Results 11 to 20 of about 791,529 (299)

Development and Validation of the Whole Atmosphere Community Climate Model With Thermosphere and Ionosphere Extension (WACCM‐X 2.0)

Journal of Advances in Modeling Earth Systems, 2018
Key developments have been made to the NCAR Whole Atmosphere Community Climate Model with thermosphere and ionosphere extension (WACCM‐X). Among them, the most important are the self‐consistent solution of global electrodynamics, and transport of O+ in ...
Han‐Li Liu, Charles G. Bardeen, Benjamin T. Foster, Peter Lauritzen, Jing Liu, Gang Lu, Daniel R. Marsh, Astrid Maute, Joseph M. McInerney, Nicholas M. Pedatella, Liying Qian, Arthur D. Richmond, Raymond G. Roble, Stanley C. Solomon, Francis M. Vitt, Wenbin Wang   +15 more
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The Whole Atmosphere Community Climate Model Version 6 (WACCM6) [PDF]

Journal of Geophysical Research: Atmospheres, 2019
Abstract The Whole Atmosphere Community Climate Model version 6 (WACCM6) is a major update of the whole atmosphere modeling capability in the Community Earth System Model (CESM), featuring enhanced physical, chemical and aerosol parameterizations. This work describes WACCM6 and some of the important features of the model.
A. Gettelman, M. J. Mills, D. E. Kinnison, R. R. Garcia, A. K. Smith, D. R. Marsh, S. Tilmes, F. Vitt, C. G. Bardeen, J. McInerny, H.‐L. Liu, S. C. Solomon, L. M. Polvani, L. K. Emmons, J.‐F. Lamarque, J. H. Richter, A. S. Glanville, J. T. Bacmeister, A. S. Phillips, R. B. Neale, I. R. Simpson, A. K. DuVivier, A. Hodzic, W. J. Randel   +23 more
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Thermosphere extension of the Whole Atmosphere Community Climate Model [PDF]

Journal of Geophysical Research: Space Physics, 2010
In atmospheric and space environment studies it is key to understand and to quantify the coupling of atmospheric regions and the solar impacts on the whole atmosphere system. There is thus a need for a numerical model that encompasses the whole atmosphere and can self‐consistently simulate the dynamic, physical, chemical, radiative, and electrodynamic ...
H.‐L. Liu, B. T. Foster, M. E. Hagan, J. M. McInerney, A. Maute, L. Qian, A. D. Richmond, R. G. Roble, S. C. Solomon, R. R. Garcia, D. Kinnison, D. R. Marsh, A. K. Smith, J. Richter, F. Sassi, J. Oberheide   +15 more
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Ensemble data assimilation in the Whole Atmosphere Community Climate Model [PDF]

Journal of Geophysical Research: Atmospheres, 2014
AbstractWe present results pertaining to the assimilation of real lower, middle, and upper atmosphere observations in the Whole Atmosphere Community Climate Model (WACCM) using the Data Assimilation Research Testbed (DART) ensemble adjustment Kalman filter.
N. M. Pedatella, K. Raeder, J. L. Anderson, H.‐L. Liu   +3 more
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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
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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

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

The Specified Chemistry Whole Atmosphere Community Climate Model (SC‐WACCM) [PDF]

Journal of Advances in Modeling Earth Systems, 2014
AbstractWe here present, document and validate a new atmospheric component of the Community Earth System Model (CESM1): the Specified Chemistry Whole Atmosphere Community Climate Model (SC‐WACCM). As the name implies, SC‐WACCM is a middle atmosphere‐resolving model with prescribed, rather than interactive chemistry.
Smith, Karen L., Neely, R. R., Marsh, D. R., Polvani, Lorenzo M.   +3 more
openaire   +4 more sources

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
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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