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OMPS EDR and DIP Calibration and Validation Plan Readiness Review

OMPS EDR and DIP Calibration and Validation Plan Readiness Review . Lawrence Flynn NOAA August 16 , 2010 . Outline. Overview of Data Products Team Members’ Roles and Responsibilities Task Components. 2. OMPS Instrument Design. Total Ozone Mapper

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OMPS EDR and DIP Calibration and Validation Plan Readiness Review

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  1. OMPS EDR and DIPCalibration and Validation PlanReadiness Review Lawrence Flynn NOAA August 16, 2010

  2. Outline Overview of Data Products Team Members’ Roles and Responsibilities Task Components 2

  3. OMPSInstrument Design Total Ozone Mapper UV Backscatter, grating spectrometer, 2-D CCD TOMS, SBUV(/2), GOME(-2), OMI, SCIAMACHY 110 deg. cross track, 300 to 380 nm spectral, 1.1nm FWHM bandpass Nadir Profiler UV Backscatter, grating spectrometer, 2-D CCD SBUV(/2), GOME(-2), SCIAMACHY, OMI Nadir view, 250 km cross track, 270 to 310 nm spectral, 1.1 nm FWHM bandpass Limb Profiler UV/Visible Limb Scatter, prism, 2-D CCD array SOLSE/LORE, OSIRIS, SAGE III, SCIAMACHY Three 100-KM vertical slits, 290 to 1000 nm spectral The calibration concept uses working and reference solar diffusers.

  4. Overview of Data Products (1/2) • Southern Hemisphere Total ozone map from SBUV/2 for 10/13/2009 RGB Image shows dense smoke (high absorption) in northwest, north central and central coastal portions of image. • No KPPs in Atmospheric Ozone Discipline • Ozone • Total Column Ozone • Ozone Profile (DIP) • CrIS Ozone (DIP) • UV Index Forecast for October 27, 2009

  5. Overview of Data Products (2/2) • Total Column Ozone • Global coverage of atmospheric ozone column • Operational Assimilation (Weather and UV forecast) • Daily Maps (Ozone Hole/Layer monitoring) • Climate Data Records (Ozone Layer assessments) • UV Effective reflectivity IP • UV Aerosol Index IP • Ozone Vertical Profile Delivered IP • Layer amounts and mixing ratios • Mg II Solar Index • CrIS IR Ozone Delivered IP • Ozone total column and profile 5

  6. Team Members’ Roles & Responsibilities 6

  7. ScheduleOutline • Pre-Launch Phase (L-24M to L) • Develop Match-up and statistical analysis tools and readers • Implement and exercise forward models for radiative transfer • Create and manipulate sample, synthetic, and proxy SDR, EDR, and DIP data sets • Collect and exercise calibration parameters and instrument models • Implement alternative/heritage algorithms • Improve Ground-based assets operations and access • Early Orbit Check Out Phase (L to L+3M) • Check parameters and instrument behavior • Perform internal consistency checks • Provide feedback to SDR Team • Test tools and alternate algorithms with real data • Intensive Cal/Val Phase (L+3M to L+15M) • Perform external comparisons to satellite products • Perform sub-orbital comparison/validation • Provide feedback to IPO and NGAS • Evaluate product applications • Begin trending and automated monitoring

  8. SDR Tasks • Test OMPS_E1 Dark Signal, Noise, SAA • Test OMPS_E2 Working Solar • Test OMPS_E3 Reference Solar • Test OMPS_E4 Solar Ref/Work, SNR, Mg II • Test OMPS_E5 Earth EOF Patterns & SNR & SAA Filter • Test OMPS_E6 Earth Stray Light & Mg II • Test OMPS_E7 Intra-orbit l-scale

  9. EDR Tasks • Test OMPS_E8 V8 TOZ Internal Consistency • Test OMPS_E9 V8 PRO Internal Consistency • Test OMPS_E10 EDR consistency & residuals • Test OMPS_E11 Compare V8 TOZ and EDR • Test OMPS_E12 Compare V8 Pro and DIP • Test OMPS_E13 Evaluate Performance in Pacific Box • Test OMPS_E14 Satellite Intercomparisons (OMI, GOME-2, SBUV/2, MLS, CrIS)

  10. Trending Tasks • Test OMPS_E15 Implement GOME-2 and SBUV/2 ICVS monitoring for OMPS • Test OMPS_E16 Ground-based Match-Up • Test OMPS_E17 SNO (EOS Aura, NOAA-x, MetOP A) • Test OMPS_E18 Assimilation • Test OMPS_E19 ICVS trending • Test OMPS_E20 Solar and Mg II Trending • Test OMPS_E21 Continue Ground-based Val.

