000-0001-8667-5217 Walter Andreas andreas.walter@awi.de 0000-0002-1153-7378 Konopatzky Peter peter.konopatzky@awi.de 0000-0003-3922-8398 Heß Robin Haas Antonie antonie.haas@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/antonie-haas.html 0000-0002-3771-4125 Koppe Roland roland.koppe@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/roland-koppe.html 0000-0002-2826-3932 Andreas Pascal H 0009-0003-1777-8708 Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X 2026 Review article: 30 years of airborne radar surveys on the Antarctic and Greenland ice sheets by the Alfred Wegener Institute journal article The Cryosphere 20(4) https://doi.org/10.5194/tc-20-2485-2026 2485-2530 Göktas Fidan Fidan.Traufetter@Shell.com 1999 Ergebnisse der Untersuchung des grönlandischen Inlandeises mit dem elektromagnetischen Reflexionsverfahren in der Umgebung von NGRIP (Results from airborne radio-echosounding of the Greenland icesheet in the vicinity of NGRIP) Berichte zur Polarforschung = Reports on Polar Research 336 https://doi.org/10.2312/BzP_0336_1999 97 pp Nixdorf Uwe uwe.nixdorf@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/uwe-nixdorf.html 0000-0002-6288-4361 Göktas Fidan Fidan.Traufetter@Shell.com 2001 Spatial depth distribution of the subglacial bed and internal layers in the ice around NGRIP, Greenland, derived with airborne RES journal article Journal of Applied Geophysics 47(3-4) https://doi.org/10.1016/S0926-9851(01)00062-3 175-182 Nixdorf Uwe uwe.nixdorf@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/uwe-nixdorf.html 0000-0002-6288-4361 Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html Meyer Uwe F Hempel L Jenett Martin Wachs P Miller Heinrich Heinrich.Miller@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/heinrich-miller.html 0000-0003-1015-2828 1999 The newly developed airborne radio-echo sounding system of the AWI as a glaciological tool journal article Annals of Glaciology 29 https://doi.org/10.3189/172756499781821346 231-238 O2A Registry Metadata for radar system Ice Thickness Radar 150 MHz at current version other Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research https://registry.o2a-data.de/items/6794 -53.252098 -42.316578 65.406593 75.095619 -47.47416358823529 70.01518202941178 1997-05-20T00:00:00 1997-06-20T00:00:00 NGRIP North Greenland Ice Core Project https://en.wikipedia.org/wiki/North_Greenland_Ice_Core_Project NGRIP_1997 1997-05-20T00:00:00 1997-06-20T00:00:00 POLAR 2 Steinhage, Daniel NGRIP_1997_01a 67.011887 -50.695793 Davis Strait 1997-05-21T14:35:18 67.01181 -50.695263 1997-05-21T16:50:40 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_01b 66.21669 -44.549225 Greenland 1997-05-21T20:39:13 67.012009 -50.696304 1997-05-21T22:14:38 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_02 67.011398 -50.69553 Davis Strait 1997-05-23T15:58:54 66.530708 -47.100006 1997-05-23T17:49:52 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_03 67.013603 -50.69347 Davis Strait 1997-05-24T19:43:36 67.030403 -50.564602 1997-05-24T22:59:50 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_04 67.011642 -50.695084 Davis Strait 1997-05-30T11:25:26 65.406593 -53.252098 1997-05-30T13:37:48 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_05 67.011734 -50.695889 Davis Strait 1997-06-03T14:46:40 66.702286 -51.695042 1997-06-03T20:06:26 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_06 67.011421 -50.695992 Davis Strait 1997-06-09T16:13:55 67.279465 -48.951801 1997-06-09T20:25:16 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_07a 67.014397 -50.692123 Davis Strait 1997-06-13T16:19:13 69.553574 -49.639008 1997-06-13T20:06:55 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_07b 67.005051 -51.017094 Davis Strait 1997-06-13T22:29:21 66.924164 -51.049496 1997-06-13T22:53:54 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_08 67.011497 -50.696014 Davis Strait 1997-06-14T13:32:00 75.088257 -42.35598 1997-06-14T17:33:59 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_09 74.985855 -42.497765 Greenland 1997-06-15T13:44:39 70.295097 -49.84589 1997-06-15T15:59:09 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_11 67.011505 -50.696186 Greenland 1997-06-16T14:47:57 75.09507 -42.317688 1997-06-16T18:13:13 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_13 75.095619 -42.31683 Greenland 1997-06-17T00:02:50 75.095291 -42.316578 1997-06-17T03:44:57 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_14 