How Forests Attract Rain: An Examination of a New Hypothesis

@inproceedings{Sheil2009HowFA,
  title={How Forests Attract Rain: An Examination of a New Hypothesis},
  author={Douglas Sheil and Daniel Murdiyarso},
  year={2009}
}
A new hypothesis suggests that forest cover plays a much greater role in determining rainfall than previously recognized. It explains how forested regions generate large-scale flows in atmospheric water vapor. Under this hypothesis, high rainfall occurs in continental interiors such as the Amazon and Congo river basins only because of near-continuous forest cover from interior to coast. The underlying mechanism emphasizes the role of evaporation and condensation in generating atmospheric… 
Revisiting forest impact on atmospheric water vapor transport and precipitation
Using a robust global precipitation database, we analyze coast-to-interior seasonal precipitation distributions over the world’s major forest regions. We find that the active functioning of boreal
Forests, atmospheric water and an uncertain future: the new biology of the global water cycle
  • D. Sheil
  • Environmental Science
    Forest Ecosystems
  • 2018
Theory and evidence indicate that trees and other vegetation influence the atmospheric water-cycle in various ways. These influences are more important, more complex, and more poorly characterised
On the forest cover–water yield debate: from demand- to supply-side thinking
Several major articles from the past decade and beyond conclude the impact of reforestation or afforestation on water yield is negative: additional forest cover will reduce and removing forests will
From blue to green water and back again: Promoting tree, shrub and forest-based landscape resilience in the Sahel.
The Biotic Pump: Condensation, atmospheric dynamics and climate.
Intense condensation associated with high evaporation from natural forest cover maintains regions of low atmospheric pressure on land. This causes moist air to flow from ocean to land, which
Detecting deforestation impacts in Southern Amazonia rainfall using rain gauges
During the last decades, several climate‐modelling studies have forecasted a decrease in precipitation in Southern Amazonia, projecting scenarios of a drier Amazon for the future in relation with
Trees, forests and water : Cool insights for a hot world
Has global environmental change caused monsoon rainforests to expand in the Australian monsoon tropics?
A large research program in the Australian monsoon tropics has concluded that monsoon rainforests have expanded within the savanna matrix, a trend that has been emulated throughout the tropics
The enduring link between forest cover and rainfall: a historical perspective on science and policy discussions
BackgroundThis article traces the history of scientific ideas connecting forest cover with rainfall to inform ongoing debates about whether forests are net users or producers of water in the
On the coupling between vegetation and the atmosphere
Recent studies suggest that vegetation can drive large-scale atmospheric circulations and substantially influence the hydrologic cycle. We present observational evidence to quantify the extent of
...
...

References

SHOWING 1-10 OF 44 REFERENCES
Hydrological functions of tropical forests: not seeing the soil for the trees?
FOREST COVER–RAINFALL RELATIONSHIPS IN A BIODIVERSITY HOTSPOT: THE ATLANTIC FOREST OF BRAZIL
It is now generally accepted that the relationship between vegetation and climate is dynamic: vegetation is influenced by climate, but feedbacks between terrestrial ecosystems and the atmosphere mean
Forest-climate interactions in fragmented tropical landscapes.
  • W. Laurance
  • Environmental Science
    Philosophical transactions of the Royal Society of London. Series B, Biological sciences
  • 2004
TLDR
Positive feedbacks among deforestation, regional climate change and fire could pose a serious threat for some tropical forests, but the details of such interactions are poorly understood.
The role of deep roots in the hydrological and carbon cycles of Amazonian forests and pastures
DEFORESTATION and logging transform more forest in eastern and southern Amazonia than in any other region of the world1–3. This forest alteration affects regional hydrology4–11 and the global carbon
Conservation of water cycle on land via restoration of natural closed-canopy forests: implications for regional landscape planning
Investigating the role of forests for maintenance of the water cycle on land is critically important in the current situation of rapid global elimination of the natural vegetation cover. In this
Impact of deforestation in the Amazon basin on cloud climatology
TLDR
It is demonstrated that the atmospheric boundary layer over the forested areas is more unstable and characterized by larger values of the convective available potential energy (CAPE) due to greater humidity than that which is found over the deforested area.
Impacts of Tropical Deforestation. Part I: Process Analysis of Local Climatic Change
Abstract The potential impacts of deforestation in the humid Tropics are examined using a version of the National Center for Atmospheric Research's CCM1 coupled with the Biosphere-Atmosphere Transfer
Biotic pump of atmospheric moisture as driver of the hydrological cycle on land
Abstract. In this paper the basic geophysical and ecological principles are jointly analyzed that allow the landmasses of Earth to remain moistened sufficiently for terrestrial life to be possible.
Control of Dry Season Evapotranspiration over the Amazonian Forest as Inferred from Observations at a Southern Amazon Forest Site
The extent to which soil water storage can support an average dry season evapotranspiration (ET) is investigated using observations from the Rebio Jaru site for the period of 2000 to 2002. During the
...
...