European Geosciences Union
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At 12:30 pm on 21 January 2020, the European Geosciences Union (EGU) will be hosting its first-ever webinar, which will focus on the union’s open access journals.
The December 2019 edition of the EGU email newsletter, the monthly information service for Union members, is now available.
The 2020 General Assembly of the European Geosciences Union (EGU) provides an opportunity for journalists to find out about the latest research in the Earth, planetary and space sciences and to talk to researchers from all over the world. The meeting, the largest geosciences conference in Europe, is anticipated to bring together more than 15,000 scientists. It runs from 3 to 8 May at the Austria Center Vienna, in Vienna, Austria.
Concentrations of methane, a greenhouse gas about 28 times more potent than carbon dioxide, have risen steadily in Earth’s atmosphere since 2007. Although several potential explanations, including an increase in methane emissions from the tropics, could account for this upsurge, due to a lack of regional data scientists have been unable to pinpoint the source. Now a study published in the European Geosciences Union (EGU) journal Atmospheric Chemistry and Physics uses satellite data to determine that one-third of the global increase originates in Africa’s tropics.
The EGU is Europe’s premier geosciences union, dedicated to the pursuit of excellence in the Earth, planetary, and space sciences for the benefit of humanity, worldwide. Membership is open to individuals who subscribe to the objectives of the EGU and who are professionally engaged in or associated with either the geosciences, planetary and space sciences, or related studies. Membership is affordable and provides a number of benefits, including eligibility to present your research at the annual EGU General Assembly and substantially reduced registrations rates to the meeting.
Here we explore ancient climate transitions from warm periods to ice ages and from ice ages to warm periods of the last 400 000 years. The changeovers from warm to ice age conditions are slower than those from ice age to warm conditions. We propose the presence of strong negative sea–ice feedbacks may be responsible for slowing the transition from warm to full ice age conditions. By improving understanding of past abrupt changes, we may have improved knowledge of future system behavior.
This paper presents a new H 2 O/HDO data set from TROPOMI short-wave infrared measurements. It is validated against recent ground-based FTIR measurements from the TCCON network. A bias in TCCON HDO (which is not verified) is corrected by fitting a correction factor for the HDO column to match MUSICA δD for common observations. The use of the new TROPOMI data set is demonstrated using a case study of a blocking anticyclone over Europe in July 2018.
We propose a new exploration of the concept of “spontaneous” lithospheric collapse at a transform fault (TF) by performing a large study of conditions allowing instability of the thicker plate using 2-D thermomechanical simulations. Spontaneous subduction is modelled only if extreme mechanical conditions are assumed. We conclude that spontaneous collapse of the thick older plate at a TF evolving into mature subduction is an unlikely process of subduction initiation at modern Earth conditions.
Terrestrial ion transport and total escape are synthesized, with stress on the high-latitude polar region and the inner magnetosphere where Custer significantly improved knowledge. After estimating the outflow flux and destinations, complicated ion dynamics in the inner magnetosphere was classified and summarized, through which more than half the O+ is finally lost to space. Together with direct escapes, total O+ escape is high enough to influence the evolution of the biosphere.
Last week, we learned about the dramatic fate of the Hochjochferner, which has strongly retreated in the past years due to climate change. It represented just one example amongst many alpine glaciers, which are following a similar path. But the Alps are not the only mountain range in which glaciers are retreating. Another example closeby is the Caucasus region. Its glaciers are also shrinking at a very fast pace… The retreat of Georgian glaciers The dramatic decline of Georgian glaciers …
Did you know that the EGU has a public engagement grant scheme? We’ll be awarding three EGU members with 1500€ to help them develop an outreach project that aims to raise awareness of geosciences outside the scientific community. The 2020 call for applications is currently open. In this GeoTalk interview, Olivia Trani talks to Astrid Harjung, Laura Coulson, Romana Hödl and Katrin Attermeyer, researchers at WasserCluster Lunz and the University of Vienna who won an EGU Public Engagement Grant in …
Australian wildfires have burned an impressively large surface and caused the death of at least 24 citizens as well as of numerous animals. This immense disaster raises questions about its linkage with climate change, the possibility of controlling these events and the future of Australian wildlife ecosystems. While the first question will be addressed by soon to come attribution studies, and the last one by ecobiologists, here we focus on the second one: how fires can get completely out of …
