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.

Contacts and Acknowledgments
Detailed Data Description
Data Access and Tools
Data Acquisition and Processing
References and Related Publications
Document Information

Citing These Data

The following example shows how to cite the use of this data set in a publication. For more information, see our Use and Copyright Web page.

Dominguez, Roseanne. 2010. 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
Data Access	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.

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 15 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

Data Access

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

DMS provides natural color or panchromatic tracking 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

.....

Document URL

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

Service Interruption

National Snow and Ice Data Center