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glos / user_queries

Repository to track glos user queries or issues which may or may not require tracking in myglos.
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bathmetry and thermistor data #25

Open beckypearson opened 7 years ago

beckypearson commented 7 years ago

DO you have a listing of the Lake Michigan buoys and the depth in which they are deployed? When looking at the temp profiles, it would be nice to know about how much water depth is below the bottom thermistor for more insight for salmon trolling at that depth. I couldn’t find it on the web pages (nice addition for fishermen!) so hoping you have a deployment depth chart to share.

Thank you in advance! Regards, Craig Larson Niles, MI

beckypearson commented 7 years ago

depth on thermal string node is a variable sending back to GLOS. Temp on thermal string is a 2D variable [temp_value, depth_value]. Depth may vary if the flow under the water is huge.

GLOS obs db should have the data and can be retrieved from glos_obs web service. If there is any new development on serving buoy data, please disregard my comment.

Thanks,

Guan

beckypearson commented 7 years ago

Can anyone on the DMAC team verify [temp_value, depth_value] and bullet out steps on how to retrieve these data from the glos_obs web service? We could save this question/answer and add it to a Frequently Asked Question document for our website or the data portal.

kkoch commented 7 years ago

From Greg > I got the impression that the inquiry was they wanted to know what the actual water depth is at the buoy which is constantly changing. If so I am not sure of a resource that GLOS has to provide this.

From Kathy > I can also say that even for the thermistor data we get the depths change often weekly (or as often as I check). For example, 45163 this week has water temp at 4ft & 44ft. Last week it was 4ft and 43ft. Others change more drastically where one week they just have at surface (0ft) and then the next week we have a list of 5 depths. So the best I can say is that if it shows on the portal, then that is what we are receiving from the PI for that buoy for that week or day. Also looking at the user's query - I just can't imagine how we would know what the depth is from the bottom thermistor to that point in the lake. But there might be some modeling that would assist so maybe our modeling experts would know.

kkoch commented 7 years ago

Kristin writes; I'm just putting myself in the consumer's place, but it seems to me that they are looking for something approximate for fishing. Does it vary more than would be somewhat helpful?

LTIkk > Not saying it couldn't be done. Don't know specifically how, but betting there would be some way to take NOAA bathymetry shapefiles and somehow do some magic that would tell what the approximate lat/lon of a buoy was and what the lowest thermistor read was. I can't image it would be very accurate (and thus might make fisherfolks grumpy if we are not accurate) given the changes to the buoy data and locations, waves, etc.

However, for this customer request - as far as I know that does not exist today and thus the question back to GLOS-land is whether this is something you want to pay someone to create, do you think that it would be something to add to Boaters? If so, then it can be added to the SOW and project list and a LOE can be developed.

But maybe @tslawecki can chime in when he's back in country.

kkoch commented 7 years ago

I'll stick this in here for @gcutrell since I know he's swamped. Greg thinks it would not be too difficult to plug in a static depth marker in obs for each of our buoys based on shapefile GIS data. I was overthinking it a bit and thinking it needed to be dynamic and more of a precise measure. He isn't sure how easy it will be to change the obs database, but I will make a ticket for this for the portal and or the boaters view and we can investigate further as a future enhancement. AND @beckypearson if it does turn out that we already have this data somewhere, yes we can document that.