Results 231 to 240 of about 8,133 (262)

Predictability Mysteries in Cloud-Resolving Models

Monthly Weather Review, 2006
Abstract The rapid amplification of small-amplitude perturbations by the chaotic nature of the atmospheric dynamics intrinsically limits the skill of deterministic weather forecasts. In this study, limited-area cloud-resolving numerical weather prediction (NWP) experiments are conducted to investigate the role of mesoscale processes in ...
Hohenegger, Cathy, Lüthi, Daniel, Schär, Christoph   +2 more
openaire   +2 more sources

Cloud and circulation feedbacks in a near‐global aquaplanet cloud‐resolving model [PDF]

Journal of Advances in Modeling Earth Systems, 2017
AbstractA near‐global aquaplanet cloud‐resolving model (NGAqua) with fixed meridionally varying sea‐surface temperature (SST) is used to investigate cloud feedbacks due to three climate perturbations: a uniform 4 K SST increase, a quadrupled‐CO2 concentration, and both combined.
Pornampai Narenpitak, Christopher S Bretherton, Marat F Khairoutdinov   +2 more
exaly   +2 more sources

Cloud-Resolving Modeling of Precipitation

2011
Precipitation has important impacts on people’s daily life and torrential ­precipitation could bring tremendous losses in economy and cause fatalities. Thus, precipitation always is one of the top priorities in operational forecast and scientific research. Precipitation is a result of convective development under a favorable environment.
Xiaofan Li, Shouting Gao
openaire   +1 more source

Cloud‐resolving model simulations of multiply‐banded frontal clouds

Quarterly Journal of the Royal Meteorological Society, 2005
AbstractAn idealized two‐dimensional cloud‐resolving model is used to investigate the formation and temporal evolution of multiply‐banded clouds in frontal zones. Radar observations often show both upright and slantwise convection in the circulations associated with such bands.
M. Pizzamei, S. L. Gray, K. A. Browning
openaire   +1 more source

Future Perspective of Cloud-Resolving Modeling

2016
In this chapter, a set of cloud microphysical schemes are simplified based on the grid-scale data from the simulation of tropical rainfall event during TOGA COARE. The basic concept of cloud-resolving convection parameterization and its application to general circulation model simulations are discussed.
Xiaofan Li, Shouting Gao
openaire   +1 more source

Parallel Implementation and Scalability of Cloud Resolving EULAG Model

2012
Progress in the development of the PetaScale implementation of the anelastic EULAG model combined with the warm-rain bulk and bin microphysics schemes, as well its application to multiscale cloud modeling, are presented. A new three-dimensional (3D) model domain decomposition is implemented to increase model performance and scalability.
Andrzej A. Wyszogrodzki, Zbigniew Pawel Piotrowski, Wojciech W. Grabowski   +2 more
openaire   +1 more source

Efficient data IO for a Parallel Global Cloud Resolving Model

Environmental Modelling and Software, 2011
Execution of a Global Cloud Resolving Model (GCRM) at target resolutions of 2-4 km will generate, at a minimum, 10s of Gigabytes of data per variable per snapshot. Writing this data to disk, without creating a serious bottleneck in the execution of the GCRM code, while also supporting efficient post-execution data analysis is a significant challenge ...
Bruce J Palmer, David A Randall
exaly   +2 more sources

Cloud seeding impact on precipitation as revealed by cloud-resolving mesoscale model

Meteorology and Atmospheric Physics, 2006
A cloud-resolving mesoscale model has been used to investigate the effects of cloud seeding by silver-iodide (AgI) if the seeding is performed at cold part of a long-lasting convective cloud. Our motivation for this research was to answer the principle question: where, when and what amount of silver-iodide lead to optimum effects of seeding: rain ...
M. Ćurić, D. Janc, V. Vučković
openaire   +1 more source

Developping a new cloud resolving model for Titan’s methane clouds

Titan is the largest moon of Saturn, with a radius around 2575 km, and it is surrounded by a thick atmosphere composed of nitrogen, methane, and many other organic compounds. The temperature and pressure profiles on Titan enable the condensation of several gases in the atmosphere, including methane, forming clouds.
Enora Moisan, Aymeric Spiga, Audrey Chatain   +2 more
openaire   +1 more source

Improving the representation of turbulence and clouds in cloud resolving models and general circulation models

2014
Over the past few years a new type of general circulation model (GCM) has emerged that is known as the multiscale modeling framework (MMF). The Colorado State University (CSU) MMF represents a coupling between the Community Atmosphere Model (CAM) GCM and the System of Atmospheric Modeling (SAM) cloud resolving model (CRM).
openaire   +1 more source