Posted: Thu Nov 15, 2012 8:17 pm
In the attachment, I plotted wave heights around Florida, what units are the wave heights in?
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http://www.atmos.albany.edu/weather/dat ... @H_boy.wmoGreg Higgins wrote:Where did you getyour data? URL???
Well,Greg Higgins wrote:Your answer is: meters
You've up-converted it twice. DA will take the original observation (in metres) and convert it to feet. I've just done a quick test on current (09z 19 Nov 2012) data, and wave heights in the Gulf when plotted using "English" units are mostly between 13 and 25 feet. Change to metric units, replot and the heights change back to less than one-third, as they should. When you drew your chart stations in the Gulf were reporting light to moderate N to NE winds with a light pressure gradient, a little steeper near the US southern coast [http://www.australianweathernews.com/ch ... _15-21.gif] and the wave heights look about right for that situation.tmagan wrote:Well,Greg Higgins wrote:Your answer is: meters
I have 'English' in my Station Plot Preference units, which would make some of the waves in the above map over 100 feet.
I think it would have to be a SYNOP code dataset, as above, in which case it would be the same regardless of source. Unfortunately, the wave data in this observation is in one of the national coded sections. I've italicized or coloured four parts of the code.Greg Higgins wrote:AAXX 19201 41009 19121 99285 70802 46/// /3310 10182 20156 40194 91220 22200
00253 333 91213 555 11110 22115 31146 43214 61219 329103 325105
328106 325102 325106 325109=