Results 11 to 20 of about 55,445 (259)

Precipitation Characteristics in the Community Atmosphere Model and Their Dependence on Model Physics and Resolution

Journal of Advances in Modeling Earth Systems, 2019
Precipitation amount (A), frequency (F), intensity (I), and duration (D) are important properties of precipitation, but their estimates are sensitive to data resolution.
Di Chen, Aiguo Dai
doaj   +2 more sources

Assessing the Uncertainty of Tropical Cyclone Simulations in NCAR's Community Atmosphere Model

Journal of Advances in Modeling Earth Systems, 2011
The paper explores the impact of the initial-data, parameter and structural model uncertainty on the simulation of a tropical cyclone-like vortex in the National Center for Atmospheric Research's (NCAR) Community Atmosphere Model (CAM).
Kevin A Reed, Christiane Jablonowski
doaj   +3 more sources

Improving the performance scalability of the community atmosphere model [PDF]

The International Journal of High Performance Computing Applications, 2011
The Community Atmosphere Model (CAM), which serves as the atmosphere component of the Community Climate System Model (CCSM), is the most computationally expensive CCSM component in typical configurations. On current and next-generation leadership class computing systems, the performance of CAM is tied to its parallel scalability.
Mirin, A. A., Worley, P. H.
openaire   +1 more source

A Community Atmosphere Model With Superparameterized Clouds [PDF]

Eos, Transactions American Geophysical Union, 2013
Simulations by climate models are used to project the climate change expected as atmospheric greenhouse gas concentrations rise. How much will the Earth warm? Will south Asia experience stronger monsoons in the future? Will the American Southwest continue to desiccate? How soon will the Arctic become ice free? How fast and how much will sea level rise?
David Randall, Mark Branson, Minghuai Wang, Steven Ghan, Cheryl Craig, Andrew Gettelman, James Edwards   +6 more
openaire   +1 more source

On resolution sensitivity in the Community Atmosphere Model

Quarterly Journal of the Royal Meteorological Society, 2020
AbstractAdvances in high‐performance computing make it possible to run atmospheric general circulation models (AGCMs) over an increasingly wider range of grid resolutions, using either globally uniform or variable‐resolution grids. In principle, this is an exciting opportunity to resolve atmospheric process and scales in a global model and in ...
Adam R. Herrington, Kevin A. Reed
openaire   +2 more sources

Improved dust representation in the Community Atmosphere Model [PDF]

Journal of Advances in Modeling Earth Systems, 2014
AbstractAerosol‐climate interactions constitute one of the major sources of uncertainty in assessing changes in aerosol forcing in the anthropocene as well as understanding glacial‐interglacial cycles. Here we focus on improving the representation of mineral dust in the Community Atmosphere Model and assessing the impacts of the improvements in terms ...
Albani, S, Mahowald, N, Perry, A, Scanza, R, Zender, C, Heavens, N, Maggi, V, Kok, J, Otto-Bliesner, B   +8 more
openaire   +3 more sources

A comprehensive assessment of tropical stratospheric upwelling in the specified dynamics Community Earth System Model 1.2.2 – Whole Atmosphere Community Climate Model (CESM (WACCM)) [PDF]

Geoscientific Model Development, 2020
Specified dynamics (SD) schemes relax the circulation in climate models toward a reference meteorology to simulate historical variability. These simulations are widely used to isolate the dynamical contributions to variability and trends in trace gas ...
N. A. Davis, N. A. Davis, S. M. Davis, R. W. Portmann, E. Ray, K. H. Rosenlof, P. Yu, P. Yu   +7 more
doaj   +1 more source

Characterization of active and total fungal communities in the atmosphere over the Amazon rainforest [PDF]

Biogeosciences, 2015
Fungi are ubiquitous in the atmosphere and may play an important role in atmospheric processes. We investigated the composition and diversity of fungal communities over the Amazon rainforest canopy and compared these communities to fungal communities ...
A. M. Womack, P. E. Artaxo, F. Y. Ishida, R. C. Mueller, S. R. Saleska, K. T. Wiedemann, B. J. M. Bohannan, J. L. Green   +7 more
doaj   +1 more source

Research on Influencing Factors of Knowledge Hiding Behavior in Socialized Q&A Communities: Taking Zhihu as an Example

Complexity, 2022
With the normalization of epidemic prevention and control, the expression of the public’s demand for health information on online platforms continues to increase, while knowledge hiding behavior has seriously hindered the communication and dissemination ...
Wen-Zhu Li, Jiang-Fei Chen, Xin Feng, Qiang Yan   +3 more
doaj   +1 more source

Performance engineering in the community atmosphere model

Journal of Physics: Conference Series, 2006
The Community Atmosphere Model (CAM) is the atmospheric component of the Community Climate System Model (CCSM) and is the primary consumer of computer resources in typical CCSM simulations. Performance engineering has been an important aspect of CAM development throughout its existence. This paper briefly summarizes these efforts and their impacts over
Worley, P., Mirin, A., Drake, J., Sawyer, W.   +3 more
openaire   +1 more source