Search

Shelf seas play an important role in the global carbon cycle, absorbing atmospheric carbon dioxide (CO2) and exporting carbon (C) to the open ocean and sediments. The magnitude of these processes is poorly constrained, because observations are typically interpolated over multiple years. Here, we used 298500 observations of CO2 fugacity (fCO2) from a single year (2015), to estimate the net influx of atmospheric CO2 as 26.2 ± 4.7 Tg C yr−1 over the open NW European shelf. CO2 influx from the atmosphere was dominated by influx during winter as a consequence of high winds, despite a smaller, thermally-driven, air-sea fCO2 gradient compared to the larger, biologically-driven summer gradient. In order to understand this climate regulation service, we constructed a carbon-budget supplemented by data from the literature, where the NW European shelf is treated as a box with carbon entering and leaving the box. This budget showed that net C-burial was a small sink of 1.3 ± 3.1 Tg C yr−1, while CO2 efflux from estuaries to the atmosphere, removed the majority of river C-inputs. In contrast, the input from the Baltic Sea likely contributes to net export via the continental shelf pump and advection (34.4 ± 6.0 Tg C yr−1). [ABSTRACT FROM AUTHOR]

The article examine the decisions made during the uncertainty of the four-day time span from September 11, 2001, when the U.S. was under terrorist attack, to September 14, 2001. Topics discussed include biases and heuristics that affect decision-making in the immediate aftermath of the attack; authorization for the use of military force during the attacks; and need of uniform policies for reacting to acts of terror in order to prevent bias.

The article offers information on the complicated nature of time for analyzing the humans experience related to the passage of time in context to the U.S. legal system. It examines the frictional effect between the pace of twenty-first century society and the pace of the twenty-first century legal system determining the maintain stability and legitimacy of the legal system under the due process of the U.S. law.