Identification_Information: Citation: Citation_Information: Originator: Seirup, L., G. Yetman, and L. Razafindrazay Publication_Date: 2012 Title: U.S. Census Grids (Summary File 3), 1990 Edition: 1.00 Geospatial_Data_Presentation_Form: raster Publication_Information: Publication_Place: Palisades, NY Publisher: NASA Socioeconomic Data and Applications Center (SEDAC) Online_Linkage: http://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file3-1990 Description: Abstract: U.S. Census Grids (Summary File 3), 1990 contain grids of demographic and socioeconomic data from the year 1990 U.S. census in ASCII and geotiff formats. The grids have a resolution of 30 arc-seconds (0.0083 decimal degrees), or approximately 1 square km. The gridded variables are based on census block geography from Census 1990 TIGER/Line Files and census variables (population, households, and housing variables). This data set is produced by the Columbia University Center for International Earth Science Information Network (CIESIN). Purpose: To provide gridded demographic data, including characteristics of income, education, and housing, for the United States for data integration. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19900401 Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -180.000000 East_Bounding_Coordinate: -65.000000 North_Bounding_Coordinate: 72.000000 South_Bounding_Coordinate: 17.000000 Keywords: Theme: Theme_Keyword_Thesaurus: CIESIN Indexing Vocabulary Version 2.1 (GCMD Format) Theme_Keyword: CIESIN > Economic Activity > Income Theme_Keyword: CIESIN > Human Attitudes, Preferences, and Behavior > Consumer Behavior > Poverty Theme_Keyword: CIESIN > Human Attitudes, Preferences, and Behavior > Education Theme_Keyword: CIESIN > Population Dynamics > Demographic Characteristics > Place of Residence Theme_Keyword: CIESIN > Population Dynamics > Demographic Characteristics > Population Distribution Theme_Keyword: CIESIN > Population Dynamics > Demographic Characteristics > Population Size Theme: Theme_Keyword_Thesaurus: GCMD Parameter Valids Theme_Keyword: EARTH SCIENCE > Human Dimensions > Population > Population Distribution Theme_Keyword: EARTH SCIENCE > Human Dimensions > Population > Population Size Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: Census Block Theme_Keyword: Households Theme_Keyword: Housing Theme_Keyword: Housing Age Theme_Keyword: Immigration Theme_Keyword: U.S. Census Theme: Theme_Keyword_Thesaurus: EI Gateway Vocabulary Theme_Keyword: Population Theme: Theme_Keyword_Thesaurus: SEDAC Topic Theme_Keyword: Population Theme: Theme_Keyword_Thesaurus: Data Granularity Theme_Keyword: Country Theme: Theme_Keyword_Thesaurus: CSA-NBII Biocomplexity Theme_Keyword: Education Theme_Keyword: Households Theme_Keyword: Housing Theme_Keyword: Human Population Density Theme_Keyword: Immigration Theme_Keyword: Income Theme_Keyword: Population Characteristics Theme_Keyword: Population Distribution Theme_Keyword: Poverty Theme: Theme_Keyword_Thesaurus: ISO Topic Theme_Keyword: Boundaries Theme_Keyword: Society Place: Place_Keyword_Thesaurus: CIESIN Location Terms, version 2.0 Place_Keyword: Region > Equatorial Place_Keyword: Region > Mid-Latitude Place_Keyword: Continent > North America Place_Keyword: Region > Polar Place_Keyword: Country > United States Place: Place_Keyword_Thesaurus: U.S. States and Territories Place_Keyword: Alabama Place_Keyword: Alaska Place_Keyword: Arizona Place_Keyword: Arkansas Place_Keyword: California Place_Keyword: Colorado Place_Keyword: Connecticut Place_Keyword: Delaware Place_Keyword: District of Columbia Place_Keyword: Florida Place_Keyword: Georgia Place_Keyword: Hawaii Place_Keyword: Idaho Place_Keyword: Illinois Place_Keyword: Indiana Place_Keyword: Iowa Place_Keyword: Kansas Place_Keyword: Kentucky Place_Keyword: Louisiana Place_Keyword: Maine Place_Keyword: Maryland Place_Keyword: Massachusetts Place_Keyword: Michigan Place_Keyword: Minnesota Place_Keyword: Mississippi Place_Keyword: Missouri Place_Keyword: Montana Place_Keyword: Nebraska Place_Keyword: Nevada Place_Keyword: New