The Relationship of Cloud Number and Size With Their Large-Scale Environment in Deep Tropical Convection
Abstract
Accurately representing the properties and impact of tropical convection in climate models requires an understanding of the relationships between the state of a convective cloud ensemble and the environment it is embedded in. We investigate this relationship using 13 years of radar observations in the tropics. Specifically, we focus on convective cell number and size and quantify their relationship to atmospheric stability, midtropospheric vertical motion and humidity. We find several key convective states embedded in their own unique environments. The most area-averaged rainfall occurs with a moderate number of moderate size convective cell in an environment of high humidity, strong vertical ascent, and moderate convective available potential energy (CAPE) and convective inhibition (CIN). The strongest rainfall intensities are found with few large cells. Those exist in a dry and subsiding environment with both high CAPE and CIN. Finally, large numbers of convective cells are associated with small CAPE and CIN, weak ascent, and a moist midtroposphere.
- Authors:
-
- Monash Univ., Clayton, VIC (Australia)
- Bureau of Meteorology, Melbourne, VIC (Australia)
- Monash Univ., Clayton, VIC (Australia); European X-ray Free Electron Laser Facility, Schenefeld (Germany)
- Monash Univ., Clayton, VIC (Australia); Bureau of Meteorology, Melbourne, VIC (Australia)
- Publication Date:
- Research Org.:
- Monash Univ., Melbourne, VIC (Australia)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1612067
- Alternate Identifier(s):
- OSTI ID: 1546871
- Grant/Contract Number:
- SC0014063
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Geophysical Research Letters
- Additional Journal Information:
- Journal Volume: 46; Journal Issue: 15; Journal ID: ISSN 0094-8276
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; geology; convection; tropics; radar; large scale
Citation Formats
Louf, Valentin, Jakob, Christian, Protat, Alain, Bergemann, Martin, and Narsey, Sugata. The Relationship of Cloud Number and Size With Their Large-Scale Environment in Deep Tropical Convection. United States: N. p., 2019.
Web. doi:10.1029/2019gl083964.
Louf, Valentin, Jakob, Christian, Protat, Alain, Bergemann, Martin, & Narsey, Sugata. The Relationship of Cloud Number and Size With Their Large-Scale Environment in Deep Tropical Convection. United States. https://doi.org/10.1029/2019gl083964
Louf, Valentin, Jakob, Christian, Protat, Alain, Bergemann, Martin, and Narsey, Sugata. Thu .
"The Relationship of Cloud Number and Size With Their Large-Scale Environment in Deep Tropical Convection". United States. https://doi.org/10.1029/2019gl083964. https://www.osti.gov/servlets/purl/1612067.
@article{osti_1612067,
title = {The Relationship of Cloud Number and Size With Their Large-Scale Environment in Deep Tropical Convection},
author = {Louf, Valentin and Jakob, Christian and Protat, Alain and Bergemann, Martin and Narsey, Sugata},
abstractNote = {Accurately representing the properties and impact of tropical convection in climate models requires an understanding of the relationships between the state of a convective cloud ensemble and the environment it is embedded in. We investigate this relationship using 13 years of radar observations in the tropics. Specifically, we focus on convective cell number and size and quantify their relationship to atmospheric stability, midtropospheric vertical motion and humidity. We find several key convective states embedded in their own unique environments. The most area-averaged rainfall occurs with a moderate number of moderate size convective cell in an environment of high humidity, strong vertical ascent, and moderate convective available potential energy (CAPE) and convective inhibition (CIN). The strongest rainfall intensities are found with few large cells. Those exist in a dry and subsiding environment with both high CAPE and CIN. Finally, large numbers of convective cells are associated with small CAPE and CIN, weak ascent, and a moist midtroposphere.},
doi = {10.1029/2019gl083964},
journal = {Geophysical Research Letters},
number = 15,
volume = 46,
place = {United States},
year = {2019},
month = {8}
}
Web of Science
Figures / Tables:

Works referenced in this record:
Stochastic Behavior of Tropical Convection in Observations and a Multicloud Model
journal, November 2013
- Peters, Karsten; Jakob, Christian; Davies, Laura
- Journal of the Atmospheric Sciences, Vol. 70, Issue 11
The Area-Time Integral as an Indicator for Convective Rain Volumes
journal, April 1984
- Doneaud, AndréA.; Ionescu-Niscov, Stefano; Priegnitz, David L.
- Journal of Climate and Applied Meteorology, Vol. 23, Issue 4
Constrained Variational Analysis of Sounding Data Based on Column-Integrated Budgets of Mass, Heat, Moisture, and Momentum: Approach and Application to ARM Measurements
journal, June 1997
- Zhang, M. H.; Lin, J. L.
- Journal of the Atmospheric Sciences, Vol. 54, Issue 11
A Test of the Strict Quasi-Equilibrium Theory on Long Time and Space Scales
journal, March 1997
- Brown, Randy G.; Bretherton, Christopher S.
