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Black carbon vertical profiles strongly affect its radiative forcing uncertainty
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ghan, S. J. Skeie, R. B. Lin, G. Seland, O. Liu, X. Bian, H. Kirkevag, A. Berntsen, T. K. Bellouin, N. Diehl, T. Iversen, T. Schulz, M. Samset, B. H. Bauer, S. Kinne, S. Penner, J. E. Zhang, K. Tsigaridis, K. Balkanski, Y. Stier, P. Myhre, G. Takemura, T. Easter, R. C. Lamarque, J.-F. |
| Copyright Year | 2013 |
| Description | The impact of black carbon (BC) aerosols on the global radiation balance is not well constrained. Here twelve global aerosol models are used to show that at least 20% of the present uncertainty in modeled BC direct radiative forcing (RF) is due to diversity in the simulated vertical profile of BC mass. Results are from phases 1 and 2 of the global aerosol model intercomparison project (AeroCom). Additionally, a significant fraction of the variability is shown to come from high altitudes, as, globally, more than 40% of the total BC RF is exerted above 5 km. BC emission regions and areas with transported BC are found to have differing characteristics. These insights into the importance of the vertical profile of BC lead us to suggest that observational studies are needed to better characterize the global distribution of BC, including in the upper troposphere. |
| File Size | 634446 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140013468 |
| Archival Resource Key | ark:/13960/t4wh7k72x |
| Language | English |
| Publisher Date | 2013-03-01 |
| Access Restriction | Open |
| Subject Keyword | Black Carbon Aerosols Radiation Albedo Atmospheric Models Variability Optical Properties Pollution Transport Troposphere Clouds Meteorology Global Warming Atmospheric Radiation Radiative Forcing Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