Hampshire Place_Keyword: New Jersey Place_Keyword: New Mexico Place_Keyword: New York Place_Keyword: North Carolina Place_Keyword: North Dakota Place_Keyword: Ohio Place_Keyword: Oklahoma Place_Keyword: Oregon Place_Keyword: Pennsylvania Place_Keyword: Rhode Island Place_Keyword: South Carolina Place_Keyword: South Dakota Place_Keyword: Tennessee Place_Keyword: Texas Place_Keyword: Utah Place_Keyword: Vermont Place_Keyword: Virginia Place_Keyword: Washington Place_Keyword: West Virginia Place_Keyword: Wisconsin Place_Keyword: Wyoming Access_Constraints: None Use_Constraints: Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NASA Socioeconomic Data and Applications Center (SEDAC) Contact_Address: Address_Type: mailing and physical address Address: CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000 City: Palisades State_or_Province: NY Postal_Code: 10964 Country: USA Contact_Voice_Telephone: +1 845-365-8920 Contact_Facsimile_Telephone: +1 845-365-8922 Contact_Electronic_Mail_Address: ciesin.info@ciesin.columbia.edu Cross_Reference: Citation_Information: Originator: Seirup, L., and G. Yetman Publication_Date: 20060531 Title: U.S. Census Grids (Summary File 1), 2000 Edition: 1.00 Geospatial_Data_Presentation_Form: raster, map Publication_Information: Publication_Place: Palisades, NY Publisher: NASA Socioeconomic Data and Applications Center (SEDAC) Online_Linkage: http://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file1-2000 Cross_Reference: Citation_Information: Originator: Seirup, L., and G. Yetman Publication_Date: 20060531 Title: U.S. Census Grids (Summary File 1), 2000: Metropolitan Statistical Areas Edition: 1.00 Geospatial_Data_Presentation_Form: raster, map Publication_Information: Publication_Place: Palisades, NY Publisher: NASA Socioeconomic Data and Applications Center (SEDAC) Online_Linkage: http://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file1-2000-msa Cross_Reference: Citation_Information: Originator: Seirup, L., and G. Yetman Publication_Date: 20060531 Title: U.S. Census Grids (Summary File 3), 2000: Metropolitan Statistical Areas Edition: 1.00 Geospatial_Data_Presentation_Form: raster, map Publication_Information: Publication_Place: Palisades, NY Publisher: NASA Socioeconomic Data and Applications Center (SEDAC) Online_Linkage: http://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file3-2000-msa Cross_Reference: Citation_Information: Originator: Seirup, L., and G. Yetman Publication_Date: 20060531 Title: U.S. Census Grids (Summary File 3), 2000 Edition: 1.00 Geospatial_Data_Presentation_Form: raster, map Publication_Information: Publication_Place: Palisades, NY Publisher: NASA Socioeconomic Data and Applications Center (SEDAC) Online_Linkage: http://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file3-2000 Cross_Reference: Citation_Information: Originator: Seirup, L., G. Yetman, and L. Razafindrazay Publication_Date: 2012 Title: U.S. Census Grids (Summary File 1), 1990 Edition: 1.00 Geospatial_Data_Presentation_Form: raster Publication_Information: Publication_Place: Palisades, NY Publisher: NASA Socioeconomic Data and Applications Center (SEDAC) Online_Linkage: http://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file1-1990 Cross_Reference: Citation_Information: Originator: Seirup, L., G. Yetman, and L. Razafindrazay Publication_Date: 2012 Title: U.S. Census Grids (Summary File 1), 1990: Metropolitan Statistical Areas Edition: 1.00 Geospatial_Data_Presentation_Form: raster Publication_Information: Publication_Place: Palisades, NY Publisher: NASA Socioeconomic Data and Applications Center (SEDAC) Online_Linkage: http://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file1-1990-msa Cross_Reference: Citation_Information: Originator: Seirup, L., G. Yetman, and L. Razafindrazay Publication_Date: 2012 Title: U.S. Census Grids (Summary File 3), 1990: Metropolitan Statistical Areas Edition: 1.00 Geospatial_Data_Presentation_Form: raster Publication_Information: Publication_Place: Palisades, NY Publisher: NASA Socioeconomic Data and Applications Center (SEDAC) Online_Linkage: http://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file3-1990-msa Data_Quality_Information: Lineage: Process_Step: Process_Description: 1. The 1990 SF3 files for each state are loaded into Microsoft Access and queries are used to extract the records pertaining to census blocks and the fields being used for gridding.
2. The SF3 fields are combined as specified in the variable documentation to create the variables being gridded. 3. For all states, except Hawaii, the 1990 TIGER/Line files are converted to ArcInfo coverages using the ArcInfo command TIGERTOOL. For Hawaii, a census block shapefile is downloaded from the Hawaii Statewide GIS Program web site at http://www.hawaii.gov/dbedt/gis/download.htm and converted to an ArcInfo coverage. The Hawaii state shapefile is used because the U.S. Census tiger data for Hawaii does not use the NAD 83 datum and the Census Bureau does not specify what regional datum is used for Hawaii. The Hawaii state shapefile has been converted to NAD 83. 4. The SF3 block group data are proportionately allocated to census blocks using an appropriate variable from the Summary File 1 data. For instance, the residents in the block group with a high school degree are allocated to the block using the population age 25 and older from SF1 data. 5. The SF3 counts assigned to each census block are joined to the tiger coverages. The density of each variable is calculated for each census block. 6. A 30 arc-second fishnet is created and unioned with the census block coverage. 7. The area in square kilometers is calculated for each area of intersection. The total count for each variable is calculated by multiplying the area in square kilometers in each area of intersection by the density of that variable in the underlying census block. 8. The total count for each grid cell is calculated by aggregating the variable counts for each area of intersection that falls within that grid cell. 9. The fishnet grid for each variable is converted to raster format. Spatial_Data_Organization_Information: Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.008300 Longitude_Resolution: 0.008300 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257000 Entity_and_Attribute_Information: Detailed_Description: Attribute: Attribute_Label: ahhi Attribute_Definition: Aggregate household income in 1989. U.S. Census 1990, summary file 3, table P81, sum of fields P0810001, P0810002 Attribute: Attribute_Label: ba Attribute_Definition: Maximum level of educational attainment: Bachelor’s degree or greater. U.S. Census 1990, summary file 3, table P57, sum of fields P0570006, P0570007 Attribute: Attribute_Label: fb Attribute_Definition: Foreign born population. U.S. Census 1990, summary file 3, table P42, field P0420009 Attribute: Attribute_Label: ha1 Attribute_Definition: Housing units: Built 1980 to March 1990. U.S. Census 1990, summary file 3, table P25, sum of fields H0250001, H0250002, and H0250003 Attribute: Attribute_Label: ha2 Attribute_Definition: Housing units: Built 1960 to 1979. U.S. Census 1990, summary file 3, table P25, sum of fields H0250004 Attribute: Attribute_Label: ha3 Attribute_Definition: Housing units: Built 1940 to 1959. U.S. Census 1990, summary file 3, table P25, sum of fields H0250005 and H0250006 Attribute: Attribute_Label: ha4 Attribute_Definition: Housing units: Built before 1940. U.S. Census 1990, summary file 3, table P25, sum of fields H0250007 and H0250008 Attribute: Attribute_Label: hh3 Attribute_Definition: Households. U.S. Census 1990, summary file 3, table P5, field P0050001 Attribute: Attribute_Label: hs Attribute_Definition: Maximum level of educational attainment: High school degree or greater. U.S. Census 1990, summary file 3, table P57, sum of fields P0570003, P0570004, P0570005, P0570006, P0570007 Attribute: Attribute_Label: hu3 Attribute_Definition: Housing units. U.S. Census 1990, summary file 3, table H1, field H0010001 Attribute: Attribute_Label: hunv Attribute_Definition: Occupied housing units with no vehicle available. U.S. Census 1990, summary file 3, table H37, sum