75.095612 -42.317665 Greenland 1997-06-17T12:52:13 75.095268 -42.31749 1997-06-17T17:29:20 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_15 75.095253 -42.317429 Greenland 1997-06-17T19:56:01 75.095238 -42.317593 1997-06-18T00:29:41 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_16 75.095161 -42.318687 Greenland 1997-06-18T11:30:07 75.095345 -42.317654 1997-06-18T15:47:16 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC NGRIP_1997_17 75.095444 -42.317863 Greenland 1997-06-18T17:49:40 69.411842 -50.78043 1997-06-18T20:51:33 NGRIP_1997 NGRIP_1997 1997-05-20T00:00:00 1997-05-20 1997-06-20T00:00:00 1997-06-20 POLAR 2 Steinhage, Daniel Steinhage, Daniel POLAR 2 Aircraft AC 266 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Project PI: Daniel Steinhage (AWI) Contact persons for AWI Radio-echo sounding data: Daniel Steinhage (daniel.steinhage@awi.de), Veit Helm (veit.helm@awi.de), Olaf Eisen (olaf.eisen@awi.de) The data are available as netCDF files, KML files, and quicklook images (JPEGs) of the radargrams. -- The netCDF files contain the following variables: altitude: Platform altitude (WGS84) in meters bed_elevation: bed elevation for each trace (using no firn correction and permitivity of ice: 3.15) in meters bed_pick: picked bed location for each trace, expressed as twt in seconds data: radar data data_agc: scaled radar data using automatic gain control (AGC) distance: Along-track distance in meters ice_thickness: ice thickness for each trace (using no firn correction and permitivity of ice: 3.15) in meters lat: Latitude in decimal degrees lon: Longitude in decimal degrees range: Range between sensor and surface in meters spacing: along track trace to trace spacing in meters surface: surface elevation derived from radar (WGS84) in meters surface_pick: picked surface reflection in two-way travel time in seconds time: Seconds of day twt: Two-way travel time (twt) in seconds -- The KML files are in EPSG:4326, and the quicklook images show the AGC product of the radargram. Season Season Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html Season Profile ID Profile ID Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html Profile ID Instrument Instrument Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html Instrument Radar product Radar prod Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html Radar prod netCDF file netCDF https://doi.org/10.5065/D6H70CW6 Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] https://doi.org/10.3189/172756499781821346 Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html netCDF netCDF file (File Size) netCDF (Size) Bytes https://doi.org/10.5065/D6H70CW6 Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] https://doi.org/10.3189/172756499781821346 Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html netCDF (Size) [Bytes] GIS file GIS Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] https://doi.org/10.3189/172756499781821346 Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html KML Files GIS Image IMAGE Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] https://doi.org/10.3189/172756499781821346 Steinhage Daniel Daniel.Steinhage@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/daniel-steinhage.html Quicklook IMAGE CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable AWI EMR Greenland ice cores Greenland ice sheet Ice core NGRIP NorthGRIP ice core Polar 2 radio-echo sounding author10398 author104825 author10505 author113739 author113740 author24633 author26346 author27488 author30625 author33194 author33291 author36179 author36180 author36716 author36717 author40917 author51121 author52499 author53726 author56843 author56845 author59362 author62 author699 author72169 author72859 author72860 author78245 author79235 author855 author99244 basis4669 campaign3380253 campaign34165 curlevel30 event2829616 event2829617 event2829618 event2829619 event2829620 event2829621 event2829622 event2829623 event2829624 event2829625 event2829626 event2829627 event2829628 event2829629 event2829630 event2829631 event2829632 geocode1599 geocode1600 geocode1601 inst32 journal1111 journal16570 journal4140 journal8090 license21 method10713 method12358 param150836 param16118 param513666 param516439 param541163 param54969 param87498 pi26346 project4018 ref102460 ref130079 ref136739 ref139947 ref21823 refds972094 term20851 term23768 term47590 term49926 term51910 term69242 term70496 term70706 term71527 term75171