Browse Journal Highlights

Highlights include enriched and related content of notable journal articles presented on Eos org AGU org AGU On Demand and in AGU journals

New statistical model emphasizes role of spatial correlation

Editor’s Highlight—   This paper presents a statistical methodology to assess uncertainties in ocean chlorophyll trends. It provides strong evidence that significant differences exist in regional and global trends when compared with linear temporal models that have been widely used in other work. This.... more

Impacts of ENSO on air-sea oxygen exchange: observations and mechanisms

Editors’ Highlights­­— The exchange of oxygen between the air and sea reflects the physical and biogeochemical processes of the ocean and their interactions. Our understanding of the responses of the above-ocean processes to climate change could be improved with insights into the inter-annual variability.... more

Seasonal and spatial variability in northern Gulf of Alaska surface-water iron concentrations driven by shelf sediment resuspension, glacial meltwater, a Yakutat eddy, and dust

Editors' Highlight— This paper examines the transfer of iron (Fe) from shelf to ocean in a high latitude environment. It is based on data collected from three research cruises in the northern Gulf of Alaska along a transect from the mouth of the Copper River to beyond the shelf break. The authors discuss.... more

Strong biotic influences on regional patterns of climate regulation services

Editor's Highlights—   A number of biogeochemical fluxes – from carbon sequestration to water balance – are also ecosystem services. This paper links the two in an assessment of the factors that influence ecosystems services provided by temperate forests. Specifically, the authors perform a statistical.... more

What’s the Average Methane Isotope Signature in Arctic Wetlands?

Terri Cook, Freelance Writer

From Research Spotlights— Aircraft measurements confirm that methane emissions from northern European wetlands exhibit a uniform regional carbon isotopic signature, despite considerable ground-level heterogeneity.  Although methane (CH4) is a potent greenhouse gas, the relative contributions.... more

Why Is There So Much Carbon Dioxide in Rivers?

Sarah Witman, Freelance Writer

From Research Spotlights— Observations of carbon dioxide oversaturation in the freshwater of the world led scientists to study its underlying causes at more than 100 field locations across the nation. Studies have shown that many of the world’s freshwater rivers and streams are oversaturated.... more

High Arctic Emissions of a Strong Greenhouse Gas

Sarah Stanley, Freelance Writer

From Research Spotlights— Isotope data bring scientists one step closer to revealing the microbial processes behind nitrous oxide emission in the tundra.  Nitrous oxide, often called “laughing gas,” is perhaps most famous for its use as an anesthetic. However, it is also a powerful greenhouse.... more

Carbon balance in subglacial hydrochemical systems

Editors’ Highlight—This paper addresses a hotly-debated topic as to whether rock weathering below glaciers is a critical and long-term source of atmospheric CO2 consumption or whether some of the CO2 consumed may be from decomposing organic material. The authors compared a model of subglacial pH and.... more

What Proportion of River Nutrients Reach the Open Sea?

Terri Cook, Freelance Writer

From Research Spotlights—Results of the first geographically based estimates of river nutrient supply indicate that 75% of dissolved nitrogen and 80% of phosphorous reach the open ocean. Although it is widely recognized that the world’s rivers deliver substantial amounts of dissolved nitrogen.... more