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Related Experiment Video

Updated: Apr 18, 2026

Simulating Temperature in a Soil Incubation Experiment

Simulating Temperature in a Soil Incubation Experiment

Published on: October 28, 2022

Urgent need for warming experiments in tropical forests.

Molly A Cavaleri¹, Sasha C Reed, W Kolby Smith

¹School of Forest Resources & Environmental Science, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, 49931, USA.

Global Change Biology

|February 3, 2015

Summary

Tropical forests are crucial for global climate, but future warming brings high uncertainty. Prioritizing manipulative warming experiments and a network of studies is vital for improving climate models and predicting forest carbon balance.

Keywords:

CMIP5 carbon flux ecosystem processes global warming net ecosystem production temperature temperature threshold tipping point tropics warming manipulation

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Last Updated: Apr 18, 2026

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Area of Science:

Climate Science
Ecology
Earth System Science

Background:

Tropical forests significantly impact global carbon dioxide exchange with the atmosphere.
Imminent unprecedented warming in the tropics presents high uncertainty regarding forest responses.
Existing earth system models show substantial variability in tropical carbon projections.

Purpose of the Study:

To prioritize research approaches for resolving uncertainties in tropical forest function.
To improve the predictive capacity of earth system models for tropical regions.
To explore the benefits and trade-offs of large-scale manipulative field experiments.

Main Methods:

Analysis of Coupled Model Intercomparison Project Phase 5 (CMIP5) data.
Comprehensive review of current scientific literature on tropical forest responses.
Evaluation of large-scale manipulative field experiments, including warming studies.

Main Results:

Model variability in projected net ecosystem production is nearly three times greater in the tropics than other latitudes.
Manipulative warming experiments are crucial for accurate prediction of tropical forest carbon balance.
A network of comparable studies across environmental gradients is recommended.

Conclusions:

Long-term, single-factor warming experiments targeting key ecosystem components are advocated.
Hypothesis testing of underlying mechanisms and improved model parameterization are essential.
Multi-faceted research programs, considering logistical feasibility, are the most effective way forward to understand tropical forest responses to climate change.