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Yin, F. (author), Grewe, V. (author), Castino, F. (author), Rao, P.V. (author), Matthes, S (author), Dahlmann, K. (author), Dietmüller, Simone (author), Frömming, C. (author), Yamashita, H. (author)The Modular Earth Submodel System (MESSy) provides an interface to couple submodels to a base model via a modular flexible data management facility. This paper presents the newly developed MESSy submodel, ACCF version 1.0 (ACCF 1.0), based on algorithmic Climate Change Functions version 1.0 (aCCFs 1.0), which describes the climate impact of...journal article 2023
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- Yamashita, Hiromi (author), Bian, Zhenfeng (author), Urakawa, A. (author), Stockenhuber, Michael (author) contribution to periodical 2023
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Dietmüller, Simone (author), Matthes, Sigrun (author), Dahlmann, Katrin (author), Yamashita, Hiroshi (author), Simorgh, Abolfazl (author), Lührs, Benjamin (author), Grewe, V. (author), Yin, F. (author), Castino, F. (author)Aviation aims to reduce its climate effect by adopting trajectories that avoid regions of the atmosphere where aviation emissions have a large impact. To that end, prototype algorithmic climate change functions (aCCFs) can be used, which provide spatially and temporally resolved information on aviation's climate effect in terms of future near...journal article 2023
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Dahlmann, K. (author), Grewe, V. (author), Matthes, S. (author), Yamashita, H. (author)Climate impact of anthropogenic activities is more and more of public concern. But while CO<sub>2</sub> emissions are accounted in emissions trading and mitigation plans, emissions of non-CO<sub>2</sub> components contributing to climate change receive much less attention. One of the anthropogenic emission sectors, where non-CO<sub>2</sub>...journal article 2022
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Rao, P.V. (author), Yin, F. (author), Grewe, V. (author), Yamashita, Hiroshi (author), Jöckel, Patrick (author), Matthes, Sigrun (author), Mertens, Mariano (author), Frömming, Christine (author)Aviation contributes to 3.5% of anthropogenic climate change in terms of Effective Radiative Forcing (ERF) and 5% in terms of temperature change. Aviation climate impact is expected to increase rapidly due to the growth of air transport sector in most regions of the world and the effects of the COVID-19 pandemic are expected to only have a...abstract 2022
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Aonuki, S. (author), Yamashita, Yudai (author), Limodio, G. (author), Narita, Shunsuke (author), Takayanagi, Kaori (author), Iwai, Ai (author), Toko, Kaoru (author), Zeman, M. (author), Isabella, O. (author), Suemasu, Takashi (author)We formed phosphorous(P)-ion-implanted n-BaSi<sub>2</sub> films on p-Si(111) substrates and demonstrated solar-cell functionality of the n-BaSi<sub>2</sub>/p-Si heterojunction under AM1.5 illumination. The BaSi<sub>2</sub> films were grown by molecular beam epitaxy, followed by implantation of P ions to the BaSi<sub>2</sub> films using PF<sub...journal article 2022
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Rao, P.V. (author), Yin, F. (author), Grewe, V. (author), Yamashita, Hiroshi (author), Jöckel, Patrick (author), Matthes, Sigrun (author), Mertens, Mariano (author), Frömming, Christine (author)One possibility to reduce the climate impact of aviation is the avoidance of climate-sensitive regions, which is synonymous with climate-optimised flight planning. Those regions can be identified by algorithmic Climate Change Functions (aCCFs) for nitrogen oxides (NOx), water vapour (H2O) as well as contrail cirrus, which provide a measure of...journal article 2022
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Castino, F. (author), Yin, F. (author), Grewe, V. (author), Soler, Manuel (author), Simorgh, Abolfazl (author), Yamashita, Hiroshi (author), Matthes, Sigrun (author), Baumann, Sabine (author), Linke, Florian (author)Air traffic contributes to global warming through CO2 and non-CO2 effects, including the impact of NOx emissions on atmospheric ozone and methane, formation of contrails, and changes in the amount of stratospheric water vapour. The climate impact of non-CO2 effects is highly dependent on the background atmospheric conditions at the time and...conference paper 2021
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Yamashita, Hiroshi (author), Yin, F. (author), Grewe, V. (author), Jöckel, Patrick (author), Matthes, Sigrun (author), Kern, Bastian (author), Dahlmann, Katrin (author), Frömming, Christine (author)Climate-optimized routing is an operational measure to effectively reduce the climate impact of aviation with a slight increase in aircraft operating costs. This study examined variations in the flight characteristics among five aircraft routing strategies and discusses several characteristics of those routing strategies concerning typical...journal article 2021
