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Jonas Ardö

Professor

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Precipitation controls Sahel greening trend

Författare

  • Thomas Hickler
  • Lars Eklundh
  • Jonathan Seaquist
  • Benjamin Smith
  • Jonas Ardö
  • Lennart Olsson
  • Martin Sykes
  • Martin Sjöström

Summary, in English

The Sahel region has been identified as a "hot spot'' of global environmental change, but understanding of the roles of different climatic and anthropogenic forcing factors driving change in the region is incomplete. We show that a process-based ecosystem model driven by climatic and atmospheric CO2 data alone closely reproduces the satellite-observed greening trend of the Sahel vegetation and its interannual variability between 1982 and 1998. Changes in precipitation were identified as the primary driver of the aggregated simulated vegetation changes. According to the model, the increasing carbon uptake through vegetation was associated with an increasing relative carbon sink; but integrated over the whole period, the Sahel was predicted to be a net source of carbon.

Avdelning/ar

  • Institutionen för naturgeografi och ekosystemvetenskap
  • LUCSUS

Publiceringsår

2005

Språk

Engelska

Publikation/Tidskrift/Serie

Geophysical Research Letters

Volym

32

Issue

21

Dokumenttyp

Artikel i tidskrift

Förlag

American Geophysical Union (AGU)

Ämne

  • Physical Geography

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1944-8007