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Preliminary results with the LaMP X band radar

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.

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Preliminary results with the LaMP X band radar

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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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