Thoughts on OIB Science Team KCJ

Acquisition Strategies OIB developed 3, basic acquisition strategies February 2011 I. Establish once the bedrock topography grid and ice surface sampling epoch. – a) 5 km or less spaced flight lines parallel to elevation contours near coast and seaward of ice margin. – b) km spaced flight lines parallel to elevation contours upstream. – c) Collect along center lines of most Greenland and Antarctic glaciers. II. Extend coverage and repeat elevation measurements using high elevation lidar – a) Fill regions between low elevation flight lines – b) Repeat acquisitions in succeeding years for dh/dt III. Use extended and base data to improve ICEsat slope errors, tie ICEsat and OIB to Cryosat, tie earlier data to ICEsat-2. July 2012 Seasonal Strategy 1) ICESat-2 continuity and a summer commissioning phase January ) OIB will fly a grid pattern the same glacier each season. 2) OIB will fill coverage gaps so that regions are sampled at least once during OIB 3) Remaining time devoted to acquisitions in support of ICESat and ICESat-2 science interpretation 4) After 1-3 are complete, use remaining time to support other programs. Re-evaluate the strategies as we approach ICESat

Assessments Science team validated data quality through intercomparisons (e.g. cross-overs). Should there be a focus on experiments designed to refine error model predictions? Science team struggled with assessing impacts? How best to assess progress towards objectives and scientific contribution?

Reporting Emphasize documenting impact of OIB on ICESat to ICESat-2 continuity. Will that reveal tweaks? Should there be an annual OIB report on missions, progress towards objectives, and science accomplishments?