  11. Test OMPS_E1 Dark Signal • TEST DURATION AND DATA REQUIREMENTS: Door closed data in various orbits; first solar and earth data • OBJECTIVES: Establish dark current stability (look for RTS), SNRs for radiance and irradiance, and size of SAA effects. • DESCRIPTION: Exercise EOF, Nearest Neighbor, and outlier detection and removal tools • PREREQUISITES and/or CONSTRAINTS: Initial data can be taken with door closed. Check orbits for SAA locations. • RECOMMENDATIONs and/or COMMENTS: NONE • SUCCESS CRITERIA: Establish dark current levels and stability, radiance and irradiance SNRs, and charged particle effects locations and levels. • RESPONSIBLE PARTY: L. Flynn (D. Swales) • COMMAND RQMTS: • LAST UPDATE:July 28, 2010

  12. Test OMPS_E2 Working Solar • TEST DURATION AND DATA REQUIREMENTS: First sets of working solar diffuser spectra • OBJECTIVES: Establish baseline for solar spectra absolute, l-scale, and cross-track calibration for working diffuser. • DESCRIPTION: Compare to proxies and across track • PREREQUISITES and/or CONSTRAINTS: OMPS must be open, with diffuser operating, and measuring near terminator. • RECOMMENDATIONs and/or COMMENTS: Look for spectral features as viewing angles change. • SUCCESS CRITERIA: Establish solar spectral scales and calibration relative to SSBUV reference spectrum. • RESPONSIBLE PARTY: L. Flynn (J. Niu) • COMMAND RQMTS: Solar Calibration Working Diffuser • LAST UPDATE:July 28, 2010

  13. Test OMPS_E3 Reference Solar • TEST DURATION AND DATA REQUIREMENTS: First sets of reference solar diffuser spectra • OBJECTIVES: Establish baseline for solar spectra absolute, l-scale, and cross-track calibration for reference diffuser. • DESCRIPTION: Compare to proxies and across track • PREREQUISITES and/or CONSTRAINTS: OMPS must be open, with diffuser operating, and measuring near terminator. • RECOMMENDATIONs and/or COMMENTS: Look for spectral features as angles change. Compare to working. • SUCCESS CRITERIA: Establish solar spectral scales and calibration relative to SSBUV reference spectrum. • RESPONSIBLE PARTY: L. Flynn (J. Niu) • COMMAND RQMTS: Solar Calibration Reference Diffuser • LAST UPDATE:July 28, 2010

  14. Test OMPS_E4 W/R & Mg II • TEST DURATION AND DATA REQUIREMENTS: First sets of working and reference solar diffuser spectra • OBJECTIVES: Compare working/reference, establish SNR for solar, create Mg II index and check Scale Factors (SFs). • DESCRIPTION: Compare W/R, GOME-2 Mg II, & SBUV SFs. • PREREQUISITES and/or CONSTRAINTS: OMPS must be open, with diffuser operating, and measuring near terminator. • RECOMMENDATIONs and/or COMMENTS: Use results in Earth view Mg II and stray light Tests; need solar activity • SUCCESS CRITERIA: Establish working/reference calibration, begin Mg II Index record, check Scale Factors. • RESPONSIBLE PARTY: L. Flynn (J. Niu) • COMMAND RQMTS: Solar Diffuser Measurements • LAST UPDATE:July 28, 2010

