Barrow Area Information Database: Landsat-7 Image (Enhanced Thematic Mapper Plus), Barrow Area, Alaska, USA (July 1, 2001)

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: USGS EROS Data Center
Publication_Date: 200308
Title:
Barrow Area Information Database: Landsat-7 Image (Enhanced Thematic Mapper Plus), Barrow Area, Alaska, USA (July 1, 2001)
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: Landsat_ETM
Issue_Identification:
The Landsat-7 satellite's payload includes the ETM+ sensor. The ETM+ sensor is an enhanced version of the TM sensor flown aboard the Landsat-4 and -5 satellites. Sensor enhancements include the addition of the panchromatic band and two gain ranges, improved spatial resolution for the thermal band, and the addition of two solar calibrators.
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: U.S. Geological Survey EROS Data Center
Online_Linkage: <http://ims.arcticscience.org/>
Online_Linkage: <http://data.eol.ucar.edu/codiac/dss/id=106.ARCSS400>
Description:
Abstract:
The launch of the Landsat-7 satellite on April 15, 1999, marks the addition of the latest satellite to the Landsat satellite series. The U.S. entered into a partership with NASA in the early 1970's to assume responsibility for the archive management and distribution of Landsat data products. In July 1972, the National Aeronautics and Space Administration's (NASA) launched the first in a series of satellites designed to provide repetitive global coverage of the Earth's land masses. Part of NASA's Earth Resources Survey Program, the Earth Resources Technology Satellite (ERTS) Program, the ERTS satellites were later renamed Landsat to better represent the civil satellite program's prime emphasis on remote sensing of land resources. Landsats 1, 2, and 3 carried the multispectral scanner (MSS) sensor and experiemntal return beam vidicon cameras. The Landsat-4 satellite carried the MSS and thematic mapper (TM) sensors as does the still currently orbiting Landsat-5 satellite. The Landsat-7 satellite carries the enhanced thematic mapper plus (ETM+) sensor. The launch of the Landsat-7 satellite is part of an ongoing mission to provide quality remote sensing data in support of research and applications activities.
Purpose:
The mission of the Landsat-7 satellite is to provide a vehicle for continuing the flow of global change information to users worldwide. The Landsat-7 satellite fulfills its mission by providing repetitive, synoptic coverage of continental surfaces and by collecting data in spectral bands that include the visible, near-infrared, shortwave, and thermal infrared portions of the electromagnetic spectrum. Landsat-7 mission objectives include:

Maintaining Landsat data continuity by providing data that are consistent in terms of data acquisition, geometry, spatial resolution, calibration, coverage characteristics, and spectral characteristics with previous Landsat data. Generating and periodically refreshing a global archive of substantially cloud-free, Sun-lit, land-mass imagery. Continuing to make remote sensing satellite data available to domestic and international users and expanding the use of such data for global change research in both the Government and private commercial sectors. Promoting interdisciplinary research via synergism with other EOS observations, in particular, orbiting in tandem with the EOS Terra satellite for near coincident observations.

Supplemental_Information:
This metadata record was created from a dataset-level Landsat 7 metadata record available through the USGS EarthExplorer website (<http://earthexplorer.usgs.gov>).

The Landsat-7 system is another step in the development and application of remotely sensed satellite data for use in managing the Earth's land resources. As with earlier Landsat systems, the Landsat-7 platform, along with its enhanced thematic mapping sensor, provides for new capabilities in remote sensing of the Earth's land surface.

Landsat-7 data are collected from a nominal altitude of 705 kilometers in a near-polar, near-circular, Sun-synchronous orbit at an inclination of 98.2 degrees, imaging the same 183-km swath of the Earth's surface every 16 days. Some of the browse images you encounter may appear black or empty. These are engineering data known as FAC=Full Aperture Calibrator. FAC is a white painted panel that is deployed in front of the ETM+ aperture and diffusely reflects solar radiation into the full aperture of the instrument. FAC scenes will typically be gathered on a daily basis and constitute roughly 10 scenes for each FAC collected. So, about 10 of the ~250 scenes per day that Landsat will be delivering to EDC will be FAC scenes. Eventually, this engineering data will be gleaned out of the database.

