Thermodynamic features affecting convective cloud growth and dynamic seeding

a comparative summary of HIPLEX soundings, 1975 to 1977 by Matthews, David A.

Publisher: U.S. Dept. of the Interior, Bureau of Reclamation, Office of Atmospheric Resources Research, Division of Research in Denver, Colo

Written in English
Published: Pages: 198 Downloads: 579
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  • Weather control -- United States.,
  • Cloud physics.

Edition Notes

Other titlesA comparative summary of HIPLEX soundings, 1975 to 1977.
Statementby David A. Matthews.
ContributionsUnited States. Office of Atmospheric Resources Research.
The Physical Object
Paginationvii, 198 p. :
Number of Pages198
ID Numbers
Open LibraryOL17656920M

CCFM - Convective Cloud Field Model. Looking for abbreviations of CCFM? It is Convective Cloud Field Model. Convective Cloud Field Model listed as CCFM convective cloud; Convective Cloud Field Model; convective clouds; Convective condensation level; convective current; convective discharge; convective discharge;. This research has been funded through the Fonds National de la Recherche (FNR), Luxembourg, under the grant BFR, and supported by the Luxembourgish Ministry for Higher Education and Research through CEDIES, by the Cambridge European Trust (CET) and the National Environment Research Council (NERC), UK, as well as by Prof. Hans-F. Graf. The pressure perturbation field in a convective cloud is governed by: When vortices form in storms, this term requires a low pressure at the center of each vortex. These low pressure centers affect the storm dynamics by producing a pressure field in the storm that is different from that produced by buoyancy alone. Pressure Perturbation. with the warm cloud seeding experiments conducted by the Indian Institute of Tropical Meteorology, Pune, over the Deccan Plateau region. Each year the obser­ vations were made daily during convective conditions between and hrs IST from the last week of June to the first week of September. There are, in all.

Confidential manuscript submitted to JAMES 1 Clouds, Circulation, and Climate Sensitivity in a 2 Radiative-Convective Equilibrium Channel Model Timothy W. Cronin1, Allison A. Wing 2;3 3 4 1Department of Earth, Atmospheric, and Planetary Science, MIT, Cambridge, MA 5 2Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 6 3Department of Earth, File Size: 1MB. The convective cloud feedback theory explains a way in which heat could be trapped in the high latitudes through the development of high-altitude convective clouds. Dorian Abbot and Eli Tziperman introduced this theory in and claimed that during equable climates, changes to the climate system only changed the polar climate. RESEARCH ARTICLE /MS Convective aggregation in realistic convective-scale simulations Christopher E. Holloway1 1Department of Meteorology, University of Reading, Reading, UK Abstract To investigate the real-world relevance of idealize d-model convective self-aggregation, five 15 day cases of real organized convection in the tropics are sim ulated. The Sensitivity of Convective Initiation to the Lapse Rate of the Active Cloud-Bearing Layer conducted in which the response of cloud growth to various environmental lapse rates was tested. Varia- and shares many features. A full description of ICOMMAS is documented by File Size: 2MB.

The humidity of the mid troposphere has a significant effect on the development of deep convection. Dry layers (dry intrusions) can inhibit deep convection through the effect of a thermal inversion resulting from radiation and due to the reduction in buoyancy resulting from entrainment. Recent observations have shown that the sensitivity of cloud top height to changes in mid Cited by: 2. 1 | P a g e Thermodynamic Network Observation Assimilation for Improved Convective Prediction Randolph Ware, Founder & Chief Scientist, [email protected] Kimberly Reed, Atmospheric Scientist, @ Tim Wilfong, Atmospheric Scientist, [email protected] Radiometrics ( ), Nautilus Ct N#, Boulder . U. Schumann et al.: Cloud-shadowsand convective boundary layer Meteorol. Z.,11, pected. One may even conceive the possibility that an inclined shadow for a sun outside the zenith causes a preference for convective circulation in a certain direc-tion,which inturn could driveahorizontal motion either in the direction of or opposite to the.   A comprehensive assessment of the methodologies of thermodynamic optimization, exergy analysis and thermoeconomics, and their application to the design of efficient and environmentally sound energy systems. The chapters are organized in a sequence that begins with pure thermodynamics and Price: $

Thermodynamic features affecting convective cloud growth and dynamic seeding by Matthews, David A. Download PDF EPUB FB2

Get this from a library. Thermodynamic features affecting convective cloud growth and dynamic seeding: a comparative summary of HIPLEX soundings, to [David A Matthews; United States. Office of Atmospheric Resources Research.]. Matthews, D.

