Convergence of atmospheric and North Atlantic CO2 trends on multidecadal timescales

The oceans’ carbon uptake substantially reduces the rate of anthropogenic carbon accumulation in the atmosphere1, and thus slows global climate change. Some diagnoses of trends in ocean carbon uptake have suggested a significant weakening in recent years2-8, while others conclude that decadal variability confounds detection of long-term trends9-11. Here, we study trends in observed surface ocean partial pressure of CO2 (pCO2) in three gyre-scale biomes of the North Atlantic, considering decadal to multidecadal timescales between 1981 and 2009. Trends on decadal timescales are of variable magnitudes and depend sensitively on the precise choice of years. As more years are considered, oceanic pCO2 trends begin to converge to the trend in atmospheric pCO2. North of 30oN, it takes 25 years for the influence of decadal-timescale climate variability to be overcome by a long-term trend that is consistent with the accumulation of anthropogenic carbon. In the permanently stratified subtropical gyre, warming has recently become a significant contributor to the observed increase in oceanic pCO2. This warming, previously attributed to both a multidecadal climate oscillation and anthropogenic climate forcing12,13, is beginning to reduce ocean carbon uptake

Creative soups for the soul: Stories of community recovery in Talca, Chile, after the 2010 earthquake

This study, conducted in Talca, Chile, a year and a half after a massive natural disaster, focused on creative thinking and art production as manifestations of resilience. Purposive sampling was used to recruit participants through community leaders and programs. Ten survivors whose houses were damaged or destroyed during the 2010 earthquake were willing to participate in semi-structured interviews that included verbal narratives and an art response. Systematic analysis illuminated conscious and latent psychological content. Three overarching themes were identified as central to survivors\u27 recovery process and were then contrasted with data from New Orleans after hurricane Katrina, exploring universality and contextual factors in post disasters\u27 creativity and resilience. Specifically, in Talca, the creation of craft for sale, instead of art making for emotional expression in New Orleans, was observed; idealism and future-oriented thinking were heightened in Talca, while humor and spirituality seemed more pronounced in New Orleans; and connections to natural surroundings in Talca were juxtaposed with New Orleans\u27 residents\u27 strong neighborhood affiliations and cultural festivities

Global surface-ocean pCO2 and sea–air CO2 flux variability from an observation-driven ocean mixed-layer scheme

A temporally and spatially resolved estimate of the global surface-ocean CO₂ partial pressure field and the sea–air CO₂ flux is presented, obtained by fitting a simple data-driven diagnostic model of ocean mixed-layer biogeochemistry to surface-ocean CO₂ partial pressure data from the SOCAT v1.5 database. Results include seasonal, interannual, and short-term (daily) variations. In most regions, estimated seasonality is well constrained from the data, and compares well to the widely used monthly climatology by Takahashi et al. (2009). Comparison to independent data tentatively supports the slightly higher seasonal variations in our estimates in some areas. We also fitted the diagnostic model to atmospheric CO₂ data. The results of this are less robust, but in those areas where atmospheric signals are not strongly influenced by land flux variability, their seasonality is nevertheless consistent with the results based on surface-ocean data. From a comparison with an independent seasonal climatology of surface-ocean nutrient concentration, the diagnostic model is shown to capture relevant surface-ocean biogeochemical processes reasonably well. Estimated interannual variations will be presented and discussed in a companion paper

Considering intersections of race and gender in interventions that address US men’s health disparities

http://dx.doi.org/10.1016/j.puhe.2011.04.01