  15. Test OMPS_E5 Earth Patterns • TEST DURATION AND DATA REQUIREMENTS: First orbits of Earth View SDRs • OBJECTIVES: Analyze SDR components, Establish Radiance SNRs, and test SAA filters. • DESCRIPTION: Decompose Earth SDR with EOF tools, analyze components, identify and remove noise and SAA effects. • PREREQUISITES and/or CONSTRAINTS: OMPS must be open and taking regular Earth radiance data • RECOMMENDATIONs and/or COMMENTS: Compare to GOME-2 results, coordinate with stray light and l-scale tests. • SUCCESS CRITERIA: Identify patterns, establish SNR levels, filter noise and SAA contamination. • RESPONSIBLE PARTY: L. Flynn (D. Swales) • COMMAND RQMTS: Standard Earth SDRs • LAST UPDATE:July 28, 2010

  16. Test OMPS_E6 Stray Light • TEST DURATION AND DATA REQUIREMENTS: First orbits of Earth View SDRs • OBJECTIVES: Test stray light models, identify stray light, create Earth-view Mg II Index. • DESCRIPTION: Exercise Nadir Mapper Stray light model, use correlation studies for Nadir Profiler, compute average radiances. • PREREQUISITES and/or CONSTRAINTS: OMPS must be open and taking regular Earth radiance data • RECOMMENDATIONs and/or COMMENTS: Compare to GOME-2 and SBUV/2 results, coordinate with EOF and measurement residual studies. Check for both in-band and out-of-band. • SUCCESS CRITERIA:Establish stray light levels,Evaluate Earth Mg II use for tracking solar signal variations • RESPONSIBLE PARTY: L. Flynn (J. Niu) • COMMAND RQMTS: Standard Earth SDRs • LAST UPDATE:July 28, 2010

  17. Test OMPS_E7 l-Scale • TEST DURATION AND DATA REQUIREMENTS: First orbits of Earth View SDRs • OBJECTIVES: Determine intra-orbit wavelength scale changes relative to solar. • DESCRIPTION: Exercise wavelength registration tools • PREREQUISITES and/or CONSTRAINTS: OMPS must be open and taking regular Earth radiance data • RECOMMENDATIONs and/or COMMENTS: Coordinate with EOF wavelength scale pattern and solar scale tests. • SUCCESS CRITERIA:Establish and model intra-orbit wavelength scale; correlate with instrument temperature telemetry. • RESPONSIBLE PARTY: L. Flynn (J. Niu) • COMMAND RQMTS: Standard Earth SDRs • LAST UPDATE:July 28, 2010

  18. Test OMPS_E8 V8 TOZ • TEST DURATION AND DATA REQUIREMENTS: First days of Earth View SDRs • OBJECTIVES: Determine V8 TOZ Product Behavior • DESCRIPTION: Use V8 TOZ to process OMPS NM SDR data. Evaluate TOZ, reflectivity, and residuals with test on next slide. • PREREQUISITES and/or CONSTRAINTS: OMPS must be open and taking regular Earth radiance data • RECOMMENDATIONs and/or COMMENTS: Coordinate with OMPS EDR, stray light, SNR, and V8 Pro tests. • SUCCESS CRITERIA:Demonstrate processing of OMPS SDRs with V8 TOZ; assess spatial and spectral internal consistency of products and reasonableness of values • RESPONSIBLE PARTY: L. Flynn (D. Swales) • COMMAND RQMTS: Standard Earth SDRs • LAST UPDATE:July 28, 2010

  19. Internal and Soft Calibration and Validation Sequence for TOZ Products 1. Check 331-nm reflectivity channel calibration by using global distributions of reflectivity – minimum ocean (4%) and land (1%) reflectivity, maximum global reflectivity and ice radiances (Greenland and Antarctica). 2. Check agreement between 360-nm reflectivity and 331-nm reflectivity for scenes with reflectivity greater than 80%. 3. Check agreement of all reflectivity channels. 4. Compute total ozone for nadir measurements from B-pair (317.5-nm and 331-nm) in the tropics and compare to expected values. 5. Check agreement of other ozone sensitive channels/pairs/ triplets with the B-pair results. Examine residuals. 6. Check agreement between zonal means at each satellite view angle and the nadir zonal means. 7. Compare ozone and reflectivity results for different channels and pairs as functions of solar zenith angles and reflectivity. Methods developed at NASA GSFC over the last 30 years.

