Short Name:

GLAH09

GLAS/ICESat L2 Global Cloud Heights for Multi-layer Clouds (HDF5) V033

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.

Overview Download Data Services Tools Citation Information Documentation Additional Information

Science Keywords:

Spatial Extent:

Bounding Rectangle:

N: 86.0 S: -86.0 E: 180.0 W: -180.0

Data Format(s):

Distribution: HDF

Temporal Extent:

2003-02-20 to 2009-10-11

Platform(s):

ICESat

Data Center(s):

NASA/GSFC/EOS/EO

Instrument(s):

ALTIMETERS, CD, GLAS, GPS, GPS Receiver, LA, PC

Version:

033

Download Options

NSIDC_ECS_ECHO_ORDERS View Service Record
Type: ECHO ORDERS
Description: NSIDC_ECS EOSDIS ECHO ORDERS Service Implementation
NSIDC_ECS_EGI_API_NO_PROCESSING View Service Record
Type: EGI - No Processing
Description: Using this service, data from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) can be accessed directly from our HTTPS file system, or through our Application Programming Interface (API). This API offers you the ability to programmatically order and bulk-download data using temporal and spatial filters without the need to script against NSIDC's data directory structure. This may be valuable if you are interested in incorporating data access commands into your analysis or visualization code.
NSIDC_ECS_DAAC_HTTPS_File_System View Service Record
Type: NOT PROVIDED
Description: Allows users to download select NSIDC Earth Observing System (EOS) DAAC data directly via HTTPS. Products are available from AMSR, AMSR-E, ASO, Aquarius, HMA, IceBridge, ICESat/GLAS, ICESat-2, MEaSUREs, MODIS, NIMBUS, NISE, Passive Microwave, SnowEx, SMAP and VIIRS.
NSIDC_ECS_EGI_API_GLAS View Service Record
Type: ESI
Description: Using this service, select data sets from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) can be accessed and customized through our Application Programming Interface (API). Our API offers users the ability to programmatically request data using temporal and spatial filters as well as applying subsetting, reformatting, and reprojecting. This is valuable when working with big data sets to request just the parameters you need in the format and transformation you want over a specific spatial area or within a specific temporal range. These are the same customization options that are available in Earthdata Search via the Customize data access method for a given data set. The API may also be helpful if you're interested in incorporating data access commands into your analysis or visualization code.

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NSIDC_ECS_GLAS_DATE_CONVERSION View Tool Record
Type: Web User Interface
Description: The ICESat/GLAS Date Conversion Tool includes several options for obtaining information related to laser track start time. To use the tool, use only one of the conversion options at a time. For example, to find time data for Day 236 of Year 2006, use the third option below and fill in the Day of Year and Year fields, and click Convert.
NSIDC_ECS_GLAS_TRACK_CONVERSION View Tool Record
Type: Web User Interface
Description: The ICESat/GLAS Track Conversion Tool provides starting dates and times and related information for a Track for a specified laser period or for all laser periods. Enter the ICESat track number in the Track field, and optionally enter the laser name in the Laser Period field. The default Laser Period is ALL. Click Convert. The resulting Track Conversion Table lists starting dates and time and other related track information.
NSIDC_ECS_HDFView View Tool Record
Type: Downloadable Tool
Description: HDFView is a visual tool for browsing and editing HDF4 and HDF5 files. Using HDFView, you can view a file hierarchy in a tree structure, create new files, add or delete groups and datasets, view and modify the content of a dataset, and add, delete and modify attributes.
NSIDC_ECS_Panoply View Tool Record
Type: Downloadable Tool
Description: Panoply is a desktop application that interactively plots georeferenced and other arrays encoded in the netCDF, HDF and GRIB file formats. With Panoply you can: Slice and plot geo-referenced latitude-longitude, latitude-vertical, longitude-vertical, time-latitude or time-vertical arrays from larger multidimensional variables; slice and plot "generic" 2D arrays from larger multidimensional variables; slice 1D arrays from larger multidimensional variables and create line plots; combine two geo-referenced arrays in one plot by differencing, summing or averaging; plot lon-lat data on a global or regional map using any of over 100 map projections or make a zonal average line plot; overlay continent outlines or masks on lon-lat map plots; use any of numerous color tables for the scale colorbar, or apply your own custom ACT, CPT, or RGB color table.
NSIDC_ECS_Data_Search View Tool Record
Type: Web User Interface
Description: A search interface providing users the ability to search amongst all data sets cataloged by NSIDC.
NSIDC_ECS_DATA_ACCESS_NOTEBOOK View Tool Record
Type: Downloadable Tool
Description: A Jupyter notebook exploring data coverage, size, and customization service availability along with direct data download utilizing the NSIDC DAAC's Data Access and Service API.
NSIDC_ECS_NASA_Earthdata_Search View Tool Record
Type: Web User Interface
Description: NASA Earthdata Search is a map-based interface where users can search for Earth science data, filter results based on spatial and temporal constraints, and when available, order data with customizations including re-formatting, re-projecting, and spatial and parameter subsetting. Thousands of Earth science data sets are accessible from 12 science-oriented Distributed Active Archive Centers (DAACs). The NSIDC DAAC distributes several hundred data sets in NASA Earthdata Search, many with customization options.
NSIDC_ECS_Data_Access_Tool View Tool Record
Type: Web User Interface
Description: Search and filter data files for a given data set using a map-based interface. Data filtering options include filename wildcard, start and end date, and spatial area as bounding box, polygon, or geospatial file import.

