Expedition Navigation Software 
1 of 1- jreisberg
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Offline - Registered: 3/05/2019
- Posts: 35
current 180 degrees wrong direction
Hey folks. Just sailed from Newport, RI to Bermuda as part of the Bermuda 1-2. Plotting my return. I wanted to create a current GRIB from my log files to make sure I avoid the meander. I found the meander (4.2 knots of favorable current) coming down. But when I create GRIB file from log files to plot current, the current in meander shows a NW flow instead of the correct SE flow. Anybody know why?
Trying to link my log files and GRIB but dropbox not syncing right now.
- jreisberg
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Re: current 180 degrees wrong direction
Log files and GRIB I created are located here:
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Thread Starter- Ernie M
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- Registered: 11/05/2015
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Re: current 180 degrees wrong direction
Josh,
Dr Bohlen addressed some of it here"
Ernie
- jreisberg
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Re: current 180 degrees wrong direction
Thanks, Ernie. This is more of a technical Expedition question about creating gribs from log data. When I load my track based on log files and change settings to show wind and current along my track, the vectors are correctly facing E-SE in the meander. But when I create a grib from the log data, the current vectors are 180 degrees off (pointing 330 deg M).
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Thread Starter- Nick
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Re: current 180 degrees wrong direction
Maybe send me the log file. I had forgotten that was there.
- jreisberg
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Re: current 180 degrees wrong direction
The log files and grib are at the Dropbox link in the post. Can you access them?
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Thread Starter- Nick
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Re: current 180 degrees wrong direction
Yes. At a glance the code looks ok, but will try to find time to look at them next week.