EGU logo

European Geosciences Union

www.egu.eu

EGU

News


EGU flags

EGU’s response to potential changes to the European Research Council

  • EGU news
  • 11 February 2019

A scheduled re-organisation of the European Commission’s Research and Innovation Directorate General has raised concerns about its potential impact on the European Research Council (ERC). The EGU strongly supports the unique ability that the ERC currently has to respond directly and independently to the needs of the scientific community.


soil.png

SOIL indexed in the Science Citation Index Expanded

  • EGU news
  • 31 January 2019

We are proud to announce that the EGU and Copernicus journal SOIL has been accepted by Clarivate Analytics to be indexed in the Science Citation Index Expanded (SCIE), the Journal Citation Reports (JCR), and Current Contents/Agriculture, Biology & Environmental Sciences.




Highlight articles

Climate of the Past

Pleistocene glacial history of the New Zealand subantarctic islands

The New Zealand subantarctic islands, in the Pacific sector of the Southern Ocean, provide valuable records of past environmental change. We find that the Auckland Islands hosted a small ice cap around 384 000 years ago, but that there was little glaciation during the Last Glacial Maximum, around 21 000 years ago, in contrast to mainland New Zealand. This shows that the climate here is susceptible to changes in regional factors such as sea-ice expanse and the position of ocean fronts.


Atmospheric Chemistry and Physics

Trends in global tropospheric ozone inferred from a composite record of TOMS/OMI/MLS/OMPS satellite measurements and the MERRA-2 GMI simulation

Both a 38-year merged satellite record of tropospheric ozone from TOMS/OMI/MLS/OMPS and a MERRA-2 GMI model simulation show large increases of 6–7 Dobson units from the Near East to India–East Asia and eastward over the Pacific. These increases in tropospheric ozone are attributed to increases in pollution over the region over the last several decades. Secondary 38-year increases of 4–5 Dobson units with both GMI model and satellite measurements occur over central African–tropical Atlantic.


Hydrology and Earth System Sciences

Attributing the 2017 Bangladesh floods from meteorological and hydrological perspectives

In August 2017 Bangladesh faced one of its worst river flooding events in recent history. For the large Brahmaputra basin, using precipitation alone as a proxy for flooding might not be appropriate. In this paper we explicitly test this assumption by performing an attribution of both precipitation and discharge as a flooding-related measure to climate change. We find the change in risk to be of similar order of magnitude (between 1 and 2) for both the meteorological and hydrological approach.


Hydrology and Earth System Sciences

Effects of univariate and multivariate bias correction on hydrological impact projections in alpine catchments

Several multivariate bias correction methods have been developed recently, but only a few studies have tested the effect of multivariate bias correction on hydrological impact projections. This study shows that incorporating or ignoring inter-variable relations between air temperature and precipitation can have a notable effect on the projected snowfall fraction. The effect translated to considerable consequences for the glacio-hydrological responses and streamflow components of the catchments.


Latest posts from EGU blogs

Rainfall related geohazards: floods, landslides and mudslides in Rio - A dangerous combination of nature and human-related factors

Rainfall related geohazards: floods, landslides and mudslides in Rio - A dangerous combination of nature and human-related factors

Rainfall-related geohazards in Brazil’s poorer, mountainous city margins could be mitigated using better urban planning and communication. Our own Brazilian blogger Bárbara Zambelli Azevedo explores the problem and possible solutions. I come from Brazil, a country well-known for its beautiful landscapes, football and carnival. Ok, some stereotypes are true, indeed. Situated in the middle of the South American tectonic plate and away from geohazards such as earthquakes, volcanoes and tsunamis, this tropical country may seem like paradise to some. However, …


Imaggeo on Mondays: Northern lights in northern Norway

Imaggeo on Mondays: Northern lights in northern Norway

Northern lights in Tromsø, displaying the collisions between electrically charged particles from the sun which penetrate the earth’s magnetic shield and strike atoms and molecules in our atmosphere. Collisions excite the atoms causing electrons to move to higher-energy orbits, further away from the nucleus. When electrons move back to lower-energy orbits, they release particles of light called photons which form the aurora. The green color is produced by collisions with oxygen, purple colors are produced by collisions with nitrogen. Description …


Of Karst! – short episodes about karst

Of Karst! – short episodes about karst

Post by Andreas Hartmann, Assistant Professor in Hydrological Modeling and Water Resources at the University of Freiburg. Episode 4 – Karst Groundwater: quick and slow at the same time? We often associate groundwater with large water storage and very slow water movement, for instance compared to rivers. But is it possible that groundwater flow can be as quick as stream flow? Of karst, it is possible! When chemical weathering is able dissolve carbonate rock, cracks and fissures may grow to …