Results 31 to 40 of about 1,772 (264)

Interhemispheric transport and the role of convective parameterizations [PDF]

Journal of Geophysical Research: Atmospheres, 1998
An F11 tracer simulation is performed here using the most recent Community Climate Model, the CCM3, of the National Center for Atmospheric Research (NCAR). Another F11 simulation performed with NCAR's CCM2 [Hartley et al, 1994] is also presented. Comparing the F11 mixing ratio in the models to Atmospheric Lifetime Experiment/Global Atmospheric Gases ...
A. B. Gilliland, D. E. Hartley
openaire   +1 more source

Verification of precipitation forecasts of MM5 model over Epirus, NW Greece, for various convective parameterization schemes [PDF]

Natural Hazards and Earth System Sciences, 2012
The mesoscale meteorological model MM5 is applied to 22 selected days with intense precipitation in the region of Epirus, NW Greece. At first, it was investigated whether and to what extend an increased horizontal resolution (from 8 to 2 km) improves the
O. A. Sindosi, A. Bartzokas, V. Kotroni, K. Lagouvardos   +3 more
doaj   +1 more source

Improving precipitation simulations in CIESM through a new entrainment rate parameterization

npj Climate and Atmospheric Science
Entrainment rate parameterization is important for convection schemes but uncertain in climate models. A new deep convective entrainment rate (λ) parameterization (HL parameterization) is developed from aircraft observations and implemented into the ...
Xin He, Chunsong Lu, Guang J. Zhang, Junjun Li, Lei Zhu, Hengqi Wang, Te Li, Xiaohao Guo, Sinan Gao, Yuhao Lin, Kai Yang, Wenhui Liu   +11 more
doaj   +1 more source

Impact of Cumulus Options from Weather Research and Forecasting with Chemistry in Atmospheric Modeling in the Andean Region of Southern Ecuador

Atmosphere
Cumulus parameterization schemes model the subgrid-scale effects of moist convection, affecting the prognosis of cloud formation, rainfall, energy levels reaching the surface, and air quality.
Rene Parra
doaj   +1 more source

LMDZ6A: The Atmospheric Component of the IPSL Climate Model With Improved and Better Tuned Physics

Journal of Advances in Modeling Earth Systems, 2020
This study presents the version of the LMDZ global atmospheric model used as the atmospheric component of the Institut Pierre Simon Laplace coupled model (IPSL‐CM6A‐LR) to contribute to the 6th phase of the international Coupled Model Intercomparison ...
Frédéric Hourdin, Catherine Rio, Jean‐Yves Grandpeix, Jean‐Baptiste Madeleine, Frédérique Cheruy, Nicolas Rochetin, Arnaud Jam, Ionela Musat, Abderrahmane Idelkadi, Laurent Fairhead, Marie‐Alice Foujols, Lidia Mellul, Abdoul‐Khadre Traore, Jean‐Louis Dufresne, Olivier Boucher, Marie‐Pierre Lefebvre, Ehouarn Millour, Etienne Vignon, Jean Jouhaud, F. Bint Diallo, François Lott, Guillaume Gastineau, Arnaud Caubel, Yann Meurdesoif, Josefine Ghattas   +24 more
doaj   +1 more source

Potential Predictability of the Madden‐Julian Oscillation in a Superparameterized Model

Geophysical Research Letters, 2023
The Madden‐Julian Oscillation (MJO) is a promising target for improving sub‐seasonal weather forecasts. Current forecast models struggle to simulate the MJO due to imperfect convective parameterizations and mean state biases, degrading their forecast ...
Sarah Weidman, Zhiming Kuang
doaj   +1 more source

Surrogate‐Optimized Flow‐Guided Miniature Condenser for Rapid Exhaled Glucose Detection

Advanced Materials Technologies, EarlyView.
A surrogate‐optimized miniature condenser guides humid exhaled flow toward cold surfaces to accelerate exhaled breath condensate collection. By improving vapor access within a compact footprint, the design increases sample yield. This enables post‐collection enrichment and rapid colorimetric glucose detection from dilute exhaled biomarkers within a 5 ...
Yiming Thomas Lu, Yamin Mansur, Sai Peri, Jiangyuan Wan, Amio Pronoy Das Ritwik, Emily L. Johnson, Jingcheng Ma   +6 more
wiley   +1 more source

Sensitivity of Coupled Tropical Pacific Model Biases to Convective Parameterization in CESM1

Journal of Advances in Modeling Earth Systems, 2018
Six month coupled hindcasts show the central equatorial Pacific cold tongue bias development in a GCM to be sensitive to the atmospheric convective parameterization employed.
M. D. Woelfle, S. Yu, C. S. Bretherton, M. S. Pritchard   +3 more
doaj   +1 more source

Fundamentals of Thermal Transport and Energy Conversion in Ultra‐High Temperature Ceramics: From Microscale Mechanisms to Macroscopic Properties

Advanced Science, EarlyView.
This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Zhipeng Pei, Yue Li, Jiayu Xing, Yue Zhu, Ru Zhang, Huan Wu, Zihao Qin, Gang Pei, Man Li   +8 more
wiley   +1 more source

A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks

Advanced Science, EarlyView.
Conceptual illustration of a Global Ecosystem Methane Observing System (GEM‐OS) integrating satellites, aircraft, atmospheric networks, and ecosystem measurements to quantify methane emissions from anthropogenic and natural sources. The multi‐scale observing framework improves source attribution, reduces uncertainty in regional methane budgets, and ...
P. Ciais, S. Peng, J. Chang, F. Li, Q. Zhu, K. Yuan, G. Hugelius, H. Li, Y. Cai, F. Chevallier, K. Tibrewal, E. A. Kort, K. Arndt, J. Watts, B. Buma, N. Besic, P. I. Palmer, H. Cadillo‐Quiroz, E. Euskirchen, M. J. Gondwe, A. Hoyt, R. Jackson, S. Malone, D. Monteverde, S. Natali, M. Ramonet, C. Rey‐Sanchez, L. B. Sagang, E. A. G. Schuur, R. Vargas, R. Varner, Z. Zhang, B. Poulter   +32 more
wiley   +1 more source