Marine Stratocumulus Cloud Fields off the Coast of Southern California Observed Using LANDSAT Imagery. Part II: Textural Analysis

Welch, Ronald M.; Sengupta, S. K.; Kuo, Kwo‐Sen

doi:10.1175/1520-0450(1988)027<0363:mscfot>2.0.co;2

Cited by 19 publications

(2 citation statements)

References 35 publications

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“…17,18 The present is a pilot study which merely demonstrates the potential of this method. A larger database is required to improve the range of variability found for each cloud class.…”

Section: Holdoutmentioning

confidence: 90%

Classification Of Cloud Fields Based On Textural Characteristics

Welch¹,

Sengupta

Chen

1988

SPIE Proceedings

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“…17,18 The present is a pilot study which merely demonstrates the potential of this method. A larger database is required to improve the range of variability found for each cloud class.…”

Section: Holdoutmentioning

confidence: 90%

Classification Of Cloud Fields Based On Textural Characteristics

Welch¹,

Sengupta

Chen

1988

SPIE Proceedings

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“…properties from the GLCM, several image statistical variables are derived from this matrix, including "contrast", "homogeneity", "energy", and "entropy" (Haralick, 1979;Welch et al, 1988b;Baum et al, 1997;Bottino and Ceballos, 2014). The "contrast" measures the intensity contrast between a pixel and its neighbors, assessed over the entire image.…”

Section: A Convective Cloud Identification Methodsmentioning

confidence: 99%

Potential impact of aerosols on convective clouds revealed by Himawari-8 observations over different terrain types in eastern China

Chen¹,

Li²,

Kahn³

et al. 2020

Preprint

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Abstract. Convective clouds are common and play a major role in Earth's water cycle and energy balance; they may even develop into storms and cause severe rainfall events. To understand the convective cloud development process, this study investigates the impact of aerosols on convective clouds by considering the influence of both topography and diurnal variation of radiation. By combining texture analysis, clustering and thresholding methods, we identify all convective clouds in two warm seasons (May–September, 2016–2017) in eastern China based on Himawari-8 Level 1 data. Having a large diurnally resolved cloud data together with surface meteorological and environmental measurements, we investigate convective cloud properties and their variation, stratified by elevation and diurnal change. We then analyze the potential impact of aerosol on convective clouds under different meteorological conditions and topographies. In general, convective clouds tend to occur preferentially under polluted conditions in the morning, which reverses in the afternoon. Convective cloud fraction first increase then decrease with aerosol loading, which may contribute to this phenomenon. Topography and diurnal meteorological variations may affect the strength of aerosol microphysical and radiative effects. Updraft is always stronger along the windward slopes of mountains and plateaus, especially in northern China. The prevailing southerly wind near the foothills of mountains and plateaus is likely to contribute to this windward strengthening of updraft and to bring more pollutant into the mountains, thereby strengthening the microphysical effect, invigorating convective clouds. By comparison, over plain, aerosol decreases surface heating and suppresses convection by blocking solar radiation reaching the surface.

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Research in Cloud and Precipitation Physics: Review of U. S. Theoretical and Observational Studies, 1987–1990

Cooper

1991

Reviews of Geophysics

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Marine Stratocumulus Cloud Fields off the Coast of Southern California Observed Using LANDSAT Imagery. Part II: Textural Analysis

Cited by 19 publications

References 35 publications

Classification Of Cloud Fields Based On Textural Characteristics

Classification Of Cloud Fields Based On Textural Characteristics

Potential impact of aerosols on convective clouds revealed by Himawari-8 observations over different terrain types in eastern China

Research in Cloud and Precipitation Physics: Review of U. S. Theoretical and Observational Studies, 1987–1990

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