Journal ArticleDOI
Analysis of Sahelian vegetation dynamics using NOAA-AVHRR NDVI data from 1981–2003
TLDR
In this article, a 23-year time series of Remotely sensed measurements from NOAA-AVHRR expressed as normalized difference vegetation index (NDVI) have been used for long-term studies of Sahel region.About:
This article is published in Journal of Arid Environments.The article was published on 2005-11-01. It has received 727 citations till now. The article focuses on the topics: Enhanced vegetation index & Normalized Difference Vegetation Index.read more
Citations
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Journal ArticleDOI
A Non-Stationary 1981–2012 AVHRR NDVI3g Time Series
TL;DR: The NDVI3g time series is an improved 8-km normalized difference vegetation index (NDVI) data set produced from Advanced Very High Resolution Radiometer (AVHRR) instruments that extends from 1981 to the present as discussed by the authors.
Journal ArticleDOI
Recent trends in vegetation dynamics in the African Sahel and their relationship to climate
TL;DR: In this article, the authors investigated temporal and spatial patterns of vegetation greenness and rainfall variability in the African Sahel and their interrelationships based on analyses of Normalized Difference Vegetation Index (NDVI) time series for the period 1982-2003 and gridded satellite rainfall estimates.
Journal ArticleDOI
Proxy global assessment of land degradation
TL;DR: In this article, the authors defined land degradation as a long-term decline in ecosystem function and productivity, which may be assessed using longterm, remotely sensed normalized difference vegetation index (NDVI) data.
Book ChapterDOI
Assessment of observed changes and responses in natural and managed systems
TL;DR: Abeku et al. as discussed by the authors presented a survey of the work of Abeku and his colleagues, including Isabelle Cote (Canada), Mark Dyurgerov (USA), Martin Edwards (UK), Kristie L. Ebi (US), Nicole Estrella (Germany), Donald L. MacMynowski (USA) and Patricia Morellato (Brazil), Jeff T. Price (USA).
Journal ArticleDOI
Characteristics, drivers and feedbacks of global greening
Shilong Piao,Shilong Piao,Xuhui Wang,Taejin Park,Taejin Park,Chi Chen,Xu Lian,Yue He,Jarle W. Bjerke,Anping Chen,Philippe Ciais,Philippe Ciais,Hans Tømmervik,Ramakrishna R. Nemani,Ranga B. Myneni +14 more
TL;DR: In this article, the authors examined the detection of the greening signal, its causes and its consequences, and showed that greening is pronounced over intensively farmed or afforested areas, such as in China and India, reflecting human activities.
References
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Journal ArticleDOI
Red and photographic infrared linear combinations for monitoring vegetation
TL;DR: In this article, the relationship between various linear combinations of red and photographic infrared radiances and vegetation parameters is investigated, showing that red-IR combinations to be more significant than green-red combinations.
Journal ArticleDOI
Global and Regional Scale Precipitation Patterns Associated with the El Niño/Southern Oscillation
TL;DR: In this article, the amplitude and phase of the Arm harmonic fitted to the 24-month composite values are plotted in the form of a vector for each station, which reveals both the regions of spatially coherent ENSO-related precipitation and the phase of this signal in relation to the evolution of the composite episode.
Journal ArticleDOI
Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999
Ramakrishna R. Nemani,Charles D. Keeling,Hirofumi Hashimoto,Hirofumi Hashimoto,William M. Jolly,Stephen C. Piper,Compton J. Tucker,Ranga B. Myneni,Steven W. Running +8 more
TL;DR: It is indicated that global changes in climate have eased several critical climatic constraints to plant growth, such that net primary production increased 6% (3.4 petagrams of carbon over 18 years) globally.
Journal ArticleDOI
Characteristics of maximum-value composite images from temporal AVHRR data
TL;DR: In this paper, satellite data from the Advanced Very High Resolution Radiometer sensor have been processed over several days and combined to produce spatially continuous cloud-free imagery over large areas with sufficient temporal resolution to study green-vegetation dynamics.
Journal ArticleDOI
Canopy reflectance, photosynthesis and transpiration
TL;DR: In this paper, a two-stream approximation model of radiative transfer was used to calculate values of hemispheric canopy reflectance in the visible and near-infrared wavelength intervals.