Phys.org October 10, 2024 Rapid warming and increasing disturbances in high-latitude regions have caused extensive vegetation shifts and uncertainty in future carbon budgets. Better predictions of vegetation dynamics and functions require characterizing resilience, which indicates the capability of an ecosystem to recover from perturbations. A team of researchers in the US (The Ohio State University, University of Utah, Northern Arizona University) used temporal autocorrelation of remotely sensed greenness to quantify time-varying vegetation resilience during 2000–2019 across northwestern North American Arctic-boreal ecosystems. They found that vegetation resilience significantly decreased in southern boreal forests, including forests showing greening trends, while it increased […]
Tag Archives: Carbon budget
First-of-its-kind analysis reveals importance of storms in air–sea carbon exchange in Southern Ocean
Phys.org August 14, 2024 The strength and variability of the Southern Ocean carbon sink is a significant source of uncertainty in the global carbon budget. One barrier to reconciling observations and models is understanding how synoptic weather patterns modulate air-sea carbon exchange. An international team of researchers (USA – Monterey Bay Aquarium Research Institute, NCAR, Pacific Marine Environmental Laboratory, University of Arizona, Canada, South Africa) identified and tracked storms using atmospheric sea level pressure fields from reanalysis data to assess the role that storms play in driving air-sea CO2 exchange. They examined the main drivers of CO2 fluxes under storm […]