NLDAS Vegetation Greenness Fraction

This page contains monthly vegetation greenness fraction data files for the NLDAS domain. The data has been re-gridded from the global data sets from the NCEP Eta fixed data sets. The twelve monthly greenness fraction fields are assumed to be valid at the 15th of each month. The values are in percentages, ranging from 1 to 99 over land, and are 0 over water. All information on this page has been provided by Qingyun Duan of the NOAA Office of Hydrology, and all inquires concerning the data should be directed toward him.

NLDAS Vegetation Greenness Fraction Illustrations

January greenness fractions over the 1/8th-degree NLDAS domain. Values of 0-10% occur over the northern 1/3rd of the domain. Values of 20-50% occur over southeastern regions, and values of 40-80% occur over western areas.
January Greenness Fraction
July greenness fractions over the 1/8th-degree NLDAS domain.  Values of 60-100% occur over the eastern half and extreme western portions of the domain. Values of 0-50% occur over the remainder of the domain.
July Greenness Fraction
February	greenness fractions over the 1/8th-degree NLDAS domain. Values of 0-10% occur over the northern 1/3rd of the domain. Values of 20-50% occur over southeastern regions, and values of 40-80% occur over western areas.
February Greenness Fraction
August greenness fractions over the 1/8th-degree NLDAS domain. Values of 60-100% occur over the eastern half, extreme western and extreme southwestern portions of the domain. Values of 0-50% occur over the remainder of the domain.
August Greenness Fraction
March greenness fractions over the 1/8th-degree NLDAS domain. Values of 0-20% occur over the northern 1/3rd of the domain. Values of 30-70% occur over southeastern regions, and values of 40-90% occur over western areas.
March Greenness Fraction
September greenness fractions over the 1/8th-degree NLDAS domain. Values of 60-100% occur over the eastern half, extreme western and extreme southwestern portions of the domain. Values of 0-50% occur over the remainder of the domain.
September Greenness Fraction
April greenness fractions over the 1/8th-degree NLDAS domain. Values of 40-90% occur over the southeastern 1/3 and extreme western portions of the domain. Values of 0-40% occur over the remainder of the domain.
April Greenness Fraction
October greenness fractions over the 1/8th-degree NLDAS domain. Values of 40-90% occur over the eastern half, extreme western and extreme southwestern portions of the domain. Values of 0-40% occur over the remainder of the domain.
October Greenness Fraction
May greenness fractions over the 1/8th-degree NLDAS domain. Values of 60-100% occur over the southeastern 1/3 and extreme western portions of the domain. Values of 0-60% occur over the remainder of the domain.
May Greenness Fraction
November greenness fractions over the 1/8th-degree NLDAS domain. Values of 40-70% occur over the southeastern 1/3rd, extreme western and extreme southwestern portions of the domain. Values of 0-40% occur over the remainder of the domain.
November Greenness Fraction
June greenness fractions over the 1/8th-degree NLDAS domain. Values of 60-100% occur over the eastern 1/2 and extreme western portions of the domain. Values of 0-60% occur over the remainder of the domain.
June Greenness Fraction
December greenness fractions over the 1/8th-degree NLDAS domain. Values of 30-70% occur over the southeastern third, extreme western and extreme southwestern portions of the domain. Values of 0-30% occur over the remainder of the domain.
December Greenness Fraction

NLDAS Vegetation Greenness Fraction ASCII Data Sets

The following 12 greenness fraction files contain monthly greenness fraction values over the entire NLDAS domain. The files consists of 1 greenness fraction value per 1/8th-degree grid box, with gridpoint (1,1) located at the upper left of the NLDAS grid. The files can be read with the following statement:

      read(10,40) ((ifrac(i,j),i=1,464),j=1,224)
40    format(464i3))