DLR-EOC Contributions to Spaceborne Polar Observing Systems

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1 DLR-EOC Contributions to Spaceborne Polar Observing Systems M. Gottwald DLR-IMF Polar Space Task Group, GSFC, 29 September 1 October 2014

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5 Polar Activities status GARS O Higgins new DLR junior research group new facility Maritime Safety TopoSAR (A. Roth) snow cover (A. Dietz) TerraSAR-X / TanDEM-X status & acquisitions over ice sheets (D. Floricioiu) Slide 5

6 Status GARS O Higgins GARS O Higgins located at the northern tip of Antarctic Peninsula established in 1991, permanent occupancy since 2010 planned refurbishment of receiving station mid-term goal: from German Antarctic Receiving Station to German Antarctic Research Station collaborations with polar research institutions and universities, e.g. AWI, University Santiago de Chile, etc. contact: Kathrin Höppner (kathrin.hoeppner@dlr.de) Slide 6

7 Stop at King George Island (KGI) Base Frei / Escudero (Chile) G A R O Higgins 63 19'16.04"S 57 54'4.31"W A n t a r c t i c a GARS O Higgins via KGI by Twin Otter, Heli or ship DLR Slide 7

8 Junior Research Group Antarctic Penninsula topic: study of glaciological and atmospheric processes triggering change at the Antarctic Peninsula tasks 3D temperature distribution troposphere mesosphere development and operation of sensors for atmospheric sounding (e.g. OH spectrometer) reprocessing of ERS SAR data received at O Higgins analysis of reprocessed SAR data (ice flow, coverage, etc.) NRT sea ice monitoring for Antarctic Peninsula area contact: Kathrin Höppner (kathrin.hoeppner@dlr.de) Slide 8

9 Facility Maritime Safety descendant from group SAR oceanography relocated from Oberpfaffenhofen to Bremen - NRT services (NZ) ship detection in preparation iceberg detection oil spill detection wind and waves ice classification campaign support contact: Anja Frost (anja.frost@dlr.de) Slide 9

10 Iceberg detection within 20 minutes section of a TerraSAR-X Stripmap image (Disko Bay / 23rd April 2013) 1 km comparison of TerraSAR-X images taken over the Grand Banks with detections of airborne International Ice Patrol (IIP) ongoing Slide 10

11 Campaign Support NRT delivery during Polarstern campaigns shiptrack 21/12/ /02/2014 Slide 11

12 Ice Classification Akademik Shokalskiy 10 days in pack ice 30/12/ :01 UTC TSX ScanSAR image fast ice pack ice open water and floating ice sheet S. Lehner, T. Krumpen, A. Frost, R. Ressel, T.E. Busche, E. Schwarz, First Tests on Near Real Time Ice Type Classification in Antarctica, Geoscience and Remote Sensing Symposium (IGARSS), 2014 Slide 12

13 TopoSAR in the Arctic Region (1) TerraSAR-X improved land cover classification water/ice classification (tundra and coastline) TanDEM-X vulnerability of coastal areas water mask details to be provided at SAR Coordination Working Group meeting contact: Achim Roth Slide 13

14 TopoSAR in the Arctic Region (2) Slide 14

15 MacKenzie Delta: East MacKenzie Delta: East Channel Channel TerraSAR-X, StripMap HH/VV TerraSAR-X, StripMap HH/VV Slide 15

16 TanDEM-X Digital Elevation Model Data Tobias Ullmann University of Würzburg Slide 16

17 TopoSAR in the Arctic Region Slide 17

18 TanDEM-X Water Area Mask North America TanDEM-X Water Area Mask Ontario Slide 18

19 Global Snow Pack early season (SCD ES ), late season (SCD LS ), and overall snow cover duration (SCD) for each hydrological year data sources MODIS AVHRR current results globally Central Asia European part of Russia contact: Andreas Dietz Slide 19

20 2010/2011 Slide 20

21 TerraSAR-X and TanDEM-X satellite missions update & data acquisitions over the ice sheets Dana Floricioiu German Aerospace Center (DLR), Remote Sensing Technology Institute, Oberpfaffenhofen, Germany Slide 21

22 TerraSAR-X Mission Status will operate at least until December 2015 Wide ScanSAR NE Greenland, Waltershausen Glacier TSX-1 & TDX-1 AO for utilisation of the new modes of TerraSAR-X (closed in April 2014): Starring spotlight (ST) < 25 cm azimuth resolution; 2 x 4 km 2 Wide ScanSAR (WS) (6 beam ScanSAR); 40 m azimuth resolution WS suited for large ice covered areas (ice sheets) Daugaard Jensen Glacier Slide 22

23 TerraSAR-X Data Acquisition & Monitoring (1) Greenland Ice Mapping Project (PI Ian Joughin) Outlet glaciers are monitored with TSX since January 2009 Jakobshavn Isbrae* in 2012/2013 on average 3 faster than 20 years ago record speed in 2012: 17 km/year TDM DEMs update the terminus topography (15 m a -1 surface lowering) [m/d] * Joughin et al, 2014, Brief Communication: Further summer speedup of Jakobshavn Isbræ, The Cryosphere, 8, , 2014 Slide 23

24 TerraSAR-X Data Acquisition & Monitoring (2) TerraSAR-X background mission: Antarctic Peninsula & Antarctic Ice Shelves Goals: Monitoring glaciological processes Mapping detailed structures of the glaciers PI Angelika Humbert (AWI Bremerhaven) Pine Island Glacier Iceberg B-31 moving away from the coast in November 2013 TerraSAR-X (TDX-1 satellite), ScanSAR mode Slide 22

25 TerraSAR-X Data Acquisition & Monitoring (3) TSX acquisition plan (left looking (LL), south of 80 S current status: very few TSX LL acquisitions possible in 2014, many orders cancelled: too close to or overlapping with an exclusion zone conflicting right- and left looking constraints 2 complete coverages of Recovery Glacier system N 0 km 100 GL TerraSAR-X velocity mosaic of Recovery Glacier 0.8 [m/d] 0.0 X Slide 25

26 Commissioning Phase 1 st Global Coverage 2 nd Global Coverage Difficult Terrain & Antarctica & Gap Filling 1st global coverage small baseline (~200 m) HoA ~ 50 m 2nd global coverage large baseline (~300 m) HoA ~ 35 m 3rd & 4th coverage Antarctica ( st campaign, nd campaign, e.g. leftlooking) difficult terrain & deserts ( st campaign, nd campaign, e.g. left-looking) change of imaging geometry through satellite swap on 6/8/2013 (back on 26/4/2014) combination of 1 st & 2nd: dual baseline phase unwrapping A D TanDEM-X Mission status D A Slide 26

27 TanDEM-X Science Phase (October December 2015) timeline (CP commissioning phase PC phase center) new interferometric operations modes for science users (AO closed on 30 June 2014) across-track baselines categories: small: m normal: m large: m very large: m huge: > 3000 m variation of the baselines for given geographical latitudes (e.g. Pursuit Monostatic, libration =0 ) B perp [m] S Look angles N Latitude [deg] Slide 27

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