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Yamashita, Yudai (author), Ruiz Tobon, C.M. (author), Santbergen, R. (author), Zeman, M. (author), Isabella, O. (author), Suemasu, Takashi (author)We performed advanced opto-electrical simulations on thin-film BaSi<sub>2</sub> solar cells. First, absorption spectra of BaSi<sub>2</sub>-pn homojunction solar cells on Si substrate were calculated based on flat and/or pyramidally-textured surfaces, wherein 20-nm-thick n<sup>+</sup>-BaSi<sub>2</sub> was the topmost electron transport layer....journal article 2021
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Comparison of various aircraft routing strategies using the air traffic simulation model airtraf 2.0Yamashita, H. (author), Yin, F. (author), Grewe, V. (author), Jockel, P. (author), Matthes, Sigrun (author), Kern, Bastian (author), Dahlmann, K. (author), Frömming, C. (author)A climate-optimized routing is expected as an operational measure to reduce the climate impact of aviation, whereas this routing causes extra aircraft operating costs. This study performs some air traffic simulations of nine aircraft routing strategies which include the climate-optimized routing, and examines characteristics of those routings. A...abstract 2020
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Dahlmann, K. (author), Matthes, Sigrun (author), Yamashita, H. (author), Unterstrasser, S. (author), Grewe, V. (author), Marks, Tobias (author)An operational measure to aim for mitigation of aviation climate impact that is inspired by migrant birds is to fly in aerodynamic formation. This operational measure adapted to human aircraft would eventually save fuel and is, therefore, expected to reduce the climate impact of aviation. As this method changes beside the total emission also the...abstract 2020
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Dahlmann, Katrin (author), Matthes, Sigrun (author), Yamashita, Hiroshi (author), Unterstrasser, Simon (author), Grewe, V. (author), Marks, Tobias (author)An operational measure that is inspired by migrant birds aiming toward the mitigation of aviation climate impact is to fly in aerodynamic formation. When this operational measure is adapted to commercial aircraft it saves fuel and is, therefore, expected to reduce the climate impact of aviation. Besides the total emission amount, this...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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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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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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Lee, M.J. (author), Ronchini Ximenes, A. (author), Padmanabhan, P. (author), Wang, Tzu Jui (author), Huang, Kuo Chin (author), Yamashita, Yuichiro (author), Yaung, Dun Nian (author), Charbon-Iwasaki-Charbon, E. (author)We present a high-performance back-illuminated three-dimensional stacked single-photon avalanche diode (SPAD), which is implemented in 45-nm CMOS technology for the first time. The SPAD is based on a P<sup>+</sup>/Deep N-well junction with a circular shape, for which N-well is intentionally excluded to achieve a wide depletion region, thus...journal article 2018
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Filatova, O.G. (author), Yang, Y. (author), Dewald, J.P.A. (author), Tian, Runfeng (author), Maceira-Elvira, Pablo (author), Takeda, Yusuke (author), Kwakkel, Gert (author), Yamashita, Okito (author), van der Helm, F.C.T. (author)In hemiparetic stroke, functional recovery of paretic limb may occur with the reorganization of neural networks in the brain. Neuroimaging techniques, such as magnetic resonance imaging (MRI), have a high spatial resolution which can be used to reveal anatomical changes in the brain following a stroke. However, low temporal resolution of MRI...journal article 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), Dahlmann, K. (author), Flink, J. (author), Frömming, C. (author), Ghosh, R. (author), Gierens, K. (author), Heller, R (author), Hendricks, J. (author), Jockel, P. (author), Kaufmann, S. (author), Kölker, K. (author), Linke, F. (author), Luchkova, T. (author), Lührs, B. (author), van Manen, Jesper (author), Matthes, S (author), Minikin, A. (author), Niklaß, Malte (author), Plohr, M. (author), Righi, M. (author), Rosanka, S. (author), Schmitt, A (author), Schumann, U (author), Terekhov, I. (author), Unterstrasser, S. (author), Vázquez-Navarro, M. (author), Voigt, C. (author), Wicke, K. (author), Yamashita, H. (author), Zahn, A. (author), Ziereis, H. (author)The WeCare project (Utilizing Weather information for Climate efficient and eco efficient future aviation), an internal project of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt, DLR), aimed at finding solutions for reducing the climate impact of aviation based on an improved understanding of the atmospheric impact from...journal article 2017
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