Results 71 to 80 of about 29,399 (298)

A linear CO chemistry parameterization in a chemistry-transport model: evaluation and application to data assimilation [PDF]

, 2010
This paper presents an evaluation of a new linear parameterization valid for the troposphere and the stratosphere, based on a first order approximation of the carbon monoxide (CO) continuity equation. This linear scheme (hereinafter noted LINCO) has been
Attie, J. -L., Cammas, J. -P., Cariolle, D., Claeyman, M., Edwards, D. P., El Amraoui, L., Josse, B., Livesey, N. J., Massart, S., Peuch, V. -H., Piacentini, A., Pumphrey, Hugh, Ricaud, P., Teyssedre, H.   +13 more
core   +5 more sources

How Well Do CMIP6 Models Simulate the Influence of the West African Westerly Jet on Sahel Precipitation?

International Journal of Climatology, EarlyView.
Climate models generally reproduce the WAWJ and August peak but simulate its onset prematurely and too strongly relative to ERA5. CMIP6 simulations struggle to reproduce the jet–precipitation relationship in the Sahel and underrepresent associated moisture transports.
Akintunde I. Makinde, Babatunde J. Abiodun, Rachel James, Richard Washington, Ellen Dyer, Tom Webb   +5 more
wiley   +1 more source

Are West African Heat‐Lows Analogous to Dry Tropical Cyclones?

International Journal of Climatology, EarlyView.
Heat‐lows qualitatively resemble dry tropical cyclones (TCs), though their underlying physics has yet to be compared. In this study, we show that West African transient heat‐low climatology correlates well with TC potential intensity generalised over land.
Aaron Kruskie, Daniel Chavas, Matthew Huber   +2 more
wiley   +1 more source

Model Sensitive in Numerical of the Formation of Typhoon Robyn (1993)

Terrestrial, Atmospheric and Oceanic Sciences, 2006
The PSU-NCAR mesoscale model MM5 with an 81-km (27-km) resolution coarse (fine) grid is used to simulate the formation of Typhoon Robyn (1993) in the western North Pacific. This study examines the roles of mesoscale convective system (MCS) during Robyn’s
Kevin K. W. Cheung Russell L. Elsberry
doaj   +1 more source

Turbulent Chemical Diffusion in Convectively Bounded Carbon Flames [PDF]

, 2016
It has been proposed that mixing induced by convective overshoot can disrupt the inward propagation of carbon deflagrations in super-asymptotic giant branch stars.
Bildsten, Lars, Brown, Benjamin P., Burns, Keaton J., Lecoanet, Daniel, Oishi, Jeffrey S., Quataert, Eliot, Schwab, Josiah, Timmes, F. X., Vasil, Geoffrey M.   +8 more
core   +2 more sources

Linking Process‐Induced Degradation to Mechanical Property Deterioration in Flax Fiber–Reinforced Bio‐Polymer Matrix Composites

Polymer Composites, EarlyView.
Effect of processing‐induced thermal degradation on the mechanical performance of thermoplastic flax fiber composites. ABSTRACT The drawback of biobased polymer matrix composites (PMCs) is their limited temperature stability, resulting from degradation, which restricts their processability in established composite manufacturing processes requiring ...
Dimitrios Apostolidis, Prajwal Jayaraman, Clemens A. Dransfeld, Baris Kumru, Niklas Lorenz   +4 more
wiley   +1 more source

Earth System Modeling 2.0: A Blueprint for Models That Learn From Observations and Targeted High-Resolution Simulations [PDF]

, 2017
Climate projections continue to be marred by large uncertainties, which originate in processes that need to be parameterized, such as clouds, convection, and ecosystems. But rapid progress is now within reach.
Lan, Shiwei, Schneider, Tapio, Stuart, Andrew, Teixeira, João   +3 more
core   +2 more sources

Growth of Spread in Convection-Allowing and Convection-Parameterizing Ensembles

Weather and Forecasting, 2010
Abstract During the 2007 NOAA Hazardous Weather Testbed Spring Experiment, a 10-member 4-km grid-spacing Storm-Scale Ensemble Forecast (SSEF) system was run in real time to provide experimental severe weather forecasting guidance. Five SSEF system members used perturbed initial and lateral boundary conditions (ICs and LBCs) and mixed ...
Clark, Adam, Gallus, William, Xue, Ming, Kong, Fanyou   +3 more
openaire   +3 more sources

Dynamics and model representation of two contrasting extreme precipitation events in the Sahel

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Hovmöller diagrams of the two investigated extreme precipitation events in Mali are shown for (i) IMERG observations, and ICOsahedral Nonhydrostatic model (ICON) runs with parameterization of explicit convection (ii) enabled and (iii) disabled. This work highlights that the commonly perceived benefit of using explicit convection in a state‐of‐the‐art ...
Souleymane Sanogo, Marlon Maranan, Andreas H. Fink, Beth J. Woodhams, Peter Knippertz   +4 more
wiley   +1 more source

Machine‐learning approaches for characterizing the raindrop size distributions in Western Pacific tropical cyclones

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Long‐term disdrometer observations are utilized to derive Z–R relationships for ‐the Western Pacific tropical cyclones. A hybrid moment‐based approach is employed to determine the interrelationships among pairs of gamma distribution parameters. Enhanced estimates of rainfall rate and slope parameter are obtained using machine‐learning techniques ...
Jayalakshmi Janapati, Balaji Kumar Seela, Spandana Vadloori, Pay‐Liam Lin, Chuan‐Chi Tu, Everette Joseph   +5 more
wiley   +1 more source