Global Food Security

Research published in Science has highlighted the potentially deleterious effects of climate change on global food security. As defined by the United Nations’ Food and Agriculture Organization, food security has a number of components.  These include food availability, access and utilization…

Robust direct effect of carbon dioxide on tropical circulation and regional precipitation

Global warming simulations suggest that wet regions (where precipitation exceeds evaporation) will become wetter and dry regions drier by the end of the 21st century (e.g., Held and Soden 2006), with larger contrasts expected between dry and wet seasons (Chou et al., 2013). This ‘rich-get-richer’ behavior is consistent with a large increase in the moisture content of atmosphere, leading to enhanced horizontal moisture fluxes across regions.

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