SEARCH:
THIS SITE
|
PEOPLE
|
DEPARTMENTS
|
PENN STATE
HOME
ABOUT
FIND DATA: DATA DISCOVERY
APPS & TOOLS
SHARE DATA
NEW DATA
RESEARCH GATEWAYS
Find Data: Data Discovery
Data Summary
Back to Search Results
Title
National Agriculture Imagery Program (NAIP) County Mosaics for Virginia
Date
2009
Abstract
This data set contains imagery from the National Agriculture Imagery Program (NAIP). NAIP acquires digital ortho imagery during the agricultural growing seasons in the continental U.S.. A primary goal of the NAIP program is to enable availability of ortho imagery within one year of acquisition. NAIP provides two main products: 1 meter ground sample distance (GSD) ortho imagery rectified to a horizontal accuracy of within +/- 5 meters of reference digital ortho quarter quads (DOQQ's) from the National Digital Ortho Program (NDOP) or from the National Agriculture Imagery Program (NAIP); 1 meter GSD ortho imagery rectified to within +/- 6 meters to true ground. The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 meter buffer on all four sides. NAIP quarter quads are formatted to the UTM coordinate system using NAD83. NAIP imagery may contain as much as 10% cloud cover per tile. This file was generated by compressing NAIP quarter quadrangle tiles that cover a county. Two types of compression may be used for 2008 NAIP imagery: MrSID and JPEG 2000. Target values for the compression ratio are (15:1).
Metadata
Click here for full metadata
Data DOI
n/a
Researchers
Core Data
Data Access
Download Data
Formats
GIS (Shapefile)