{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Sentinel-2 MSI Level 2A - Composite Imagery, Normalized Burn Ratio and Burn Severity"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"```{hint} \n",
"Execute the notebook on the training platform >>\n",
"```"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"This notebook provides you an introduction to data from the [Sentinel-2 MultiSpectral Instrument (MSI)](https://sentinel.esa.int/web/sentinel/missions/sentinel-2/instrument-payload), which has has 13 spectral bands which provide data for land cover/change classification, atmospheric correction and cloud/snow separation. This notebook demonstrates several ways that Level 2A data from Sentinel-2 can be used, including the creation of composite imagery, calculation of a burn index and burn severity mapping. \n",
"\n",
"The event featured is the [August Complex fire](https://www.fire.ca.gov/incidents/2020/8/16/august-complex-includes-doe-fire/) in California, USA in 2020. This was the largest wildfire in CA history, spreading over 1,000,000 acres (over 4,000 sq km). The image shown in this notebook is taken from 7 October 2020. "
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"``` {admonition} Basic Facts\n",
"**Spatial resolution**: `10m, 20m and 60m`
\n",
"**Spatial coverage**: `Global`
\n",
"**Revisit time**: `5 days at the equator`
\n",
"**Data availability**: `since Mar 2017`\n",
"```"
]
},
{
"cell_type": "markdown",
"metadata": {
"tags": []
},
"source": [
"``` {admonition} How to access the data\n",
"Sentinel-2 Level 2A data can be obtained via the Copernicus Open Access Hub and are disseminated as `.zip archives` when downloaded. You need to register for an account before downloading data.\n",
"\n",
"The data when unzipped, are in \"SENTINEL-SAFE format, including image data in JPEG2000 format, quality indicators (e.g. defective pixels mask), auxiliary data and metadata.\" Learn more about the data format here.\n",
"```"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"