# Aggregating glider data

**URL:** <https://discourse.oceanobservatories.org/t/aggregating-glider-data/321>\
**Category:** Data Tools\
**Created:** [November 1, 2021, 4:38pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321 "2021-11-01T16:38:36Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![rvaillancourt](https://avatars.discourse-cdn.com/v4/letter/r/c77e96/32.png) [@rvaillancourt](https://discourse.oceanobservatories.org/u/rvaillancourt)\
**Post date:** [November 1, 2021, 4:38pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321/1 "2021-11-01T16:38:36Z")

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Is there a way of aggregating data during download for the glider files? I need data from the gliders’ PAR and FLUOR data file selections to be combined and the only way I see to do it is to merge them after downloading, but isn’t there a way to merge them prior to download? Or, better yet, can I select only those data columns I want from each file, merge, and then download?

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**Author:** ![jglatstein](https://avatars.discourse-cdn.com/v4/letter/j/87869e/32.png) [@jglatstein](https://discourse.oceanobservatories.org/u/jglatstein)\
**Post date:** [November 4, 2021, 2:01pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321/2 "2021-11-04T14:01:44Z")

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Hi Robert,  
Can you provide more detail on which interface you are using? A link or screen shot of what you are seeing would be helpful.

Thanks

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**Author:** ![rvaillancourt](https://avatars.discourse-cdn.com/v4/letter/r/c77e96/32.png) [@rvaillancourt](https://discourse.oceanobservatories.org/u/rvaillancourt)\
**Post date:** [November 5, 2021, 5:13pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321/3 "2021-11-05T17:13:09Z")

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Hi,

I am using this interface:

 ![image001.png](https://canada1.discourse-cdn.com/flex036/uploads/ooidata/original/1X/a15f241424837c3ca5a74f65f8012e0917826ac7.png)

![~WRD0001.jpg](https://canada1.discourse-cdn.com/flex036/uploads/ooidata/original/1X/52d5f1c08649212fe6768d2cacdcf8df711810d9.jpeg)

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**Author:** ![seagrinch](https://avatars.discourse-cdn.com/v4/letter/s/db5fbb/32.png) [@seagrinch](https://discourse.oceanobservatories.org/u/seagrinch)\
**Post date:** [November 5, 2021, 9:42pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321/4 "2021-11-05T21:42:24Z")

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Hi Bob, a lot of the glider data is now available in the [IOOS Glider DAC](https://gliders.ioos.us/map/#). You can search by year, and then click on a glider track to see quick CTD transect plots at the bottom. If you then click “View ERDDAP” in the lower left, it takes you to the full dataset, which generally includes the other variables merged into one dataset. For example, here’s the 2019 deployment of [CP\_340](https://gliders.ioos.us/erddap/tabledap/cp_340-20190927T1226-delayed.html), which seems to include both Chl-a and PAR.

The new Data Explorer has a much nicer interface for [searching glider datasets](https://dataexplorer.oceanobservatories.org/#ooi/array/CP/moving-platforms?parameter_id=187), and it looks like it provides merged datasets as well.

So it’s nice to have a few different options. Not sure if Jeff has any guidance on the advantages or differences between the two.

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**Author:** ![rvaillancourt](https://avatars.discourse-cdn.com/v4/letter/r/c77e96/32.png) [@rvaillancourt](https://discourse.oceanobservatories.org/u/rvaillancourt)\
**Post date:** [November 5, 2021, 10:19pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321/5 "2021-11-05T22:19:42Z")

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Thanks Sage, that is very useful.

-Bob

![~WRD0001.jpg](https://canada1.discourse-cdn.com/flex036/uploads/ooidata/original/1X/52d5f1c08649212fe6768d2cacdcf8df711810d9.jpeg)

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**Author:** ![jglatstein](https://avatars.discourse-cdn.com/v4/letter/j/87869e/32.png) [@jglatstein](https://discourse.oceanobservatories.org/u/jglatstein)\
**Post date:** [November 15, 2021, 1:16pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321/6 "2021-11-15T13:16:07Z")

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Thanks Sage for your input. Data Explorer is fed from the Glider DAC. The advantage of using [Data Explorer](https://dataexplorer.oceanobservatories.org/#) is the ability to search and visualize the glider data next to the other data produced by OOI.

-Jeff

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**Author:** ![iblack](https://avatars.discourse-cdn.com/v4/letter/i/3ec8ea/32.png) [@iblack](https://discourse.oceanobservatories.org/u/iblack)\
**Post date:** [November 29, 2021, 6:53pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321/7 "2021-11-29T18:53:06Z")

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Hi Jeff,

Is there a timeline for when older PA recovered glider deployments (-delayed) will be available in the Glider DAC ERDDAP?

Thanks,

- Ian

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**Author:** ![cdobson](https://avatars.discourse-cdn.com/v4/letter/c/da6949/32.png) [@cdobson](https://discourse.oceanobservatories.org/u/cdobson)\
**Post date:** [November 29, 2021, 7:58pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321/8 "2021-11-29T19:58:27Z")

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Hi Ian,

We are actively working through the backlog of DAC submissions for Pioneer and Global Array glider datasets. I would expect the effort to be completed by the end of January.

Thanks!  
Collin

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**Author:** ![iblack](https://avatars.discourse-cdn.com/v4/letter/i/3ec8ea/32.png) [@iblack](https://discourse.oceanobservatories.org/u/iblack)\
**Post date:** [November 29, 2021, 8:16pm UTC](https://discourse.oceanobservatories.org/t/aggregating-glider-data/321/9 "2021-11-29T20:16:51Z")

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Thanks for the update!