> ## Documentation Index
> Fetch the complete documentation index at: https://data.avert.ldeo.columbia.edu/llms.txt
> Use this file to discover all available pages before exploring further.

# Products

Data from the two ScanningDOAS instruments deployed at Cleveland volcano are archived at the [Cascades Volcano Observatory](https://cvo-valve.wr.usgs.gov/valve3/). To view the time-series data for these stations, select 'Gas' > 'Scanning DOAS' in the left-hand menu.

* The CLNE ScanningDOAS was operational from September 2022.
* The CLES ScanningDOAS was operational from May 2023.

<img src="https://avert-legacy.ldeo.columbia.edu/gas/static/img/example-view.png" alt="Example view of Scanning DOAS data" height="400" className="rounded-lg" />

<Card title="SO₂ Concentrations" horizontal>
  Spectra collected at multiple elevation angles yield SO₂ concentrations across
  plume transects.
</Card>

<Card title="Emission Rates" horizontal>
  By combining measured SO₂ concentrations with wind speed and direction, flux
  estimates are produced and streamed in near real time.
</Card>