BAI

The Burned Area Index 

The Burned Area Index (BAI) was developed by Chuvieco et al. (2002) to assist in the delineation of burn scars and assessment of burn severity.  It is based on the spectral distance to charcoal reflectance.

bai.png

The script below shows the BAI for Portugal using Landsat-8

<span data-mce-type="bookmark" id="mce_SELREST_start" data-mce-style="overflow:hidden;line-height:0" style="overflow:hidden;line-height:0;">&#65279;</span>
// setup Visualization
var viz = {min:0.0, max:400.0, palette:['green', 'blue', 'yellow', 'red']};

// Data

// get landsat 8 image
var image = ee.Image("LANDSAT/LC08/C01/T1_RT_TOA/LC08_204032_20170802");

// Functions

// calculate BAI
var bai = image.expression(
'1.0 / ((0.1 - RED)**2 + (0.06 - NIR)**2)', {
'NIR': image.select('B5'),
'RED': image.select('B4'),
});

// Add to map
Map.addLayer(bai,viz,"Wildfire portugal");
Map.centerObject(bai,7);
Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s