Results 21 to 30 of about 24,097 (273)

Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM [PDF]

, 2007
The double-moment cloud microphysics scheme from ECHAM4 has been coupled to the size-resolved aerosol scheme ECHAM5-HAM. ECHAM5-HAM predicts the aerosol mass and number concentrations and the aerosol mixing state.
Ferrachat, S., Hoose, C., Kloster, S., Lohmann, U., Roeckner, E., Stier, P., Zhang, J.   +6 more
core   +5 more sources

A Bayesian approach for statistical–physical bulk parameterization of rain microphysics. Part II: Idealized Markov chain Monte Carlo experiments [PDF]

, 2020
Observationally informed development of a new framework for bulk rain microphysics, the Bayesian Observationally Constrained Statistical–Physical Scheme (BOSS; described in Part I of this study), is demonstrated. This scheme’s development is motivated by
Kumjian, MR, Lunderman, S, Morrison, H, Morzfeld, M, Prat, OP, Reimel, KJ, van Lier-Walqui, M   +6 more
core   +1 more source

Bimodal Distribution of Sulfuric Acid Aerosols in the Upper Haze of Venus [PDF]

, 2013
The upper haze (UH) of Venus is variable on the order of days and it is populated by two particle modes. We use a 1D microphysics and vertical transport model based on the Community Aerosol and Radiation Model for Atmospheres to evaluate whether ...
Bardeen, Charles G., Crisp, David, Gao, Peter, Yung, Yuk L., Zhang, Xi   +4 more
core   +2 more sources

Development of aerosol activation in the double-moment Unified Model and evaluation with CLARIFY measurements [PDF]

Atmospheric Chemistry and Physics, 2020
Representing the number and mass of cloud and aerosol particles independently in a climate, weather prediction or air quality model is important in order to simulate aerosol direct and indirect effects on radiation balance.
H. Gordon, H. Gordon, P. R. Field, P. R. Field, S. J. Abel, P. Barrett, K. Bower, I. Crawford, Z. Cui, D. P. Grosvenor, A. A. Hill, J. Taylor, J. Wilkinson, H. Wu, K. S. Carslaw   +14 more
doaj   +1 more source

Numerical framework and performance of the new multiple-phase cloud microphysics scheme in RegCM4.5: precipitation, cloud microphysics, and cloud radiative effects [PDF]

Geoscientific Model Development, 2016
We implement and evaluate a new parameterization scheme for stratiform cloud microphysics and precipitation within regional climate model RegCM4. This new parameterization is based on a multiple-phase one-moment cloud microphysics scheme built upon the ...
R. Nogherotto, A. M. Tompkins, G. Giuliani, E. Coppola, F. Giorgi   +4 more
doaj   +1 more source

Importance of tropospheric volcanic aerosol for indirect radiative forcing of climate [PDF]

, 2012
Observations and models have shown that continuously degassing volcanoes have a potentially large effect on the natural background aerosol loading and the radiative state of the atmosphere.
Carslaw, KS, Forster, PM, Mann, GW, Pringle, KJ, Rap, A, Schmidt, A, Spracklen, DV, Wilson, M   +7 more
core   +2 more sources

A unified parameterization of clouds and turbulence using CLUBB and subcolumns in the Community Atmosphere Model [PDF]

Geoscientific Model Development, 2015
Most global climate models parameterize separate cloud types using separate parameterizations. This approach has several disadvantages, including obscure interactions between parameterizations and inaccurate triggering of cumulus parameterizations ...
K. Thayer-Calder, A. Gettelman, C. Craig, S. Goldhaber, P. A. Bogenschutz, C.-C. Chen, H. Morrison, J. Höft, E. Raut, B. M. Griffin, J. K. Weber, V. E. Larson, M. C. Wyant, M. Wang, Z. Guo, S. J. Ghan   +15 more
doaj   +1 more source

Optical properties and simple forcing efficiency of the organic aerosols and black carbon emitted by residential wood burning in rural central Europe [PDF]

Atmospheric Chemistry and Physics
Recent years have seen an increase in the use of wood for energy production of over 30 %, and this trend is expected to continue due to the current energy crisis and geopolitical instability.
A. Cuesta-Mosquera, K. Glojek, G. Močnik, G. Močnik, G. Močnik, L. Drinovec, L. Drinovec, L. Drinovec, A. Gregorič, A. Gregorič, M. Rigler, M. Ogrin, B. Romshoo, K. Weinhold, M. Merkel, D. van Pinxteren, H. Herrmann, A. Wiedensohler, M. Pöhlker, T. Müller   +19 more
doaj   +1 more source

Cloud optical thickness and effective particle radius derived from transmitted solar radiation measurements : Comparison with cloud radar observations [PDF]

, 2006
A method is presented for determining the optical thickness and effective particle radius of stratiform clouds containing liquid water drops in the absence of drizzle from transmitted solar radiation measurements.
Kamei, Akihide, Kikuchi, Nobuhiro, Kumagai, Hiroshi, Kuroiwa, Hiroshi, Nakajima, Takashi Y., Nakajima, Teruyuki, Nakamura, Ryosuke   +6 more
core   +2 more sources

Aerosol effects on deep convection: the propagation of aerosol perturbations through convective cloud microphysics [PDF]

Atmospheric Chemistry and Physics, 2019
The impact of aerosols on ice- and mixed-phase processes in deep convective clouds remains highly uncertain, and the wide range of interacting microphysical processes is still poorly understood. To understand these processes, we analyse diagnostic output
M. Heikenfeld, B. White, B. White, L. Labbouz, L. Labbouz, P. Stier   +5 more
doaj   +1 more source