PWS Drifter Realtime Webpage Info

Prince William Sound, Alaska Drifter Realtime Webpage Wiki

Page can be found at: http://pws.drifterdata.com or http://www.icess.ucsb.edu/drifter/realtime-PWS/
This page is for displaying any Surface Velocity Program (SVP) in blue, Coast Guard SLDB (CG) in green, and Oil Spill Response (OSR) in red drifter tracks. The Iridium drifters will be on the normal realtime page.

File Locations

The data files must be uploaded to the ICESS network in this directory: /home/locl/file_sharing/PWS/. The filenames must be 'PWS_SVP_DATA.txt' (SVP), 'PWS_CG_DATA.txt' (Coast Guard), and 'PWS_OIL_DATA.txt' (OSR). There are README files there to help with formatting. To not show a particular group's data, either empty the contents of the appropriate file or delete (or rename) it.

There is also a 'BOX_COORDINATES.txt' there (and README file) for setting coordinates for a box.

File Formats

One thing to note is that fields which normally have a number must have a number, with the exception of SST which can instead have a "NaN". I really only care about 5 things (drifter_number,date/time,lat,lon,SST), so if any of those other 4 fields are a "NaN" it should be skipped anyway since they contain critical information. As for any "non critical" columns, (e.g. "FoM" or "Batt volts" [if we set that up to be a valid column] or whatever) can contain anything since I'm ignoring those columns anyway.

1) SVP. The info at http://penguin.sfos.uaf.edu/output/pws/Halverson/SVP/ASCII/20090409/ still doesn't show which column will have the drifter number, so for now, I'm assuming it will be the first. e.g. % Pacific Gyre SVP - Drogue center: 10m - ARGOS telemetry % Drifter # Date/Time (UTC) Lat Lon FoM SST [C] 1234 2009/04/09 22:30:00 60.5503 -145.7611 1 5.0

2) Coast Guard SLDMBs The email from Rob Cermak on Jul 9th @ 17:39 has this link http://penguin.sfos.uaf.edu/output/pws/Ohlmann/SLDMBS/GNOME/20090528/SLDMBS_20090528_0823_processed.txt

If this will instead be the format, let me know. Again, VERY easy to adapt my code for this. Right now, this is the format I'm ready for:

Shape|OBJECTID|Buoynum|ZDateTime|DateTime|Location |1|38669|232030Z MAY 09|39956.85|20-57.453N 071-20.205W

3) Oil Spill Resp. For now it's setup to be exactly in the same format as the SVP (but with one header line instead of two). I need to know if this needs to be different.

e.g. % Drifter # Date/Time (UTC) Lat Lon FoM SST [C] 1234 2009/04/09 22:30:00 60.5503 -145.7611 1 5.0