Global Trends in Seasonality of Normalized Difference Vegetation Index (NDVI), 1982–2011
A 30-year series of global monthly Normalized Difference Vegetation Index (NDVI) imagery derived from the Global Inventory Modeling and Mapping Studies (GIMMS) NDVI3g archive was analyzed for the presence of trends in changing seasonality. Using the Seasonal Trend Analysis (STA) procedure, over half...
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ftcityunivny:oai:academicworks.cuny.edu:le_pubs-1183 2023-05-15T18:30:51+02:00 Global Trends in Seasonality of Normalized Difference Vegetation Index (NDVI), 1982–2011 Eastman, J. Ronald Sangermano, Florencia Machado, Elia Axinia Rogan, John Anyamba, Assaf 2013-09-30T07:00:00Z application/pdf https://academicworks.cuny.edu/le_pubs/180 https://academicworks.cuny.edu/cgi/viewcontent.cgi?article=1183&context=le_pubs English eng CUNY Academic Works https://academicworks.cuny.edu/le_pubs/180 https://academicworks.cuny.edu/cgi/viewcontent.cgi?article=1183&context=le_pubs Publications and Research NDVI GIMMS NDVI3g Seasonal Trend Analysis AVHRR phenology Environmental Sciences article 2013 ftcityunivny 2021-04-10T19:02:47Z A 30-year series of global monthly Normalized Difference Vegetation Index (NDVI) imagery derived from the Global Inventory Modeling and Mapping Studies (GIMMS) NDVI3g archive was analyzed for the presence of trends in changing seasonality. Using the Seasonal Trend Analysis (STA) procedure, over half (56.30%) of land surfaces were found to exhibit significant trends. Almost half (46.10%) of the significant trends belonged to three classes of seasonal trends (or changes). Class 1 consisted of areas that experienced a uniform increase in NDVI throughout the year, and was primarily associated with forested areas, particularly broadleaf forests. Class 2 consisted of areas experiencing an increase in the amplitude of the annual seasonal signal whereby increases in NDVI in the green season were balanced by decreases in the brown season. These areas were found primarily in grassland and shrubland regions. Class 3 was found primarily in the Taiga and Tundra biomes and exhibited increases in the annual summer peak in NDVI. While no single attribution of cause could be determined for each of these classes, it was evident that they are primarily found in natural areas (as opposed to anthropogenic land cover conversions) and that they are consistent with climate-related ameliorations of growing conditions during the study period. Article in Journal/Newspaper taiga Tundra City University of New York: CUNY Academic Works |
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Open Polar |
collection |
City University of New York: CUNY Academic Works |
op_collection_id |
ftcityunivny |
language |
English |
topic |
NDVI GIMMS NDVI3g Seasonal Trend Analysis AVHRR phenology Environmental Sciences |
spellingShingle |
NDVI GIMMS NDVI3g Seasonal Trend Analysis AVHRR phenology Environmental Sciences Eastman, J. Ronald Sangermano, Florencia Machado, Elia Axinia Rogan, John Anyamba, Assaf Global Trends in Seasonality of Normalized Difference Vegetation Index (NDVI), 1982–2011 |
topic_facet |
NDVI GIMMS NDVI3g Seasonal Trend Analysis AVHRR phenology Environmental Sciences |
description |
A 30-year series of global monthly Normalized Difference Vegetation Index (NDVI) imagery derived from the Global Inventory Modeling and Mapping Studies (GIMMS) NDVI3g archive was analyzed for the presence of trends in changing seasonality. Using the Seasonal Trend Analysis (STA) procedure, over half (56.30%) of land surfaces were found to exhibit significant trends. Almost half (46.10%) of the significant trends belonged to three classes of seasonal trends (or changes). Class 1 consisted of areas that experienced a uniform increase in NDVI throughout the year, and was primarily associated with forested areas, particularly broadleaf forests. Class 2 consisted of areas experiencing an increase in the amplitude of the annual seasonal signal whereby increases in NDVI in the green season were balanced by decreases in the brown season. These areas were found primarily in grassland and shrubland regions. Class 3 was found primarily in the Taiga and Tundra biomes and exhibited increases in the annual summer peak in NDVI. While no single attribution of cause could be determined for each of these classes, it was evident that they are primarily found in natural areas (as opposed to anthropogenic land cover conversions) and that they are consistent with climate-related ameliorations of growing conditions during the study period. |
format |
Article in Journal/Newspaper |
author |
Eastman, J. Ronald Sangermano, Florencia Machado, Elia Axinia Rogan, John Anyamba, Assaf |
author_facet |
Eastman, J. Ronald Sangermano, Florencia Machado, Elia Axinia Rogan, John Anyamba, Assaf |
author_sort |
Eastman, J. Ronald |
title |
Global Trends in Seasonality of Normalized Difference Vegetation Index (NDVI), 1982–2011 |
title_short |
Global Trends in Seasonality of Normalized Difference Vegetation Index (NDVI), 1982–2011 |
title_full |
Global Trends in Seasonality of Normalized Difference Vegetation Index (NDVI), 1982–2011 |
title_fullStr |
Global Trends in Seasonality of Normalized Difference Vegetation Index (NDVI), 1982–2011 |
title_full_unstemmed |
Global Trends in Seasonality of Normalized Difference Vegetation Index (NDVI), 1982–2011 |
title_sort |
global trends in seasonality of normalized difference vegetation index (ndvi), 1982–2011 |
publisher |
CUNY Academic Works |
publishDate |
2013 |
url |
https://academicworks.cuny.edu/le_pubs/180 https://academicworks.cuny.edu/cgi/viewcontent.cgi?article=1183&context=le_pubs |
genre |
taiga Tundra |
genre_facet |
taiga Tundra |
op_source |
Publications and Research |
op_relation |
https://academicworks.cuny.edu/le_pubs/180 https://academicworks.cuny.edu/cgi/viewcontent.cgi?article=1183&context=le_pubs |
_version_ |
1766214453543567360 |