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LaMP X-Band Radar: Preliminary Results & Future Objectives

Explore the preliminary findings from the LaMP X-Band radar in Vosges, including rain rate estimations, reflectivity comparisons, and cell tracking. Learn about upcoming studies involving MRR and radar comparisons with POLDIRAD and DOW. Future work includes humidity field analysis and microphysical simulation comparisons.

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LaMP X-Band Radar: Preliminary Results & Future Objectives

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  1. Preliminary results with the LaMP X band radar J. Van Baelen¹, Y. Pointin¹, F. Tridon¹, and M. Hagen² 1°/ Laboratoire de Météorologie Physique, Observatoire de Physique du Globe de Clermont-Ferrand, 2°/ Institut für Physik der Atmosphäre, DLR – Oberpfaffenhofen.

  2. Ι / LaMP contribution to COPS

  3. LaMP contributions to COPS • Super site Vosges (mountain): • Scanning X band precipitation radar

  4. X band radar characteristics • Site: Bischenberg • 48°28’45” N / 7°28’29” E • Operations: • 15 Jun. – 29 Aug. • Resolutions: • Range 60 m. • Azimuth 2° • Time 30 sec. • Data base: • All POI PNGs are available on ftpobs.univ-bpclermont.fr/exterieur/JVB • Reprocessing under way • Z & Rs available later

  5. LaMP contributions to COPS • Super site Vosges (mountain): • Scanning X band precipitation radar • Super site Vosges (valley): • Micro Rain Radar K band profiler • Raingage and J-W disdrometer

  6. MRR characteristics • Site: Niedernai • 48°26’53” N • 7°31’33” E • Operations: • 14 Jun. – 30 Aug. • Resolutions: • Vertical 100m. • Max range 3000m. • Time 20 sec. • Data base: • All MRR measurements are on Data Base (format similar to all other COPS MRRs) • Raingage data in preparation (example format ?)

  7. LaMP contributions to COPS • Super site Vosges (mountain): • Scanning X band precipitation radar • Super site Vosges (valley): • Micro Rain Radar K band profiler • Rain gage and J-W disdrometer • GPS network / IWV and tomography • Cloud microphysics model

  8. ΙΙ / Observations

  9. Trees Entzheim Mutsig Grendelbruche Mt Sainte Odile Champ du Feu V Real Time Data / Animation of last 2 h on line

  10. The X-Rad Horror show !

  11. Impact on measurements

  12. ΙΙΙ / Preliminary results

  13. New X-band radar visualization

  14. Impact on measurements

  15. Monthly Cumulated Rains

  16. IOP14 V-site rain event

  17. Reflectivity comparisons and Rain Rate Estimates

  18. IOP 15 • Contrasted behavior when comparing 12 and 13 of August • Cell generation: • 12: Crests • 13: Foothills • Evolution: • 12: Stationnary at first then slow drift before disappearing on plains • 13: Reinforcement together with motion to the East

  19. X Rad POLDIRAD: Cell Tracking IOP 15 12 Aug. 2007 11-17 UTC 13 Aug. 2007 8-15 UTC cell tracks first occurrence

  20. August 12 (12:00 – 15:00 UTC)

  21. August 13 (12:30 – 13:30 UTC)

  22. ΙV / What’s next ?

  23. Future work & Objectives • Combined studies with MRR in order to retrieve adapted Z-R relationships and improve rain rate estimations • Comparisons with other radars (POLDIRAD + DOW) and instruments • Link radar observations with humidity field structure and evolution (GPS tomography and airborne measurements) • Detailed study of precipitation events within their meteorological context • Comparison with LaMP microphysical simulations

  24. That’s all for now !Questions ?

  25. Primary IOPs of interest • Criterions • Precipitations seen by X band radar • Measurements with POLDIRAD & DOW • Airborne measurements • Selection • IOP 7 • IOP 14 • IOP 15 • IOP 12 • IOP 10 • Others: IOP 5 – 6, days 21/6 - 16/8, ATR flights

  26. Tomography (coarse) primer ! 12 Aug. 11:00

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