Next Article in Journal / Special Issue
Trend Change Detection in NDVI Time Series: Effects of Inter-Annual Variability and Methodology
Previous Article in Journal
Large-Scale Oceanic Variability Associated with the Madden-Julian Oscillation during the CINDY/DYNAMO Field Campaign from Satellite Observations
Previous Article in Special Issue
Global Latitudinal-Asymmetric Vegetation Growth Trends and Their Driving Mechanisms: 1982–2009
Remote Sens. 2013, 5(5), 2093-2112; doi:10.3390/rs5052093

Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years

1,†,* , 1,†
1 Department of Earth and Environment, Boston University, 675 Commonwealth Avenue, Boston, MA 02215, USA 2 Atmospheric and Environmental Research Incorporated, Lexington, MA 02421, USA These authors contributed equally to this work.
* Author to whom correspondence should be addressed.
Received: 1 March 2013 / Revised: 24 April 2013 / Accepted: 24 April 2013 / Published: 2 May 2013
(This article belongs to the Special Issue Monitoring Global Vegetation with AVHRR NDVI3g Data (1981-2011))
View Full-Text   |   Download PDF [2833 KB, uploaded 19 June 2014]   |   Browse Figures


Arctic-Boreal region—mainly consisting of tundra, shrub lands, and boreal forests—has been experiencing an amplified warming over the past 30 years. As the main driving force of vegetation growth in the north, temperature exhibits tight coupling with the Normalized Difference Vegetation Index (NDVI)—a proxy to photosynthetic activity. However, the comparison between North America (NA) and northern Eurasia (EA) shows a weakened spatial dependency of vegetation growth on temperature changes in NA during the past decade. If this relationship holds over time, it suggests a 2/3 decrease in vegetation growth under the same rate of warming in NA, while the vegetation response in EA stays the same. This divergence accompanies a circumpolar widespread greening trend, but 20 times more browning in the Boreal NA compared to EA, and comparative greening and browning trends in the Arctic. These observed spatial patterns of NDVI are consistent with the temperature record, except in the Arctic NA, where vegetation exhibits a similar long-term trend of greening to EA under less warming. This unusual growth pattern in Arctic NA could be due to a lack of precipitation velocity compared to the temperature velocity, when taking velocity as a measure of northward migration of climatic conditions.
Keywords: GIMMS; NDVI; vegetation; change; North America; Eurasia GIMMS; NDVI; vegetation; change; North America; Eurasia
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
MDPI and ACS Style

Bi, J.; Xu, L.; Samanta, A.; Zhu, Z.; Myneni, R. Divergent Arctic-Boreal Vegetation Changes between North America and Eurasia over the Past 30 Years. Remote Sens. 2013, 5, 2093-2112.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


[Return to top]
Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert