Philip Stier: Publications

Intercomparison of shortwave radiative transfer schemes in global aerosol modeling: results from the AeroCom Radiative Transfer Experiment

Atmospheric Chemistry and Physics European Geosciences Union (2013)

Authors:

CA Randles, S Kinne, G Myhre, M Schulz, P Stier, J Fischer, L Doppler, E Highwood, C Ryder, B Harris, J Huttunen, Y Ma, RT Pinker, B Mayer, D Neubauer, R Hitzenberger, L Oreopoulos, D Lee, G Pitari, G Di Genova, J Quaas, Fred G Rose, S Kato, ST Rumbold, I Vardavas, N Hatzianastassiou, C Matsoukas, H Yu, F Zhang, H Zhang, P Lu

Abstract:

Abstract. In this study we examine the performance of 31 global model radiative transfer schemes in cloud-free conditions with prescribed gaseous absorbers and no aerosols (Rayleigh atmosphere), with prescribed scattering-only aerosols, and with more absorbing aerosols. Results are compared to benchmark results from high-resolution, multi-angular line-by-line radiation models. For purely scattering aerosols, model bias relative to the line-by-line models in the top-of-the atmosphere aerosol radiative forcing ranges from roughly −10 to 20%, with over- and underestimates of radiative cooling at higher and lower sun elevation, respectively. Inter-model diversity (relative standard deviation) increases from ~10 to 15% as sun elevation increases. Inter-model diversity in atmospheric and surface forcing decreases with increased aerosol absorption, indicating that the treatment of multiple-scattering is more variable than aerosol absorption in the models considered. Aerosol radiative forcing results from multi-stream models are generally in better agreement with the line-by-line results than the simpler two-stream schemes. Considering radiative fluxes, model performance is generally the same or slightly better than results from previous radiation scheme intercomparisons. However, the inter-model diversity in aerosol radiative forcing remains large, primarily as a result of the treatment of multiple-scattering. Results indicate that global models that estimate aerosol radiative forcing with two-stream radiation schemes may be subject to persistent biases introduced by these schemes, particularly for regional aerosol forcing.

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Intercomparison of shortwave radiative transfer schemes in global aerosol modeling: results from the AeroCom Radiative Transfer Experiment

ACP Copernicus Publications 13:5 (2013) 2347-2379

Authors:

CA Randles, S Kinne, G Myhre, M Schulz, P Stier, J Fischer, L Doppler, E Highwood, C Ryder, B Harris, J Huttunen, Y Ma, RT Pinker, B Mayer, D Neubauer, R Hitzenberger, L Oreopoulos, D Lee, G Pitari, G Di Genova, J Quaas, FG Rose, S Kato, ST Rumbold, I Vardavas, N Hatzianastassiou, C Matsoukas, H Yu, F Zhang, H Zhang, P Lu

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Radiative forcing of the direct aerosol effect from AeroCom Phase II simulations

ACP Copernicus Publications 13:4 (2013) 1853-1877

Authors:

G Myhre, BH Samset, M Schulz, Y Balkanski, S Bauer, TK Berntsen, H Bian, N Bellouin, M Chin, T Diehl, RC Easter, J Feichter, SJ Ghan, D Hauglustaine, T Iversen, S Kinne, A Kirkevåg, JF Lamarque, G Lin, X Liu, MT Lund, G Luo, X Ma, T van Noije, JE Penner, PJ Rasch, A Ruiz, Ø Seland, RB Skeie, P Stier, T Takemura, K Tsigaridis, P Wang, Z Wang, L Xu, H Yu, F Yu, JH Yoon, K Zhang, H Zhang, C Zhou

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Clouds and aerosols

Chapter in Climate change 2013: the physical science basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press (2013) 571-657

Authors:

Olivier Boucher, David Randall, Paulo Artaxo, Christopher Bretherton, Gragam Feingold, Piers Forster, V-M Kerminen, Yutaka Kondo, Hong Liao, Ulrike Lohmann, others

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Host model uncertainties in aerosol radiative forcing estimates: results from the AeroCom prescribed intercomparison study

Atmos. Chem. Phys. 12 (2013) 9

Authors:

P Stier, NAJ Schutgens, H Bian, O Boucher, M Chin, S Ghan, N Huneeus, S Kinne, G Lin, G Myhre, JE Penner, C Randles, B Samset, M Schulz, H Yu, C Zhou

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Philip Stier

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Intercomparison of shortwave radiative transfer schemes in global aerosol modeling: results from the AeroCom Radiative Transfer Experiment

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Intercomparison of shortwave radiative transfer schemes in global aerosol modeling: results from the AeroCom Radiative Transfer Experiment

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Radiative forcing of the direct aerosol effect from AeroCom Phase II simulations

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Clouds and aerosols

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Host model uncertainties in aerosol radiative forcing estimates: results from the AeroCom prescribed intercomparison study

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Philip Stier

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Intercomparison of shortwave radiative transfer schemes in global aerosol modeling: results from the AeroCom Radiative Transfer Experiment

Authors:

Abstract:

Intercomparison of shortwave radiative transfer schemes in global aerosol modeling: results from the AeroCom Radiative Transfer Experiment

Authors:

Radiative forcing of the direct aerosol effect from AeroCom Phase II simulations

Authors:

Clouds and aerosols

Authors:

Host model uncertainties in aerosol radiative forcing estimates: results from the AeroCom prescribed intercomparison study

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