European Geosciences Union
www.egu.eu
The website of the EGU/Copernicus open-access journal Solid Earth was relaunched with a new design during the EGU General Assembly last week. In addition, the former chief executive editor Fabrizio Storti stepped down. His successor is CharLotte Krawczyk who has been an executive editor since 2015.
European-based early career scientists (ECS) are invited to apply for the EGU’s ECS Policy Competition. The competition is open to all undergraduate or postgraduate (Masters/PhD) students and scientists who have received their highest degree (BSc, MSc, or PhD) within the past seven years. The winner of the competition will receive a ticket to a Dinner Debate in Brussels on the evening of September 26, 2018.
In 2008, the EGU and Copernicus launched a new journal dedicated specifically to atmospheric measurement techniques. The EGU Publications Committee and the co-editors-in-chief will celebrate the 10th anniversary of AMT during an evening reception, open to all, at the EGU General Assembly 2018 in Vienna, taking place at the PICO spot 5a on Tuesday, 10 April at 19:00.
This year, for the first time, the EGU is organising an event for the wider public in Vienna during the EGU General Assembly. The EGU Public Lecture provides insight into a topic in the Earth, planetary and space sciences of interest to a broad audience, aiming to bridge the gap between the scientists at the Austria Center Vienna and the local Viennese community.
The EGU meeting, the largest geoscience conference in Europe, attracts over 14,000 attendees to Vienna, Austria every year. With such a large number of participants, many flying to the Austrian capital to attend, the meeting has a large environmental impact, which the EGU is attempting to reduce with a series of measures this year.
Detecting trends in short data sets of stratospheric molecules is difficult because of variability due to dynamical fluctuations. We suggest that one way around this difficulty is using the measurements of one molecule to remove dynamical variability from the measurements of another molecule. We illustrate this using Aura MLS measurements of N2O to help us sort out issues in the determination of trends in HCl. This shows that HCl is decreasing throughout the middle stratosphere as expected.
Synergistic effects between SOA formation and SO2 oxidation through Criegee chemistry and reactive uptake by organic peroxides were observed. The relative importance of these two pathways (Criegee vs. peroxide) varies with relative humidity. The latter SO2 loss mechanism to organic peroxides in SOA has not previously been identified. Our results suggest a new pathway of atmospheric SO2 oxidation, which may contribute to the missing mechanisms of high-sulfate production in the polluted areas.
Coupled climate–ice sheet simulations have been growing in popularity in recent years. Experiments of this type are however challenging as ice sheets evolve over multi-millennial timescales, which is beyond the practical integration limit of most Earth system models. A common method to increase model throughput is to trade resolution for computational efficiency (compromise accuracy for speed). Here we analyze how the resolution of an atmospheric general circulation model (AGCM) influences the simulation quality in a stand-alone ice sheet model. Four identical AGCM simulations of the Last Glacial Maximum (LGM) were run at different horizontal resolutions: T85 (1.4∘), T42 (2.8∘), T31 (3.8∘), and T21 (5.6∘). These simulations were subsequently used as forcing of an ice sheet model.
Palaeoclimate reconstructions from deep-sea sediment archives provide valuable insight into past rapid climate change, but only a small proportion of the ocean is suitable for such reconstructions using the existing state of the art, i.e. the age–depth approach. We use dual radiocarbon (14C) and stable isotope analysis on single foraminifera to bypass the long-standing age–depth approach, thus facilitating past ocean chemistry reconstructions from vast, previously untapped ocean areas.
In today’s post, Bárbara Zambelli, considers how we can transition business models towards a more sustainable way of living, manufacturing and consuming. As I mentioned before in my post about Urban Geology and Underground Urbanisation, according to the UN report, the current world population of 7.6 billion is expected to reach 8.6 billion in 2030 and 9.8 billion in 2050. In addition, the percentage of the world’s population living in urban areas is growing steadily. In this scenario, it is …
The action of glaciers combined with the structure of the rock to form this little platform, probably once a small lake enclosed between a moraine at the mountain side and the ice in the valley. Now it has become a green haven in the mountain landscape, a perfect place for an alp. In the Alps, stratus clouds opening up on autumn mornings often create gorgeous light display. That day, some of the first light landed on this exact spot, while …
The Arctic sea ice is disappearing. There is no debate anymore. The problem is, we have so far been unable to model this disappearance correctly. And without correct simulations, we cannot project when the Arctic will become ice free. In this blog post, we explain why we want to know this in the first place, and present a fresh early-online release paper by Ingrid Onarheim and colleagues in Bergen, Norway, which highlights (one of) the reason(s) why our modelling attempts …
