Role of surface heat fluxes underneath cold pools
Abstract
Abstract The role of surface heat fluxes underneath cold pools is investigated using cloud‐resolving simulations with either interactive or horizontally homogenous surface heat fluxes over an ocean and a simplified land surface. Over the ocean, there are limited changes in the distribution of the cold pool temperature, humidity, and gust front velocity, yet interactive heat fluxes induce more cold pools, which are smaller, and convection is then less organized. Correspondingly, the updraft mass flux and lateral entrainment are modified. Over the land surface, the heat fluxes underneath cold pools drastically impact the cold pool characteristics with more numerous and smaller pools, which are warmer and more humid and accompanied by smaller gust front velocities. The interactive fluxes also modify the updraft mass flux and reduce convective organization. These results emphasize the importance of interactive surface fluxes instead of prescribed flux boundary conditions, as well as the formulation of surface heat fluxes, when studying convection.
- Authors:
-
- Earth and Environmental Engineering, Earth Institute, School of Engineering and Applied Science Columbia University New York New York USA
- Earth and Environmental Sciences, Lamont Doherty Laboratory Columbia University New York New York USA
- Earth and Planetary Sciences Harvard University Cambridge Massachusetts USA
- Earth and Planetary Sciences and School of Engineering and Applied Sciences Harvard University Cambridge Massachusetts USA
- Publication Date:
- Research Org.:
- Columbia Univ., New York, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1235747
- Alternate Identifier(s):
- OSTI ID: 1235748; OSTI ID: 1435624
- Grant/Contract Number:
- DE‐SC0008720; DE‐SC0011094; DE‐SC0014203; SC0008720
- Resource Type:
- Published Article
- Journal Name:
- Geophysical Research Letters
- Additional Journal Information:
- Journal Name: Geophysical Research Letters Journal Volume: 43 Journal Issue: 2; Journal ID: ISSN 0094-8276
- Publisher:
- American Geophysical Union (AGU)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Gentine, Pierre, Garelli, Alix, Park, Seung‐Bu, Nie, Ji, Torri, Giuseppe, and Kuang, Zhiming. Role of surface heat fluxes underneath cold pools. United States: N. p., 2016.
Web. doi:10.1002/2015GL067262.
Gentine, Pierre, Garelli, Alix, Park, Seung‐Bu, Nie, Ji, Torri, Giuseppe, & Kuang, Zhiming. Role of surface heat fluxes underneath cold pools. United States. https://doi.org/10.1002/2015GL067262
Gentine, Pierre, Garelli, Alix, Park, Seung‐Bu, Nie, Ji, Torri, Giuseppe, and Kuang, Zhiming. Fri .
"Role of surface heat fluxes underneath cold pools". United States. https://doi.org/10.1002/2015GL067262.
@article{osti_1235747,
title = {Role of surface heat fluxes underneath cold pools},
author = {Gentine, Pierre and Garelli, Alix and Park, Seung‐Bu and Nie, Ji and Torri, Giuseppe and Kuang, Zhiming},
abstractNote = {Abstract The role of surface heat fluxes underneath cold pools is investigated using cloud‐resolving simulations with either interactive or horizontally homogenous surface heat fluxes over an ocean and a simplified land surface. Over the ocean, there are limited changes in the distribution of the cold pool temperature, humidity, and gust front velocity, yet interactive heat fluxes induce more cold pools, which are smaller, and convection is then less organized. Correspondingly, the updraft mass flux and lateral entrainment are modified. Over the land surface, the heat fluxes underneath cold pools drastically impact the cold pool characteristics with more numerous and smaller pools, which are warmer and more humid and accompanied by smaller gust front velocities. The interactive fluxes also modify the updraft mass flux and reduce convective organization. These results emphasize the importance of interactive surface fluxes instead of prescribed flux boundary conditions, as well as the formulation of surface heat fluxes, when studying convection.},
doi = {10.1002/2015GL067262},
journal = {Geophysical Research Letters},
number = 2,
volume = 43,
place = {United States},
year = {Fri Jan 22 00:00:00 EST 2016},
month = {Fri Jan 22 00:00:00 EST 2016}
}
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