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Assessment of Scientific Priorities for NSIDC DAAC Data

An assessment of scientific priorities for NSIDC DAAC data based on input from NSIDC and PoDAG scientists. Evaluation includes prioritization of data sets in various areas, limitations, and recommendations for future considerations.

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Assessment of Scientific Priorities for NSIDC DAAC Data

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  1. Scientific Priorities of NSIDC DAAC Data An assessment based on input from several NSIDC and PoDAG scientists Mark Parsons 26 April 2001

  2. Approach • Initial response to lack of explicit scientific priorities • 5 SPEC members and 4 PoDAG members prioritized DAAC data in four areas (1=hi, 3=lo) • Included future and current data sets • Limitations: • low PoDAG participation • data set titles only—many similar data sets PoDAG XVIII

  3. Average Priority Top 10 (n ≥ 12) PoDAG XVIII

  4. Process Studies Top 5 (n ≥ 3) PoDAG XVIII

  5. Monitoring Top 5 (n ≥ 3) PoDAG XVIII

  6. Modeling Top 5 (n ≥ 3) PoDAG XVIII

  7. Intrinsic Value Top 4 (n ≥ 4) PoDAG XVIII

  8. n ≥ 12 sea ice: all < 2 except charts, L2, and ESMR snow: all < 2 ice sheets: RAMP hi otherwise broad range PM Tb: only polar stereo < 2 AVHRR: all < 2 met/atmosphere: none n ≥ 9 sea ice: all < 2 except charts, L2, and ESMR snow: all < 2 ice sheets: RAMP hi otherwise broad range PM Tb: EASE slightly higher than PS AVHRR: all < 2 met/atmosphere : all < 2 Assessment of Heritage Data PoDAG XVIII

  9. Assessment of EOS Data • MODIS • well considered (large n) • sea ice low (>2) • snow med. high (~1.5) • albedo very high but small n (not planned) • AMSR • sea ice high (< 1.5) • SWE medium high (~1.5) • Tbs low but not well considered • level 3 much higher than level 2 • Non snow and ice products not considered PoDAG XVIII

  10. Assessment of EOS Data • GLAS • not well considered (small n) • Where considered all high except sea ice elevation • many products not considered especially L1 • L3 product not considered PoDAG XVIII

  11. What Next? • Map data sets to science questions and/or NRC report? • Consider relative priority within parameter groups? • Consider value of low level products vs. derived products? • You tell me. Does it matter? (yes) PoDAG XVIII

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