Aircraft observations of the upper tropospheric fine particle aerosol in the Northern and Southern Hemispheres at midlatitudes
Andreas Minikin,Andreas Petzold,Johan Ström,Radovan Krejci,M. Seifert,Peter van Velthoven,Hans Schlager,Ulrich Schumann +7 more
TLDR
In this paper, two aircraft field campaigns have been performed to study aerosol and cirrus cloud properties of the upper troposphere (UT) in the midlatitudes of the southern hemisphere (SH) and the northern hemisphere (NH).Abstract:
] As part of the project INCA (InterhemisphericDifferences in Cirrus Properties from AnthropogenicEmissions) two aircraft field campaigns have beenperformed to study aerosol and cirrus cloud properties ofthe upper troposphere (UT) in the midlatitudes of thesouthern hemisphere (SH) and the northern hemisphere(NH). This paper focuses on the measurements of UTnumber concentrations and tropospheric vertical profilesof volatile and refractory Aitken as well as totalaccumulation mode particles. The results are discussedwith respect to interhemispheric differences. Aerosolnumber concentrations in the NH are more variable andtypically a factor of 2–3 higher. The SH data considerablyextend the few existing UT in situ aerosol measurementsinthe SH midlatitudes.read more
Citations
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Bounding the role of black carbon in the climate system: A scientific assessment
Tami C. Bond,Sarah J. Doherty,David W. Fahey,Piers M. Forster,Terje Koren Berntsen,Benjamin DeAngelo,Mark Flanner,Steven J. Ghan,Bernd Kärcher,Dorothy Koch,Stefan Kinne,Yutaka Kondo,Patricia K. Quinn,Marcus C. Sarofim,Martin G. Schultz,Michael Schulz,Chandra Venkataraman,Hua Zhang,Shiqiu Zhang,Nicolas Bellouin,Sarath K. Guttikunda,Philip K. Hopke,Mark Z. Jacobson,Johannes W. Kaiser,Zbigniew Klimont,Ulrike Lohmann,Joshua P. Schwarz,Drew Shindell,Trude Storelvmo,Stephen G. Warren,Charles S. Zender +30 more
TL;DR: In this paper, the authors provided an assessment of black-carbon climate forcing that is comprehensive in its inclusion of all known and relevant processes and that is quantitative in providing best estimates and uncertainties of the main forcing terms: direct solar absorption; influence on liquid, mixed phase, and ice clouds; and deposition on snow and ice.
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The aerosol-climate model ECHAM5-HAM
Philip Stier,Johann Feichter,Stefan Kinne,Silvia Kloster,Elisabetta Vignati,Julian Wilson,Laurens Ganzeveld,Ina Tegen,Martin Werner,Yves Balkanski,Michael Schulz,Olivier Boucher,Andreas Minikin,Andreas Petzold +13 more
TL;DR: The aerosol-climate modelling system ECHAM5-HAM as mentioned in this paper is based on a flexible microphysical approach and, as the number of externally imposed parameters is minimised, allows the application in a wide range of climate regimes.
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Toward a Minimal Representation of Aerosols in Climate Models: Description and Evaluation in the Community Atmosphere Model CAM5
Xiaohong Liu,Richard C. Easter,Steven J. Ghan,Rahul A. Zaveri,Philip J. Rasch,Xiangjun Shi,Jean-Francois Lamarque,Andrew Gettelman,Hugh Morrison,Francis Vitt,Andrew Conley,Sungsu Park,Richard Neale,Cecile Hannay,Annica M. L. Ekman,Peter Hess,Natalie M. Mahowald,William D. Collins,Michael J. Iacono,Christopher S. Bretherton,Mark Flanner,David L. Mitchell +21 more
TL;DR: In this article, a modal aerosol module (MAM) has been developed for the Community Atmosphere Model version 5 (CAM5), the atmospheric component of the Community Earth System Model version 1 (CESM1).
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Transport impacts on atmosphere and climate: Aviation
David S. Lee,Giovanni Pitari,Volker Grewe,Klaus Gierens,Joyce E. Penner,Andreas Petzold,Michael J. Prather,Ulrich Schumann,Alkiviadis F. Bais,Terje Koren Berntsen,D. Iachetti,Ling L. Lim,Robert Sausen +12 more
TL;DR: A comprehensive updated assessment of aviation is provided, highlighting the impact of aviation emissions of CO2 on global mean surface temperature last for many hundreds of years (in common with other sources), whilst its non-CO2 effects onTemperature last for decades.
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The global lightning-induced nitrogen oxides source
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TL;DR: The best estimate of the annual global LNOx nitrogen oxides nitrogen mass source and its uncertainty range is (5±3) Tg a−1 in this paper, implying larger flash-specific NOx emissions.
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Quantitative measurement of the microphysical and optical properties of cirrus clouds with four different in situ probes: Evidence of small ice crystals
Jean-François Gayet,Frédérique Auriol,Andreas Minikin,Johan Ström,M. Seifert,Radovan Krejci,Andreas Petzold,Guy Febvre,Ulrich Schumann +8 more
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