GFO Cal/Val MeetingSilver Spring, Md12 June 2001

J. McMillanSoftware Process Engineering Consulting Services

Fee Determination AssessmentsFee determinationCrossover residual RMSRA noise estimateData coverage estimateData analysis and quality assuranceTiming and sizing anomaliesCrossover residual analysisOrbit quick-look assessmentRA noise trend analysis (v. SWH)

Fee DeterminationCrossover Residual RMSMethodology fixed by contractNOAA crossover location templateData editing criteriaLatitude outside 55UT 1/12 land maskTiming anomaliesWFF Quality Word criteriaSSHustd 15 cm

Fee DeterminationCrossover Residual RMS (cont.)

Fee DeterminationRA Noise EstimateMethodology fixed by contract (R. Sailor spectral analysis technique)Data editing criteria - same as crossover residual RMS plusAGC blooms (o 16 db)Non-colinear passesColinear passesw/o sufficient geoid signalw/o duration 2 min (no interpolation)w/ average SWH 2.0 m (both passes)

Fee DeterminationRA Noise Estimate (cont.) Cycles 00/01

Fee DeterminationRA Noise Estimate (cont.)

Fee DeterminationData Coverage EstimateMethodology: comparison with NOAA crossover locationsMissing crossovers broken down byMissing data (gap in NGDR)RA not in fine trackOther WFF Quality Word editing criteria

Fee DeterminationData Coverage (cont.)

Data Analysis and QATiming and Sizing AnomaliesTiming anomalies - 2 types discoveredt 0.98 sec.Self-correctingNot yet fixedOccurs over water as well as landNumerous occurrences in Cycle 03After Cycle 03, occurs 1 to 3 times per CycleNegative tFixed by Ball after Cycle 05Size anomalies - compare gfoM & gfoo

Data Analysis and QACrossover Residual Analysis

Data Analysis and QAOrbit Quick-Look AssessmentCrossover residual daily histogram3-Day crossover residual analysisSSHc - MSS

Data Analysis and QARA Noise Trend Analysis (v. SWH)