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Title: GLAS/ICESat L2 Global Cloud Heights for Multi-layer Clouds (HDF5) V033
Version: 033
Publisher: NASA National Snow and Ice Data Center Distributed Active Archive Center

DOI

10.5067/ICESAT/GLAS/DATA202

GENERAL DOCUMENTATION: https://doi.org/10.5067/ICESAT/GLAS/DATA202, Includes a user's guide, supplemental documents like ATBDs and academic papers, How Tos, FAQs, etc.

Purpose
Scientific Research
Search for granules from this collection

Processing Level

Level 2

Derived geophysical variables

Quality

Collection Progress
Complete

Related URLs

ISO Topic Categories

ELEVATION

Additional Attributes

Name: Cycle INT Description: A count of the number of exact repeats of this reference orbit
Name: identifier_file_uuid STRING Description: Universally unique identifier for this data product's files
Name: Instance INT Description: The number of times that we have returned to a specific reference orbit.
Name: Instrument_State INT Description: Flag word that indicates which redundant units (laser, detector, oscillator) of the GLAS instrument are in operation
Name: Instrument_State_Date DATE Description: The date that corresponds to the first valid Instrument_State. There are a maximum of two per granule
Name: Instrument_State_Time TIME Description: The time that corresponds to the first valid Instrument_State. There are a maximum of two per granule
Name: PercentGroundHit FLOAT Description: Percent of data for this granule that had a detected ground return of the transmitted laser pulse.
Name: ReferenceOrbit INT Description: Assigned number for which exact orbital elements describe the exact repeat orbit pattern.
Name: SP_ICE_GLAS_EndBlock INT Description: Integer number within GLAS coverage scheme in which granule data ends.
Name: SP_ICE_GLAS_StartBlock INT Description: Integer number within GLAS coverage scheme in which granule data starts.
Name: SP_ICE_PATH_NO INT Description: Number which represents the GLAS path number.
Name: Timing_Bias INT Description: The time tag error determined by the calibration team that was added to the time tags to compute the true time of data as provided on the granule.
Name: Timing_Bias_Date DATE Description: The date that corresponds to the first valid Timing_Bias. There are a maximum of two per granule.
Name: Timing_Bias_Time TIME Description: The time that corresponds to the first valid Timing_Bias. There are a maximum of two per granule.
Name: Track INT Description: The unique number assigned for each repeat ground track (one orbit) of the reference orbit
Name: identifier_product_doi STRING Description: Digital object identifier that uniquely identifies this data product
Name: identifier_product_doi_authority STRING Description: URL of the digital object identifier resolving authority

Coverage Type	Zone Identifier	Geometry	Granule Representation
HORIZONTAL		CARTESIAN	ORBIT

Resolution and Coordinate System

Horizontal Data Resolution

Gridded Range Resolutions
- Gridded Range Resolution 1
  X Dimension Minimum
  60 Meters
  X Dimension Maximum
  70 Meters
  Y Dimension Minimum
  60 Meters
  Y Dimension Maximum
  70 Meters

Coverage Type	Swath Width	Period	Inclination Angle	Number of Orbits	Start Circular Latitude	Granule Representation
ORBITAL	2.0 km	96.7 minutes	94.0 degrees	14.0	50.0	ORBIT

