¿Son los Pirineos una barrera real para el transporte atmosférico de polen?

Los resultados del estudio llevado a cabo por Jordina Belmonte y Concepción de Linares, investigadoras expertas en botánica de la UAB, constatan que el polen de abedul, una de las especies principales de plantas que causan alergia en Europa Central y del Norte.

Ice age thermostat prevented extreme climate cooling

During the ice ages, an unidentified regulatory mechanism prevented atmospheric CO2 concentrations from falling below a level that could have led to runaway cooling, reports a study conducted by researchers of the ICTA-UAB and published online in Nature Geoscience this week.

The New Theory of Economic “Agrowth” Contributes to the Viability of Climate Policies

 ICTA-UAB researcher Jeroen van den Bergh publishes in Nature Climate Change a study in which he proposes a new economic theory compatible with the fight against climate change.

Map Commemorating Women’s Resistance to Extractivism and Defense of Life and Territory in Latin America

A map created by researchers at the Institute of Environmental Science and Technology of the Universitat Autònoma de Barcelona (ICTA-UAB), the Latin-American Network of Women Defending Social and Environmental Rights and the Colombian NGO CENSAT-Agua Viva Friends of the Earth Colombia makes visible the struggles of women in Latin America against mining and in defense of life.

Es preveuen alts nivells de pol·len per a aquesta primavera

Investigadors de la Xarxa Aerobiològica de Catalunya de l’ICTA-UAB han presentat avui les previsions dels nivells de pol·len i espores a l’atmosfera a Catalunya per a la primavera i l’estiu.

The Azores Islands were inhabited a century and a half before the Portuguese colonization, according to the fossil pollen found in a...

• Research involving the ICTA-UAB finds pollen of rye and other cereals in the sediments of Lago Azul and redefines the timing of human occupation of the Portuguese archipelago.

European Project to Analyse the Effects of Waste Generated by Tourism on Mediterranean Islands

An European study involving the Institute of Environmental Science and Technology of the Universitat Autònoma e Barcelona will address and propose solutions to the effects of the increase of waste generated by tourism on Mediterranean islands during the summer season.

El ICTA-UAB volverá Locos por la Naturaleza a 27 estudiantes de bachillerato

Un total de 27 estudiantes de bachillerato participan en la tercera edición del programa Locos por la Naturaleza que ofrece el Institut de Ciència i Tecnologia Ambientals de la Universitat Autònoma de Barcelona (ICTA-UAB) con la voluntad de promover el talento científico entre los jóvenes potenciando el conocimiento del medio natural y poniéndolos en contacto con los principales investigadores en la materia.

More Urban Green Needed in Barcelona to Have Positive Effects on Environmental Quality and Wellness

A PhD dissertation by Francesc Baró, from ICTA-UAB, quantifies and maps the benefits of urban and periurban green in Barcelona such as the improvement of air quality, climate change mitigation and opportunities for outdoor recreation.

New ICTA-UAB 'Welcome Guide'

The new ICTA-UAB 'Welcome Guide' it is at your disposal now. With this document, we aim to help you discover the basics of the PhD programme, ICTA-UAB’s structure, etc.

Social Relations, Success in Hunting and Good Health, Sources of Happiness for Indigenous People

Rural and indigenous people from the Global South push absolute income into the background as source of wellbeing.

Treatment plants reduce contamination of heavy metals around Barcelona's coastline

The study, published in Science of the Total Environment, shows that contamination of heavy metals experienced a very important growth between the 1930s and 1980s, while a drastic descent in levels occurred in the 1990s.

Increase in motorcycles converts Barcelona into the European city with the highest number of motorbikes per inhabitant

A study by researchers of the ICTA-UAB and the UAB Department of Geography assesses the rise of motorcycles compared with the drop in cars in Barcelona in the past ten years.

More than One-Third of the Population Would Stop Economic Growth to Achieve Sustainability

A study by researchers of the Institut of Environmental Science and Technology (ICTA-UAB) assesses Spanish public opinion on economic growth, the environment and prosperity.

ICTA-UAB and ISGlobal Researchers Denounce Lack of Studies on the Harmful Health Effects of Oil Spills

A project led by ICTA-UAB, ISGlobal and the UAB Faculty of Veterinary Medicine in the Peruvian Amazon analyses the health effects of oil spills among people living close to oil extraction areas in developing countries.

Humans have caused climate change for 180 years

An international research project involving ICTA-UAB researcher P. Graham Mortyn has found human activity has been causing global warming for almost two centuries, proving human-induced climate change is not just a 20th century phenomenon.

Do Greener Cities Become More Unjust?

A new research project led by ICTA-UAB researcher Isabelle Anguelovski and funded by the European Union will assess the “green gentrification” process by which the creation of green urban amenities tends to attract the higher social classes and excludes the most vulnerable groups.

The ICTA-UAB Will Assess, in Collaboration with EU Staff, the Effectiveness of EU Sustainability Policies

The EU Project MAGIC (H2020) coordinated by the Institut de Ciència i Tecnologia Ambientals de la Universitat Autònoma de Barcelona (ICTA-UAB) has the goal to study and develop new strategies for a better use of science for governance.

ICTA-UAB receives María de Maeztu Excellence Award

The Institute of Environmental Science and Technology has received the award as a "María de Maeztu" Unit of Excellence 2015 from the Spanish Ministry of Economy and Competitiveness (MINECO).
Seminaris
Seminar- Carbon storage and its release from the glacial ocean: leaky pumps and seesaws. By Prof. Luke Skinner

Date: 2017-03-17

Title: Carbon storage and its release from the glacial ocean: leaky pumps and seesaws

Prof. Luke Skinner, University of Cambridge


Date: Friday, March 17, 2017
Time: 11:30h
Venue: Room Z/023

It has long been postulated that the key contributor to lower atmospheric CO2 during past glacial periods was a more efficient marine biological pump, which sequestered more of the ocean’s carbon pool as respired carbon deep in the ocean’s interior.  A further long-standing question is whether the putative increase in pump efficiency was achieved primarily by an increase in the ‘strength’ of the soft tissue pump (overall, or relative to the carbonate pump), or a reduction in its ‘leakiness’. The former would implicate a major role for changing nutrient supply to the ocean, in particular from atmospheric sources (e.g. dust-driven ‘iron fertilization’).  The latter would implicate the ocean circulation and ocean-atmosphere gas exchange processes instead. However, these two regulators of biological pump efficiency are not mutually exclusive: both can operate together, and to greater effect. 

This seminar consists of two parts: the first focuses on the causes of respired carbon sequestration in the ocean interior at the Last Glacial Maximum (LGM), while the second focuses on the release of this carbon to the atmosphere during deglaciation.  In both instances, the role of the ocean circulation is emphasised, though not to the exclusion of other contributing mechanisms. Emerging radiocarbon data thus demonstrate quite clearly that the ocean was more poorly ‘ventilated’ at the Last Glacial Maximum, perhaps by the equivalent of ~700 14Cyrs on average. A significant impact on atmospheric CO2 is implied, and supported by new oxygenation and carbonate ion reconstructions, as well as simple scaling arguments and box-model experiments.  During deglaciation, globally distributed records of radiocarbon, stable isotopes and oxygenation track the release of previously sequestered respired carbon back into the atmosphere. These records paint a picture of two ‘ventilation seesaws’ operating in the North Pacific and Southern Ocean, and apparently triggered via the North Atlantic.  Together, and via their connection to opposing ventilation changes in the North Atlantic, these seesaws might help to explain both a ‘fast but limted’ and a ‘slow but strong’ component to deglacial atmospheric CO2 rise.

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