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Optical Imaging and Field Spectroscopy:CLPX 2002 and 2003Thomas H. Painter
8th CLP Workshop, Boulder, CO
Spectroscopists
• Rick Forster (U of Utah)• Nate Mulherin (CRREL)• H.P. Marshall (U of Colorado)• Elke Ochs (CRREL)• Janet Hardy (CRREL)• Michael Eastwood, Chuck
Sarture, Ian McCubbin, Robert Green (JPL)
8th CLP Workshop, Boulder, CO
Hyperspectral Remote Sensing
• Greatest spectral leverage for– Subpixel snow covered area– Canopy closure– Subpixel snow grain size– Snow impurity concentrations– Subpixel snow albedo– Snow surface liquid water content– Vegetation classification (e.g. Potter Creek Site)
• Nadir view maximum viewable snow cover
8th CLP Workshop, Boulder, CO
Hyperspectral Remote Sensing
• Comparisons and complementary data– Snow covered area (passive, radar)– Grain size (passive, radar)– Snow liquid water content (passive, radar)– Canopy closure (passive, radar)
• Field spectral albedo comparisons with field passive and radar instrumentation
• Demonstration of complementary spaceborne instrumentation (Hyperion+)
8th CLP Workshop, Boulder, CO
Instruments
• NASA Earth Observing-1 Hyperion (spaceborne)
• NASA/JPL Airborne Visible Infrared Imaging Spectrometer (AVIRIS) (airborne)
• Analytical Spectral Devices Full-Range Field Spectroradiometer (field)
8th CLP Workshop, Boulder, CO
EO-1 HyperionSpectral range 0.4 2.5
m
Number of bands
220
Spatial resolution
30 m
Swath Width 7.8 km
Repeat Cycle 16 days
Local acquisition time
10:30 A.M.
Signal to Noise 40-160
8th CLP Workshop, Boulder, CO
Airborne Visible Infrared Imaging Spectrometer
(AVIRIS)Spectral range
0.4 2.5 m
Number of bands
224
Spatial resolution
20 m (nominal)1.5 m (low alt)
Swath Width 12 km1 km (low alt)
Local acquisition time
variable
Signal to Noise
500-1200
8th CLP Workshop, Boulder, CO
ASD FR Field Spectroradiometer
Spectral range 0.35 – 2.5 m
Spectral resolution
0.003 – 0.010 m
Spectral sampling
0.0014 – 0.002 m
Weight 7.2 kg
8th CLP Workshop, Boulder, CO
ACQUISITIONS
HYPERION
February 15, 2002
Fraser MSA
R: 0.66 m
G: 0.91 m
B: 1.33 m
Fraser Experimenta
l Forest
7.8 km
N
8th CLP Workshop, Boulder, CO
ACQUISITIONS
HYPERION
March 19, 2002
Fraser MSA
R: 0.66 m
G: 0.91 m
B: 1.33 m
Fraser Experimenta
l Forest
N
8th CLP Workshop, Boulder, CO
Fraser MSA
St. Louis Creek ISA
Fool Creek ISA
Alpine ISA
LSOS
HYPERION
March 19, 2002
Fraser MSA
R: 0.66 m
G: 0.91 m
B: 1.33 m
8th CLP Workshop, Boulder, CO
Field Calibration
8th CLP Workshop, Boulder, CO
LSOS Field Spectra
8th CLP Workshop, Boulder, CO
LSOS Field Spectra
March 31, 2002, IOP-2
= 36°, = 0°
8th CLP Workshop, Boulder, CO
Field Calibration
8th CLP Workshop, Boulder, CO
Hyperion – calibrated spectra
Field calibrated
wavelength (m)
1.0
0.8
0.6
0.4
0.2
0.0re
flect
ance
Hatch retrieved
wavelength (m)
1.0
0.8
0.6
0.4
0.2
0.0
reflect
ance
8th CLP Workshop, Boulder, CO
AVIRISCLPX Acquisitions
8th CLP Workshop, Boulder, CO
2002 Acquisitions
Fraser MSA, April 4, 2002
8th CLP Workshop, Boulder, CO
ACQUISITIONS
Fraser MSA, April 4, 2002
8th CLP Workshop, Boulder, CO
ACQUISITIONS
AVIRIS
April 4, 2002
Rabbit Ears MSA
R: 0.66 mG: 0.91 mB: 1.33 m
N
8th CLP Workshop, Boulder, CO
ACQUISITIONS
AVIRIS
April 4, 2002
Rabbit Ears MSA
R: 0.66 mG: 0.91 mB: 1.33 m
N
8th CLP Workshop, Boulder, CO
ACQUISITIONS
AVIRIS
April 4, 2002
Rabbit Ears MSA
R: 0.66 mG: 0.91 mB: 1.33 m
N
8th CLP Workshop, Boulder, CO
ACQUISITIONS
AVIRIS
April 5, 2002
North Park MSA
R: 0.66 mG: 0.91 mB: 1.33 m
N
8th CLP Workshop, Boulder, CO
ACQUISITIONS
AVIRIS
April 4, 2002
Fraser MSA
(Alpine ISA)
R: 0.66 mG: 0.91 mB: 1.33 m
N
8th CLP Workshop, Boulder, CO
Vegetation Classification
RGB Minimum Distance
Potter Creek ISA/NCAR Tower - April 4, 2002
8th CLP Workshop, Boulder, CO
Mt. Rainier, WAUSA4393 mAVIRIS14 June 1996
= 409.4 nm
= 1324.0 nm
= 2269.3 nm
8th CLP Workshop, Boulder, CO
Mt. Rainier, WAUSA4393 mAVIRIS14 June 1996
Water Vapor
8th CLP Workshop, Boulder, CO
Mt. Rainier, WAUSA4393 mAVIRIS14 June 1996
Liquid Water
8th CLP Workshop, Boulder, CO
Mt. Rainier, WAUSA4393 mAVIRIS14 June 1996
Ice/Snow
8th CLP Workshop, Boulder, CO
Mt. Rainier, WAUSA4393 mAVIRIS14 June 1996
= Water Vapor
= Liquid Water
= Ice/Snow
8th CLP Workshop, Boulder, CO
2003 CLPX Acquisitions (Quicklooks) – February
19
Fraser Experimental Forest MSA
8th CLP Workshop, Boulder, CO
Hyperion Distribution
http://nsidc.org/data/clpx/
8th CLP Workshop, Boulder, CO
AVIRIS Distribution
http://nsidc.org/data/clpx/
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