Lab 5 More Stability Analysis and Soundings Presented by: Pete Stamus Tues, Wed, 15-16 June 1999 Hydromet 99-2.

Presentación del tema: "Lab 5 More Stability Analysis and Soundings Presented by: Pete Stamus Tues, Wed, 15-16 June 1999 Hydromet 99-2."— Transcripción de la presentación:

1 Lab 5 More Stability Analysis and Soundings Presented by: Pete Stamus Tues, Wed, 15-16 June 1999 Hydromet 99-2

2 Lab 5: More Stability Analysis and Soundings Provided: 1. 1200 UTC 13 March 1993 soundings for Hatteras NC, Dulles VA, Athens GA, Albany NY 2. 0000 UTC 14 March 1993 soundings for Dulles VA, Atlantic City NJ, Albany NY 3. 0000 UTC 14 March 1993 850 mb plots 4. 0000 UTC 14 March 1993 MSL pressure and surface plots 5. 0000 UTC 14 March 1993 500 mb heights and vorticity Action: 1. Where is the above freezing layer at Athens GA? What physical process might have caused this? 2. What is the origin of the air feeding the heavy snow in Pennsylvania and New York? 3. What is the temperature change at Albany NY between the surface and 300 mb at 1200 UTC 13 March 1993? 4. Same as question 3, but for 0000 UTC 14 March 1993. 5. What is the temperature change at Albany NY between 700 and 300 mb at 1200 UTC 13 March 1993? 6. Same as question 5, but for 0000 UTC 14 March 1993.

3 Lab 5: More Stability Analysis and Soundings (cont.) Discussion: a. Can you explain why the heaviest snow is often near the rain/snow line? b. Why was there thundersnow at Albany NY?

4 13 Mar 1993 1200 UTC Hatteras NC

5 13 Mar 1993 1200 UTC Hatteras NC

6 13 Mar 1993 1200 UTC Athens GA

7 13 Mar 1993 1200 UTC Athens GA

8 13 Mar 1993 1200 UTC Dulles VA

9 13 Mar 1993 1200 UTC Dulles VA

10 13 Mar 1993 1200 UTC Albany NY

11 13 Mar 1993 1200 UTC Albany NY

12 14 Mar 1993 0000 UTC Dulles VA

13 14 Mar 1993 0000 UTC Dulles VA

14 14 Mar 1993 0000 UTC Atlantic City NJ

15 14 Mar 1993 0000 UTC Atlantic City NJ

16 14 Mar 1993 0000 UTC Albany NY

17 14 Mar 1993 0000 UTC Albany NY

18 14 Mar 1993 0000 UTC 850 mb plot

19 14 Mar 1993 0000 UTC 850 mb plot

20 14 Mar 1993 0000 UTC

21 14 Mar 1993 0000 UTC

22 14 Mar 1993 0000 UTC MSL pressure (mb)

23 14 Mar 1993 0000 UTC 500 mb Height (m) Vorticity (s -1 )