PARCA at NSIDC DAAC Where we are so far and where we might go Mark Parsons 25 April 2001

26 April 2001 PoDAG XVIII History n Program for Arctic Regional Climate Assessment: 25 investigators working to understand the Greenland Ice Sheet n PARCA PIs agreed to make their data available through their web sites by March 2001 n PIs to submit metadata to NSIDC n NSIDC to build “jump page” pointing to all PARCA data sites n NSIDC created a “godawful” form to facilitate metadata submission

26 April 2001 PoDAG XVIII Submission Status n Bromwich & Chen: Modelled Precipitation n Davis, et al.: Elevation Change of the Southern Greenland Ice Sheet from n Abdalati: Ice Sheet Melt Characteristics n Steffen & Box: Greenland Climate Network AWS Data n Thomas, et al.: Ice Velocities Around the 2000-meter Traverse n Thomas, et al.: Mass Balance Estimates by Comparing Ice Discharge Across the 2000-m Traverse n Hamilton & Whillans: Ice Sheet Mass Balance Using Precision GPS n Krabill: Ice Surface Elevations from NASA ATM Airborne Lidar

26 April 2001 PoDAG XVIII NSIDC Project Status n Data jump page available at n Single catalog entry in NSIDC catalog listed under many subject areas n Submitted one überDIF for all the PARCA data to GCMD n Implemented tracking script to measure success of page

26 April 2001 PoDAG XVIII Issues n Few submissions n Need to do some outreach n Will investigators be able and willing to support the data? n Should NSIDC take over these data for longer term archival?

26 April 2001 PoDAG XVIII Very rough cost estimate for archival n Qualifiers: – based only on the eight data sets – some missing ones bigger and more complex – only considers initial cost of ingest, documentation, etc. – does not consider ongoing maintenance and support – assumes active support from Pis to develop documentation n Consider low and high levels of service: primary difference is level of documentation and user services review

26 April 2001 PoDAG XVIII Handwaving cost estimate