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EA:  MIDDLE_CLOUD_GENUS

Status: STD 2005/06/07
Code: 788
Concept definition: The genus of a <MIDDLE_CLOUD>.
 
Attribute value type: ENUMERATION
Reference type: PR
Reference: [WMO407, Section II.8.2.2]
Supplemental references:  
Enumerants (presented in a natural order)
Status Attribute label Enumerant label ▾ Concept definition Code Ref type Reference Supplemental references
STD
2005/06/07		 MIDDLE_CLOUD_GENUS ALTOCUMULUS A white or grey or both white and grey patch, sheet, and/or <CLOUD_LAYER>, generally with shading, composed of laminae, rounded masses, or rolls, which are fibrous or diffuse and which may or may not be merged; altocumulus. Most of the regularly arranged, small elements usually have an apparent width between 1 and 5 arc degrees as observed from the <PLANETARY_SURFACE>. 1 PR [WMO407, Section II.2.3.1, "altocumulus"]  
STD
2005/06/07		 MIDDLE_CLOUD_GENUS ALTOSTRATUS A gray and/or bluish cloud sheet and/or <CLOUD_LAYER> of striated, fibrous, or uniform appearance that totally or partially covers the sky and has parts thin enough to reveal the <SUN> at least vaguely, as through ground glass, and does not show halo phenomena; altostratus. 2 PR [WMO407, Section II.2.3.1, "altostratus"]  
STD
2005/06/07		 MIDDLE_CLOUD_GENUS NIMBOSTRATUS A grey <CLOUD_LAYER> that is often dark with an appearance rendered diffuse by more or less continuously falling <RAIN> and/or <SNOW_PRECIPITATION>, which in most cases reaches the <PLANETARY_SURFACE>, and thick enough throughout to blot out the <SUN>; nimbostratus. 3 PR [WMO407, Section II.2.3.1, "nimbostratus"]  
STD
2005/06/07		 MIDDLE_CLOUD_GENUS NONE_PRESENT No <MIDDLE_CLOUD>s present; none present. 4  
Group membership:

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