A., Natural variability of thermodynamic features affecting convective cloud growth and dynamic seeding: A comparative summary of three High Plains sites from to J.

Appl. Meteor., 20, – CrossRef Google ScholarCited by: 4. Therefore, it is difficult to determine the part of cloud variations that results from a change in the dynamics from the part that may result from the temperature change itself.

This study proposes a simple framework to unravel the dynamic and non-dynamic (referred to as thermodynamic) components of the cloud response to climate by: [1] Extreme precipitation has been projected to increase more than the mean under future changed climate, but its mechanism is not clear.

We have separated the ‘dynamic’ and ‘thermodynamic’ components of the mean and extreme precipitation changes projected in 6 climate model by: The clouds are what make the sky look so interesting. To many, all clouds look the same - but as soon as one begins to study the vast number of possible cloud forms and varieties, one realizes that there is more to discover than there is time to observe.

Convective clouds Much of the UK's most damaging weather involves clouds which 'bubble up' from near the surface when a layer of cool air lies above a layer of relatively hot, moist air. Convective Clouds: Clouds formed atop rising air s clouds are convective clouds.

Convective clouds: are heaped or puffy in appearance with exhibiting significant. Dynamic precipitation tends to have a less intense rain rate than convective precipitation and also tends to last longer.

Convective precipitation is also known as thermodynamic precipitation. While dynamic precipitation only needs saturated air and lift, convective precipitation requires an additional component called instability.

Cloud Seeding, Convective Clouds, Olympics 1. Introduction It is possible to influence local precipitation through artificial seeding: a small amount of catalysts or stirring dynamical impacts inside clouds, and sometimes How to cite this paper: Li, H.Y., Dai, Y.P., Wang, H.

and, ( 7) Artificial Seeding Effects of Convective Clouds on. cloud droplet activation process. Takahashi (a) used the size distribution of cloud droplets near cloud base calculated by a one dimensional cloud model (Takahashi, b) as the input initial cloud droplet distribution in his 2D cloud approach has a merit of low computational cost but it has several problems.

First of all, the initial droplet distribution is fixed Cited by: 5. With the implementation of the improved approach in a cloud model, the aerosol effects on ice microphysics in convective cloud and precipitation development under different thermodynamic.

Thermodynamic, cloud microphysics, and precipitation budgets are then calculated from the zonally averaged and vertically integrated data at hourly intervals from these experiments.

Results show the generation of larger differences in the cloud hydrometeors and surface rain rates, with the given PW by: Contrary to the small CAPE run, however, the maximum updraft and cloud top were somewhat higher in the continental than in the maritime cloud, consistent with the radar observation (Alcala and Dessler, ) and Khain's et al.

() model results, which suggested that faster growth to large precipitation particles in the maritime clouds Cited by: 6. A Composite Analysis of the Dynamic and Thermodynamic Structure and Evolution of Tropical Convective Systems Investigation of Cloud Systems in the Tropics (PRE-DICT), and NASA Hurricane and Severe Storm Sen- group will enable the identification of dynamic and thermodynamic features of interest (e.g., upper-level trough axis, dry air.

The scientific evidence for enhancing rainfall from convective clouds by static-mode and dynamic-mode seeding with glaciogenic agents is examined and critically assessed. Cloud, thermodynamic, and precipitation observations in West Africa during Pavlos Kollias,1 Mark A.

Miller,2 Karen L. Johnson,3 Michael P. Jensen,3 and David T. Troyan3 Received 20 June ; revised 17 February ; accepted 10 March ; published 27 June sional model for the cloud seeding in low levels.

Wakimizu et al. () investigated the LCO 2 seeding effects on the supercooled convective cloud in northern Kyushu in Japan in Through the applications of the recorded radar data, artificial radar, and thermodynamic diagrams, they confirmed the formation of the secondary cumulus.

Deep convective cloud top heights and their thermodynamic control during CRYSTAL-FACE space-based platforms to investigate the growth and decay of upper-tropospheric cloud decks [Jensen et al., ]. Here, we characterize the distribution of deep convective cloud-top.

Start studying Ch. 9 Thunderstorms. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Deep convective cloud top heights and their thermodynamic control during CRYSTAL-FACE Steven C.

