HR: 0830h
AN: A41D-0713    [PDF]
TI: Long Term Calibration of the HALOE Instrument
AU: Magill, B E
EM: b.e.magill@gats-inc.com
AF: G \& A Technical Software, Inc., 11864 Canon Blvd., Suite 101, Newport News, VA 23606 United States
AU: * Gordley, L L
EM: l.l.gordley@gats-inc.com
AF: G \& A Technical Software, Inc., 11864 Canon Blvd., Suite 101, Newport News, VA 23606 United States
AU: Thompson, R E
EM: r.e.thompson@gats-inc.com
AF: G \& A Technical Software, Inc., 11864 Canon Blvd., Suite 101, Newport News, VA 23606 United States
AU: Russell, J M
EM: james.russell@hamptonu.edu
AF: Hampton University, 23 Tyler St., Hampton, VA 23668 United States
AU: Remsberg, E E
EM: e.e.remsberg@larc.nasa.gov
AF: NASA Langley Research Center, 21 Langley Blvd., Hampton, VA 23681-2199 United States
AB: HALOE has been in operation for over 12 years providing quality data from the upper troposphere through the mesopause. Monitoring the stability of the experiment is important to ensure a consistent data set spanning such a long time period. Four calibration tests used to routinely ascertain instrument performance will be described here: gas cell concentration, gain, boresight, and field of view (FOV) mismatch. The concentrations of the species in the gas cells that are utilized in the gas correlation channels are determined by a novel approach using the retrieval results themselves. The gains between the gas cell and vacuum paths are determined by instrument scans of the solar disk and the onboard blackbody. The boresight accuracy of HALOE's telescope and the FOV mismatch function between the detectors for each gas correlation channel are determined from special solar scan data. Trends in this calibration data and their effect on final products will be presented along with techniques for determining new calibration values.
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting