MAYELOWEATHER 2018-03-10 22:19:11

ok

ryancurrier 2017-11-09 15:02:35

terrible. Dense technical information presented in a superficial manner. Recall ability is hampered by lack of context or association.

jancae 2017-11-04 14:11:19

Good course

jinghao 2017-10-13 11:19:00

MORE DETAILS PLAESE.

pic2 2017-08-04 15:37:45

These are excellent trainings, as well as on the job training for me.

wtvisser 2017-07-15 12:09:27

Helps to understand the foehn winds and the dangers of mountain activities

kjmayer 2017-03-28 18:55:24

nice

Abdelrahim@12345 2017-01-19 11:51:05

Thanks a lot for more interesting subject I am so glad to watch this lesson it is really useful for the forecasters in Aviation>

mjtmeted 2017-01-15 13:37:38

I am a former gliding instructor and cross country pilot. Although this lesson is primarily intended for forecasters I found it improved and expanded my relatively basic knowledge of wave systems a great deal. If I were instructing now I would make this lesson mandatory for my students. It is also fun to work through, which is so important for those of a shorter attention span ;) Thank you so much for making this available to all. Mark

Miran 2015-05-11 11:12:15

Great course, with a lot of details that helped me greatly in understanding mountain waves. Looking forward to implement my knowledge in forecasting.

moliere 2014-02-10 06:32:34

Great course- work for National Met Service in UK where we are taught the basics of Mountain Waves without the detail- This is a far more detailed course and gives an excellent overview of a very complicated subject without getting bogged down in excessive Mathematical arguments.

cupoteacoast 2013-08-01 03:29:36

Excellent paper and I highly recommend it to anyone wanting an understanding on this subject. Where I live in New Zealand is subject to waves, rotors and the jump zone to near ground level during stable anticyclonic air combined with very cold Bora down slope winds. This has helped me understand it immensely. A1+++++. Thank you MetEd.

deliajxm 2013-03-27 16:27:47

It's very interesting to go through the module. And there are plenty of examples and pictures to illustrate the theory. It goes rather deep into meteorology, thus very useful for students in relevant majors.

Liye 2012-09-12 18:49:12

It is very good with examples and questions in the module, also some ideas about how to do the real forecast about downslope winds.

After completing this module, the learner should be able to do the following things.
With regard to the hazards, features, and climatology of mountain waves and downslope winds:

• Identify at least 2 hazards associated with mountain wave activity
• Recall at least 3 atmospheric and topographic requirements for a mountain wave system
• Describe the major features of a mountain wave system
• Recall when and where mountain waves and downslope winds occur
• Recall the location of the following winds: Chinook, Santa Ana, Bora, and Foehn

With regard to downslope winds:

• Recall characteristics of downslope winds
• Describe why downslope winds are warm

With regard to the origin of mountain waves and downslope winds:

• Describe why air displaced over a mountain range starts to oscillate
• Recall the conditions that lead to topographically-blocked flow in terms of mountain height, wind speed, stability, and Froude number
• Describe the effects of wind shear and inversions on mountain wave activity
• Define critical level
• Discriminate between a self-induced critical level and a mean-state critical level
• Describe the different types of rotors and their associated atmospheric conditions
• Identify which type of rotor is associated with more turbulence

With regard to forecasting mountain waves and downslope winds:

• Recall the 1.6 rule-of-thumb
• Recall what NWP model resolution is required to accurately depict mountain waves
• Describe how a model's vertical coordinate system affects its ability to forecast mountain waves
• Describe how radiosondes and pilot reports (PIREPs) can help with short-range forecasting of mountain waves
• Describe how satellite imagery can be used to detect mountain wave activity with or without either daylight or clouds

mountain wave, downslope winds, waves, turbulence, wind storm, gravity wave, standing wave, cap cloud, lee wave, rotor cloud, rotor, lenticular cloud, vertically-propagating wave, jump region, trapped lee wave, downslope wind, wind storm, foehn, bora, stability, topography, buoyancy, oscillation, orographic wave, froude number, critical level, mountaintop inversion, wind shear, topography, NWP, numerical weather prediction, model, resolution, rawinsonde, radiosonde, satellite, clear slot, AVHRR, fog product, IR, MODIS, water vapor, pilot reports, PIREPS, GOES, jet streak, MSLP

July 2016: HTML framework updated to latest cross-browser compatibility standards.

July 2014: The concepts presented in this module are relevant even though they are demonstrated with older NWP models.