Skip to main content
ORNL DAAC HomeNASA Home

DAAC Home > Get Data > Regional/Global > Vegetation Collection > Data Files

Long-Term Arctic Growing Season NDVI Trends from GIMMS 3g, 1982-2012

Overview

DatasetLong-Term Arctic Growing Season NDVI Trends from GIMMS 3g, 1982-2012
DOIhttps://doi.org/10.3334/ORNLDAAC/1275
Release date2015-03-13
Project
Time period1982-06-01 to 2012-08-31

Usage Metrics

CountEarliest DateLatest DateData Usage
Citations220162017Publications citing this dataset
Downloads7902015-03-172017-12-173416 total files downloaded

Description

This data set provides normalized difference vegetation index (NDVI) data for the arctic growing season derived primarily with data from Advanced Very High Resolution Radiometer (AVHRR) sensors onboard several NOAA satellites over the years 1982 through 2012. The NDVI data, which show vegetation activity, were averaged annually for the arctic growing season (GS; June, July and August). The products include the annual GS-NDVI values and the results of a cumulative GS-NDVI time series trends analysis. The data are circumpolar in coverage at 8-km resolution and limited to greater than 20 degrees N. These normalized difference vegetation index (NDVI) trends were calculated using the third generation data set from the Global Inventory Modeling and Mapping Studies (GIMMS 3g). GIMMS 3g improves on its predecessor (GIMMS g) in three important ways. First, GIMMS 3g integrates data from NOAA-17 and 18 satellites to lengthen its record. Second, it addresses the spatial discontinuity north of 72 degrees N, by using SeaWiFS, in addition to SPOT VGT, to calibrate between the second and third versions of the AVHRR sensor (AVHRR/2 and AVHRR/3). Finally, the GIMMS 3g algorithm incorporates improved snowmelt detection and is calibrated based on data from the shorter, arctic growing season (May-September) rather than the entire year (January-December).

Dataset documentation

Citation

Download citation from Datacite
RISBibTexOther
Crosscite Citation Formatter
Guay, K.C., P.S.A. Beck, and S.J. Goetz. 2015. Long-Term Arctic Growing Season NDVI Trends from GIMMS 3g, 1982-2012. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1275

See our Data Citations and Acknowledgements policy for more information.

Data Files

Sign in to download dataset files.

Data File (Granule)File SizeDates
gimms3g_gs_ndvi_trend_8km_1982_2012_20deg_trend.tif 10.8MB 1982-06-01 to 2012-08-31
gimms3g_gs_ndvi_trend_8km_1982_2012_20deg_significance.tif 7.9MB 1982-06-01 to 2012-08-31
gimms3g_ndvi_1982-2012.nc4 115.2MB 1982-06-01 to 2012-08-31
gimms3g_gs_ndvi_trend_8km_1982_2012_20deg_landcover.tif 13.2MB 1982-06-01 to 2012-08-31

Companion Files

Expand for companion files
Toggle Companion Files

Sign in to download companion files.

Dataset has 1 companion files.

  • GIMMS3g_NDVI_Trends.pdf

Visualize and Subset Data

Advanced Data Access through THREDDS Data Sever