Show script or download{:target="_blank"} it.
{% highlight javascript %}
{% include_relative script.js %}
{% endhighlight %}
- EO Browser{:target="_blank"}
The Sentinel-3 OLCI Normalized Difference Bare ice Index (NDBI) was developed by Kokhanovsky et al. (2020) to differentiate snow-covered surfaces from bare ice. NDBI used two bands: one in the Blue (Band 2, 412.5 nm) and one in the NIR (Band 21, 1020 nm).
Formula: (Band 02 - Band 21) / (Band 02 + Band 21)
The surface types corresponding to NDBI values are shown in the table below. The thresholds may be modified depending on local conditions.
| Values | Surface |
|---|---|
| 0--0.2 | Snow |
| 0.2--0.5 | Bare ice |
| 0.5--0.8 | Dark ice (melting) |
- NDBI of South Greenland, acquired on 29 August 2019.
- Classified NDBI map of South Greenland, acquired on 29 August 2019 (Light blue = snow, pink = ice, dark blue = dark ice, black = other surfaces).
- For comparison purposes: RGB (B17, B07, B03) image of South Greenland, acquired on 29 August 2019.)
Maxim Lamare