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Importance of wind direction

Posted by skeptic1 on 31 Aug 2010 at 01:05 GMT

"The passage is 5 km wide, and it remains open for 4 hours under 28 m/s wind forcing. The crossing remains open for 7.4 hours under 33 m/s winds, but these stronger winds may render walking too difficult for a mixed group of people."

Does this imply a constant wind direction?

No competing interests declared.

RE: Importance of wind direction

drews replied to skeptic1 on 01 Sep 2010 at 11:16 GMT

The modeled wind direction is held constant for the 12 hours for which it blows. The standard wind direction is from due east, except for the cases noted in Table 3 where different directions are tested. We did not attempt to match our modeled wind field with a synoptic weather system.

Note that Tulloch (1896) observed the effects of a real weather system on Lake Manzala (formerly Lake Tanis). His report of wind setdown is similar to our model results. Although our modeled wind does not represent the small variations one would expect of an actual wind event, Tulloch (1896) indicates that our results are applicable to real weather systems.

No competing interests declared.

RE: RE: Importance of wind direction

jamesgoetz replied to drews on 28 Sep 2010 at 09:33 GMT

I suppose that I would like to see results of a simulation that include typical wind shifts.

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