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NPP/J1 Algorithm Paradigm Shift

NPP/J1 Algorithm Paradigm Shift. IDPS Splinter May 10, 2011. Algorithm Paradigm Shift - Overview. Issue: Planned algorithm drops for 2011 and 2012: 2.1 Planned Drops are currently expected too early in the lifecycle when compared with reality

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NPP/J1 Algorithm Paradigm Shift

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  1. NPP/J1 Algorithm Paradigm Shift IDPS Splinter May 10, 2011

  2. Algorithm Paradigm Shift - Overview • Issue: Planned algorithm drops for 2011 and 2012: • 2.1 Planned Drops are currently expected too early in the lifecycle when compared with reality • 2.1 Planned Drops are assumed to be larger/more complex than the changes we’ll see from NPP Cal/Val • 2.1 Planned Drops are tied into 2.1 development timeframe, significantly lengthening their implementation/delivery schedule • Briefed at the IDPS Splinter on April 5, 2011 • Government confirmed the dates are unrealistic • Government provided very rough dates that are significantly farther out in the schedule (VIIRS and CrIS in particular would likely not close with 2.1 development schedule) • Government also confirmed their limited resources will be entirely consumed by NPP Cal/Val in the near term, and that any major changes to algorithms will likely occur on the NPP Cal/Val path vs. reactions to J1 sensor deltas

  3. Near-Term: Major Drops Currently Expected for NPP and J1 • EDR Algorithm Adjustments • Adjustments to VIIRS EDR Algorithms (part 2) • Adjustments to VIIRS EDR Algorithms (part 3) • Adjustments to CrIMSS EDR Algorithms • OMPS TC & NP EDR Algorithms • Changes to these algorithms will occur during NPP Cal/Val and subsequent operations, but they won’t arrive in bulk packages via the 2.1 Algorithm Drop Schedule • CrIMSS “State 2” will likely go into NPP processing (government won’t want to wait until 2017 to have them implemented and validated)

  4. PRO LRE ESLOC Hours (FY’11 – FY’16)

  5. Options • 1) Re-Baseline near-term drop hours (within WBS 4.1) associated with VIIRS, CrIMSS, OMPS to line up with when we expect unique J1 algorithm drops to be delivered FY14/15 • Pros: Moves hours out of ’11 - ’13 and in line with the projected work; Keeps all 2.1 Alg hours intact for later development • Cons: NPP Alg baseline will move ahead of 2.1 Alg baseline until 2.1 Alg work begins; PRO Development team will have a bathtub (4-6 heads) in summer of ’12 due to hours moving to the right; Alg drops will not happen as defined. • 2) Re-Purpose near-term drop hours (from WBS 4.1 to WBS 7.1) to line up with CalVal activities associated with NPP • Pros: Moves hours to where the actual ‘12/’13 algorithm work will be performed; Keeps NPP & 2.1 Algorithms in sync; Keeps PRO Alg staff in tact and working high priority tasks (Cal/Val) • Cons: Requires movement of some hours from Development (WBS 4.1) to Sustainment (WBS 7.1); Hours associated with these drops will not be available for future J1 work

  6. Backup

  7. Near-Term: Major Drops Currently Expected for NPP and J1 • EDR Algorithm Adjustments • Adjustments to VIIRS EDR Algorithms (part 2) • Adjustments to VIIRS EDR Algorithms (part 3) • Adjustments to CrIMSS EDR Algorithms • OMPS TC & NP EDR Algorithms • Changes to these algorithms will occur during NPP Cal/Val and subsequent operations, but they won’t arrive in bulk packages via the 2.1 Algorithm Drop Schedule • CrIMSS “State 2” will likely go into NPP processing (government won’t want to wait until 2017 to have them implemented and validated) • A-DCS, SARR/SARP, SEM Instrument Data • These are not on J1 anymore – can be deferred to J2 and DWSS • 5 days worth of NPP flight EVCDUs for all VCIDs from SVALBARD • These would be the proxy data for J1; a similar dataset will still need to be generated (we would likely participate in that via the Test Data Working Group) • Also need to consider the need for NPP test data derived from NPP operations • FTS LRD/HRD algorithms • This work will still exist and should probably be treated as development • (but it requires further refinement of the FTS strategy in general)

  8. Algorithm Paradigm Shift • 1) Replacement of near-term NPP and longer-term J1 algorithm drops with a continuum of smaller changes during NPP Cal/Val and Operations • 2) Deferment of applicable drops to the J2/DWSS timeframe (e.g., SEM-N) • 3) Need dates for real NPP data to serve: (a) NPP era testing; and (b) testing of coefficients and lookup tables based on J1 sensor characterization • 4) First-cut scheduling of an FTS branch, similar to NPP Sensor Characterization, assuming the same SLOC we had assumed before for FTS, concluding with a merging into the last pre-J1-launch maintenance build • 5) Synchronization of builds: this really has two phases: (a) Synchronization of early NPP operations builds with 2.1 development builds; and (b) Synchronization of later NPP builds with both 2.1 development *and* J1 sensor-characterization-based LUT and coefficient updates; this is where we'll need the "middle branch" methodology again

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