Advanced

Broad-scale Increase in NPP Quantified for the African Sahel, 1982-1999

Seaquist, Jonathan LU ; Olsson, Lennart LU ; Ardö, Jonas LU and Eklundh, Lars LU (2006) In International Journal of Remote Sensing 27(22). p.5115-5122
Abstract
In association with a recently discovered greening trend in the Sahel, several interesting new perspectives have appeared in the literature regarding its climate and ecology. In this Letter, satellite data from 1982 to 1999 and a light use efficiency model are used to map net primary production (NPP) increases throughout the Sahel (total area of 1.13 x 10(13) m(2)). A patchy, east-west band of increasing NPP is identified, with several hotspots showing large increases. The total rate of NPP change for the Sahel is estimated to be 51.0 Mt C year(-1) over the 18-year period, yielding an absolute net gain of 918.0 Mt C. This increase is associated with a decrease in the inter-annual variability of NPP for the 1990s compared to the 1980s.... (More)
In association with a recently discovered greening trend in the Sahel, several interesting new perspectives have appeared in the literature regarding its climate and ecology. In this Letter, satellite data from 1982 to 1999 and a light use efficiency model are used to map net primary production (NPP) increases throughout the Sahel (total area of 1.13 x 10(13) m(2)). A patchy, east-west band of increasing NPP is identified, with several hotspots showing large increases. The total rate of NPP change for the Sahel is estimated to be 51.0 Mt C year(-1) over the 18-year period, yielding an absolute net gain of 918.0 Mt C. This increase is associated with a decrease in the inter-annual variability of NPP for the 1990s compared to the 1980s. These results lay the groundwork for untangling the effects of direct, localised human impact and climate forcing on land cover by conducting model intercomparison experiments, contextualizing the role the Sahel may play in the tropical carbon cycle, and for reducing the uncertainty regarding Sahelian carbon sequestration. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Remote Sensing
volume
27
issue
22
pages
5115 - 5122
publisher
Taylor & Francis
external identifiers
  • wos:000243085000013
  • scopus:33751565253
ISSN
1366-5901
DOI
10.1080/01431160600868458
language
English
LU publication?
yes
id
e72dd34a-155d-45fa-b4a1-2c891d58cca8 (old id 641660)
date added to LUP
2007-12-17 12:28:14
date last changed
2019-08-07 01:36:03
@article{e72dd34a-155d-45fa-b4a1-2c891d58cca8,
  abstract     = {In association with a recently discovered greening trend in the Sahel, several interesting new perspectives have appeared in the literature regarding its climate and ecology. In this Letter, satellite data from 1982 to 1999 and a light use efficiency model are used to map net primary production (NPP) increases throughout the Sahel (total area of 1.13 x 10(13) m(2)). A patchy, east-west band of increasing NPP is identified, with several hotspots showing large increases. The total rate of NPP change for the Sahel is estimated to be 51.0 Mt C year(-1) over the 18-year period, yielding an absolute net gain of 918.0 Mt C. This increase is associated with a decrease in the inter-annual variability of NPP for the 1990s compared to the 1980s. These results lay the groundwork for untangling the effects of direct, localised human impact and climate forcing on land cover by conducting model intercomparison experiments, contextualizing the role the Sahel may play in the tropical carbon cycle, and for reducing the uncertainty regarding Sahelian carbon sequestration.},
  author       = {Seaquist, Jonathan and Olsson, Lennart and Ardö, Jonas and Eklundh, Lars},
  issn         = {1366-5901},
  language     = {eng},
  number       = {22},
  pages        = {5115--5122},
  publisher    = {Taylor & Francis},
  series       = {International Journal of Remote Sensing},
  title        = {Broad-scale Increase in NPP Quantified for the African Sahel, 1982-1999},
  url          = {http://dx.doi.org/10.1080/01431160600868458},
  volume       = {27},
  year         = {2006},
}