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20000701
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -159.752329
East_Bounding_Coordinate: -151.042242
North_Bounding_Coordinate: 72.220648
South_Bounding_Coordinate: 69.519070
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD Parameter Keywords
Theme_Keyword: Landsat 7
Theme_Keyword: Earth Science
Theme_Keyword: Radiance
Theme_Keyword: Imagery
Theme_Keyword: Visible Wavelengths
Theme_Keyword: Thematic Mapper
Theme_Keyword: Satellite
Theme_Keyword: Remote Sensing
Theme_Keyword: Radiance
Theme_Keyword: Infrared Wavelengths
Place:
Place_Keyword_Thesaurus: US Geological Survey's Alaska Place Names Dictionary
Place_Keyword: Barrrow
Place_Keyword: North Slope
Place_Keyword: Alaska
Place_Keyword: Arctic
Access_Constraints: Unrestricted.
Use_Constraints:
There are no restrictions as to the use of data sold by the USGS. Landsat_ETM Systematic data are distributed to all customers. Precision and Terrain corrected products are limited to Approved Research Users.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Barrow Arctic Science Consortium
Contact_Person: Allison Graves
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 577
City: Barrow
State_or_Province: AK
Postal_Code: 99723
Country: USA
Contact_Voice_Telephone: 907-852-4881
Contact_Facsimile_Telephone: 907-852-1416
Contact_Electronic_Mail_Address: basc@arcticscience.org
Browse_Graphic:
Browse_Graphic_File_Name:
<http://data.eol.ucar.edu/datafile/nph-get/106.ARCSS400/etmplusfalse07012001.jpg>
Browse_Graphic_File_Description:
browse graphic of Landsat-7 Image (Enhanced Thematic Mapper Plus), Barrow Area, Alaska, USA (July 1, 2002)
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
This data set is being archived as part of the Barrow Area Spatial Data Infrastructure effort. This project is made possible with funding from the National Science Foundation (NSF Award OPP-0004401) and the US Geological Survey (USGS Award Number: 03HQAG0177) to the Barrow Arctic Science Consortium (BASC).
Security_Information:
Security_Classification_System: not applicable.
Security_Classification: Unclassified
Security_Handling_Description: not applicable.
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
A panchromatic band 8 was added, with a resolution of 15 meters. Band 6 now has high gain and low gain bands. There are 3 on-board solar calibrators to provide an absolute accuracy of 5%.
Logical_Consistency_Report:
Landsat-7 data are collected from a nominal altitude of 705 kilometers in a near-polar, near-circular, Sun-synchronous orbit at an inclination of 98.2 degrees, imaging the same 183-km swath of the Earth's surface every 16 days.
Completeness_Report:
The Landsat-7 satellite is designed to fly a 705-kilometer, Sun-synchronous, Earth mapping orbit with a 16-day repeat cycle. Its payload is a single nadir-pointing instrument, the ETM+ sensor. Communications are provided through the satellite's S-band and X-band. The S-band is used for command and housekeeping telemetry operations while the X-Band is used for instrument data downlink. A 378-gigabit solid state recorder can hold 42 minutes of instrument data and 29 hours of housekeeping telemetry, concurrently. Power is provided by a single Sun-tracking solar array and two 50-amp-hour, nickel-hydrogen batteries. Attitude control is provided through four reaction wheels (pitch, yaw, roll, and skew), three 2-channel gyros with celestial drift updating, a static Earth sensor, a 1750A processor, and torque rods and magnetometers for momentum unloading. Orbit control and backup momentum unloading is provided through a blow-down monopropellant hydrazine system with a single tank containing 270 pounds of hydrazine, associated plumbing, and twelve 1-pound-thrust jets. The orbital pattern equates to a 233-orbit cycle with a swath sidelap that varies from approximately 7 percent at the Equator to nearly 84 percent at 81 degrees north or south latitude. The Landsat-7 satellite is to share its orbit configuration with NASA's Earth Observing System (EOS) Terra satellite (launch pending). Plans are for the two satellites to be placed in identical orbits, ideally 15 minutes apart from each other, with the EOS Terra satellite in a follow-on orbit to the Landsat-7 satellite. The end result is repetitive data coverage, while such variables as plant physiology are under nearly identical conditions. The Landsat scenes are mapped to a global notation system called the Worldwide Reference System (WRS), annotating the nominal scene center of Landsat imagery using Path and Row designators.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
This number represents the horizontal distance between the perpendiculars through the LPS calculated ""true"" WRS Scene Center and the nominal (known) WRS scene center on the ground.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The Landsat ETM+ sensor is a nadir-viewing, eight-band multispectral scanning radiometer that detects spectrally filtered radiation from several portions of the electromagnetic spectrum while orbiting the Earth from an altitude of 705 kilometers. Nominal ground sample distances or pixel sizes include 30 meters each for the six visible, near-infrared, and shortwave infrared bands, 60 meters for the thermal infrared band, and 15 meters for the panchromatic band. The ETM+ sensor is designed to produce approximately 3.8 gigabits of data for each Landsat scene. The Landsat ETM+ sensor operates from a 3-axis, stabilized satellite platform. With the platform traveling in a Energy reflected from the Earth's surface passes through several ETM+ subsystems before being collected by the solid-state detectors at the focal plane.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: USGS EROS Data Center
Publication_Date: 20010701
Title: Landsat Imagery
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage: <http://edcwww.cr.usgs.gov/eros-home.html>
Type_of_Source_Media: FTP server
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20010701
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: USGS
Source_Contribution: Provided Landsat imagery for download at no cost.
Process_Step:
Process_Description:
This product was produced by the U.S. Geological Survey (USGS) and contains Landsat data files in GeoTIFF (Geographic Tagged Image-File Format). The image was downloaded from the internet.
Process_Date: 20030801
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: David Zaks
Contact_Organization: Michigan State University
Contact_Position: Intern
Contact_Address:
Address_Type: mailing and physical address
Address: 100 North Kedzie Hall, Michigan State University
City: East Lansing
State_or_Province: MI
Postal_Code: 48823
Country: USA
Contact_Voice_Telephone: 517-355-1284
Contact_Facsimile_Telephone: 517-432-2150
Contact_Electronic_Mail_Address: nunatech@usa.net

