Skip to main content Link Menu Expand (external link) Document Search Copy Copied

Sentinel-5P Methane - CH4

//VERSION=3
var minVal = 1600.0;
var maxVal = 2000.0;
var diff = maxVal - minVal;
const map = [
	[minVal, 0x00007f], 
	[minVal + 0.125 * diff, 0x0000ff],
	[minVal + 0.375 * diff, 0x00ffff],
	[minVal + 0.625 * diff, 0xffff00],
	[minVal + 0.875 * diff, 0xff0000],
	[maxVal, 0x7f0000]
]; 

const visualizer = new ColorRampVisualizer(map)
function setup() {
   return {
    input: ["CH4","dataMask"],
    output: { bands: 4 }
  };
}

function evaluatePixel(samples) {
   const [r, g, b] = visualizer.process(samples. CH4);
   return [r, g, b, samples.dataMask];
}

Evaluate and Visualize

Description

Methane is, after carbon dioxide, the most important contributor to the anthropogenically (caused by human activity) enhanced greenhouse effect. Measurements are provided in parts per billion (ppb) with a spatial resolution of 7 km x 3.5 km. Find more information here.

Description of representative images

High methane concentrations over Burkina Faso, 2019-03-14. NO2 tropospheric column