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

[Veronica Andreo]

Hi Vishal,

What about https://worldview.earthdata.nasa.gov/?t=2020-08-17-T12%3A21%3A52Z
?
With `Add layers` you can add the active fire over it

best,
Vero

El vie., 21 ago. 2020 a las 0:09, Vishal Mehta (<vishalm1975 at gmail.com>)
escribió:

> 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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