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 9522
Column_Count: 9951
Vertical_Count: 1

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 4
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -159.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 30.000000
Ordinate_Resolution: 30.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: National Center for Atmospheric Research: Earth Observing Labratory
Contact_Position: Codiac Support
Contact_Address:
Address_Type: mailing address
Address:P.O. Box 3000
City: Boulder
State_or_Province: CO
Postal_Code: 80307-3000
Country: USA
Contact_Voice_Telephone:
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: codiac@ucar.edu
Hours_of_Service: business hours
Resource_Description: Downloadable Data
Distribution_Liability:
The National Center for Atmospheric Research (NCAR) shall not be held liable for improper or incorrect use of the data described and/or contained herein. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. Any related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. NCAR gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. These data and related graphics are not legal documents and are not intended to be used as such. This disclaimer applies both to individual use of the data and aggregate use with other data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIFF
Format_Version_Number: ERDAS 8.5 GeoTiff
Format_Specification: Winzip
Format_Information_Content: satellite image
File_Decompression_Technique:
Decompress using software capable of extracting a tar/gzip (.tgz) file (for example, WinZip or Pkzip on Windows operating systems).
Transfer_Size: 271.102
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://data.eol.ucar.edu/datafile/nph-get/106.ARCSS400/etmplusfalse07012001.zip>
Fees: no fees

Metadata_Reference_Information:
Metadata_Date: 20040916
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NCAR/EOL
Contact_Position: Codiac Support
Contact_Address:
Address_Type: mailing address
Address: P.O. Box 3000
City: Boulder
State_or_Province: CO
Postal_Code: 80307-3000
Country: USA
Contact_Voice_Telephone:
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: codiac@ucar.edu
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.8.11 on Thu Jun 30 14:10:04 2005