Doris Virág

• Master of Arts in Business; Master of Science
• BOKU University

The widely heralded decarbonization of economies is a significant intervention in countries' societal metabolism, which eliminates the use of fossil fuels but also requires renewing societal stocks such as buildings, vehicles, and power plants, which in turn requires materials and energy. The circular economy (CE) shifts a country's metabolism towa...

Understanding the size and spatial distribution of material stocks is crucial for sustainable resource management and climate change mitigation. This study presents high-resolution maps of buildings and mobility infrastructure stocks for the United Kingdom (UK) and the Republic of Ireland (IRL) at 10 m, combining satellite-based Earth observations,...

Built structures increasingly dominate the Earth’s landscapes; their surging mass is currently overtaking global biomass. We here assess built structures in the conterminous US by quantifying the mass of 14 stock-building materials in eight building types and nine types of mobility infrastructures. Our high-resolution maps reveal that built structu...

The circular economy is a major topic in import-dependant nations like Japan, China or the European Union, where supply security, strengthening domestic value chains and greening economic growth are key concerns. In contrast, extractive economies, mostly in the Global South, provide resources to the world market and thus exhibit inherently linear r...

Roads and rail-based mobility infrastructures are the basis for mobility services and underpin several Sustainable Development Goals, but also induce material use and greenhouse gas emissions. To date, no stock-flow consistent study has assessed globally accumulated stocks of mobility infrastructures, associated material flows and emissions, and th...

High-resolution maps of material stocks in buildings and infrastructures are of key importance for studies of societal resource use (social metabolism, circular economy, secondary resource potentials) as well as for transport studies and land system science. So far, such maps were only available for specific years but not in time series. Even for s...

Global societal material stock in buildings and infrastructure have accumulated rapidly within the last decades, along with population growth. Recently, an approach for nation‐wide mapping of material stock at 10 m spatial resolution, using freely available and globally consistent Earth Observation (EO) imagery, has been introduced as an alternativ...

Decarbonizing transport is crucial for achieving climate targets, which is challenging because mobility is growing rapidly. Personal mobility is a key societal service and basic need, but currently not available to everyone with sufficient quality and quantity. The basis for mobility and accessibility of desired destinations is infrastructure, but...

Tackling the unfolding multiple environmental crisis requires a fundamental transformation of the global socio-economic metabolism of materials and energy flows to become more circular, efficient, carbon-neutral and compatible with Planetary Boundaries. Material stocks in the built environment, e.g. infrastructures, buildings and machinery, form th...

In the second half of the twenty-first century, a strong growth of global human population and economic activity went along with a rapid accumulation of societal material stock. Societal material stock encompasses all long-lived materials contained in buildings, infrastructure and other durable goods. Material stocks are the basis for human-living...

International datasets on economy-wide material flows currently fail to comprehensively cover the quantitatively most important materials and countries, to provide centennial coverage and to differentiate between processing stages. These data gaps hamper research and policy on resource use. Herein, we present and document the data processing and co...

Global material stocks of infrastructure, buildings, machinery and consumer products are growing rapidly, driving emissions and other environmental impacts during materials extraction, processing, construction and waste. However, international data on economy-wide material flows (ew-MFA) currently is limited to national extraction, trade and consum...

As current action remains insufficient to meet the goals of the Paris agreement let alone to stabilize the climate, there is increasing hope that solutions related to demand, services and social aspects of climate change mitigation can close the gap. However, given these topics are not investigated by a single epistemic community, the literature ba...

Sustainable resource use calls for substantial changes to existing infrastructures, which lock societies into current resource use patterns. Urban mobility is a case in point: existing material stocks of infrastructure and vehicles require large amounts of materials and energy for maintenance and operation in order to provide mobility services, the...

The dynamics of societal material stocks such as buildings and infrastructures and their spatial patterns drive surging resource use and emissions. Two main types of data are currently used to map stocks, night-time lights (NTL) from Earth-observing (EO) satellites and cadastral information. We present an alternative approach for broad-scale materi...

The circular economy (CE) is increasingly positioned as key strategy for a sustainability transformation, by shifting focus on keeping materials in high value applications as long as possible, thereby reducing resource use, waste and emissions. A robust monitoring across levels and actors is needed to guide implementation, assess progress beyond sp...

As long as economic growth is a major political goal, decoupling growth from resource use and emissions is a prerequisite for a sustainable net-zero emissions future. However, empirical evidence for absolute decoupling, i.e., decreasing resource use and emissions at the required scale despite continued economic growth, is scarce and scattered acros...

Strategies toward ambitious climate targets usually rely on the concept of “decoupling”; that is, they aim at promoting economic growth while reducing the use of natural resources and GHG emissions. GDP growth coinciding with absolute reductions in emissions or resource use is denoted as “absolute decoupling”, as opposed to “relative decoupling”, w...

From a frontrunner in recycling, to the circular economy. Austria ranks as one of the global frontrunners in recycling. Four decades of dedicated policy and action have led to a situation where 58% of all municipal waste is recycled. The real opportunity now is to leverage this strong position and light the way towards a circular economy that radi...