HR: 0800h
AN: A31B-0306    [Abstracts]
TI: Cross-Calibration Approach Improves Accuracy for Hyperspectral Imaging
AU: * Kopp, G
EM: Greg.Kopp@LASP.Colorado.edu
AF: LASP, Univ. of Colorado 1234 Innovation Dr., Boulder, CO 80303, United States
AU: Pilewskie, P
EM: Peter.Pilewskie@LASP.Colorado.edu
AF: LASP, Univ. of Colorado 1234 Innovation Dr., Boulder, CO 80303, United States
AU: Harber, D
EM: David.Harber@LASP.Colorado.edu
AF: LASP, Univ. of Colorado 1234 Innovation Dr., Boulder, CO 80303, United States
AU: Harder, J
EM: Jerry.Harder@LASP.Colorado.edu
AF: LASP, Univ. of Colorado 1234 Innovation Dr., Boulder, CO 80303, United States
AU: McClintock, B
EM: Bill.McClintock@LASP.Colorado.edu
AF: LASP, Univ. of Colorado 1234 Innovation Dr., Boulder, CO 80303, United States
AU: Lewis, R
EM: Ryan.Lewis@LASP.Colorado.edu
AF: LASP, Univ. of Colorado 1234 Innovation Dr., Boulder, CO 80303, United States
AU: Richard, E
EM: Erik.Richard@LASP.Colorado.edu
AF: LASP, Univ. of Colorado 1234 Innovation Dr., Boulder, CO 80303, United States
AU: Sparn, T
EM: Tom.Sparn@LASP.Colorado.edu
AF: LASP, Univ. of Colorado 1234 Innovation Dr., Boulder, CO 80303, United States
AU: Young, J
EM: Jason.Young@LASP.Colorado.edu
AF: LASP, Univ. of Colorado 1234 Innovation Dr., Boulder, CO 80303, United States
AB: Hyperspectral imaging of the Earth's surface in the visible and near infrared from the CLARREO mission requires high levels of radiometric accuracy with stability maintained on-orbit. Traditional approaches rely on ground- based calibrations for accuracy and on-board sources for tracking post-launch changes in instrument sensitivity. The proposed on-orbit cross-calibration approach improves radiometric accuracy and stability by transferring the highly accurate CLARREO Total Solar Irradiance Sensor's (TSIS's) spectral irradiance measurements to the Earth-viewing hyperspectral imager, supplementing traditional instrument calibrations by maintaining on-orbit traceability of radiometric accuracy as well as long-term sensitivity tracking. With intermittent solar viewing using signal attenuation of large and well-known magnitude, this hyperspectral imager can acquire solar spectral measurements simultaneously with the on-board TSIS, transferring the TSIS's higher absolute accuracy levels to the hyperspectral imager. We present details of this cross-calibration concept and a CLARREO hyperspectral imager instrument design with the desired solar viewing capability.
DE: 1610 Atmosphere (0315, 0325)
DE: 1620 Climate dynamics (0429, 3309)
DE: 1640 Remote sensing (1855)
DE: 1694 Instruments and techniques
DE: 3305 Climate change and variability (1616, 1635, 3309, 4215, 4513)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting