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IceBridge DMS L0 Raw Imagery

This data set contains level zero imagery taken from the Digital Mapping System (DMS) over Antarctica and Greenland. The data were collected as part of Operation IceBridge funded aircraft survey campaigns.

Operation IceBridge products may include test flight data that are not useful for research and scientific analysis. Test flights usually occur at the beginning of campaigns. Users should read flight reports for the flights that collected any of the data they intend to use. Check IceBridge campaign Flight Reports for dates and information about test flights.

Table of Contents

  1. Contacts and Acknowledgments
  2. Detailed Data Description
  3. Data Access and Tools
  4. Data Acquisition and Processing
  5. References and Related Publications
  6. Document Information

Citing These Data

We kindly request that you cite the use of this data set in a publication using the following citation example. For more information, see our Use and Copyright Web page.

Dominguez, Roseanne. 2010, updated 2014. IceBridge DMS L0 Raw Imagery, [indicate subset used]. Boulder, Colorado USA: NASA DAAC at the National Snow and Ice Data Center. http://nsidc.org/data/iodms0.html.

Overview

Platform

NASA DC-8, NASA P-3B

Sensor

DMS

Spatial Coverage

Antarctica, Greenland, and Arctic and Antarctic sea ice

Spatial Resolution

Nominal 10 cm at 1500 feet AGL

Temporal Coverage

16 October 2009 to the present

Temporal Resolution

Seasonal

Parameters

Imagery

Data Format

Joint Photographic Experts Group (JPEG)

Metadata Access

View Metadata Record

Get Data

FTP

1. Contacts and Acknowledgments

Investigator(s) Name and Title

Roseanne Dominguez
Airborne Sensor Facility
NASA Ames Research Center
MS 244-15
Moffett Field, CA 94035-1000 USA

Technical Contact

NSIDC User Services
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449  USA
phone: +1 303.492.6199
fax: +1 303.492.2468
form: Contact NSIDC User Services
e-mail: nsidc@nsidc.org

Acknowledgements

DMS is supported by the NASA Airborne Science Program. Data collection and exceptional image quality is the result of the phenomenal efforts of our field team: Robert Billings, Kent Dunwoody, Eric Fraim, Dennis Gearhart and James Jacobson. Software integration and development was provided by Dr. Haiping Su (UCSC).

2. Detailed Data Description

Format

The data files are JPEG image format.

File and Directory Structure

Data files are organized on the FTP site, ftp://n4ftl01u.ecs.nasa.gov/SAN2/ICEBRIDGE_FTP/, as described in Figure 1.

directory structure

Figure 1. Directory Structure

File Naming Convention

Files are named using the conventions shown below. File name variables are described in Table 1:

2012_03_06_00007.JPG
YYYY_MM_DD_nnnnn.JPG

Where:

Table 1. File Naming Convention
Variable Description
YYYY Four-digit year
MM Two-digit month
DD Two-digit day
fffff Frame number (some frame numbers are 4 digits)
.JPG Indicates JPEG image file

File Size

Files range from approxmiately 1 MB to 17 MB.

Volume

The entire data set is approximately 18 TB.

Spatial Coverage

Spatial coverage for the IceBridge DMS campaigns includes Antarctica, Greenland, and Arctic and Antarctic sea ice.

Arctic / Greenland:
Southernmost Latitude 60° N
Northernmost Latitude: 90° N
Westernmost Longitude: 180° W
Easternmost Longitude: 180° E

Antarctic:
Southernmost Latitude: 90° S
Northernmost Latitude: 53° S
Westernmost Longitude: 180° W
Easternmost Longitude: 180° E

Spatial Resolution

Pixel size is dependent on flight altitude and referenced DEM. Spatial resolution is 10 cm for images acquired at 1500 ft AGL.

Temporal Coverage

These data were collected as part of Operation IceBridge funded campaigns beginning 16 October 2009 to the present.

Temporal Resolution

IceBridge campaigns are conducted on an annual repeating basis. Arctic and Greenland campaigns are conducted during March, April, and May, and Antarctic campaigns are conducted during October and November.

Parameter or Variable

Parameter Description

The DMS Level-0 files contain 3-banded imagery.

3. Data Access and Tools

Get Data

Data are available via FTP.

Software and Tools

The image files can be opened using any software capable of displaying JPEG files.

4. Data Acquisition and Processing

Data Acquisition Methods

DMS is a visible imaging system, capturing data throughout flight. Level-0 products for raw DMS include raw JPEG files. Most imagery were acquired in panchromatic mode, but all provided output is 3-banded imagery.

Sensor or Instrument Description

The DMS airborne digital camera acquires high resolution natural color and panchromatic imagery from low and medium altitude research aircraft. The system configuration includes a 21 megapixel Canon EOS 5D Mark II digital camera, computer-controlled intervalometer, and an Applanix POS/AV precision orientation system. In-flight operators maximize image quality with adjustments to exposure and intervalometer settings.

5. References and Related Publications

Farr, T. G., et al. 2007. The Shuttle Radar Topography Mission, Rev. Geophys., 45:RG2004, doi:10.1029/2005RG000183.

Related Data Collections

Related Web Sites

  • NASA Digital Mapping System Web page (http://asapdata.arc.nasa.gov/dms/).
  • IceBridge Data Web site at NSIDC (http://nsidc.org/data/icebridge/index.html).
  • IceBridge Web site at NASA (http://www.nasa.gov/mission_pages/icebridge/index.html).
  • ICESat/GLAS Web site at NASA Wallops Flight Facility (http://glas.wff.nasa.gov/).
  • ICESat/GLAS Web site at NSIDC (http://nsidc.org/daac/projects/lidar/glas.html).

6. Document Information

Acronyms and Abbreviations

The acronyms used in this document are listed in Table 2.

Table 2. Acronyms and Abbreviations
Acronym Description
AGL Above Ground Level
CIRES Cooperative Institute for Research in Environmental Science
DEM Digital Elevation Model
DMS Digital Mapping System
FTP File Transfer Protocol
GPS Global Positioning System
JPEG or JPG Joint Photographic Experts Group file format
L0 Processing Level-0
NASA National Aeronautics and Space Administration
NSIDC National Snow and Ice Data Center
POS/AV Position and Orientation System / Airborne Vehicle
URL Uniform Resource Locator

Document Creation Date

16 April 2013

Document Revision Date

19 August 2013

01 April 2014

Document URL

http://nsidc.org/data/docs/daac/icebridge/iodms0/index.html