Subproject

Developing and testing Dynamic Global Vegetation Models in the context of climate change in Amazonia

Dynamic Global Vegetation Models (DGVMs) are often run coupled to climate models and are important for informing climate change policy. However, these models have not been extensively tested in Amazonian ecosystems. This project aims to compare these models, with the objective to simulate interactions between climate, forests and land use in Amazonia. The project is led by Paul Moorcroft at Harvard, in cooperation with ecosystem modelling groups from the University of Arizona, the Woods Hole Research Centre and the University of Viçosa (Brazil). One component of the project involves the use of vegetation models to evaluate ecosystem dynamics at a number of Amazonian sites including RAINFOR sites, flux tower sites and sites of disturbance experiments (fire, drought and logging). A second component of the project involves running the models over the entire Amazon region, over recent decades and into the future, following different climate change scenarios. The Oxford team is running simulations with JULES (Joint UK Land Environment Simulator), the UK community land surface model.

The Oxford component of this work is being implemented by Dr David Galbraith

Thus work is funded by the Gordon and Bettu Moore Foundation.

Where are we working?

Bullet_red - Site Bullet_blue - Plot Bullet_yellow - Field station

Photos and images

Medium_nature
Uploaded 6 Feb 2014 by Cécile Girardin. Copyright © 2017.

Congratulations to the GEM team (Chris, Yadvinder & Liana) who co-authored a paper in Nature this week (cover story):

"The paper answers a long-standing question about the net carbon balance of the Amazon forest. It uses aircraft flights throughout the year at four different locations to measure the change in carbon dioxide concentration if air as it passes over the Amazon Basin. The study shows that in wet years and wet seasons the Amazon is a net sink (i.e. absorbs carbon) from the atmosphere, but in dry years and dry seasons it is carbon neutral or a source of carbon. Our main contribution in Oxford was to provide insight from our RAINFOR-GEM intensive monitoring plots across Amazonia, which suggest that the loss of the carbon sink was caused by a reduction in photosynthesis." (Y. Malhi blog, Feb 2014)

Gatti L.V., M. Gloor, J. B. Miller, C. E. Doughty, Y. Malhi, L. G. Domingues, L. S. Basso, A. Martinewski, C. S. C. Correia, V. F. Borges, S. Freitas, R. Braz, L. O. Anderson, H. Rocha, J. Grace, O. L. Phillips & J. Lloyd Drought sensitivity of Amazonian carbon balance revealed by atmospheric measurements, Nature 506, 76–80. Supplementary Info

Download the paper from here: http://is.gd/WZmcSs

  • Thumb_nature
  • Thumb_p1010502
  • Thumb_p1010507
  • Thumb_p1010509
  • Thumb_p1010511
  • Thumb_p1010520
  • Thumb_p1010527
  • Thumb_p1010513
  • Thumb_p1010519
  • Thumb_p1010524
  • Thumb_p1010552
  • Thumb_p1010570
  • Thumb_p1010572
  • Thumb_p1010574
  • Thumb_p1010575
  • Thumb_p1010576
  • Thumb_p1010578
  • Thumb_p1010579
  • Thumb_p1010585
  • Thumb_p1010581

Latest news

Older news

People

  • Thumb_malhi_pic_forest

    Yadvinder Malhi

    I am Professor of Ecosystem Science at Oxford University.
    I lead the Ecosystems Programme at the Environmental Change Institute, with a focus of understanding the functioning of tropical forests and...

  • Thumb_default
  • Thumb_profile_photo

    Georgia Pickavance

    I am a Database Assistant, supporting the tropical forest database ForestPlots.net and associated research projects RAINFOR, Afritron and T-FORCES. I am studying for a Masters in GIS alongside my research...

  • Thumb_default

    Oliver Phillips

    My long-term research goal is to understand the dynamics of carbon and biodiversity across the world’s tropical forests, how these change with our changing climate, and how they may feedback...