ASTER L1T Radiance

ASTER/AST_L1T_003
Dataset Availability
2000-03-04T00:00:00 - Present
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("ASTER/AST_L1T_003")
Tags
vnir tir swir nir radiance thermal toa imagery eos terra aster usgs

Description

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is a multispectral imager that was launched on board NASA's Terra spacecraft in December, 1999. ASTER can collect data in 14 spectral bands from the visible to the thermal infrared. Each scene covers an area of 60 x 60 km. These scenes, produced by the USGS, contain calibrated at-sensor radiance, ortho-rectified and terrain corrected.

Not all 14 bands were collected in each scene. An asset property named ORIGINAL_BANDS_PRESENT contains the list of bands that are present in each scene.

To convert from Digital Numbers (DN) to radiance at the sensor, the unit conversion coefficients are available in the metadata. See ASTER L1T Product Users' Guide and ASTER L1T Product Specification for more information.

Bands

Bands

Name Min Max Resolution Wavelength Description
B01 1 255 15 meters 0.520-0.600µm

VNIR_Band1 (visible green/yellow)

B02 1 255 15 meters 0.630-0.690µm

VNIR_Band2 (visible red)

B3N 1 255 15 meters 0.780-0.860µm

VNIR_Band3N (near infrared, nadir pointing)

B04 1 255 30 meters 1.600-1.700µm

SWIR_Band4 (short-wave infrared)

B05 1 255 30 meters 2.145-2.185µm

SWIR_Band5 (short-wave infrared)

B06 1 255 30 meters 2.185-2.225µm

SWIR_Band6 (short-wave infrared)

B07 1 255 30 meters 2.235-2.285µm

SWIR_Band7 (short-wave infrared)

B08 1 255 30 meters 2.295-2.365µm

SWIR_Band8 (short-wave infrared)

B09 1 255 30 meters 2.360-2.430µm

SWIR_Band9 (short-wave infrared)

B10 1 4095 90 meters 8.125-8.475µm

TIR_Band10 (thermal infrared)

B11 1 4095 90 meters 8.475-8.825µm

TIR_Band11 (thermal infrared)

B12 1 4095 90 meters 8.925-9.275µm

TIR_Band12 (thermal infrared)

B13 1 4095 90 meters 10.250-10.950µm

TIR_Band13 (thermal infrared)

B14 1 4095 90 meters 10.950-11.650µm

TIR_Band14 (thermal infrared)

Image Properties

Image Properties

Name Type Description
BAD_PIXELS_B01 DOUBLE

Number of bad pixels

BAD_PIXELS_B02 DOUBLE

Number of bad pixels

BAD_PIXELS_B03 DOUBLE

Number of bad pixels

BAD_PIXELS_B04 DOUBLE

Number of bad pixels

BAD_PIXELS_B05 DOUBLE

Number of bad pixels

BAD_PIXELS_B06 DOUBLE

Number of bad pixels

BAD_PIXELS_B07 DOUBLE

Number of bad pixels

BAD_PIXELS_B08 DOUBLE

Number of bad pixels

BAD_PIXELS_B09 DOUBLE

Number of bad pixels

BAD_PIXELS_B10 DOUBLE

Number of bad pixels

BAD_PIXELS_B11 DOUBLE

Number of bad pixels

BAD_PIXELS_B12 DOUBLE

Number of bad pixels

BAD_PIXELS_B13 DOUBLE

Number of bad pixels

BAD_PIXELS_B14 DOUBLE

Number of bad pixels

CLOUDCOVER DOUBLE

Cloud coverage

COARSE_DEM_DATE STRING

Coarse DEM issuance date

COARSE_DEM_NOTE STRING

Coarse DEM comments

COARSE_DEM_VERSION STRING

Coarse DEM version number

FLYING_DIRECTION STRING

The satellite flight direction when observation is done: 'AS' - ascending direction, 'DE' - descending direction

GAIN_COEFFICIENT_B01 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B02 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B03 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B04 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B05 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B06 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B07 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B08 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B09 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B10 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B11 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B12 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B13 DOUBLE

Coefficient used for radiance conversion

GAIN_COEFFICIENT_B14 DOUBLE

Coefficient used for radiance conversion

GAIN_SETTING_B01 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B02 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B03 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B04 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B05 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B06 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B07 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B08 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B09 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B10 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B11 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B12 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B13 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GAIN_SETTING_B14 STRING

Band gain setting: 'HGH' - high, 'NOR' - normal, 'LOW' - low, 'LO1' - low 1, or 'LO2' - low 2

GCP_CHIPS_CORRELATED DOUBLE

How many chips correlated during correlation statistics creation

GEOMETRIC_DB_DATE STRING

Geometric correction data issuance date

GEOMETRIC_DB_VERSION STRING

Geometric correction data version number

GRANULE_REPROCESSING STRING

What reprocessing has been performed on the granule: 'not reprocessed', 'reprocessed once', 'reprocessed twice', or 'reprocessing n times'

ORBIT_NUMBER DOUBLE

The orbit number of the satellite when data is acquired

ORIGINAL_BANDS_PRESENT DOUBLE

List of bands that are present in each scene

PGE_VERSION STRING

The version of PGE

PRODUCTION_TIME DOUBLE

Generation time of this product

QA_PERCENT_INTERPOLATED_DATA DOUBLE

The percentage of interpolated data in the scene

QA_PERCENT_MISSING_DATA DOUBLE

The percentage of missing data in the scene

QA_PERCENT_OUT_OF_BOUNDS_DATA DOUBLE

The percentage of out of bounds data in the scene

RADIOMETRIC_DB_DATE STRING

Radiometric correction data issuance date

RADIOMETRIC_DB_VERSION STRING

Radiometric correction data version number

RESAMPLING_METHOD_B01 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B02 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B03 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B04 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B05 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B06 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B07 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B08 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B09 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B10 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B11 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B12 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B13 STRING

Resampling method: 'BL', 'NN', or 'CC'

RESAMPLING_METHOD_B14 STRING

Resampling method: 'BL', 'NN', or 'CC'

SATELLITE_RECURRENT_CYCLENUMBER DOUBLE

The satellite recurrent cycle number

SATELLITE_REVOLUTION_NUMBER DOUBLE

The satellite revolution number in the cycle

SCENE_PATH DOUBLE

Scene path

SCENE_ROW DOUBLE

Scene row

SCENE_VIEW DOUBLE

Scene view

SOLAR_AZIMUTH DOUBLE

Sun direction as seen from the scene center; azimuth angle in degrees measured eastward from North (0.0<az<360)

SOLAR_ELEVATION DOUBLE

Sun direction as seen from the scene center; elevation angle in degrees (-90.0<el<90.0)

SOURCE_DATA_GRANULE STRING

ID of input AST_L1A data granule used for generating this product

SWIR_POINTING_ANGLE DOUBLE

Pointing angle in degrees

TIR_POINTING_ANGLE DOUBLE

Pointing angle in degrees

VNIR_POINTING_ANGLE DOUBLE

Pointing angle in degrees

Terms of Use

Terms of Use

ASTER data and products distributed by the LP DAAC, with the exception of the ASTER Global Digital Elevation Model (GDEM) dataset (ASTGTM) version 2 (v2), have no restrictions on data use, sale, or subsequent redistribution.

Citations

Citations:

DOI(s)

Explore in Earth Engine

var dataset = ee.ImageCollection('ASTER/AST_L1T_003')
                  .filter(ee.Filter.date('2018-01-01', '2018-08-15'));
var falseColor = dataset.select(['B3N', 'B02', 'B01']);
var falseColorVis = {
  min: 0.0,
  max: 255.0,
};
Map.setCenter(-122.0272, 39.6734, 11);
Map.addLayer(falseColor.median(), falseColorVis, 'False Color');