Results 21 to 30 of about 5,044 (260)

Trimodal Characteristics of Tropical Convection [PDF]

Journal of Climate, 1999
It has long been known that trade wind cumulus and deep cumulonimbus represent primary components of the broad spectrum of cumulus clouds in the Tropics, which has led to the concept of a bimodal distribution of tropical clouds. However, recent analyses of shipboard radar data from Tropical Ocean Global Atmosphere Coupled Ocean‐Atmosphere Response ...
Richard H. Johnson, Thomas M. Rickenbach, Steven A. Rutledge, Paul E. Ciesielski, Wayne H. Schubert   +4 more
openaire   +1 more source

Mesoscale convective clustering enhances tropical precipitation

Science Advances, 2023
In the tropics, extreme precipitation events are often caused by mesoscale systems of organized, spatially clustered deep cumulonimbi, posing a substantial risk to life and property. While the clustering of convective clouds has been thought to strengthen precipitation rate, no quantitative estimates of this hypothesized enhancement exist.
Pedro Angulo-Umana, Daehyun Kim
openaire   +2 more sources

Improved MJO‐simulation in ECHAM6.3 by coupling a Stochastic Multicloud Model to the convection scheme

Journal of Advances in Modeling Earth Systems, 2017
We implement a Stochastic Multicloud Model (SMCM) in an observation‐informed configuration into the convection scheme of the state‐of‐the‐art GCM ECHAM6.3.
Karsten Peters, Traute Crueger, Christian Jakob, Benjamin Möbis   +3 more
doaj   +1 more source

Convective Precipitation Efficiency Observed in the Tropics

Geophysical Research Letters, 2019
AbstractPrecipitation efficiency refers to the fraction of condensate in the atmosphere that reaches the surface as precipitation. A high‐quality data set of radar‐estimated precipitation rates and convective scale vertical velocity near Darwin, Australia, is used to construct the first estimate of precipitation efficiency at convective scales for a ...
Narsey, S., Jakob, C., Singh, M., Bergemann, M., Louf, V., Protat, A., Williams, C.   +6 more
openaire   +2 more sources

Vertical Resolution Impacts Explicit Simulation of Deep Convection

Journal of Advances in Modeling Earth Systems, 2023
The aggregation of tropical convection greatly influences the mean‐state of the atmosphere, altering humidity distributions, total atmospheric radiative cooling, and cloud amounts.
A. M. Jenney, S. L. Ferretti, M. S. Pritchard   +2 more
doaj   +1 more source

Impact of Domain Size on Tropical Precipitation Within Explicit Convection Simulations

Geophysical Research Letters, 2023
We investigate the sensitivity of modeled tropical precipitation accumulation, intensity and structures to the extent of convection‐permitting limited area model (LAM) domain size.
Richard W. Jones, Claudio Sanchez, Huw Lewis, James Warner, Stuart Webster, Joshua Macholl   +5 more
doaj   +1 more source

A coarsening model for self‐organization of tropical convection [PDF]

Journal of Geophysical Research: Atmospheres, 2013
If the influence of humidity on cumulus convection causes moist regions of the tropical troposphere to become moister and dry regions to become drier, and if horizontal mixing of moisture is not rapid enough to overcome this tendency, then the atmosphere will tend to separate into increasingly large moist and dry regions through a process of coarsening.
Craig, G., Mack, J. ; https://orcid.org/0000-0003-2554-1404   +1 more
openaire   +2 more sources

The Convective Transport of Active Species in the Tropics (CONTRAST) Experiment [PDF]

Bulletin of the American Meteorological Society, 2017
Abstract The Convective Transport of Active Species in the Tropics (CONTRAST) experiment was conducted from Guam (13.5°N, 144.8°E) during January–February 2014. Using the NSF/NCAR Gulfstream V research aircraft, the experiment investigated the photochemical environment over the tropical western Pacific (TWP) warm pool, a region of ...
Pan, L. L., Atlas, E. L., Salawitch, R. J., Honomichl, S. B., Bresch, J. F., Randel, W. J., Apel, E. C., Hornbrook, R. S., Weinheimer, A. J., Anderson, D. C., Andrews, S. J., Baidar, S., Beaton, S. P., Campos, T. L., Carpenter, Lucy Jane, Chen, D., Dix, B., Donets, V., Hall, S. R., Hanisco, T. F., Homeyer, C. R., Huey, L. G., Jensen, J. B., Kaser, L., Kinnison, D. E., Koenig, T. K., Lamarque, J. F., Liu, C., Luo, J., Luo, Z. J., Montzka, D. D., Nicely, J. M., Pierce, R. B., Riemer, D. D., Robinson, T., Romashkin, P., Saiz-Lopez, A., Schauffler, S., Shieh, O., Stell, M. H., Ullmann, K., Vaughan, G., Volkamer, R., Wolfe, G.   +43 more
openaire   +7 more sources

Convectively Generated Gravity Waves in High Resolution Models of Tropical Dynamics

Journal of Advances in Modeling Earth Systems, 2018
We investigate numerical models that display the transition of global climate modeling from coarse grids, at which convection and gravity waves are still parameterized, toward finer resolutions, where both are treated explicitly.
Sebastian K. Müller, Elisa Manzini, Marco Giorgetta, Kaoru Sato, Tomoe Nasuno   +4 more
doaj   +1 more source

Impact of tropical convective conditions on solar irradiance forecasting based on cloud motion vectors

Environmental Research Letters, 2022
Intra-day forecasts of global horizontal solar irradiance (GHI) are widely produced by displacing existing clouds on a geo-stationary satellite image to their future locations with cloud motion vectors (CMVs) derived from preceding images.
Arindam Roy, Annette Hammer, Detlev Heinemann, Ontje Lünsdorf, Jorge Lezaca   +4 more
doaj   +1 more source