| Section 1 | Overview | |||
| Originator | U.S. Department of Agriculture (USDA), Farm Service Agency (FSA), Aerial Photography Field Office (APFO) | |||
| Title | Index of Acquisition Dates for NAIP Digital Orthorectified Images (DOQ), Minnesota, 2017 | |||
| Abstract | This data set contains polygons delineating the seamline boundaries of imagery acquired as part of the National Agriculture Imagery Program (NAIP), and used in the creation of DOQQs and compressed county mosaics (CCM). These seam polygons can be used as a tool in determining the image source and date of each portion of the DOQQ or the CCM.
The NAIP acquires 4 band digital ortho imagery from airborne and/or space based platforms during the agricultural growing seasons in the U.S.. A primary goal of the NAIP program is to enable availability of ortho imagery within sixty days of acquisition. The NAIP provides 1 meter or 60cm GSD ortho imagery rectified within +/- 4 meters to true ground at a 95% confidence level. The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 (plus or minus 30) pixel buffer on all four sides. The NAIP quarter quads are formatted to the UTM coordinate system using the North American Datum of 1983 (NAD83). (Note: The Minnesota Geospatial Information Office (MnGeo) has created this metadata record to describe the entire NAIP 2017 seamline shapefile dataset, using information from Farm Service Agency metadata. Each seamline shapefile is accompanied by the original FSA metadata for that county.) | |||
| Purpose | This index aids USDA Agencies in identifying source acquisition date boundaries for the compressed county mosaic as they administer USDA programs for their customers. | |||
| Time Period of Content Date | 2017 | |||
| Currentness Reference | ||||
| Progress | Complete | |||
| Maintenance and Update Frequency | Irregular | |||
| Spatial Extent of Data | Minnesota | |||
| Bounding Coordinates | -95.1 -94.3 44.5 44 | |||
| Place Keywords | Minnesota, MN | |||
| Theme Keywords | imageryBaseMapsEarthCover, Digital Orthorectified Image, Digital Orthophoto Quad, Ortho, Orthophoto, DOQ, NAIP, Compliance, Air Photo, Air Photography, Aerial Photo, Aerial Photography | |||
| Theme Keyword Thesaurus | ISO 19115 Topic Category | |||
| Access Constraints | None | |||
| Use Constraints | The Aerial Photography Field Office asks to be credited in derived products.
Redistribution conditions: In obtaining this data from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you modify it, you are encouraged to apply responsible best practices by documenting those changes in a metadata record. If you transmit or provide the data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit. | |||
| Contact Person Information | ,
USDA-FSA-APFO Aerial Photography Field Office 2222 West 2300 South Salt Lake City, UT 84119 Phone: 801-844-2922 Fax: 801-956-3653 Email: apfo.sales@slc.usda.gov | |||
| Browse Graphic | None available | |||
| Associated Data Sets | For information on Minnesota NAIP 2017 air photos, including options for viewing and downloading the imagery, see https://www.mngeo.state.mn.us/chouse/airphoto/naip17.html
For information on other air photos available for Minnesota, including other years of NAIP imagery, see https://www.mngeo.state.mn.us/chouse/airphoto/index.html | |||
| Section 2 | Data Quality | |||
| Attribute Accuracy | All data have been reviewed for correct application of attributes and are accurate to current conditions. | |||
| Logical Consistency | USDA-FSA Aerial Photography Field Office relies on the integrity of the original data collection which was performed by private contractors. Data integrity was validated by the responsible private contractor or sub-contractor. Polygon and chain-node topology present. There are no duplicate arcs and no dangling nodes. The data set contains polygons that do not overlap, there are no polygons that are entered twice, and all areas are completely described. The area features are topologically structured with nodes at all intersections. The dataset is comprised of polygons delineating portions of each exposure used as source data for each part of the NAIP imagery, with no gaps in coverage. Attribution includes acquisition dates and times. | |||
| Completeness | To the best knowledge of the USDA-FSA Aerial Photography Field Office this digital data set is complete with no required elements left unrepresented according to contract specifications. | |||
| Horizontal Positional Accuracy | None | |||
| Vertical Positional Accuracy | N/A | |||
| Lineage | This Esri shape file was created using custom-developed software and the freeware 'shapelib' library. The polygons indicate the mosaick seamline extents of each photograph that intersects this CCM that were used for DOQQ and CCM production. The extents of photographs along the perimeter will extend beyond the CCM imagery because the entire footprint of any seamline has been included.
