1 / 26

Mesocyclone : Small-scale (~ 5 km) rotation over a Sufficient depth (> 2.0 km) and

A 9-Year Summary of Radar Characteristics of Mesocyclonic Storms and of Deep Convection in Southern Quebec (1993-2001). Mesocyclone : Small-scale (~ 5 km) rotation over a Sufficient depth (> 2.0 km) and Lasting at least 10 minutes

winfred-smith
Download Presentation

Mesocyclone : Small-scale (~ 5 km) rotation over a Sufficient depth (> 2.0 km) and

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. A 9-Year Summary of Radar Characteristicsof Mesocyclonic Storms and ofDeep Convection in Southern Quebec (1993-2001) Mesocyclone: Small-scale (~ 5 km) rotation over a Sufficient depth (> 2.0 km) and Lasting at least 10 minutes UVIL : Vertical integration of Z4/7 from a height of 5 km

  2. Example of severe weatherMESOCYCLONES: small-scale rotating flows Mesocyclone radar signature Radar Mesocyclone flow

  3. 2.5 km CAPPI 7.0 km CAPPI UVIL: From 5.0 km VIL: from 2.5 km

  4. 2.5 km Doppler CAPPI 2.5 km Refl. CAPPI

  5. Doppler CAPPI Height Animation

  6. Lagrangian Time Animation

  7. 2.5 km Reflectivity CAPPI 3.0 km Doppler CAPPI 20:30 GMT 28-Aug-1994

  8. Tracking mesocyclones and extrapolating their position

  9. Lagrangian Doppler CAPPI

  10. VIL Animation

  11. Climatology of Mesocyclones Yearly distribution of the tracked mesocyclones and of the 'mesocyclone hours'

  12. Climatology of Mesocyclones Distribution of the lifetime of the tracked mesocyclones and of their path length

  13. Distribution of the diameter and of the vertical depth of the 'm5' detections that are part of the tracked mesocyclones

  14. Distribution of the peak rotational velocity and of the average maximum shear (as defined in section 3.4a) of the 'm5' mesocyclones

  15. Hourly and monthly distribution of mesocyclones in the Montreal area.

  16. Climatology of Mesocyclones Geographical distribution of mesocyclonic vortices around the McGill Doppler radar for 1993 to 2000 inclusively. Range rings are 20 km apart. Divide the "Mesos" scale by 10 in order to obtain the number of mesocyclones affecting each pixel of the map.

  17. Planetary scale precursors Day before Thunderstorm days with mesocyclones (22 days) Thunderstorms days without mesocyclones (27 days) Same day Composite 500 hPa maps. Thin solid lines are heights [decameters]. Thick solid (dashed) positive (negative) anomalies from 30 years climatology. Shaded is statistical significance to 95% and 99% level.

  18. Topography Around Montreal

  19. Geographical distribution of convective precipitation for each of the 9 years analyzed in terms of the number of minutes that a value of 10 kg/m2 has been exceeded on the UVIL map

  20. Geographical distribution of deep convection for the years 1993 to 2001 inclusively in term of the number of minutes that the UVIL exceeded 15 km/m2 . Range rings are 40 km apart.

  21. Diurnal and Yearly distribution of intense convection

  22. The color version of the yearly UVILs are not range-corrected

  23. Geographical distribution of deep convection for the years 1993 to 2001 inclusively in term of the number of minutes that the UVIL exceeded 15 km/m2 . Range rings are 40 km apart.

More Related