[GRASS-user] active fire mapping with GRASS GIS?

[Vishal Mehta]

Thanks Markus,

I also came across this and another resource, so part of my needs are met.

however, i notice that these data are derived products, where a pixel is
designated as having a fire based on the temperature anomaly. thi is the
main reason if anyone is following on the firemaps available on google maps
that we are getting huge polygons - basically the boundaries created around
any pixel with a large-ish anomaly.

is there a quick automation workflow possible where False Color
Composites of near-realtime imagery using the thermal band can be created,
which can be updated once a day at the click of a button; and then overlay
the FIRES derived datasets on top? This would allow one to visualize the
earth surface while also overlaying the derived product.

i'm imagining a workflow which automates the finding of imagery as well,
because that part of the workflow (going to the DAAC and finding the
sensors , path, row etc etc) seem as tedious as it ever was..

Best,
Vishal

On Thu, Aug 20, 2020 at 1:23 PM Markus Neteler <neteler at osgeo.org> wrote:

> Hi Vishal,
>
> On Wed, Aug 19, 2020 at 11:42 PM Vishal Mehta <vishalm1975 at gmail.com>
> wrote:
> >
> > Hi all,
> >
> > as you may have heard, there are a lot of active fires in California
> right now.
> >
> > the nearest one is about 30-40 miles away from me. i'm wondering is
> there some guidance on using GRASS GIS for active fire mapping using near
> real time imagery? i've searched online but haven't found something yet.
> (i'm not looking for fire modeling)
>
> Yes, you can get NRT data from here:
> https://firms.modaps.eosdis.nasa.gov/active_fire/
> - Shapefiles
> - Google Earth KML
> - Text Files (CSV)
>
> This you may import (v.import) and visualize/analyse.
>
> Best wishes,
> Markus
>
>
> --
> Markus Neteler, PhD
> https://www.mundialis.de - free data with free software
> https://grass.osgeo.org
> https://courses.neteler.org/blog
>


-- 
Vishal K. Mehta, PhD
Sr. Scientist
Stockholm Environment Institute - US
133 D St Suite F
Davis CA 95616
www.sei-us.org
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