- Journal of the Atmospheric Sciences, Vol. 54, Issue 5
Dual-Polarization Radar Rainfall Estimation over Tropical Oceans
journal, March 2018
- Thompson, Elizabeth J.; Rutledge, Steven A.; Dolan, Brenda
- Journal of Applied Meteorology and Climatology, Vol. 57, Issue 3
How Often Does It Rain?
journal, March 2006
- Sun, Ying; Solomon, Susan; Dai, Aiguo
- Journal of Climate, Vol. 19, Issue 6
An Overview of CMIP5 and the Experiment Design
journal, April 2012
- Taylor, Karl E.; Stouffer, Ronald J.; Meehl, Gerald A.
- Bulletin of the American Meteorological Society, Vol. 93, Issue 4
Mass-Flux Characteristics of Tropical Cumulus Clouds from Wind Profiler Observations at Darwin, Australia
journal, May 2015
- Kumar, Vickal V.; Jakob, Christian; Protat, Alain
- Journal of the Atmospheric Sciences, Vol. 72, Issue 5
Interaction of a Cumulus Cloud Ensemble with the Large-Scale Environment, Part I
journal, April 1974
- Arakawa, Akio; Schubert, Wayne Howard
- Journal of the Atmospheric Sciences, Vol. 31, Issue 3
On the Effects of Large-Scale Environment and Surface Types on Convective Cloud Characteristics over Darwin, Australia
journal, April 2013
- Kumar, Vickal V.; Protat, Alain; May, Peter T.
- Monthly Weather Review, Vol. 141, Issue 4
The Probability Density Function of Rain Rate and the Estimation of Rainfall by Area Integrals
journal, November 1994
- Sauvageot, Henri
- Journal of Applied Meteorology, Vol. 33, Issue 11
The Impact of Convection on ENSO: From a Delayed Oscillator to a Series of Events
journal, November 2008
- Neale, Richard B.; Richter, Jadwiga H.; Jochum, Markus
- Journal of Climate, Vol. 21, Issue 22
Further Studies of the Parameterization of the Influence of Cumulus Convection on Large-Scale Flow
journal, July 1974
- Kuo, H. L.
- Journal of the Atmospheric Sciences, Vol. 31, Issue 5
Relationships between Stability and Monsoon Convection
journal, January 1999
- McBride, John L.; Frank, William M.
- Journal of the Atmospheric Sciences, Vol. 56, Issue 1
Tropical Intraseasonal Variability in 14 IPCC AR4 Climate Models. Part I: Convective Signals
journal, June 2006
- Lin, Jia-Lin; Kiladis, George N.; Mapes, Brian E.
- Journal of Climate, Vol. 19, Issue 12
An Integrated Approach to Weather Radar Calibration and Monitoring Using Ground Clutter and Satellite Comparisons
journal, January 2019
- Louf, Valentin; Protat, Alain; Warren, Robert A.
- Journal of Atmospheric and Oceanic Technology, Vol. 36, Issue 1
Regimes of the North Australian Wet Season
journal, December 2009
- Pope, Mick; Jakob, Christian; Reeder, Michael J.
- Journal of Climate, Vol. 22, Issue 24
The Cumulus Parameterization Problem: Past, Present, and Future
journal, July 2004
- Arakawa, Akio
- Journal of Climate, Vol. 17, Issue 13
Multicloud Convective Parametrizations with Crude Vertical Structure
journal, May 2006
- Khouider, Boualem; Majda, Andrew J.
- Theoretical and Computational Fluid Dynamics, Vol. 20, Issue 5-6
Clouds, circulation and climate sensitivity
journal, March 2015
- Bony, Sandrine; Stevens, Bjorn; Frierson, Dargan M. W.
- Nature Geoscience, Vol. 8, Issue 4
Estimation of Areal Rainfall Using the Radar Echo Area Time Integral
journal, November 1989
- Lopez, Raul E.; Blanchard, David O.; Holle, Ronald L.
- Journal of Applied Meteorology, Vol. 28, Issue 11
Improved MJO-simulation in ECHAM6.3 by coupling a Stochastic Multicloud Model to the convection scheme: COUPLING THE SMCM TO ECHAM6.3
journal, January 2017
- Peters, Karsten; Crueger, Traute; Jakob, Christian
- Journal of Advances in Modeling Earth Systems, Vol. 9, Issue 1
Climatological Characterization of Three-Dimensional Storm Structure from Operational Radar and Rain Gauge Data
journal, September 1995
- Steiner, Matthias; Houze, Robert A.; Yuter, Sandra E.
- Journal of Applied Meteorology, Vol. 34, Issue 9
Heat and Moisture Budget Analyses Using BOMEX Data
journal, January 1974
- Nitta, Tsuyoshi; Esbensen, Steven
- Monthly Weather Review, Vol. 102, Issue 1
The estimation of convective rainfall by area integrals: 1. The theoretical and empirical basis
journal, January 1990
- Atlas, David; Rosenfeld, Daniel; Short, David A.
