usgs_espa_ls8c1_ar: Landsat 8 USGS Collection 1 Aquatic Reflectance, processed using LaSRC. 30m UTM based projection.

All years

Landsat 8 USGS Collection 1 Aquatic Reflectance, processed using LaSRC. 30m UTM based projection.

usgs_espa_ls8c1_ar whole collection

Last processed
8,166 datasets
  • 3,744,326km2 (approx.)
  • 122 unique regions
  • 11 CRS

Metadata (eo3)

Common fields

dataset_maturity • format GeoTIFF platform landsat-8 product_family level-2

JSON / GeoJSON

Location 🔗 (samples)

s3://easi-dc-data/products-index/usgs_espa_ls8c1_ar/2021/

Measurements 🔗

nodata
int16 coastal_aerosol / ar_band1 / band_1 / ar_coastal_aerosol -9999
int16 blue / ar_band2 / band_2 / ar_blue -9999
int16 green / ar_band3 / band_3 / ar_green -9999
int16 red / ar_band4 / band_4 / ar_red -9999
uint16 pixel_qa / pixel_quality / level2_qa 1
int32 ar_flags / l2_flags / ar_qa -9999

Total: 6

Definition 🔗

RAW As Stac
name: usgs_espa_ls8c1_ar
metadata_type: eo3
description: Landsat 8 USGS Collection 1 Aquatic Reflectance, processed using LaSRC. 30m UTM based projection.
metadata:
product:
name: usgs_espa_ls8c1_ar
measurements: [
name: coastal_aerosol
dtype: int16
units: reflectance
nodata: -9999
aliases: [
ar_band1
band_1
ar_coastal_aerosol
]
name: blue
dtype: int16
units: reflectance
nodata: -9999
aliases: [
ar_band2
band_2
ar_blue
]
name: green
dtype: int16
units: reflectance
nodata: -9999
aliases: [
ar_band3
band_3
ar_green
]
name: red
dtype: int16
units: reflectance
nodata: -9999
aliases: [
ar_band4
band_4
ar_red
]
name: pixel_qa
dtype: uint16
units: bit_index
nodata: 1
aliases: [
pixel_quality
level2_qa
]
flags_definition:
snow:
bits: 4
values:
0: no_snow
1: snow
clear:
bits: 1
values:
0: no_clear_land
1: clear_land
cloud:
bits: 5
values:
0: no_cloud
1: cloud
water:
bits: 2
values:
0: no_water
1: water
nodata:
bits: 0
values:
0: False
1: True
pixel_qa:
bits: [
0
1
2
3
4
5
6
7
8
9
10
]
values:
1: Fill
2: Clear
4: Water
8: Cloud shadow
16: Snow
32: Cloud
64: Cloud Confidence low bit
128: Cloud Confidence high bit
256: Cirrus Confidence low bit
512: Cirrus Confidence high bit
1024: Terrain Occlusion
description: Level 2 pixel quality
cloud_shadow:
bits: 3
values:
0: no_cloud_shadow
1: cloud_shadow
cloud_confidence:
bits: [
6
7
]
values:
0: none
1: low
2: medium
3: high
cirrus_confidence:
bits: [
8
9
]
values:
0: none
1: low
2: medium
3: high
terrain_occlusion:
bits: 10
values:
0: no_occlusion
1: occlusion
name: ar_flags
dtype: int32
units: bit_index
nodata: -9999
aliases: [
l2_flags
ar_qa
]
flags_definition:
HILT:
bits: 4
values:
0: False
1: True
description: High total radiance measured by sensor
land:
bits: 1
values:
0: False
1: True
description: Designated by the input land file
CLOUD:
bits: 9
values:
0: False
1: True
description: Cloud based on the cloud mask algorithm
HIPOL:
bits: 29
values:
0: False
1: True
description: Degree of polarization for any band is > hipol (0.5)
LOWLW:
bits: 14
values:
0: False
1: True
description: Water-leaving radiance band 3 < 0.15
COASTZ:
bits: 6
values:
0: False
1: True
description: Controlled via the bathymetry file based on the latitude/longitude of the pixel
FILTER:
bits: 26
values:
0: False
1: True
description: Not enough valid pixels in the filter to compute the average
SEAICE:
bits: 24
values:
0: False
1: True
description: Controlled via the ice file based on the latitude/longitude of the pixel
ATMWARN:
bits: 22
values:
0: False
1: True
description: Value is invalid based on ancillary QC flags (ozone, water vapor, RH, wind speed, surface pressure)
CHLFAIL:
bits: 15
values:
0: False
1: True
description: Failure in the chlorophyll-a calculation
CHLWARN:
bits: 21
values:
0: False
1: True
description: Chlorophyll-a < min_valid or chlorophyll-a > max_valid
HIGLINT:
bits: 3
values:
0: False
1: True
description: Glint coefficient > glint threshold (0.005)
RRSWARN:
bits: 18
values:
0: False
1: True
description: Rrs < min_valid or Rrs > max_valid
TURBIDW:
bits: 11
values:
0: False
1: True
description: Turbid water if LwB4 / FonomB4 > 0.0012
atmfail:
bits: 0
values:
0: False
1: True
description: Atmospheric correction failed
HISATZEN:
bits: 5
values:
0: False
1: True
description: View angle > threshold (60 deg)
HISOLZEN:
bits: 12
values:
0: False
1: True
description: Solar angle > threshold (70 deg)
MODGLINT:
bits: 20
values:
0: False
1: True
description: Glint coefficient > minimum glint threshold (0.0001)
PRODFAIL:
bits: 30
values:
0: False
1: True
description: Processing failure
PRODWARN:
bits: 2
values:
0: False
1: True
description: Intermediate product value falls outside the min/max range
l2_flags:
bits:
[ [31 items...]
0,
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
21,
22,
23,
24,
25,
26,
27,
28,
29,
30,
]
values:
1: ATMFAIL
2: LAND
4: PRODWARN
8: HIGLINT
16: HILT
32: HISATZEN
64: COASTZ
128: SEADAS_CLOUD
256: CLOUD_SHADOW
512: CLOUD
1024: COCCOLITH
2048: TURBIDW
4096: HISOLZEN
8192: SPARE1
16384: LOWLW
32786: CHLFAIL
65536: NAVWARN
131072: SPARE2
262144: RRSWARN
524288: MAXAERITER
1048576: MODGLINT
2097152: CHLWARN
4194304: ATMWARN
8388608: SPARE3
16777216: SEAICE
33554432: NAVFAIL
67108864: FILTER
134217728: SPARE4
268435456: SPARE5
536870912: HIPOL
1073741824: PRODFAIL
description: Aquatic reflectance processing flags
COCCOLITH:
bits: 10
values:
0: False
1: True
description: Coccolithophore bloom based on the coccolithophore algorithm coefficients
MAXAERITER:
bits: 19
values:
0: False
1: True
description: Number of iterations for the aerosol corrections exceeds the maximum threshold (10)
CLOUD_SHADOW:
bits: 8
values:
0: False
1: True
description: Cloud shadow based on the cloud mask algorithm
SEADAS_CLOUD:
bits: 7
values:
0: False
1: True
description: Cloud based on SeaDAS algorithm
]