Searched for: author:"Grewe, V."
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Mertens, Mariano (author), Kerkweg, Astrid (author), Grewe, V. (author), Jöckel, Patrick (author), Sausen, Robert (author)
Land transport is an important emission source of nitrogen oxides, carbon monoxide, and volatile organic compounds. The emissions of nitrogen oxides affect air quality directly. Further, all of these emissions serve as a precursor for the formation of tropospheric ozone, thus leading to an indirect influence on air quality. In addition, ozone...
journal article 2020
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Mertens, Mariano (author), Kerkweg, Astrid (author), Grewe, V. (author), Jöckel, Patrick (author), Sausen, Robert (author)
Anthropogenic and natural emissions influence the tropospheric ozone budget, thereby affecting air quality and climate. To study the influence of different emission sources on the ozone budget, often source apportionment studies with a tagged tracer approach are performed. Studies investigating air quality issues usually rely on regional...
journal article 2020
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Yamashita, Hiroshi (author), Yin, F. (author), Grewe, V. (author), Jöckel, Partrick (author), Matthes, Sigrun (author), Kern, B. (author), Dahlmann, Katrin (author), Frömming, Christine (author)
Aviation contributes to climate change, and the climate impact of aviation is expected to increase further. Adaptations of aircraft routings in order to reduce the climate impact are an important climate change mitigation measure. The air traffic simulator AirTraf, as a submodel of the European Center HAMburg general circulation model (ECHAM)...
journal article 2020
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Matthes, Sigrun (author), Lührs, Benjamin (author), Dahlmann, Katrin (author), Grewe, V. (author), Linke, Florian (author), Yin, F. (author), Klingaman, Emma (author), Shine, Keith P. (author)
Aviation can reduce its climate impact by controlling its CO<sub>2</sub>-emission and non-CO<sub>2</sub> effects, e.g., aviation-induced contrail-cirrus and ozone caused by nitrogen oxide emissions. One option is the implementation of operational measures that aim to avoid those atmospheric regions that are in particular sensitive to non-CO...
journal article 2020
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Yin, F. (author), Grewe, V. (author), Gierens, Klaus (author)
Aviation is responsible for approximately 5% of global warming and is expected to increase substantially in the future. Given the continuing expansion of air traffic, mitigation of aviation’s climate impact becomes challenging but imperative. Among various mitigation options, hybrid-electric aircraft (HEA) have drawn intensive attention due to...
journal article 2020
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Rosanka, Simon (author), Frömming, Christine (author), Grewe, V. (author)
Aviation-attributed climate impact depends on a combination of composition changes in trace gases due to emissions of carbon dioxide (CO2) and non-CO2 species. Nitrogen oxides (NOx D NO C NO2) emissions induce an increase in ozone (O3) and a depletion of methane (CH4), leading to a climate warming and a cooling, respectively. In contrast to...
journal article 2020
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Grewe, V. (author), Matthes, Sigrun (author), Dahlmann, K. (author)
The contribution of aviation to anthropogenic climate change results from CO2 and non-CO2 emissions. The latter emissions comprise of nitrogen oxides, water vapour, and aerosols as well as contrail and contrailcirrus effects. A series of updates can be noted in recent studies related to the effects of NOx-emissions; the inclusion of two physical...
journal article 2019
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van Manen, J. (author), Grewe, V. (author)
Aviation contributes significantly to anthropogenic climate change, and one promising possibility for mitigation is eco-efficient flight planning by avoiding climate sensitive regions with only small changes in the aircraft trajectories. Climate sensitive regions result from strong spatial variation of the global climate impact of local non-CO2...
journal article 2019
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Grewe, V. (author)
other 2019
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Yin, F. (author), Grewe, V. (author), Frömming, Christine (author), Yamashita, Hiroshi (author)
This paper studies the impacts on flight trajectories, such as lateral and vertical changes, when avoiding the formation of persistent contrails for transatlantic flights. A sophisticated Earth-System Model (EMAC) coupled with a flight routing submodel (AirTraf) and a contrail submodel (CONTRAIL) is used to optimize flight trajectories...
journal article 2018
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Rieger, V.S. (author), Mertens, Mariano (author), Grewe, V. (author)
To mitigate the human impact on climate change, it is essential to determine the contribution of emissions to the concentration of trace gases. In particular, the source attribution of short-lived species such as OH and HO<sub>2</sub> is important as they play a crucial role for atmospheric chemistry. This study presents an advanced version...