of fields H0370001 and H0370007 Attribute: Attribute_Label: liso Attribute_Definition: Linguistic isolation: Households in which no one, age 14 or older, speaks English very well. U.S. Census 1990, summary file 3, table P29, sum of fields P0290002, P0290004, and P0290006 Attribute: Attribute_Label: lowi Attribute_Definition: Population for whom the ratio of income in 1989 to the poverty level was under 2.0. U.S. Census 1990, summary file 3, table P121, sum of fields P1210001, P1210002, P1210003, P1210004, P1210005, P1210006, P1210007, P1210008 Attribute: Attribute_Label: occ3 Attribute_Definition: Occupied housing units. U.S. Census 1990, summary file 3, table H4, field H0040001 Attribute: Attribute_Label: p25 Attribute_Definition: Population 25 years and over. U.S. Census 1990, summary file 3, table P57, sum of fields P0570001, P0570002, P0570003, P0570004, P0570005, P0570006, P0570007 Attribute: Attribute_Label: pop3 Attribute_Definition: Population. U.S. Census 1990, summary file 3, table P1, field P0010001 Attribute: Attribute_Label: pov Attribute_Definition: Population for whom the ratio of income in 1989 to the poverty level was under 1.0. U.S. Census 1990, summary file 3, table P121, sum of fields P1210001, P1210002, P1210003 Attribute: Attribute_Label: pvp Attribute_Definition: Population for whom poverty status is determined. U.S. Census 1990, summary file 3, table P121, field P1210001, P1210002, P1210003, P1210004, P1210005, P1210006, P1210007, P1210008, P1210009 Attribute: Attribute_Label: sevp Attribute_Definition: Population for whom the ratio of income in 1989 to the poverty level was under 0.50. U.S. Census 1990, summary file 3, table P121, field P1210001 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: NASA Socioeconomic Data and Applications Center (SEDAC) Contact_Address: Address_Type: mailing and physical address Address: CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000 City: Palisades State_or_Province: NY Postal_Code: 10964 Country: USA Contact_Voice_Telephone: +1 845-365-8920 Contact_Facsimile_Telephone: +1 845-365-8922 Contact_Electronic_Mail_Address: ciesin.info@ciesin.columbia.edu Resource_Description: CIESIN_SEDAC_USCG_90SF3 Distribution_Liability: CIESIN follows procedures designed to ensure that data disseminated by CIESIN are of reasonable quality. If, despite these procedures, users encounter apparent errors or misstatements in the data, they should contact SEDAC User Services at +1 845-365-8920 or via email at ciesin.info@ciesin.columbia.edu. Neither CIESIN nor NASA verifies or guarantees the accuracy, reliability, or completeness of any data provided. CIESIN provides this data without warranty of any kind whatsoever, either expressed or implied. CIESIN shall not be liable for incidental, consequential, or special damages arising out of the use of any data provided by CIESIN. Standard_Order_Process: Ordering_Instructions: The data in American Standard Code for Information Interchange (ASCII) and Geographic Tagged Image File Format (GeoTIFF) formatare available from the NASA Socioeconomic Data and Applications Center (SEDAC). Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: GeoTIFF, ASCII File_Decompression_Technique: Unzip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file3-1990/data-download Access_Instructions: Data accessible via direct download. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2012 Metadata_Reference_Information: Metadata_Date: 20120313 Metadata_Review_Date: 20130724 Metadata_Future_Review_Date: 20140724 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Center for International Earth Science Information Network (CIESIN) Metadata Administration Contact_Address: Address_Type: mailing and physical address Address: CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000 City: Palisades State_or_Province: NY Postal_Code: 10964 Country: USA Contact_Voice_Telephone: +1 845-365-8988 Contact_Facsimile_Telephone: +1 845-365-8922 Contact_Electronic_Mail_Address: metadata@ciesin.columbia.edu Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time