Results 271 to 280 of about 246,652 (294)

Mean Cold Pool Size of Quasi-Equilibrium Convection. Part I: Why Do Cold Pools Collide?

Journal of the Atmospheric Sciences
Abstract Precipitation-driven cold pools play an important role in organizing tropical convection. Previous studies of tropical convection in the radiative–convective equilibrium (RCE) setup found that cold pools tend to collide with each other and trigger new convection.
Hao Fu, Morgan E O’Neill
openaire   +1 more source

Cold pool propagation and cold pool-land surface interactions

Convective cold pools are important components of the Earth system as they influence processes such as deep convective initiation, storm longevity and intensity, surface energy fluxes, and aerosol transport. The overarching goal of the research outlined in this dissertation is to investigate the propagation characteristics of cold pools, as well as the
Falk, Nicholas Michael, van den Heever, Susan C., Grant, Leah D., Bell, Michael M., Schumacher, Russ S., Venayagamoorthy, Subhas K.   +5 more
openaire   +1 more source

A Lagrangian perspective on cold pool collisions

2020
<p>Collisions represent one of the most important processes through which cold pools—essential boundary layer features of precipitating systems—help to organize convection. For example, by colliding with one another, expanding cold pools can trigger new convective cells, a process that has been argued ...
Giuseppe Torri, Zhiming Kuang
openaire   +1 more source

Self-aggregation conceptualized by cold pool organization

2020
<p>In radiative-convective equilibrium (RCE) simulations, self-aggregation is the spontaneous emergence of one or several long-lasting convective clusters from an apparently homogenous atmosphere (Wing, 2019). This phenomenon may implicate the formation of tropical cyclones (Wing et al., 2016; Muller et al., 2018) and large-scale
Silas Boye Nissen, Jan O. Haerter
openaire   +1 more source

The story of a cold pool

Weather, 2009
AbstractMuch of southern Britain recorded its heaviest snowfall for many years during the first week of February 2009. This Weather Image briefly describes how a cold pool was responsible for much of the snow, and tracks its movement.
openaire   +1 more source

Convective Cold Pools and Tropical Cyclones

Monthly Weather Review
Abstract Convective cold pools (CPs) are inherent to mesoscale convective systems and have been identified in tropical cyclone (TC) eyewalls and rainbands. However, their distribution within TCs and their impacts on the TC enthalpy balance are not well understood. This gap is due to the scarcity of high-frequency observations over the ocean.
Nguyen Dac Da, Gregory R. Foltz, Jun A. Zhang, Dongxiao Zhang   +3 more
openaire   +1 more source

Modeling of pool fires in cold regions

Fire Safety Journal, 2012
Abstract Fires and especially pool fires are among the most frequent accidents in process facilities. Flame impingement and thermal radiation are the main hazardous characteristics of pool fires. Pool fires have been the subject of numerous modeling and experimental studies covering a variety of areas such as fire and flame structure, emissive power,
Gaffar Keshavarz, Faisal Khan, Kelly Hawboldt   +2 more
openaire   +1 more source

Sub-mesoscale observations of cold pools during FESSTVaL

2020
<p>Cold pools are areas of cool downdraft air that form through evaporation underneath precipitating clouds and spread on the surface as density currents. Their importance for the development and maintenance of convection is long known.
Bastian Kirsch, Felix Ament, Cathy Hohenegger, Daniel Klocke   +3 more
openaire   +1 more source

On gust characteristics of cold pools 

Cold pools are mesoscale atmospheric phenomena associated with showers and thunderstorms, they are characterized by a sudden temperature drop, pressure jump and strong gusty winds. At their edges, cold pools may trigger the onset of deep convection. Many studies focused on the temperature distribution and dynamics associated with cold pools while the ...
Teika Hutzfeldt, Felix Ament, Frank Beyrich   +2 more
openaire   +1 more source

Do Cold Pools Propagate according to Theory?

Journal of the Atmospheric Sciences
Abstract This study evaluates a popular density current propagation speed equation using a large, novel set of radiosonde and dropsonde observations. Data from pairs of sondes launched inside and outside of cold pools along with the theoretical density current propagation speed equation are used to calculate sonde-based propagation speeds.
Nicholas M. Falk, Leah D. Grant, Susan C. van den Heever, Benjamin D. Ascher, Tyler W. Barbero, Charles M. Davis, Jacob A. Escobedo, Sean W. Freeman, Brian K. Heffernan, Gabrielle R. Leung, Alexandra C. Mazurek, Christine A. Neumaier, Erin A. Sherman, G. Alexander Sokolowsky, Daniel Veloso-Aguila, Paul J. DeMott, Sonia M. Kreidenweis, Russell J. Perkins, Elizabeth A. Stone   +18 more
openaire   +1 more source