[Keyword='COUNTY']

Conterminous U.S. AVHRR Bi-Weekly Composites

Federal Geographic Data Committee (FGDC) Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1989
Title: Conterminous U.S. AVHRR Bi-Weekly Composites
Edition:
Geospatial_Data_Presentation_Form: Remote Sensing Image
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Sioux Falls, South Dakota, USA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Online_Linkage:
Description:
Abstract:
The goal of the Conterminous U.S. AVHRR project is to compile a comprehensive time series data set of calibrated, georegistered daily observations and biweekly maximum normalized difference vegetation index (NDVI) composites for each annual growing season. This data set has applications for environmental monitoring and for assessing impacts of global climate change. The Conterminous U.S. AVHRR Data Set is comprised of biweekly maximum NDVI composites, which were created from daily satellite observations. The NDVI composites include 10 bands of information, including AVHRR channels 1-5, maximum NDVI, satellite zenith, solar zenith, and relative azimuth. The daily observations, bands 1-9, have been calibrated to reflectance, scaled to byte data, and geometrically registered to the Lambert Azimuthal Equal Area map projection. The 10th band is a pointer to identify the date and scene ID of the source daily observation (scene) for each pixel. The compositing process required each daily overpass to be registered to a common map projection with precise registration to ensure that from day to day each 1-km pixel represented the exact same ground location. The Lambert Azimuthal Equal Area map projection provides for equal area characteristics, which enables easy measurement of area throughout the data. Each daily observation for the growing season was registered to the base image using image-to-image correlation. The NDVI was calculated from calibrated data, which had been scaled to byte range and geometrically registered. The NDVI is the difference between near-infrared (AVHRR Channel 2) and visible (AVHRR Channel 1) reflectance values divided by total reflectance. The method for determining the portion of each overpass to be included in the composite image was to retain pixels having the highest NDVI values. The NDVI was examined pixel by pixel for each overpass within the biweekly compositing period to determine the maximum value. The output of the compositing process is a 10-band image as described above. Often when displaying data covering large areas, such as AVHRR data, it is beneficial to include an overlay of familiar linework as a location aid or a mask or strata to derive statistical data for regions. All of the linework images represent lines in raster format as 1-km cells, and the strata are represented as polygons registered to the AVHRR data. The linework and raster polygon data sets included are the climatic division boundaries, major land resource area boundaries, and county boundaries.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Ailts, B.L., Akkerman, D.B., Quirk, B.K., and Steinwand, D.R., 1990, LAS 5.0--an image processing system for research and production environments, in American Society of Photogrammetry and Remote Sensing American Congress of Surveying and Mapping Annual Convention, Denver, Colorado, Proceedings: v.4, p. 1-12.
Supplemental_Information:
REFERENCE: Holben, B.N., 1986, Characteristics of maximum-value composite images from temporal AVHRR data: The International Journal of Remote Sensing, v.7, no.11, p. 1,417.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19890104
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -125.0
East_Bounding_Coordinate: -56.0
North_Bounding_Coordinate: 50.0
South_Bounding_Coordinate: 23.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION COVER > NDVI
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > LAND COVER
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > LAND RESOURCES
Theme_Keyword: EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED IMAGERY
Theme_Keyword: EARTH SCIENCE > SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE IMAGERY
Theme_Keyword: NOAA-10 > NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION-10
Theme_Keyword: NOAA-11 > NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION-11
Theme_Keyword: NOAA-12 > NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION-12
Theme_Keyword: NOAA-14 > NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION-14
Theme_Keyword: NOAA-15 > NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION-15
Theme_Keyword: NOAA-16 > NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION-16
Theme_Keyword: NOAA-17 > NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION-17
Theme_Keyword: NOAA-18 > NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION-18
Theme_Keyword: NOAA-19 > NATIONAL OCEANIC & ATMOSPHERIC ADMINISTRATION-19
Theme_Keyword: AVHRR > ADVANCED VERY HIGH RESOLUTION RADIOMETER
Theme_Keyword: Avhrr
Theme_Keyword: Climatic Division
Theme_Keyword: Composite
Theme_Keyword: County
Theme_Keyword: Usgs/eros
Theme_Keyword: Fips
Theme_Keyword: Hrpt
Theme_Keyword: Imagery
Theme_Keyword: Lac
Theme_Keyword: Land Resource Area
Theme_Keyword: Las
Theme_Keyword: Ndvi
Theme_Keyword: Radiance
Theme_Keyword: Raster
Theme_Keyword: Satellite
Theme_Keyword: Usgs
Theme_Keyword: BIOTA
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: IMAGERY/BASE MAPS/EARTH COVER
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
Place_Keyword: CONTINENT > NORTH AMERICA
Access_Constraints: None
Use_Constraints:
There is no guarantee of warranty concerning the accuracy of these data. Users should be aware that temporal changes may have occurred since the data was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of their limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data set is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data set, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: EROS CENTER
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: LTA Customer Services
Address: U.S. Geological Survey
Address: EROS Center
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198-0001
Country: USA
Contact_Voice_Telephone: 605-594-6151
Contact_Voice_Telephone: 800-252-4547
Contact_Facsimile_Telephone: 605-594-6589
Contact_Electronic_Mail_Address: lta@usgs.gov
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: DOI/USGS/EROS > Earth Resources Observation and Science Center, U.S. Geological Survey, U.S. Department of the Interior
Contact_Person: EROS CENTER
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: LTA Customer Services
Address: U.S. Geological Survey
Address: EROS Center
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198-0001
Country: USA
Contact_Voice_Telephone: 605-594-6151
Contact_Voice_Telephone: 800-252-4547
Contact_Facsimile_Telephone: 605-594-6589
Contact_Electronic_Mail_Address: lta@usgs.gov
Resource_Description: USAVHRR
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://eros.usgs.gov/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://earthexplorer.usgs.gov/
Access_Instructions:
Query and order satellite images, aerial photographs, and cartographic products through the U.S. Geological Survey. Log in as a guest or as a registered user. Registered users have access to more features than guests do. If you plan on using EarthExplorer frequently, you may wish to register. Please note that this site uses Session Cookies and Java applets.
Fees: None
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Metadata_Reference_Information:
Metadata_Date:
Metadata_Review_Date: 20130514
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: LONG TERM ARCHIVE
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Information Systems Management
Address: U.S. Geological Survey
Address: EROS Center
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198-0001
Country: USA
Contact_Voice_Telephone: 605-594-6594
Contact_Facsimile_Telephone: 605-594-6589
Contact_Electronic_Mail_Address: lta@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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