Distributed Biological Observatory Region 1: Physics, chemistry and plankton in the northern Bering Sea

Historically, the northern Bering Sea has been largely ice covered for 5–6 months each year. From 1980 to 2014, there was considerable variability in the timing of ice arrival and retreat, but there was no significant trend in these variables. During three of the last four years (2014–2015, 2016–2017, 2017–2018) ice has arrived later and retreated earlier, resulting in a shorter ice season. These changes may be related to the delayed arrival of...