How can we compare SENTINEL vs LANDSAT for NDVI?

17 June 2024 1 2K Report

A question to see who can answer it. If the red and infrared bands of the satellites are these:

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Satellite.................................Landsat 8 / 9.................................Sentinel 2...................................

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....Red..............................Band 4: 0.64-0.67 μm.....................Band 4: 0.53-0.68 μm

Infrared............................Band 5: 0.85-0.89 μm....................Band 6: 0.70-0.80 μm

...................................................................................................Band 7: 0.81-0.92 μm

...................................................................................................Band 8: 1.20-1.30 μm

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Why do you use band 5 in Landsat and band 8 in Sentinel to estimate NDVI? Wouldn't it be more appropriate to use band 7 in Sentinel?

Thanks.D

Hassan Nait-Si

Band 5 in Landsat 8 and 9 represent NIR wich is more appropriate to calculate NDVI, for the Sentinel 2 the Band 8 (835.1nm (S2A) / 833nm (S2B)) is also in the NIR range its more appropriate than Band 7 (782.5nm (S2A) / 779.7nm (S2B)) which represent Red Edge 3. you can check the Sentinal 2 Wavelengths Bands in the link bellow :

https://developers.google.com/earth-engine/datasets/catalog/COPERNICUS_S2_SR_HARMONIZED

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