Observational Evidence of Cell Flatness as a Function of Convective Depth and Eddy Anisotropy

Agee, Ernest M.

doi:10.2151/jmsj1965.54.1_68

Cited by 15 publications

(12 citation statements)

References 14 publications

(14 reference statements)

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“…Thus they can be said to be a typical case of convective cloud formation when a continental anticyclonic air mass broke out on a warm sea of the KUROSHIO current. The higher and colder cloud layer that appeared in the northern part of the AMTEX area on 22nd Feb. was discussed by Agee (1976) as a typical case of open cell structure.…”

Section: Analysis From Aerological Datamentioning

confidence: 98%

“…2. This case was described by Agee (1976) as that of the cloud appearance of an open cell structure. Here we should like to notice that the open cell structure is more or less restricted to the northern part near Korea and the Kagoshima district and the structure of the southern part near Okinawa shows that of closed cells.…”

Section: Consideration From Satellite Datamentioning

confidence: 99%

“…( 3) The closed (open) cell regression line was drawn only below 1 km level (above 2 km level) in the figure by Agee (1976) showing the relation between cell flatness and the convection depth.…”

Section: Analysis From Aerological Datamentioning

confidence: 99%

“…Assuming that these heights can be combined with the respective cell diameters, the cell flatness as defined by the ratio of cell diameter to depth (D/h) becomes 9 and 10 respectively. Agee (1976) has made extensive statistics on the phenomenon and has obtained the fact that the cell flatness decreases as the depth of the mixing layer increases. This controversial tendency is seen in Fig.…”

Section: Cell Diameter and Cell Flatnessmentioning

confidence: 99%

See 3 more Smart Citations

On the Formation of Convective Cloud Cells during Cold Air Outbreaks in AMTEX '75

Sekihara

Suzuki

Murai³

1978

Pap.Met.Geophy

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Section: Analysis From Aerological Datamentioning

confidence: 98%

Section: Consideration From Satellite Datamentioning

confidence: 99%

Section: Analysis From Aerological Datamentioning

confidence: 99%

Section: Cell Diameter and Cell Flatnessmentioning

confidence: 99%

See 2 more Smart Citations

On the Formation of Convective Cloud Cells during Cold Air Outbreaks in AMTEX '75

Sekihara

Suzuki

Murai³

1978

Pap.Met.Geophy

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“…A statistical study by Agee (1976) shows that the sizes of the convective cells are a function of the CBL depth and the total flux of sensible heat and latent heat from the water surface. Figure 3 illustrates that the simulated depth of the CBL is only slightly higher than the observed depth at Keifu.…”

Section: Cloud Configurationmentioning

confidence: 99%

Numerical study of mesoscale cellular convection

Hsu

Sun

1991

Boundary-Layer Meteorol

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Mesoscale cellular convections over the East China Sea during cold air outbreaks are simulated with a high-resolution numerical model. The model incorporates important physical processes involved in shallow convection, such as the exchange of heat and moisture between water and air; condensation; evaporation; and vertical turbulent transfer of heat, moisture, and momentum.The results show that open cells develop with aspect ratios as large as 14. The structure of the convection is examined in detail. The organized mesoscale circulation is responsible for breaking up the initial stratus cloud deck and enhancing turbulence in the upward-moving area (especially inside cumulus clouds). However, it is found that the heat flux contributed by MCC's themselves is much smaller than the eddy heat flux.

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Cellular convection over the north‐eastern Atlantic

Bakan

Schwarz

1992

Intl Journal of Climatology

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Convective clouds over the ocean frequently exhibit organized meso-scale patterns. A statistical evaluation of 4 years of NOAA satellite images over the north-eastern Atlantic yields climatological data of the appearance of these patterns and shows that open cellular convection is most abundant. For this convection type, surface and radiosonde data from Weathership M have been analysed. Open convection cells appear at a wide range of positive sea-air temperature differences up to 12"C.and at wind speeds up to 25 ms-'. All diameters have been found to be less than 80 km (average 41 km). Larger diameters are, on average, associated with slightly larger convection heights and, thus, with larger aspect ratios.The scene-averaged brightness temperature of AVHRR channel 4 exhibits a definite correlation with the sea-air temperature difference and,less well expressed, with the sensible and latent heat flux. This, in turn, provides a possibility of estimating those quantities by using easily accessible AVHRR satellite data.

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Observational Evidence of Cell Flatness as a Function of Convective Depth and Eddy Anisotropy

Cited by 15 publications

References 14 publications

On the Formation of Convective Cloud Cells during Cold Air Outbreaks in AMTEX '75

On the Formation of Convective Cloud Cells during Cold Air Outbreaks in AMTEX '75

Numerical study of mesoscale cellular convection

Cellular convection over the north‐eastern Atlantic

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