  20. Test OMPS_E9 V8 Pro • TEST DURATION AND DATA REQUIREMENTS: First days of Earth View SDRs • OBJECTIVES: Determine V8 Pro Product Behavior • DESCRIPTION: Use V8 Pro to process OMPS NM & NP SDR data. Evaluate profiles, reflectivity, and residuals with test on next slide. • PREREQUISITES and/or CONSTRAINTS: OMPS must be open and taking regular Earth radiance data • RECOMMENDATIONs and/or COMMENTS: Coordinate with OMPS EDR, stray light, SNR, and V8 TOZ tests. • SUCCESS CRITERIA:Demonstrate processing of OMPS SDRs with V8 Pro; assess spatial and spectral consistency of products and reasonableness of values • RESPONSIBLE PARTY: L. Flynn (E. Beach) • COMMAND RQMTS: Standard Earth SDRs for OMPS NM & NP • LAST UPDATE:July 28, 2010

  21. Internal and Soft Calibration and Validation Sequence for V8 TOZ • Same checklist as TOZ. • Check initial residuals for Equatorial zonal means with screen for aerosols and SAA • Check final residuals for size and relative bias • Compare best and profile total ozone • Compare retrieved versus a priori profiles • Compare ascending/descending by using Q equivalence across the spectrum for all ascending/descending

  22. Test OMPS_E10 TOZ EDR • TEST DURATION AND DATA REQUIREMENTS: First days of Earth View SDRs and EDRs • OBJECTIVES: Determine EDR TOZ Product Behavior • DESCRIPTION: Evaluate OMPS TOZ EDR products. Apply TOZ internal evaluation list on slide after OMPS_E8. • PREREQUISITES and/or CONSTRAINTS: IDPS must be producing OMPS EDRs. • RECOMMENDATIONs and/or COMMENTS: Examine V7 product, triplet consistency, residuals, and TOZ cal/val list; coordinate with stray light, SNR, and V8 TOZ and V8 Pro tests. • SUCCESS CRITERIA:Begin assessment of spatial and spectral consistency of EDR products; check product reasonability • RESPONSIBLE PARTY: L. Flynn () • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  23. Test OMPS_E11 V8 and EDR • TEST DURATION AND DATA REQUIREMENTS: First days of Earth View SDRs and EDRs • OBJECTIVES: Identify differences between EDR and V8 • DESCRIPTION: Apply statistical methods to compare OMPS EDR and V8 TOZ products. • PREREQUISITES and/or CONSTRAINTS: IDPS must be producing EDRs ; STAR must be creating V8 TOZ. • RECOMMENDATIONs and/or COMMENTS: Compare products for spatial, temporal, reflectivity, and cross track consistency. • SUCCESS CRITERIA:Catalogue, document, display, and attribute differences. • RESPONSIBLE PARTY: L. Flynn (D. Swales) • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  24. Test OMPS_E12 V8 and DIP • TEST DURATION AND DATA REQUIREMENTS: First days of Earth View SDRs and DIPs • OBJECTIVES: Identify differences between DIP and V8 Pro • DESCRIPTION: Apply statistical analysis to compare OMPS DIP (V6) and V8 products. • PREREQUISITES and/or CONSTRAINTS: IDPS must be producing V6 DIPs ; STAR must be creating V8 Pro. • RECOMMENDATIONs and/or COMMENTS: Compare products for spatial, temporal, reflectivity, and cross track consistency. • SUCCESS CRITERIA:Catalogue, document, display, and attribute differences. • RESPONSIBLE PARTY: L. Flynn (E. Beach) • COMMAND RQMTS: Standard Earth SDRs and DIPs • LAST UPDATE:July 28, 2010

  25. Test OMPS_E13 Pacific Box • TEST DURATION AND DATA REQUIREMENTS: First week of Earth View SDRs, EDRs, DIPs, V8 TOZ and V8 Pro • OBJECTIVES: Assess product performance in benign conditions • DESCRIPTION: Create averages and other statistics for Pacific box weekly averages. • PREREQUISITES and/or CONSTRAINTS: IDPS must be producing EDRs/DIPs; STAR must be creating V8 TOZ and V8 Pro. • RECOMMENDATIONs and/or COMMENTS: Compare products for calibration and cross-track consistency. Assess performance relative to climatology and geophysical expectations. Derive ad hoc calibration adjustments to N-values. • SUCCESS CRITERIA:Catalogue and attribute differences. • RESPONSIBLE PARTY: L. Flynn (W. Yu) • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  26. Test OMPS_E14 Satellite Comparisons • TEST DURATION AND DATA REQUIREMENTS: First weeks of Earth View SDRs, EDRs, DIPs, V8 TOZ and V8 Pro • OBJECTIVES: Evaluate products relative to existing ones • DESCRIPTION: Create and analyze zonal means and other statistics for OMPS relative to different satellite instrument products. Compare CrIS Ozone DIP to OMPS. • PREREQUISITES and/or CONSTRAINTS: IDPS must be producing EDRs/DIPs; STAR must be creating V8 TOZ and V8 Pro. • RECOMMENDATIONs and/or COMMENTS: Assess performance relative to contemporaneous ozone data sets from SBUV/2, OMI, GOME-2, MLS, and CrIS. Begin with comparisons of products from the same or similar algorithms applied to different sensors. • SUCCESS CRITERIA:Catalogue and attribute differences. • RESPONSIBLE PARTY: L. Flynn (Y. Pachepsky) • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  27. Test OMPS_E15 Populate ICVS • TEST DURATION AND DATA REQUIREMENTS: First weeks of Earth View SDRs, EDRs, DIPs, V8 TOZ and V8 Pro • OBJECTIVES: Begin monitoring of key parameters and variables. • DESCRIPTION: Display and evaluate zonal means and other statistics for key products. • PREREQUISITES and/or CONSTRAINTS IDPS must be producing EDRs and DIPs; STAR must be creating V8 TOZ and V8 Pro. • RECOMMENDATIONs and/or COMMENTS: Assess performance relative to expected values. Compare to SBUV/2 and GOME-2. • SUCCESS CRITERIA:Catalogue and attribute differences. • RESPONSIBLE PARTY: L. Flynn (W. Yu) • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  28. Test OMPS_E16 Match-Up • TEST DURATION AND DATA REQUIREMENTS: First weeks of Earth View SDRs, EDRs, DIPs, V8 TOZ and V8 Pro • OBJECTIVES: Create match-up data sets, begin statistical analysis for validation. • DESCRIPTION: A collection of OMPS products for ground station locations will be compiled and initial comparisons will be made. Early focus will be on the twelve NOAA ESRL stations. • PREREQUISITES and/or CONSTRAINTS: Level 2 products must be available. • RECOMMENDATIONs and/or COMMENTS: Begin statistical analysis for validation with ground station ozone estimates. • SUCCESS CRITERIA:Evaluate and validate products; provide matchup data sets. • RESPONSIBLE PARTY: L. Flynn (E. Beach, I. Petropavloskikh) • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  29. Test OMPS_E17 SNO • TEST DURATION AND DATA REQUIREMENTS: First weeks of Earth View SDRs, EDRs, DIPs, V8 TOZ and V8 Pro • OBJECTIVES: Create SNO match-up data sets with NPP and target satellites, begin analysis for inter-calibration. • DESCRIPTION: SNO events for NPP and target satellites will be collected as will corresponding measurements and products. Early focus will be on comparing Level 1 and Level 2 EOS Aura OMI and MetOP-A GOME-2 with OMPS SDRs and EDRs. • PREREQUISITES and/or CONSTRAINTS: Orbital ephemerides. • RECOMMENDATIONs and/or COMMENTS: Begin statistical analysis for comparisons and intercalibration. • SUCCESS CRITERIA:Evaluate relative biases among instruments. • RESPONSIBLE PARTY: L. Flynn (W. Yu) • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  30. Test OMPS_E18 Assimilation • TEST DURATION AND DATA REQUIREMENTS: First weeks of Earth View SDRs, EDRs, DIPs, V8 TOZ and V8 Pro • OBJECTIVES: Test assimilation of ozone products in NWM and UV Index forecasts. • DESCRIPTION: Provide initial samples of OMPS EDRs and DIPs for assimilation and/or comparison to forecasts. • PREREQUISITES and/or CONSTRAINTS: BUFR conversion of ozone data products may be needed. • RECOMMENDATIONs and/or COMMENTS: Begin statistical analysis for comparisons and identification of biases. • SUCCESS CRITERIA:Determine regions and magnitudes of relative biases between products and models. • RESPONSIBLE PARTY: C. Long () • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  31. Test OMPS_E19 ICVS Trending • TEST DURATION AND DATA REQUIREMENTS: Extended period of regular Level 2 data production • OBJECTIVES: Monitor key parameters. • DESCRIPTION: Pacific Box Trending, Ice Radiance Trending, D-pair trending, residual trending, reflectivity distribution trending. • PREREQUISITES and/or CONSTRAINTS: Regular production of Level 2 OMPS products. Success of OMPS_E15. • RECOMMENDATIONs and/or COMMENTS: • SUCCESS CRITERIA: Description of trending results for key parameters • RESPONSIBLE PARTY: L. Flynn (W. Yu) • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  32. Test OMPS_E20 Solar Trending • TEST DURATION AND DATA REQUIREMENTS: Multiple set of Working and Reference Diffuser measurements • OBJECTIVES: Track diffuser and instrument degradation. • DESCRIPTION: Analyze time dependent changes in-orbit. Check Mg II Index behavior. • PREREQUISITES and/or CONSTRAINTS: Multiple but limited reference diffuser measurements. Success of earlier solar tests. • RECOMMENDATIONs and/or COMMENTS: Work with SDR Cal/Val and OMPS Sensor Scientist. • SUCCESS CRITERIA:Quantify spectral dependence of instrument and diffuser degradation. Determine relative variation of OMPS Mg II Index versus SBUV/2 Mg II Indices. Track wavelength scale drift. • RESPONSIBLE PARTY: L. Flynn (J. Niu) • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  33. Test OMPS_E21 Cal/Val Trending • TEST DURATION AND DATA REQUIREMENTS: Extended period of regular Level 2 data production • OBJECTIVES: Continue product validation. • DESCRIPTION: Continue validation against ground-based data with additional data. • PREREQUISITES and/or CONSTRAINTS: Additional reports of ozone products from ground-based stations; regular production of OMPS Level 2 products. • RECOMMENDATIONs and/or COMMENTS: Compare changes over time with those relative to other satellite instrument products • SUCCESS CRITERIA: Create a report on the OMPS ozone product accuracy, precision, and stability. Provide longer-term Match-Up data sets for collection of ground stations. • RESPONSIBLE PARTY: L. Flynn (E. Beach) • COMMAND RQMTS: Standard Earth SDRs and EDRs • LAST UPDATE:July 28, 2010

  34. Primary Reports • Cal/Val Plans – Detailed plans cleared by the IPO for release. • Complete product evaluation reports – These reports will be generated for the OMPS total column ozone product and OMPS ozone profile product approximately seven months into the ICV phase. They will summarize the results of the internal and external investigations, and quantify the product performance relative to the requirements with stratification as described. Reports will identify issues arising in meeting requirements created by measurement complications (e.g., wavelength-scale variations or stray light signal contamination). The components of the studies used in these reports will be archived, i.e., the tools, programs and data, and documentation on the procedures. Supplemental reports will be provided as results merit. • Open access Web pages – Relevant information will be provided by creating Web pages for general access. They will be created and populated with graphs and statistical analysis pertinent to the OMPS data products. They will be designed for automated updates as products move into regular generation. The reference copy of the pages will live at the STAR domain under ICVS, but mirrors can be placed at other locations as desired. • Overpass match-up data sets – Data sets containing the OMPS products and the overpass match-up data sets will be available via anonymous ftp and on the JPSS system. These will be kept current with automated weekly updates from the latest OMPS processing. • User-feedback reports – Near the end of the ICV phase, we will report on the feedback obtained from assimilation users on the performance of the products, including biases in measurements versus forecast fields without the OMPS data sources, and identification of any difficulties in the application implementations.

  35. Door Closed Tasks • OMPS SDR • Noise statistics • SAA and outlier detection • EOF Tools • Nearest Neighbor (spectral, spatial, temporal) • non-linearity • dead/hot pixels • RTS • Review linearity results • Track intra-orbit temperature cycle

  36. Solar Measurement Tasks • OMPS SDR • Synthetic (NGAS+NASA), Proxy (from SBUV/2 continuous Scan and GOME-2), Real (Post Launch) • Comparisons to Reference Spectra • SSBUV, SBUV/2, OMI, GOME-2 • Solstice, SUSIM, Kitt Peak • Mg II Indices (GOME-2, SBUV/2) • Earth-view for GOME-2 and OMI? • Wavelength Scale, Bandpass, Cross-track consistency, Diffuser position, Sun angles, Stray Light, Degradation of weekly, • EOF and Fraunhoffer analysis to detect Shifts in Earth View

  37. Single Orbit Measurement Tasks • OMPS SDR • EOF • Wavelength Scale • Signal to Noise • SAA and Outliers • Stray Light, Mg II Index, correlation • Product consistency • Cross track, along track, spectral • Triplet (Ozone, reflectivity, Aerosol) • SBUV/2, OMI, GOME-2 • Comparison of products and residuals • SBUV/2 • OMI • MLS • GOME-2 • SZA and latitude dependence • Test alternative algorithms

  38. Single Day Measurement Tasks • Repeat orbital analysis with full day • Especially stray light and SAA. • Compare maps and map differences • Perform comparisons and consistency analysis with Zonal Means • Product consistency for Zonal Means • Cross track, along track, spectral • Triplet (Ozone, reflectivity, Aerosol) • SBUV/2, OMI, GOME-2 • Comparison of products and residuals • SBUV/2 • OMI • MLS • GOME-2 • SZA and latitude dependence • Start ICVS monitoring plots

  39. Single Week Measurement Tasks • Make Pacific Box Comparisons and Checks • Especially cross-track • Begin trending of daily statistics • Repeat daily analysis with week of data • Compare maps and map differences • Start overpass and Matchup data sets • Perform comparisons and consistency analysis with Zonal Means • Product consistency for Zonal Means • Cross track, along track, spectral • Triplet (Ozone, reflectivity, Aerosol) • SBUV/2, OMI, GOME-2 • Comparison of products and residuals • SBUV/2 • OMI • MLS • GOME-2 • SZA and latitude dependence • Continue ICVS monitoring

  40. Single Month of Measurement Tasks • Create Match-up overpass data sets • Begin ground-based comparisons • Continue trending of daily statistics • Repeat weekly analysis with a month of data • Add Ascending/Descending and D-pair • Compare maps and map differences • Perform comparisons and consistency analysis with Zonal Means • Product consistency for Zonal Means • Cross track, along track, spectral • Triplet (Ozone, reflectivity, Aerosol) • SBUV/2, OMI, GOME-2 • Comparison of products and residuals • SBUV/2 • OMI • MLS • GOME-2 • SZA and latitude dependence • Continue ICVS monitoring

  41. Details on ICVS and Matchup • Monitoring in ICVS www.star.nesdis.noaa.gov/smcd/spb/icvs/ • Current SBUV/2 • Initial & final residuals (mean and SD), • Total Ozone pairs and profile differences • Monthly profile Retrieved – A Priori • Weekly 1% and 99% reflectivity • Current and in transition GOME-2 • Mg II Index • Selected Residuals (Time series and Cross Track) • Pacific Box monitoring of residuals and reflectivity • Total ozone and Aerosol Index (Time series and Cross Track) • List of Overpass stations • http://www.woudc.org/data/Metadata/platform_e.html

  42. How much data do you need? What can it tell you? How can you accentuate different effects? • Internal Measurements • Dark Current and non-Linearity estimates, and Charged Particle effects • Single set of Solar measurements • Goniometry, Irradiance Calibration, Wavelength Scale, SNR, Flat Fielding, Bandpass check (Comparisons to reference, contemporaneous, and high-resolution spectra) • Single Orbit of Earth-view data • Wavelength Scale variations, SNR, Rough Radiance/Irradiance Calibration, Triplet/Pair consistency (Absorbing, reflectivity, and aerosol channels), Cross-track consistency • Single Day • Total Ozone versus other mappers, Zonal Means, Stray Light (Profile Wavelengths), better orbital analysis, and start of performance monitoring • Single Week • Cross-track consistency, Absolute calibration of reflectivity channels, calibration biases compared to other space-based mappers and profilers – transfer, and better daily analysis. • Single Month • Ground based total ozone validation data points (assisted by transfer), Starting points for trending of instrument degradation and solar diffuser changes, and better weekly analysis – trending of consistency results. • Single Year • Ground-based ozone profile validation, evaluation of long-term characterization, better monthly analysis, and start of ice radiance trending.

  43. Backup Slides

  44. Issues • With slips in Launch, NPP Science Team will need to be refreshed • Data availability and format (Timing of deliveries/builds) • SDR, EDR, Key Calibration data • Data and documents outside of ITAR? • Instrument Performance • SDR Validation • Stray Light corrections • Diffuser features • Wavelength scale and bandpass • Temperature Effects on Slits and optical bench • Cloud Top Pressure (CTP) Error Contribution • IMT Conflicts and flexibility • Version 8 Ozone Profile Algorithm • Algorithm tuning for sensor characteristics

  45. OMPS Product Risk/Identification/Mitigation • Solar Diffuser Characterization • (R) Fine Structure may limit degradation characterization • (I) Evaluate Solar Irradiance as incidence angles vary • Intra-orbit spectral scale and bandpass • (R) Unaccounted shifts will degrade ozone products • (I) Use EOF analysis and spectral fits to track variations • (M) Include intra-orbital shift option in look up tables • Cloud Top Pressure • (R) IR estimates are inaccurate for UV measurements • (M) Implement UV-based Climatology or RRS algorithm • Stray Light • (R) Stray light errors will impact product accuracy • (I) Evaluate errors through reflectivity correlation studies • (M) Consider Point-Spread-Function-based source/target corrections • South Atlantic Anomaly • (R) Charged particles’ effects will corrupt ozone profile retrievals • (I) Identify and remove or flag outliers • (M) Use additional wavelengths and less aggregation for retrievals 45

  46. Ozone Data Products Tasks • Intensive Cal/Val • Coordination of results • L. Flynn will manage review and distribution of validation tasks from the task network to team members to ensure coverage and coordinate flow of information to and from the SDR calibration/validation team and other team/community members. • Internal Product Validation • NESDIS (ACPOP) will analyze diagnostic parameters similar to the current operational product tasks using statistical trending. • Satellite comparisons • NESDIS will lead the comparison to other satellite products with extensive coordination with the NPP Science Team activities. • Sub-orbital comparisons • I. Petropavlovskikh of ESRL will lead the comparisons to ground-based data, with ESRL providing their network of 15 Dobson stations and 8 ozonesonde stations. • Evaluation of product quality for applications • NCEP will lead the evaluation of the product quality for applications including the following: assimilation into numerical weather models, generation of UV Index forecasts, and monitoring the stat of the atmosphere’s ozone layer. • Long-term Monitoring • Continuation of activities developed in Intensive Cal/Val

  47. Develop Match-up and statistical analysis tools, readers, and monitoring • Progress to Date • Resources • Way Forward • Concerns • Tasks • Eric (Overpass), Wei (ICVS), Dustin (EOF), Richard (Readers)

  48. Collect and exercise calibration parameters and instrument models • Progress to date • Resources • Way Forward • Concerns • Tasks • Jianguo and Dustin (Bandpass, Pixel and Macropixel, Wavelength Scale, LUTs, Solar proxies)

  49. Implement and exercise forward models for radiative transfer • Progress to date • Resources • Way Forward • Concerns • Tasks • Dustin (TOMRAD), PEATE (Master Tables)

  50. Create and manipulate sample, synthetic, and proxy SDR, EDR, and DIP data sets • Progress to date • Resources • Way Forward • Concerns • Tasks • Yakov, Dustin, Eric, Richard, PEATE, NGAS (GOME-2, SBUV/2, OMI, OMPS)

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