HR: 1330h
AN: C32A-0429    [PDF]
TI: The ICESat/GLAS Data Visualizer
AU: * Guerber, J R
EM: jeff.guerber@gsfc.nasa.gov
AF: Raytheon ITSS, NASA Goddard Space Flight Center Oceans and Ice Branch, code 971, Greenbelt, MD 20771 United States
AU: Barbieri, K A
EM: kristine.barbieri@gsfc.nasa.gov
AF: Raytheon ITSS, NASA Goddard Space Flight Center Oceans and Ice Branch, code 971, Greenbelt, MD 20771 United States
AU: Brenner, A C
EM: anita.brenner@gsfc.nasa.gov
AF: Raytheon ITSS, NASA Goddard Space Flight Center Oceans and Ice Branch, code 971, Greenbelt, MD 20771 United States
AU: DiMarzio, J P
EM: john.dimarzio@gsfc.nasa.gov
AF: Raytheon ITSS, NASA Goddard Space Flight Center Oceans and Ice Branch, code 971, Greenbelt, MD 20771 United States
AU: Roberts, L
EM: leeanne.roberts@gsfc.nasa.gov
AF: Raytheon ITSS, NASA Goddard Space Flight Center Oceans and Ice Branch, code 971, Greenbelt, MD 20771 United States
AU: Santana, J
EM: jairo.santana@gsfc.nasa.gov
AF: Raytheon ITSS, NASA Goddard Space Flight Center Oceans and Ice Branch, code 971, Greenbelt, MD 20771 United States
AU: Sidel, T
EM: zipora.sidel@gsfc.nasa.gov
AF: Raytheon ITSS, NASA Goddard Space Flight Center Oceans and Ice Branch, code 971, Greenbelt, MD 20771 United States
AU: Zwally, H
EM: zwally@icesat2.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, NASA Goddard Space Flight Center Oceans and Ice Branch, code 971, Greenbelt, MD 20771 United States
AB: The ICESat Science Computing Facility (SCF) team has developed a software package for visualizing Geoscience Laser Altimeter System (GLAS) Level 1 and Level 2 surface altimetry, atmospheric lidar, and engineering data products. Rapid geographic and temporal sub-setting is performed with the GLAS SCF Data Management System. Along-track time-series plots show related parameters from multiple products and may be zoomed to the temporal resolution of the data. Available altimetry parameters include elevations and surface properties; atmospheric and tidal corrections; waveform and fit characteristics; and instrument orientation. Among the lidar parameters are along-track backscatter images with cloud and aerosol layers; atmospheric optical properties; and returned, transmitted, and background energies. Multiple time series may be displayed simultaneously, allowing investigation of interrelationships among parameters. Difference windows permit direct comparison of curves within a plot set. Individual returned waveforms, fitted-waveform models, laser-beam intensity images, and lidar-backscatter profiles can be displayed for any selected point in a time series. The ground track and location of the selected data are displayed on a zoomable map or DEM. Users have control over displayed curves and plot properties. PostScript files can be produced from all plots, and parameters may be dumped to ASCII files. The data visualizer is written in Interactive Data Language (IDL) in a highly modular fashion making extensive use of reusable components, object classes, and object-widget techniques. The visualizer will be made available through the NSIDC along with the GLAS data products in a form that can access data files without the sub-setting capabilities of the Data Management System. The presentation will describe the visualizer design, demonstrate its capabilities, and discuss aspects of its underlying architecture.
UR: http://icesat.gsfc.nasa.gov
DE: 0305 Aerosols and particles (0345, 4801)
DE: 1200 GEODESY AND GRAVITY
DE: 1827 Glaciology (1863)
DE: 3360 Remote sensing
DE: 4556 Sea level variations
SC: Cryosphere [C]
MN: 2003 Fall Meeting