GLAH09 GLAS/ICESat L2 Global Cloud Heights for Multi-layer Clouds (HDF5) Zwally, H., R. Schutz, D. Hancock, and J. Dimarzio. GLAS/ICESat L2 Global Cloud Heights for Multi-layer Clouds (HDF5) 2013-03-04 Boulder, Colorado USA NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center 33 http://nsidc.org/data/glah09.html http://dx.doi.org/10.5067/ICESAT/GLAS/DATA202 Technical Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 x 1 303 492-2468 x

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA Investigator David Hancock David.W.Hancock@nasa.gov

NASA Goddard Space Flight Center

ISIPS Manager

NASA Goddard Space Flight Center

Wallops Flight Facility

Wallops Island, VA

USA

Investigator H. Jay Zwally Jay.Zwally@nasa.gov 1 301 614-5643 1 301 614-5644

NASA/Goddard Space Flight Center

Laboratory for Hydrospheric Processes

NASA/Goddard Space Flight Center

Code 971

Greenbelt MD 20771 USA Investigator H. Jay Zwally Jay.Zwally@nasa.gov 1 301 614-5643 1 301 614-5644

NASA/Goddard Space Flight Center

Laboratory for Hydrospheric Processes

NASA/Goddard Space Flight Center

Code 971

Greenbelt MD 20771 USA Investigator Robert Schutz

University of Texas at Austin

Center for Space Research

GLAS Science Team Lead

University of Texas at Austin

Center for Space Research

Austin TX 78712-1085 USA Investigator John Dimarzio john.dimarzio@gsfc.nasa.gov 1 301 614-5893

NASA/Goddard Space Flight Center

SGT, Inc.

NASA/Goddard Space Flight Center

Cryospheric Sciences Branch Code 614.1

Greenbelt MD 20771 USA EARTH SCIENCE Atmosphere Clouds Cloud Height EARTH SCIENCE Atmosphere Clouds Cloud Vertical Distribution Elevation Attenuated Backscatter Cross-section Backscatter Cloud Height Cloud Layer Clouds DAAC EOSDIS GLA09 GLAS Global Positioning System GPS ICESat ISIPS Laser Return Energy Lidar Lidar Backscatter Lidar Return Signal NASA NSIDC Orbit Number Precision Attitude Determination Precision Orbit Determination Range ALTIMETERS GLAS Geoscience Laser Altimeter System LIDAR Light Detection and Ranging ICESAT Ice, Cloud and Land Elevation Satellite SATELLITES 2003-02-20 2009-10-11 complete -86 86 -180 180 GEOGRAPHIC REGION GLOBAL ICESAT Ice, Cloud and Land Elevation Satellite Each data granule has associated browse products that users can quickly view to determine the general quality of the data in the granule. English NASA/GSFC/EOS/EO NSIDC_DAAC NASA DAAC at the National Snow and Ice Data Center http://nsidc.org/daac/index.html Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA NSIDC National Snow and Ice Data Center http://nsidc.org Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA FTP 25 GB HDF Bae, S. and B.E. Schutz. 2002. Precision attitude determination (PAD). GLAS algorithm theoretical basis document. Version 2.2. Austin, TX: Center for Space Research, University of Texas at Austin. Center for Space Research. 'ICESat/GLAS.' January 2002. http://www.csr.utexas.edu/glas/. Earth Science Data and Information System (ESDIS). 1996. EOS Ground System (EGS) Systems and Operations Concept. Greenbelt, MD: Goddard Space Flight Center. GLAS Science Team. 2000. Mission Operations Requirement Document (MORD) for the Ice, Cloud and Land Elevation Satellite (ICESat) Mission. Greenbelt, MD: Goddard Space Flight Center. GLAS Science Team. 1997. GLAS Science Requirements. Version 2.01. Greenbelt, MD: Goddard Space Flight Center. Guzzi, R., ed. 2003. Exploring the atmosphere by remote sensing techniques. Heidelberg, Germany: Springer-Verlag. Heroux, D. 2000. Progress report on GLAS interface effort with ECS NOSE. Rev. 29 December 2000. Landover, MD: Emergent-IT/Raytheon. Herring, T.A. and K. Quinn. 1999. Atmospheric delay correction to GLAS laser altimeter ranges. GLAS algorithm theoretical basis document. Version 1.0. Lanham, MD: Science Systems and Applications, Inc. Jester, P., and J. Lee. 2002. GLAS standard data products specification - level 1. Version 6.0. Wallops Island, VA: Raytheon ITSS. Lee, J. 2002. GSAS user's guide: Version 4.0. Wallops Island, VA: Raytheon ITSS. Palm, S., W. Hart, and D. Hlavka. 2002. GLAS atmospheric data products. GLAS algorithm theoretical basis document. Version 4.2. Lanham, MD: Science Systems and Applications, Inc. Rim, H., and B. Schutz. 2002. Precision orbit determination. GLAS algorithm theoretical basis document. Version 2.2. Austin, TX: Center for Space Research, University of Texas at Austin. Schutz, B. 2002. Laser footprint location (geolocation) and surface profiles.GLAS algorithm theoretical basis document. Version 3.0. Austin, TX: Center for Space Research, University of Texas at Austin. Schutz, B. 2000. GLAS altimeter post-launch calibration/validation plan. Version 0.99. Austin, TX: Center for Space Research, University of Texas at Austin. Stephens, G.L. 1994. Remote sensing of the lower atmosphere: an introduction. New York: Oxford University Press. Wahr, J., D. Wingham, and C. Bentley. 2000. A method of combining ICESat and GRACE satellite data to constrain Antarctic mass balance. Journal of Geophysical Research 105(B7):16,279-16,294. Yi, D., J. Minster, and C. Bentley. 1999. Ocean tidal loading corrections. GLAS algorithm theoretical basis document. Version 1.0. Greenbelt, MD: Goddard Space Flight Center. Zwally, H.J., B. Schutz, D. Hancock, and A. Brenner. 2000. ICESat/GLAS Standard Data Products in HDF and SCF Formats. Version 1.2. Greenbelt, MD: Goddard Space Flight Center.

GLAH09 Level-2 cloud heights for multi-layer clouds contain cloud layer top and bottom height data at sampling rates of 4 sec, 1 sec, 5 Hz, and 40 Hz. Each data granule has an associated browse product.

VIEW PROJECT HOME PAGE http://nsidc.org/data/icesat/ ICESat/GLAS Data at NSIDC VIEW PROJECT HOME PAGE http://icesat.gsfc.nasa.gov/ ICESat/GLAS web site at NASA Goddard Space Flight Center VIEW PROJECT HOME PAGE http://glas.wff.nasa.gov/ ICESat/GLAS web site at NASA Wallops Flight Facility VIEW PROJECT HOME PAGE http://www.csr.utexas.edu/glas/ ICESat/GLAS web site at University of Texas USA/NASA CEOS IDN DIF 9.7 2013-03-04 2013-03-08 Revised data distribution size.