});

custom-scripts

A repository of custom scripts that can be used with Sentinel-Hub services.

Landsat 8 Bands

Band 1

B01 (Ultra Blue)

Use: senses deep blues and violets. Blue light is hard to collect from space because it’s scattered easily by tiny bits of dust and water in the air, and even by air molecules themselves. This is one reason why very distant things (like mountains on the horizon) appear blueish, and why the sky is blue. Just as we see a lot of hazy blue when we look up at space on a sunny day, Landsat 8 sees the sky below it when it looks down at us through the same air. That part of the spectrum is hard to collect with enough sensitivity to be useful, and Band 1 is the only instrument of its kind producing open data at this resolution – one of many things that make this satellite special. It’s also called the coastal/aerosol band, after its two main uses: imaging shallow water, and tracking fine particles like dust and smoke (source).

Custom script: return [B01];

B1

Band 2

B02 (Blue )

Use: scattered by the atmosphere and illuminates material in shadows better than longer wavelengths; penetrates clear water better than other colors; absorbed by chlorophyll, so plants don’t show up very brightly in this band; useful for soil/vegetation discrimination, forest type mapping, and identifying man-made features.

Custom script: return [B02];

B2

Band 3

B03 (Green )

Use: penetrates clear water fairly well, gives excellent contrast between clear and turbid (muddy) water; helps find oil on the surface of water, and vegetation (plant life); reflects more green light than any other visible color; man-made features are still visible.

Custom script: return [B03];

B3

Band 4

B04 (Red )

Use: limited water penetration; reflects well from dead foliage, but not well from live foliage with chlorophyll; useful for identifying vegetation types, soils, and urban (city and town) features.

Custom script: return [B04];

B4

Band 5

B05 (NIR)

Use: measures the near infrared, or NIR. This part of the spectrum is especially important for ecology because healthy plants reflect it – the water in their leaves scatters the wavelengths back into the sky. By comparing it with other bands, we get indexes like NDVI, which let us measure plant health more precisely than if we only looked at visible greenness.

Custom script: return [B05];

B5

Bands 6 and 7

B06 and B07 (SWIR)

Use: cover different slices of the shortwave infrared, or SWIR. They are particularly useful for telling wet earth from dry earth, and for geology: rocks and soils that look similar in other bands often have strong contrasts in SWIR.

Custom script: return [B06];

Band 6 B6

Band 7 B7

Band 8

B08 (Panchromatic - “pan”)

Use: is the panchromatic – or just pan – band. It works just like black and white film: instead of collecting visibile colors separately, it combines them into one channel. Because this sensor can see more light at once, it’s the sharpest of all the bands, with a resolution of 15 meters (50 feet).

Custom script: return [B08];

B8

Band 9

B09 (Cirrus)

Use: is the panchromatic – or just pan – band. It works just like black and white film: instead of collecting visibile colors separately, it combines them into one channel. Because this sensor can see more light at once, it’s the sharpest of all the bands, with a resolution of 15 meters (50 feet).

Custom script: return [B08];

B8

Bands 10 and 11

B10 and B11 (TIRS)

Use: are in the thermal infrared, or TIR – they see heat. Instead of measuring the temperature of the air, like weather stations do, they report on the ground itself, which is often much hotter.

Custom script: return [B10];