- Journal of Geophysical Research, Vol. 95, Issue D3
Stochastic Parameterization of Convective Area Fractions with a Multicloud Model Inferred from Observational Data
journal, February 2015
- Dorrestijn, Jesse; Crommelin, Daan T.; Siebesma, A. Pier
- Journal of the Atmospheric Sciences, Vol. 72, Issue 2
Revision of convection, radiation and cloud schemes in the ECMWF integrated forecasting system
journal, July 2000
- Gregory, D.; Morcrette, J. -J.; Jakob, C.
- Quarterly Journal of the Royal Meteorological Society, Vol. 126, Issue 566
A Stochastic Parameterization for Deep Convection Based on Equilibrium Statistics
journal, January 2008
- Plant, R. S.; Craig, G. C.
- Journal of the Atmospheric Sciences, Vol. 65, Issue 1
A data-driven method for the stochastic parametrisation of subgrid-scale tropical convective area fraction: Data-Driven Stochastic Subgrid-Scale Parameterisation for Tropical Convection
journal, October 2015
- Gottwald, Georg A.; Peters, Karsten; Davies, Laura
- Quarterly Journal of the Royal Meteorological Society, Vol. 142, Issue 694
Toward understanding the double Intertropical Convergence Zone pathology in coupled ocean-atmosphere general circulation models
journal, January 2007
- Zhang, Xuehong; Lin, Wuyin; Zhang, Minghua
- Journal of Geophysical Research, Vol. 112, Issue D12
The BMRC/NCAR C-Band Polarimetric (C-POL) Radar System
journal, August 1998
- Keenan, T.; Glasson, K.; Cummings, F.
- Journal of Atmospheric and Oceanic Technology, Vol. 15, Issue 4
Sensitivity of moist convection to environmental humidity
journal, October 2004
- Derbyshire, S. H.; Beau, I.; Bechtold, P.
- Quarterly Journal of the Royal Meteorological Society, Vol. 130, Issue 604
Beyond deadlock: BEYOND DEADLOCK
journal, November 2013
- Randall, David A.
- Geophysical Research Letters, Vol. 40, Issue 22
Stochastic and mesoscopic models for tropical convection
journal, February 2002
- Majda, A. J.; Khouider, B.
- Proceedings of the National Academy of Sciences, Vol. 99, Issue 3
Spread in model climate sensitivity traced to atmospheric convective mixing
journal, January 2014
- Sherwood, Steven C.; Bony, Sandrine; Dufresne, Jean-Louis
- Nature, Vol. 505, Issue 7481
A Unified Representation of Deep Moist Convection in Numerical Modeling of the Atmosphere. Part I
journal, July 2013
- Arakawa, Akio; Wu, Chien-Ming
- Journal of the Atmospheric Sciences, Vol. 70, Issue 7
A Scheme for Representing Cumulus Convection in Large-Scale Models
journal, November 1991
- Emanuel, Kerry A.
- Journal of the Atmospheric Sciences, Vol. 48, Issue 21
Entrainment and detrainment in cumulus convection: an overview
journal, June 2012
- de Rooy, Wim C.; Bechtold, Peter; Fröhlich, Kristina
- Quarterly Journal of the Royal Meteorological Society, Vol. 139, Issue 670
Observed Large-Scale Structures and Diabatic Heating and Drying Profiles during TWP-ICE
journal, January 2010
- Xie, Shaocheng; Hume, Timothy; Jakob, Christian
- Journal of Climate, Vol. 23, Issue 1
Determination of Bulk Properties of Tropical Cloud Clusters from Large-Scale Heat and Moisture Budgets
journal, May 1973
- Yanai, Michio; Esbensen, Steven; Chu, Jan-Hwa
- Journal of the Atmospheric Sciences, Vol. 30, Issue 4
Large-Scale Dynamical Response to Subgrid-Scale Organization Provided by Cellular Automata
journal, December 2011
- Bengtsson, Lisa; Körnich, Heiner; Källén, Erland
- Journal of the Atmospheric Sciences, Vol. 68, Issue 12
Relationships between the large-scale atmosphere and the small-scale convective state for Darwin, Australia: RELATIONSHIPS BETWEEN SCALES AT DARWIN
journal, October 2013
- Davies, L.; Jakob, C.; May, P.
- Journal of Geophysical Research: Atmospheres, Vol. 118, Issue 20
Advances in simulating atmospheric variability with the ECMWF model: From synoptic to decadal time-scales
journal, July 2008
- Bechtold, Peter; Köhler, Martin; Jung, Thomas
- Quarterly Journal of the Royal Meteorological Society, Vol. 134, Issue 634
Advances in simulating atmospheric variability with the ECMWF model: from synoptic to decadal time-scales
text, January 2008
- Bechtold, Peter; Köhler, M.; Jung, T.
- ECMWF
Figures / Tables found in this record: