1 / 18

Analysis of Doppler Radar Datasets

Analysis of Doppler Radar Datasets. L. Jay Miller (September 2009) Gridding and Wind Synthesis. EOL/RSF Project. “Unfreeze” legacy software REORDER – NCAR/ATD/FOF (Dick Oye) SPRINT – NCAR/MMM (Carl Mohr and L. Jay Miller) CEDRIC – NCAR/MMM (Carl Mohr and L. Jay Miller)

aglaia
Download Presentation

Analysis of Doppler Radar Datasets

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Analysis of Doppler Radar Datasets L. Jay Miller (September 2009) Gridding and Wind Synthesis

  2. EOL/RSF Project • “Unfreeze” legacy software • REORDER – NCAR/ATD/FOF (Dick Oye) • SPRINT – NCAR/MMM (Carl Mohr and L. Jay Miller) • CEDRIC – NCAR/MMM (Carl Mohr and L. Jay Miller) • PPI_MMM – NCAR/MMM (Carl Mohr and L. Jay Miller) • Other contributors: Michele Case (ATD/FOF) Bill Anderson (MMM) Sherrie Fredrick (MMM) • History of software • SPRINT – Late 1970s (NHRE) • REORDER – Mid 1980s (ELDORA) • CEDRIC – Late 1970s – Early 1980s (NHRE and CCOPE)

  3. EOL/RSF Project cont’d • Evaluate gridding software • Recommendations for future • Establish single repository • Include legacy software • Document efforts with Wiki website • Knowledge transfer and document usage

  4. Comparison of Reorder and Sprint REORDERSPRINT SCHEME: DISTANCE-WEIGHTING BI-LINEAR INTERPOLATION CLOSEST POINT CLOSEST POINT REGION OF INFLUENCE: USER-SPECIFIED RADII LOCALLY ADAPTIVE XYZ ORIENTED RAE ORIENTED CONSEQUENCES: CONSTANT LINEAR SCALE UNEQUAL LINEAR SCALE UNEQUAL ERROR CONSTANT ERROR GROUND-BASED (AIRBORNE) OUTPUT GRID ORIENTATION: USER SPECIFIES + X AZIMUTH USER SPECIFIES + X AZIMUTH (USER-SPECIFIES + X AZIMUTH) (+ X – OUT RIGHT SIDE) (+ Y – FLIGHT DIRECTION) (ROTATE TO SPECIFIED + X AZIMUTH)

  5. Common Characteristics • Read DORADE and Universal formats • DB Fields  Linear  Interpolate  DB Scale • Radial velocity interpolation includes local unfolding • Output CEDRIC pure binary files

  6. Sprint-Reorder Interpolation Regions

  7. Airborne Grid Orientations

  8. Analysis Flow Chart for COPS

  9. reorder_dows

  10. Parts of run_cedsyn • Part 1 (BEGIN): Basic framework for processing single radar dataset • Part 2 (FIL_GRAF): Define block used reading/massaging/graphing single radar • Part 3 (SYNUVW): Define block used for synthesis, creating additional fields, graphing, and writing these final results • Part 4 (PATCHER): Commands for additional filling of fields • Part 5 (FILTER): Commands for filtering and creating new fields • Part 6 (COMPARE): Commands for comparing input and output fields • Part 7 (FINISH): Commands for finishing and writing synthesis output

  11. Part 1: run_cedsyn (BEGIN)

  12. Part 2: run_cedsyn (FIL_GRAF)

  13. Part 3: run_cedsyn (SYNUVW)

  14. Part 4: run_cedsyn (PATCHER)

  15. Part 5: run_cedsyn (FILTER)

  16. Part 6: run_cedsyn (COMPARE)

  17. Part 7: run_cedsyn (FINISH)

  18. Some Relevant Websites • EOL/RSF PROJECT WIKI: https://wiki.ucar.edu/display/raygridding/Home • CEDRIC DOCUMENTATION: http://www.mmm.ucar.edu/pdas/Documentation • PURE BINARY FILE DESCRIPTION: http://www.mmm.ucar.edu/pdas/Documentation/appendix-D.ps • WIND SYNTHESIS MATH: http://www.mmm.ucar.edu/pdas/Documentation/appendix-F.ps • AIRBORNE DOPPLER RADAR DATA ANALYSIS WORKSHOP (2000)http://www.mmm.ucar.edu/pdas/ATD-workshop/atd-lecture.html

More Related