NOAA GVI GUIDE

2nd and 3rd Generation GVI Sample Imagery

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The following section contains 24 thumbnail images of selected Second and Third Generation GVI data arranged in a matrix of 6 rows x 4 columns. The months of February, May, August and November are represented in each row of images. The first two rows contain the same data but are displayed in different map projections. The images are the scaled Normalized Differential Vegetation Index (NDVI) data in Polar Stereographic (Northern Hemisphere only) and Mercator projections, respectively. The third and fourth rows contain Third Generation NDVI data B-level (weekly) and D-level (climatology) images, respectively, for 1996. The fifth and sixth rows contain the Third Generation Precipitable Water Index (PWI) data B-level and D-level images, respectively, for 1996. Detailed information on GVI, NDVI, PWI, Second Generation, Third Generation and the different data levels can be found in the NOAA Global Vegetation Index Users Guide. Later in this section, these same 24 images are displayed slightly differently. Each row of four images fits on one screen, so that the data can be compared between the different months. If a user wants to examine an image in more detail, they can click anywhere on the image and display the full size image.

Images processed by Ralph E. Meiggs, Physical Scientist, NCDC.

2nd Generation Weekly NDVI - 1996 Series, Polar Stereo Northern Hemisphere
Series of 4 Images Displayed
2nd Gen Weekly NH
FEBRUARY		 2nd Gen Weekly NH
MAY		 2nd Gen Weekly NH
AUGUST		 2nd Gen Weekly NH
NOVEMBER
2nd Generation Weekly NDVI - 1996 Series, Mercator
Series of 4 Images Displayed
2nd Gen Weekly Mercator
FEBRUARY		 2nd Gen Weekly Mercator
MAY 		2nd Gen Weekly Mercator
AUGUST		 2nd Gen Weekly Mercator
NOVEMBER
3rd Generation B-level NDVI -1996 Series, Plate Carrée
Series of 4 Images Displayed
3rd Gen B Level NDVI
FEBRUARY		 3rd Gen B Level NDVI
MAY		 3rd Gen B Level NDVI
AUGUST		 3rd Gen B Level NDVI
NOVEMBER
3rd Generation D-level mean NDVI - 1996 Series, Plate Carrée
Series of 4 Images Displayed
3rd Gen D Level NDVI
FEBRUARY		 3rd Gen D Level NDVI
MAY		 3rd Gen D Level NDVI
AUGUST		 3rd Gen D Level NDVI
NOVEMBER
3rd Generation B-level PWI - 1996 Series, Plate Carrée
Series of 4 Images Displayed
3rd Gen B Level PWI
FEBRUARY		 3rd Gen B Level PWI
MAY		 3rd Gen B Level PWI
AUGUST		 3rd Gen B Level PWI
NOVEMBER
3rd Generation D-level mean PWI - 1996 Series, Plate Carrée
Series of 4 Images Displayed
3rd Gen D Level PWI
FEBRUARY		 3rd Gen D Level PWI
MAY		 3rd Gen D Level PWI
AUGUST		 3rd Gen D Level PWI
NOVEMBER

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