Note: The files will be in either UTM zone 14 or 15, depending on which zone covers the majority of the county. | |||
| Section 3 | Spatial Data Organization (not used in this metadata) | |||
| Section 4 | Coordinate System | |||
| Horizontal Coordinate Scheme | Universal Transverse Mercator | |||
| UTM Zone Number | 15 | |||
| Horizontal Datum | NAD83 | |||
| Horizontal Units | meters | |||
| Section 5 | Attributes | |||
| Overview | FID: Seam polygon identification
IDATE: Imagery date defined by seam polygon (date) SDATE: Start date and time of acquisition for imagery defined by seam polygon (string) EDATE: End date and time of acquisition for imagery defined by seam polygon (string) BCON: Acquisition collection medium (band content). - NC: Natural Color - CIR: Color Infrared - MB: Multi Band Imagery CAM_TYPE: Camera types for source imagery CAM_MAN: Camera manufacturer for source imagery CAM_MOD: Camera model SENSNUM: Sensor identification number, sensor head or lens serial number Shape_Area: Seam polygon area measurement HARD_FIRM: Camera system hardware/firmware major version used AC_TYPE: Aircraft type ACTAILNUM: Aircraft tail number RED_RNGE: Red electromagnetic spectrum in nanometers for source imagery GREEN_RNGE: Green electromagnetic spectrum in nanometers for source imagery BLUE_RNGE: Blue electromagnetic spectrum in nanometers for source imagery NIR_RNGE: NIR electromagnetic spectrum in nanometers for source imagery | |||
| Detailed Citation | None | |||
| Table Detail: | ||||
| Section 6 | Distribution | |||
| Publisher | U.S. Department of Agriculture | |||
| Publication Date | 2017 | |||
| Contact Person Information | Nancy Rader,
GIS Data Specialist Minnesota Geospatial Information Office (MnGeo) 658 Cedar Street, Room 300 St. Paul, MN 55155 Phone: 651-201-2489 Email: gisinfo.mngeo@state.mn.us | |||
| Distributor's Data Set Identifier | NAIP 2017 dates | |||
| Distribution Liability | 1. FSA Liability Statement: In no event shall the creators, custodians, or distributors of this information be liable for any damages arising out of its use (or the inability to use it).
2. MnGeo's data disclaimer is online: https://www.mngeo.state.mn.us/chouse/disclaimer.html | |||
| Ordering Instructions | 1. To obtain all of Minnesota's seamline shapefiles (1 per county), click below after Online Linkage. Doing so will tell your browser to start downloading a compressed 'ZIP' file which will contain the following:
For each county: - Shapefile (.shp, .shx, .dbf, .prj) - Original FSA documentation (.xml) for the data set The filenames use the county codes listed at: https://nrcs.app.box.com/v/naip/file/168958604571 2. A county's seamline shapefile is also included with each NAIP2017 county mosaic file downloadable from the U.S. Dept. of Agriculture, Natural Resources Conservation Service's Geospatial Data Gateway site: https://datagateway.nrcs.usda.gov/GDGHome_DirectDownLoad.aspx | |||
| Online Linkage | I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details. | |||
| Section 7 | Metadata Reference | |||
| Metadata Date | 03/09/2018 | |||
| Contact Person Information | Nancy Rader,
GIS Data Specialist Minnesota Geospatial Information Office (MnGeo) 658 Cedar Street, Room 300 St. Paul, MN 55155 Phone: 651-201-2489 Email: gisinfo.mngeo@state.mn.us | |||
| Metadata Standard Name | Minnesota Geographic Metadata Guidelines | |||
| Metadata Standard Version | 1.2 | |||
| Metadata Standard Online Linkage | https://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm | |||