ASTER
Spectral Library Version 1.2
The ASTER spectral library includes
data from three other spectral libraries: the Johns
Hopkins University (JHU) Spectral Library the Jet
Propulsion Laboratory (JPL) Spectral Library, and
the United States Geological Survey (USGS - Reston)
Spectral Library.
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MODIS
UCSB Emissivity Library
Emissivity measurements of natural and manmade
materials that may be used as a source of spectral
emissivities at the component level in the TIR
BRDF models to calculate the scene emissivities.
Samples of emissivity spectra are separated into
four categories:
- Water, ice, and snow
- Soil and Minerals
- Vegetation
- Manmade materials
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LOPEX - Leaf Optical
Properties Experiment
An experiment was organized
in the Joint Research Centre at Ispra during the summer
of 1993 in which a data set associating visible / infrared
spectra of vegetation elements (leaves, conifer needles,
stems, etc) with physical measurements and biochemical
analyses was constructed. About 70 leaf samples representative
of more than 50 species of woody and herbaceous plants
(4 Gymnosperms, 9 Monocotyledons, and 37 Dicotyledons)
were obtained from trees, crops and plants in the area
of the JRC
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Infrared
Emissivity Atlases
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UW/CIMSS
Baseline Fit Global Infrared Land Surface Emissivity
Database
A global infrared land surface emissivity
database with high spectral and high spatial resolution
is introduced. For a given month, a spectrum of emissivity
from 3.7 to 14.3 micron is available from this database
for every latitude/longitude point globally at 0.05
degree resolution.
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CIMSS
AIRS Spectral Variance Emissivity Dataset
A global infrared land surface emissivity
dataset retrieved from the AIRS sensor aboard NOAA
AQUA satellite. |
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NOAA/NESDIS
AIRS Emissivity Global Datasets
1. AIRS emissivity regression derived
from 20 AIRS channels then interpolated to all wavelengths.
2. AIRS emissivity physical retrieved then interpolated to all wavelengths.
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MODIS LST/Emissivity Product
MODIS Land Surface Temperature and
Emissivity (LST/E) products provide per-grid temperature
and emissivity values. MOD11B1 and MYD11B1 - daily
level 3 LST product at 5km (V4) or 6km (V5) spatial
resolution gridded in the Sinusoidal projection.
Emissivity retrieved at MODIS bands 20,22,23,29, & 31-32 (3.75,3.96,4.05,8.55,11.03,12.02 µm)
also available in the daily level 3 global CMG LST products (MOD11C1
and MYD11C1) at 0.05o latitude/longitude grids.
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The MOD43B1 BRDF/Albedo Model Parameters
Product (MODIS/Terra BRDF/Albedo Model_1 16-Day L3
Global 1km SIN Grid) supplies the weighting parameters
associated with the RossThickLiSparseReciprocal BRDF
model that best describes the anisotropy of each
pixel. Model parameters are provided for MODIS spectral
bands 1-7 (0.659, 0.865, 0.470, 0.555, 1.24, 1.64,
2.13µm) as well as for three broad bands (0.3-0.7µm,
0.7-5.0µm, and 0.3-5.0µm).
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The MODIS Surface-Reflectance Product
(MOD 09) is computed from the MODIS Level 1B land bands
1, 2, 3, 4, 5, 6, and 7 (centered at 648 nm, 858 nm,
470 nm, 555 nm, 1240 nm, 1640 nm, and 2130 nm, respectively).
The product is an estimate of the surface spectral
reflectance for each band as it would have been measured
at ground level if there were no atmospheric scattering
or absorption.
Coverage: Global land surface (Level 2G, 3)
Spatial/Temporal Characteristics: Bands 1 and 2, 250 m; bands 3-7, 500
m; daylight data only
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| Infrared
Surface Property Modelling
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This software code simulates the transfer
of solar radiation in a plant canopy and provides accurate
estimates of the bidirectional reflectance of such
a system as a function of the geometry of illumination
and observation, as well as of the physical and structural
properties of the canopy.
It can simulate the reflectance of a canopy of finite
depth and includes the contribution of the underlying
ground surface. This model also allows the plant canopy
to be described through such variables as the number,
size and orientation of the leaves, as well as the
total height of the canopy. A turbid medium approach
is used to represent the contribution to the total
reflectance due the light scattering at orders higher
than one.
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Radiative transfer model which calculates
the leaf hemispherical reflectance and transmittance
from 400 to 2500 nm. Scattering is described by the
refractive index of leaf materials (n) and by a parameter
characterizing the leaf mesophyll structure (N). Absorption
is calculated from the concentrations of the biochimicals
and the specific absorption corresponding coefficients. |