Sherwood of Florida-area deep convective cloud top height and test predictions as to its variation based associated with about 1 km deeper maximum cloud penetration relative to the neutral level.

Randomized convective cloud seeding experiment in extended areas in Cuba (EXPAREX) and acts to spur additional cloud growth.

The revised dynamic seeding concept can be summarized as a hypothesized simplified chain of events, as follows: Thermodynamic fluctuation complex. The thermodynamic fluctuation complex (TFC) is designed to measure. Satellite detection of severe convective storms by their retrieved vertical profiles of cloud particle effective radius and thermodynamic phase Daniel Rosenfeld,1 William L.

Woodley,2 Amit Lerner,1 Guy Kelman,1 Therefore the V-shape feature is a dynamic manifestation. Deep convective cloud-top heights and their thermodynamic control during CRYSTAL-FACE Steven C.

Sherwood Department of Geology and Geophysics, Yale University, New Haven, Connecticut, USA Patrick Minnis NASA/Langley Research Center, Hampton, Virginia, USA Matthew McGill NASA/Goddard Space Flight Center, Greenbelt, Maryland, USA.

In recent long-term cloud-resolving modeling (more than 1 week) studies, Li et al. () used the improved schemes of the growth of cloud ice by the Bergeron process and the conversion of cloud ice to snow by Krueger et al. () in a cloud-resolving model and found that enhancement of the mixing ratio of cloud ice led to better simulations Cited by: modelled cloud top heights are highly correlated (r=) for a large number of different cases.

The model is a steady state Lagrangian solution of a set of equations for temper-ature, cloud radius, vertical velocity, cloud water/ice and rain water/ice.

The thermodynamic and dynamic calcula-tions are numerical analogies of the classical parcel Cited by: the rate of convective cloud growth, or depth changes. The and min cloud-top cooling rates measured through mm T B values are quite important as well for estimating cumulus growth (Roberts and Rutledge ), because they are indicators of in-cloud updraft strength (see Adler and Fenn ).

Recent work shows. Introduction Background. Each year, approximately 80 tropical cyclones (TCs) form over the world's oceans. Determination of how TC frequency and location will fluctuate with climate change is important as a large fraction of the world's population and resources are located in regions susceptible to the high winds, heavy precipitation, storm surge, and inland flooding Cited by:   The main purpose of this study is to underline the sensitivity of cloud liquid water content (LWC) estimates purely to 1) the shape of computationally simplified temperature-dependent thermodynamic phase and 2) the range of subzero temperatures covered to partition total cloud condensate into liquid and ice by: 7.

cloud-droplet effective size (Herman and Goody ; Curry ). Therefore, the net radiative cooling of a cloud top in the vicinity of a temperature inversion could increase the static stability across the inversion base. This distinct thermodynamic relationship between Arctic cloud top and the temperature inversion is the object of this study.

The thermodynamic structure on top of a numerically simulated severe storm is examined to explain the satellite observed plume formation above thunderstorm anvils.

The same mechanism also explains the formation of jumping cirrus observed by Fujita on board of a research aircraft. A three-dimensional, non-hydrostatic cloud model is used to.

[1] Aerosol‐cloud interaction is recognized as one of the key factors influencing cloud properties and precipitation regimes across local, regional, and global scales and remains one of the largest uncertainties in understanding and projecting future climate changes.

Deep convective clouds (DCCs) play a crucial role in the general circulation, energy balance, and hydrological cycle of. thermodynamic efficiency of simulated tropical cyclones with increasing SST. Figure 4 Vertical profiles of (a) temperature and (b) cloud fraction for different SSTs in RCE with (solid lines) and without rotation (dashed lines).

Note that in b) the temperature rather than height is used as the vertical coordinate. defined by (4).lake CBL growth. The local microphysical and CBL changes in seeded regions of the CBL are given in sec-tion 4.

Discussion and conclusions are given in sections 5 and 6. 2. Data and methodology The goals of the current study are to investigate 1) the cross-lake CBL growth, 2) local variations in CBL depth associated with natural cloud seeding.THERMODYNAMIC CONTROL OF TROPICAL RAIN deficit in the convective region by assuming that R = R(x).Let us give this a definite form with the assumption that R = Roxo/x (13) where Ro is the rainfall rate under a reference condition, which we take to be that associated with radiative-convective equilibrium, and the constant xo is the value of x.