journal article 2018
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Mertens, Mariano (author), Grewe, V. (author), Rieger, V.S. (author), Jöckel, Patrick (author)
We quantify the contribution of land transport and shipping emissions to tropospheric ozone for the first time with a chemistry-climate model including an advanced tagging method (also known as source apportionment), which considers not only the emissions of nitrogen oxides (NOx, NO, and NO2), carbon monoxide (CO), and volatile organic...
journal article 2018
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Gottschaldt, Klaus Dirk (author), Schlager, Hans (author), Baumann, Robert (author), Sinh Cai, Duy (author), Eyring, Veronika (author), Graf, Phoebe (author), Grewe, V. (author), Jöckel, Patrick (author), Jurkat-Witschas, Tina (author), Voigt, Christiane (author), Zahn, Andreas (author), Ziereis, Helmut (author)
This study places HALO research aircraft observations in the upper-tropospheric Asian summer monsoon anticyclone (ASMA) into the context of regional, intra-annual variability by hindcasts with the ECHAM/MESSy Atmospheric Chemistry (EMAC) model. The observations were obtained during the Earth System Model Validation (ESMVal) campaign in...
journal article 2018
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Lührs, Benjamin (author), Niklaß, Malte (author), Frömming, Christine (author), Grewe, V. (author), Gollnick, Volker (author)
Besides CO2, the climate impact of commercial aviation is strongly influenced by non-CO2 effects, which are highly sensitive to meteorological conditions and their spatial variations. To assess the cost-benefit potential (climate impact mitigation vs. cost increase) of climate and weather optimized flight trajectories in the North Atlantic...
conference paper 2018
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Yin, F. (author), Grewe, V. (author), van Manen, J. (author), Matthes, Sigrun (author), Yamashita, Hiroshi (author), Linke, Florian (author), Lührs, Benjamin (author)
For the first time, the algorithmic Climate Change Functions (aCCFs) for ozone, methane, water vapor, and persistent contrails have been developed within the ATM4E project to provide information on the climate sensitive regions, which can be conveniently implemented for the climate based flight routing. These aCCFs need to be verified before...
conference paper 2018
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Niklaß, Malte (author), Lührs, Benjamin (author), Grewe, V. (author), Gollnick, Volker (author)
Within this study, the lack of incentivizing airlines to internalize their climate costs is tried to be closed by the introduction of climate-charged airspaces, as non-CO2 emissions have locationand time-dependent effects upon the climate. In order to create an incentive for airlines to minimize flight time and emissions in highly...
conference paper 2018
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Matthes, Sigrun (author), Grewe, V. (author), Dahlmann, Katrin (author), Frömming, Christine (author), Irvine, Emma (author), Lim, Ling (author), Linke, Florian (author), Lührs, Benjamin (author), Owen, Bethan (author), Shine, Keith (author), Stromatas, Stavros (author), Yamashita, Hiroshi (author), Yin, F. (author)
Comprehensive assessment of the environmental aspects of flight movements is of increasing interest to the aviation sector as a potential input for developing sustainable aviation strategies that consider climate impact, air quality and noise issues simultaneously. However, comprehensive assessments of all three environmental aspects do not yet...
journal article 2017
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Grewe, V. (author), Linke, Florian (author)
Air traffic guarantees mobility and serves the needs of society to travel over long distances in a decent time. But aviation also contributes to climate change. Here, we present various mitigation options, based on technological and operational measures and present a framework to compare the different mitigation options by taking into account...
journal article 2017
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Grewe, V. (author), Tsati, E. (author), Mertens, M. (author), Frömming, C. (author), Jockel, P. (author)
Questions such as “what is the contribution of road traffic emissions to climate change?” or “what is the impact of shipping emissions on local air quality?” require a quantification of the contribution of specific emissions sectors to the concentration of radiatively active species and air-quality-related species, respectively. Here, we present...
journal article 2017
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Hendricks, J. (author), Righi, M. (author), Dahlmann, K. (author), Gottschaldt, K.-D. (author), Grewe, V. (author), Ponater, M. (author), Sausen, R. (author), Heinrichs, D. (author), Winkler, C. (author), Wolfermann, A. (author), Kampffmeyer, T. (author), Friedrich, R (author), Klötzke, M. (author), Kugler, U. (author)
Although climate change is a global problem, specific mitigation measures are frequently applied on regional or national scales only. This is the case in particular for measures to reduce the emissions of land-based transport, which is largely characterized by regional or national systems with independent infrastructure, organization, and...
journal article 2017
Searched for: author:"Grewe, V."
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