Journal ArticleDOI
A 20-year study of NDVI variability over the Northeast Region of Brazil
Reads0
Chats0
TLDR
In this paper, the authors examined the spatial heterogeneity and temporal dynamics of the Northeast Region of Brazil (NEB) using a 20-year time series of Normalized Difference Vegetation Index (NDVI) observations, derived from the National Oceanographic and Atmospheric Administration (NOAA)-Advanced Very High Resolution Radiometer (AVHRR) instrument.About:
This article is published in Journal of Arid Environments.The article was published on 2006-10-01. It has received 209 citations till now. The article focuses on the topics: Normalized Difference Vegetation Index & Vegetation.read more
Citations
More filters
Journal ArticleDOI
Remote sensing imagery in vegetation mapping: a review
TL;DR: An overview of how to use remote sensing imagery to classify and map vegetation cover is presented, focusing on the comparisons of popular remote sensing sensors, commonly adopted image processing methods and prevailing classification accuracy assessments.
Journal ArticleDOI
Sensitivity of global terrestrial ecosystems to climate variability
Alistair W. R. Seddon,Marc Macias-Fauria,Peter R. Long,David Benz,Katherine J. Willis,Katherine J. Willis,Katherine J. Willis +6 more
TL;DR: This study provides a quantitative methodology for assessing the relative response rate of ecosystems—be they natural or with a strong anthropogenic signature—to environmental variability, which is the first step towards addressing why some regions appear to be more sensitive than others, and what impact this has on the resilience of ecosystem service provision and human well-being.
Journal Article
El Nino and climate change
TL;DR: A comprehensive statistical analysis of how an index of the Southern Oscillation changed from 1882 to 1995 was given by Trenberth and Hoar as mentioned in this paper, with a focus on the unusual nature of the 1990-1995 El Nino-Southern Oscillations (ENSO) warm event in the context of an observed trend for more El NINO and fewer La Nina events after the late 1970s.
Journal ArticleDOI
Validating CHIRPS-based satellite precipitation estimates in Northeast Brazil
TL;DR: In this paper, the monthly rainfall derived from the satellite-based rainfall product, Climate Hazards Group InfraRed Precipitation with Stations (CHIRPS v.2), is compared with observation from 21 ground stations in the Northeast Brazil (NEB) for the period 1981-2013.
Journal ArticleDOI
Riparian vegetation NDVI dynamics and its relationship with climate, surface water and groundwater
Baihua Fu,Isabela Burgher +1 more
TL;DR: In this article, the authors used regression tree analysis to investigate long-term NDVI data (23 years) at semi-arid riparian areas in the Namoi catchment, Australia and found that in general maximum temperature is the variable that primarily splits NDVI values, followed by antecedent 28-day rainfall and then inter-flood dry period and groundwater levels.
References
More filters
Journal ArticleDOI
Variations in northern vegetation activity inferred from satellite data of vegetation index during 1981 to 1999
Liming Zhou,Compton J. Tucker,Robert K. Kaufmann,Daniel Slayback,N.V. Shabanov,Ranga B. Myneni +5 more
TL;DR: In this paper, the authors present results from analyses of a recently developed satellite-sensed normalized difference vegetation index (NDVI) data set for the period July 1981 to December 1999, showing that about 61% of the total vegetated area between 40°N and 70°N in Eurasia shows a persistent increase in growing season NDVI over a broad contiguous swath of land from central Europe through Siberia to the Aldan plateau, where almost 58% (7.3×106 km2) is forests and woodlands.
Journal ArticleDOI
Oceanic forcing of Sahel rainfall on interannual to interdecadal time scales.
TL;DR: Evidence is presented to suggest that variability of rainfall in the Sahel results from the response of the African summer monsoon to oceanic forcing, amplified by land-atmosphere interaction.
Journal ArticleDOI
The 1990–1995 El Niño‐Southern Oscillation Event: Longest on Record
TL;DR: In this article, the authors carried out several statisticaJ tests to assess the likelihood that the recent behavior of the Southern Oscillation (SO) is part of a natural decadal timescae variation.
Journal ArticleDOI
Satellite remote sensing of total herbaceous biomass production in the Senegalese Sahel - 1980-1984
TL;DR: In this article, a strong correlation between the integrated NOAA-7 satellite data and end-of-season above-ground dry biomass was found for ground samples collected over a 3-year period.
Journal ArticleDOI
North American vegetation patterns observed with the NOAA-7 advanced very high resolution radiometer
TL;DR: In this article, the authors used a very high-resolution radiometer on the current series of U.S. National Oceanic and Atmospheric Administration meteorological satellites to study the seasonality of North American natural and cultivated vegetation.