High Climatic Response of High-Latitude Forests

Atmospheric CO2 rises and falls with the northern hemisphere winter and summer, respectively, and the amplitude of that seasonality is increasing. Is the vast boreal forest contributing to this trend, and, if so, why? Most models assume that increased CO2 stimulates photosynthesis, increased temperature stimulates respiration, and the difference between the two determines […]

Sediment Layers Pinpoint Periods of Climatic Change

Just a few tens of thousands of years ago—a blink in geologic time—ice sheets covered a wide swath of the planet. Researchers have now determined precisely the cadence at which one of those ice masses retreated and disgorged icebergs into the Pacific Ocean, events that likely triggered substantial climatic changes. Extinct Ice The […]