[RS-ecology] Collection 1 L7 & L8 data fusion

[Ben Carlson]

Hello,

I finally have an answer to this question, and I thought I would respond to
this post for future reference. I emailed Dr. Roy and he kindly replied
that the USGS did not correct any spectral differences between L7 and L8,
and that it is still appropriate to apply the regression when fusing L7 and
L8 C1 data.

Ben

On Mon, Jun 24, 2019 at 11:24 AM Ben Carlson <ben.s.carlson at gmail.com>
wrote:

> Hello,
>
> I'm fusing L7 & L8 surface reflectance into an NDVI time-series. I'm using
> the method described in Roy et al. 2016 to convert L7 NDVI to L8 NDVI using
> a simple regression equation found in table 3:
>
> OLI = 0.0235 + 0.9723 * ETM+
>
> However, this method was developed pre-collection1, and I've heard that
> perhaps with collection 1 data I no longer need to adjust ETM+. I've looked
> at the collection 1 description and I don't see any mention of this issue.
> https://www.usgs.gov/land-resources/nli/landsat/landsat-collection-1?qt-science_support_page_related_con=1#qt-science_support_page_related_con
>
> Can anybody provide any more information?
>
> Thank you!
>
> Roy et al. 2016. Characterization of Landsat-7 to Landsat-8 reflective
> wavelength and normalized difference vegetation index continuity. Remote
> Sensing of Environment
>
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