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Approximately 15 million km2of the Southern Ocean is seasonally ice covered, yet the processes affecting carbon cycling and gas exchange in this climatically important region remain inadequately understood. Here, 3 years of dissolved inorganic carbon (DIC) measurements and carbon dioxide (CO2) fluxes from Ryder Bay on the west Antarctic Peninsula (WAP) are presented. During spring and summer, primary production in the surface ocean promotes atmospheric CO2uptake. In winter, higher DIC, caused by net heterotrophy and vertical mixing with Circumpolar Deep Water, results in outgassing of CO2from the ocean. Ryder Bay is found to be a net sink of atmospheric CO2of 0.90–1.39 mol Cm−2yr−1(average of 3 years). Seasonal sea ice cover modifies the net annual CO2uptake, but its effect on gas exchange remains poorly constrained. A reduction in sea ice on the WAP shelf may reduce the strength of the oceanic CO2sink in this region. The water column in Ryder Bay is a net, annual sink of atmospheric CO2Seasonal sea ice modifies the strength of the ocean CO2sink in Ryder BayLarge uncertainty remains regarding the effect of sea ice on gas exchange

Presents an untitled poem excerpted from "Interruptions in Latitude," by Gareth Lee.

Presents the poem "Suflet Pereche," by Gareth Lee.

Climate change and human activities are expected to have a major impact on the structure and functioning of marine ecosystems and the biogeochemical cycles they mediate in the coming years. Here we describe time series measurements of biogenic bromocarbons (CHBr3and CH2Br2) collected in coastal waters of the western Antarctic Peninsula which is one of the world's most rapidly changing marine environments. Our measurements spanned a period of changing sea‐ice dynamics and phytoplankton community structure driven by climatic forcing. Specifically, the occurrence of high chlorophyllaconcentrations (≥5 μg L−1) and dominance of the largest phytoplankton size fraction (≥20 μm) indicating diatom bloom conditions was reduced following winter periods with a relatively short winter sea‐ice duration (<50 days). While large inter‐annual variability in seawater CHBr3concentrations was observed alongside these changes the same was not found for CH2Br2which is surprising given their proposed common source. Seawater CHBr3concentrations were found to be significantly higher (122 [14.7–580] pmol L−1, P < 0.0001, Mann‐Whitney) in samples collected in diatom bloom compared to non‐bloom waters (42.9 [12.0–126] pmol L−1). A comparison of sea‐to‐air flux rates suggests that a switch from diatom bloom to non‐bloom conditions results in a factor of 3–4 decrease in average CHBr3sea‐to‐air emission rates which will reduce the supply of biogenic bromine to the atmosphere. Our calculations suggest that this will drive a decrease in inorganic bromine levels in the troposphere by a factor of 2–3 outside of ozone depletion events with potentially important implications for ozone cycling and dimethyl sulphide oxidation. This work has captured and crucially quantified the impact of a climate‐induced change in a marine ecosystem on ocean‐atmosphere biogeochemistry. Climate‐induced changes to marine ecosystems alter bromocarbon emissionsChanges to marine ecosystems can alter atmospheric composition and chemistryIndividual trace gases respond differently to altered marine ecosystem structure

Presents the prose poem "Nebraska," by Gareth Lee. First Line: We must back up and recover lost road; we must rearrange our confusion;... Last Line: ...this seat; this ground; these yards; this state.

The article presents the poem "From Interruptions in Latitude," by Gareth Lee. First Line: I flatter his wool with a snowball. Hypotheticallyspeaking. Last Line: and watching the planets heave themselves throughspace.

Presents the poem "Indemnity," by Gareth Lee. First Line: Silence, this mist, excites more than fades. Last Line: cut to gin, cue orchestra—me in transit.

Presents the poem "After Yelling "Cut!" for All the Wrong Reasons," by Gareth Lee. First Line: This chimera, this trick, whose hair has melted: Last Line: telekinesis, Raise my head. Night malfunctions.

Presents the poem "Zama," by Gareth Lee.