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Census and Survey Research Branch
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Geospatial Information Branch
Area Frame | Spatial Analysis

Vegetation Condition from AVHRR NDVI Data
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Vegetation Condition images for the 2004 crop season based on NDVI (Normalized Difference Vegetation Index) are available for selection in the table below. The Vegetation Condition data are arranged by two week composite periods. Images from NOAA-16 or NOAA-17 data (starting in 2001) are not water vapor corrected, while images from NOAA-14 (prior to 2001) were. Caution: the GIF and PDF images displayed are very large, ranging from 0.3MB to 1.9MB.

Select a 2004 Biweekly Period to View:
03/11-03/24 03/25-04/07 04/08-04/21 04/22-05/05
05/06-05/19 05/20-06/02 06/03-06/16 06/17-06/31
07/01-07/14 07/15-07/28 07/29-08/11 08/12-08/25
08/26-09/08 09/09-09/22 09/23-10/06 10/07-10/20

Available Years
NOAA-17: 2008 2007 2006 2005 2004
NOAA-16: 2003 2002 2001
NOAA-14: 1999 1998 1997 1996 1995

For more information about this topic or about the NASS Spatial Analysis Research Section (SARS), contact the GeoSpatial Information Branch at HQ_RDD_GIB@nass.usda.gov.
Growing Season Animations | National Crop Progress
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