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EGU Outreach Committee seeking new members

  • EGU news
  • 30 January 2020

The EGU Outreach Committee promotes the Earth, planetary and space sciences and the activities of the EGU among scientists, the public, policymakers and all other interested individuals and organisations. The Committee seeks 3–4 new members to help further its programme.


Boreal forest fire in Canada

Air pollution in New York City linked to wildfires hundreds of miles away

  • Press release
  • 21 January 2020

A new study published in the European Geosciences Union (EGU) journal Atmospheric Chemistry and Physics shows that air pollutants from the smoke of fires from as far as Canada and the southeastern U.S. traveled hundreds of miles and several days to reach Connecticut and New York City, where it caused significant increases in pollution concentrations.




Highlight articles

SOIL

Variations in soil chemical and physical properties explain basin-wideAmazon forest soil carbon concentrations

Amazon soils hold as much carbon © as is contained in the vegetation. In this work we sampled soils across 8 different Amazonian countries to try to understand which soil properties control current Amazonian soil C concentrations. We confirm previous knowledge that highly developed soils hold C through clay content interactions but also show a previously unreported mechanism of soil C stabilization in the younger Amazonian soil types which hold C through aluminium organic matter interactions.


Earth System Dynamics

A multi-model analysis of teleconnected crop yield variability in a range of cropping systems

In this study, we analyse the impacts of three major climate oscillations on global crop production. Our results show that maize, rice, soybean, and wheat yields are influenced by climate oscillations to a wide extent and in several important crop-producing regions. We observe larger impacts if crops are rainfed or fully fertilized, while irrigation tends to mitigate the impacts. These results can potentially help to increase the resilience of the global food system to climate-related shocks.


Climate of the Past

Modal shift in North Atlantic seasonality during the last deglaciation

Here, mid-ocean seasonality is resolved through time, using differences in the oxygen isotope composition between individual shells of the commonly used (sub)polar planktonic foraminifera species in ocean-climate reconstruction, N. pachyderma and G. bulloides . Single-specimen isotope measurements during the deglacial period revealed a surprising bimodality, the cause of which was investigated.


Biogeosciences

Dimensions of marine phytoplankton diversity

Phytoplankton are an essential component of the marine food web and earth’s carbon cycle. We use observations, ecological theory and a unique trait-based ecosystem model to explain controls on patterns of marine phytoplankton biodiversity. We find that different dimensions of diversity (size classes, biogeochemical functional groups, thermal norms) are controlled by a disparate combination of mechanisms. This may explain why previous studies of phytoplankton diversity had conflicting results.


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As part of EGU’s steps to improve accessibility and inclusivity at the General Assembly, we have recently published a dedicated webpage with guidance for parents wanting to bring their children with them to Vienna. Whether you are looking for breastfeeding facilities, wondering about childcare whilst you are presenting or want to bring your 13 year old with you to the conference, this page has many of the answers to questions you may have. If your question isn’t answered on this …


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Tropical ecosystems are of major hydrological importance for regional and global climate systems and are characterized by greater energy inputs, higher rate of change and dynamics compared to other hydroclimatic regions. Nowadays, the anthropogenic influence in the climate crisis exerts enormous pressure on tropical hydrological systems. This growing pressure affects water quality and quantity, which in turn can undermine socio-economic and human development of a vulnerable population as described by the Sustainable Development Goals (SDGs). Despite the importance of these …


Science. Exploration. Survival.

A scientific career can be a struggle. This week Dave Stegman, Associate Professor at Scripps, draws parallels between being a scientist and being an Antarctic explorer. He dangled in the crevasse, unable to touch the sides; the abyss beneath was hundreds of feet deep; the rope he was suspended from was 14 feet long, connected above to the sledge he had been hauling. Was it luck when his sledge happened to get wedged at the top of the crevasse instead …