IPY STG SAR Workshop Day 1 Summary GIIPSY thematic science objectives presented along with a strawman acquisition strategy Agency representatives from ESA, DLR, CSA, NASA, reviewed IPY activities, capabilities and constraints. ASF provided information on behalf of JAXA. Ice Service operational requirements were reviewed

IPY STG SAR Workshop Day 1 Summary Comparison of thematic objectives and agency activities showed: –Substantial L and C-band SAR imagery being acquired over Antarctica. –Substantial C-band data for InSAR is being acquired over Greenland, Antarctica, Iceland, Svalbard, Arctic ice caps. X-band coverage for topography and velocity is beginning. InSAR and image data gaps in the Antarctic ‘pole hole’ –Extensive C-band SAR image data of Arctic and Antarctic Ice covered waters. Routine, robust, 3-6 days repeat cycle image acquisitions are not systematically acquired over the entire Arctic basin.

IPY STG SAR Workshop Day 1 Summary Cont –Seasonal snow cover at high latitudes yet to be addressed in a comprehensive fashion – over supersites. X-Band contribution? –C-band data for permafrost mapping likely to result from Envisat and R1 acquisition plans. Suggest a F1 acquisition mission complementary to the F1 coverage collected during the CIM – How about permafrost in Europe and Russia? How do you map permafrost change – support to science can be provided by space agencies –Limited lake and river freeze up R1 data acquired by Canadian Ice Service – how can we expand?

IPY STG SAR Workshop Data Gaps Coordinated Envisat/ERS/R1/TerraSAR observations could greatly increase Antarctic Insar coverage for ice sheet velocity from coast to pole. Complementary R1 and Envisat acquisitions could improve distribution of sea ice observations suitable for ice motion measurement. Reduced ground station support is a near term risk to IPY science community and sea ice operational communities L-band and RSAT1 coverage of Greenland and the Arctic Basin must be negotiated Large scale systematic X-band coverage of ice sheets and sea ice should be encouraged through a DLR IPY coordinated proposal.

IPY STG SAR Workshop Action Items Day 1 Action Item 1: Request systematic ALOS coverage of Greenland (InSAR) and the Arctic basin. Request that JAXA continue polar observations beyond the conclusion of IPY as their capabilites and mandate permit. (KJ) Provide similar refinement of acquisition plan to other space agencies (RK, IJ, KJ) Action Item 2: Request CSA and NASA to explore near term (1 month) approaches for using R-1 during the IPY to cover areas of the Arctic where there are Envisat data gaps. STG SAR coordination group to formulate a letter to be submitted to CSA, NASA external relations and MDA to avoid planning and data reception gap for RSAT 1 over both polar regions during IPY Action Item 3: Submit recommendation for R2 background mission and Government Allocation acquisition complementary to existing archive for IPY and which supplement gaps in other existing systems and archival data sets (science community + YC, RSJ, GR, KW) Action Item 4: Investigate possibilities for ENVISAT reception over Chukchi sea for IPY – Follow-on on discussions between ESA, ASF and KSAT for the reception during IPY Action Item5: For the science community – to develop and submit a proposal to DLR for IPY related data acquisition

IPY STG SAR Workshop Possible Approach for today Select 3-4 objectives that –Solve important, large scale science problem –Fills a gap in planned IPY coverage –Involves interagency collaboration –Agree on a list of recommendations to be submitted to STG3 for implementation

Arctic Sea Ice Observations Construct a C-Band coverage (3-day snapshots) for the Arctic ocean during the remaining of IPY (background missions, operation data acquisitions, etc.) –Coordinate between CSA and ESA Mission Management desks to elaborate a plan within the constraints (RSJ, HL, DL) –Provide science requirements (RK)

Antarctic Surface Velocity Winter Pole to Coast InSAR coverage of the Antarctic in high-res mode (3-4 consecutive cycles in asc and desc) –Use the coverage of the Continental Margin already planned by ESA (slide 18) –RSAT2 background mission (Left looking) (KJ, IJ, GR, RSJ) –Pole hole mapping with Terrasar (KJ, IJ, DF) –3-4 cycles of L-Band PALSAR –Provide science requirements (KJ, IJ)

Arctic Glaciers, Ice Caps and Sheets Greenland and Major Canadian Icefields of InSAR acquisition over 3-4 consecutive cycles of high-res in winter –Large-scale synoptic acquisition plan to be assessed by ESA and CSA for C-Band –Suggesting improved L-Band coverage –Fast moving glaciers – showed in CNES presentation – suggested coverage by Terrasar (DF) –Provide science requirements (IJ)

Science Super Sites Science community to identify supersites (look at what exist already) and determine acquisition parameters (frequency, resolution, etc.) for multi-pol and polarimetry data collection – for Jaxa, DLR and CSA to look at the possibility to program data acquisition Sea ice, snow water equivalent, glacier facies, permafrost

Day 2 Action Item STG SAR coordination group to submit a letter to CSA, NASA, and MDA senior External Relations managers to ensure RSAT1 availability and avoid receptions gaps over the polar regions