Location Keywords

- Geographic Region
- Global

NASA NSIDC DAAC
ARCHIVER
- National Snow and Ice Data Center
  CIRES, 449 UCB
  University of Colorado
  Boulder, CO 80309-0449
1 303 492 6199

Email
Archiving Data Center
https://nsidc.org/daac

Home Page
NASA NSIDC DAAC
DISTRIBUTOR
- National Snow and Ice Data Center
  CIRES, 449 UCB
  University of Colorado
  Boulder, CO 80309-0449
1 303 492 6199

Email
Archiving Data Center
https://nsidc.org/daac

Home Page
NASA/GSFC/EOS/EO
PROCESSOR
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
Originating Data Center
https://earthobservatory.nasa.gov/

Home Page
NASA/GSFC/EOS/EO
ORIGINATOR
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
Originating Data Center
https://earthobservatory.nasa.gov/

Home Page

NSIDC Services
Technical Contact

NSIDC Services
- CIRES, 449 UCB
  University of Colorado
  Boulder, CO 80309-0449
1 303 492 6199

1 303 492 2468

Email
David Hancock
Technical Contact

David Hancock
- ISIPS Manager
  NASA Goddard Space Flight Center
  Wallops Flight Facility
Email
H. Zwally
Technical Contact

H. Zwally
- Laboratory for Hydrospheric Processes
  NASA/Goddard Space Flight Center
  Code 971
  Greenbelt, MD 20771
1 301 614 5643

1 301 614 5644

Email
Robert Schutz
Technical Contact

Robert Schutz
- GLAS Science Team Lead
  University of Texas at Austin
  Center for Space Research
  Austin, TX 78712-1085
This contact does not have any contact mechanisms listed.
John Dimarzio
Technical Contact

John Dimarzio
- SGT, Inc.
  NASA/Goddard Space Flight Center
  Cryospheric Sciences Branch Code 614.1
  Greenbelt, MD 20771
1 301 614 5893

Email
H. Zwally
Technical Contact

H. Zwally
- Laboratory for Hydrospheric Processes
  NASA/Goddard Space Flight Center
  Code 971
  Greenbelt, MD 20771
1 301 614 5643

1 301 614 5644

Email
Robert Schutz
Technical Contact

Robert Schutz
- GLAS Science Team Lead
  University of Texas at Austin
  Center for Space Research
  Austin, TX 78712-1085
This contact does not have any contact mechanisms listed.
David Hancock
Technical Contact

David Hancock
- ISIPS Manager
  NASA Goddard Space Flight Center
  Wallops Flight Facility
Email
John Dimarzio
Technical Contact

John Dimarzio
- SGT, Inc.
  NASA/Goddard Space Flight Center
  Cryospheric Sciences Branch Code 614.1
  Greenbelt, MD 20771
1 301 614 5893

Email
NASA National Snow and Ice Data Center Distributed Active Archive Center
User Services

NASA National Snow and Ice Data Center Distributed Active Archive Center
- Boulder, Colorado
This contact does not have any contact mechanisms listed.

Metadata Dates

Creation	2013-03-04T00:00:00.000Z
Last Revision	2021-05-25T00:00:00.000Z

File Distribution Information

Format: HDF

Format Type: Native

Format Description: FTP 25 GB

There is no direct distribution information for this collection.

GLAS/ICESat L2 Global Cloud Heights for Multi-layer Clouds (HDF5) V033

Collection Information

Data Identification

Related URLs

Other Descriptive Keywords

ISO Topic Categories

Additional Attributes

Acquisition Information

Temporal Information

Spatial Information

Resolution and Coordinate System

Horizontal Data Resolution

Gridded Range Resolutions

Gridded Range Resolution 1

Location Keywords

Data Centers

NASA NSIDC DAAC

NASA NSIDC DAAC

NASA/GSFC/EOS/EO

NASA/GSFC/EOS/EO

Data Contacts

NSIDC Services

NSIDC Services

David Hancock

David Hancock

H. Zwally

H. Zwally

Robert Schutz

Robert Schutz

John Dimarzio

John Dimarzio

H. Zwally

H. Zwally

Robert Schutz

Robert Schutz

David Hancock

David Hancock

John Dimarzio

John Dimarzio

NASA National Snow and Ice Data Center Distributed Active Archive Center

NASA National Snow and Ice Data Center Distributed Active Archive Center

Metadata Dates

Archive And Distribution Information

File Distribution Information