Yesterday, the Intergovernmental Panel on Climate Change (IPCC), a United Nations scientific and intergovernmental body, published the summary for policymakers of its Global Warming of 1.5ºC (SR15) report. EGU representatives react to the findings.
On 26 September 2018, the European Geosciences Union (EGU) and the European Federation of Geologists (EFG) have jointly convened the ‘Horizon Geoscience: overcoming societal challenges, creating change’ dinner debate. Held at the Royal Academy of Belgium, the event has gathered nearly 80 policymakers from European institutions, media representatives, and geoscience professionals from different sectors and fields of expertise.
Bombing raids by Allied forces during the Second World War not only caused devastation on the ground but also sent shockwaves through Earth’s atmosphere which were detected at the edge of space, according to new research. University of Reading researchers have revealed the shockwaves produced by huge bombs dropped by Allied planes on European cities were big enough to weaken the electrified upper atmosphere – the ionosphere – above the UK, 1000km away. The results are published today in the European Geosciences Union journal Annales Geophysicae.
Targeted engineering projects to hold off glacier melting could slow down the collapse of ice sheets and limit sea-level rise, according to a new study published in the European Geosciences Union journal The Cryosphere. While an intervention similar in size to existing large civil engineering projects could only have a 30% chance of success, a larger project would have better odds of holding off ice-sheet collapse. But study authors Michael Wolovick and John Moore caution that reducing emissions still remains key to stopping climate change and its dramatic effects.
Northern forests enhanced their productivity during and before the 2010 Russian mega heatwave. We scrutinize this issue with a novel type of multivariate extreme event detection approach. Forests compensate for 54 % of the carbon losses in agricultural ecosystems due to vulnerable conditions in spring and better water management in summer. The findings highlight the importance of forests in mitigating climate change, while not alleviating the consequences of extreme events for food security.
Artificial water bodies are a major source of methane and an important contributor to flooded land greenhouse gas emissions. Past studies focussed on large water supply or hydropower reservoirs with small artificial water bodies (ponds) almost completely ignored. This regional study demonstrated ponds accounted for one-third of flooded land surface area and emitted over 1.6 million t CO2eq. yr−1(10 % of land use sector emissions). Ponds should be included in regional GHG inventories.
Model experiments show that changing the sense of Earth’s rotation has relatively little impact on the globally and zonally averaged energy budgets but leads to large shifts in continental climates and patterns of precipitation. The retrograde world is greener as the desert area shrinks. Deep water formation shifts from the North Atlantic to the North Pacific with subsequent changes in ocean overturning. Over large areas of the Indian Ocean, cyanobacteria dominate over bulk phytoplankton.
As computing and geophysical sensor components have become increasingly affordable over the past decade, it is now possible to build a cost-effective system for monitoring the Earth’s natural magnetic field variations, in particular for space weather events, e.g. aurorae. Sensors available to the general public are ~ 100 times less sensitive than scientific instruments but only 1/100th of the price. We demonstrate a system that allows schools to contribute to a genuine scientific sensor network.
This blog series presents bi-weekly interviews with outstanding innovators and researchers that bloomed the theory that revolutionised Earth Sciences — Plate Tectonics. Stay tuned to learn from their experience, discover which advices they share, find out where the newest challenges lie and much more! Meeting Dan McKenzie Prof. Dan McKenzie is one of the key actors empowering the Plate Tectonic Theory. He was Professor of Geophysics in Cambridge, until he retired in 2012. He is mainly known to have published …
The sixties brought us many moving moments: Woodstock, the civil rights movement, the moon landing… and the establishment of the plate tectonic theory. It is during the turbulent late sixties that scientists published groundbreaking manuscripts proving that pieces of the Earth’s outer layer are in a constant state of motion. Late 1967 to mid 1968 Dan McKenzie and Robert L. Parker, Jason Morgan and Xavier Le Pichon, amongst others, established that crustal motions on Earth approximate rigid body rotations on …
Ancient sand dunes exposed off a cliff face on the shoreline of Nova Scotia at the Islands Provincial Park. The juxtaposition of the high angled strata and flat lying layers above revels the drastic change in climate in Nova Scotia’s history; from vast sand dunes to a calm lake system, and presently the western coastline of the Atlantic Ocean. Description by Robert Wu, as it first appeared on imaggeo.egu.eu. Imaggeo is the EGU’s online open access geosciences image repository. All …