Environmental Data Coding Specifcation        ISO IEC LogosRight Title Graphic
Home Browse Search Download Submissions FAQs Contact
 

EA:  CLOUD_SKY_COVER_LAYER_TYPE

Status: STD 2005/06/07
Code: 234
Concept definition: The type of <CLOUD> that comprises a sky cover layer.
 
Attribute value type: ENUMERATION
Reference type: IR
Reference: [WMO306, Part A, Symbol C, note (1), page I.1-B-6]
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		 CLOUD_SKY_COVER_LAYER-
_TYPE		 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 [WMO407, Section II.2.3.1, "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>. 4 PR [WMO306, Volume I.1, Part A, Code table 0500:3]  
STD
2005/06/07		 CLOUD_SKY_COVER_LAYER-
_TYPE		 ALTOSTRATUS A grey 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 [WMO407, Section II.2.3.1, "altostratus"]. 5 PR [WMO306, Volume I.1, Part A, Code table 0500:4]  
STD
2005/06/07		 CLOUD_SKY_COVER_LAYER-
_TYPE		 CIRROCUMULUS A thin and white patch, sheet and/or <CLOUD_LAYER> without shading that is composed of very small elements in the form of grains and/or ripples that are merged or separated and more or less regularly arranged; cirrocumulus [WMO407, Section II.2.3.1, "cirrocumulus"]. Most of the elements have an apparent width of less than one arc degree as observed from the <PLANETARY_SURFACE>. 2 PR [WMO306, Volume I.1, Part A, Code table 0500:1]  
STD
2005/06/07		 CLOUD_SKY_COVER_LAYER-
_TYPE		 CIRROSTRATUS A transparent, whitish veil of <CLOUD>s of fibrous or smooth appearance that totally or partially covers the sky and generally produces halo phenomena; cirrostratus [WMO407, Section II.2.3.1, "cirrostratus"]. 3 PR [WMO306, Volume I.1, Part A, Code table 0500:2]  
STD
2005/06/07		 CLOUD_SKY_COVER_LAYER-
_TYPE		 CIRRUS Detached <CLOUD>s in a form of white delicate filaments and/or white or mostly white patches or narrow bands; cirrus [WMO407, Section II.2.3.1, "cirrus"]. 1 PR [WMO306, Volume I.1, Part A, Code table 0500:0]  
STD
2005/06/07		 CLOUD_SKY_COVER_LAYER-
_TYPE		 CUMULONIMBUS A heavy and dense <CLOUD> with considerable vertical extent in the form of a mountain or a set of huge towers; cumulonimbus [WMO407, Section II.2.3.1, "cumulonimbus"]. At least part of its upper portion is usually smooth, fibrous, or striated, and nearly always flattened. This portion often spreads out in the shape of an anvil or vast plume. 10 PR [WMO306, Volume I.1, Part A, Code table 0500:9]  
STD
2005/06/07		 CLOUD_SKY_COVER_LAYER-
_TYPE		 CUMULUS Detached <CLOUD>s that are generally dense with sharp outlines and develop vertically in the form of rising mounds, domes, and/or towers, the bulging upper part of which often resembles a cauliflower; cumulus [WMO407, Section II.2.3.1, "cumulus"]. The sunlit parts of these <CLOUD>s are mostly brilliant white and the bases are relatively dark and nearly horizontal. 9 PR [WMO306, Volume I.1, Part A, Code table 0500:8]  
STD
2005/06/07		 CLOUD_SKY_COVER_LAYER-
_TYPE		 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 [WMO407, Section II.2.3.1, "nimbostratus"]. 6 PR [WMO306, Volume I.1, Part A, Code table 0500:5]  
STD
2005/06/07		 CLOUD_SKY_COVER_LAYER-
_TYPE		 NOT_VISIBLE <CLOUD>s are not visible due to darkness and/or <FOG>, blowing <DUST>, blowing <SAND>, or other obscuring phenomena. 11 IR [WMO306, Volume I.1, Part A, Code table 0500:/]  
STD
2005/06/07		 CLOUD_SKY_COVER_LAYER-
_TYPE		 STRATOCUMULUS A grey or whitish or both grey and whitish patch, sheet, and/or <CLOUD_LAYER> that almost always has dark parts composed of tessellations, rounded masses, or rolls, that are non-fibrous (except for virga) and which may or may not be merged; stratocumulus [WMO407, Section II.2.3.1, "stratocumulus"]. Most of the regularly arranged, small elements have an apparent width of more than 5 arc degrees as observed from the <PLANETARY_SURFACE>. 7 PR [WMO306, Volume I.1, Part A, Code table 0500:6]  
Group membership:

In addition to the status and date information for each entry, a colour coding scheme highlights the database holding to which an entry belongs. The following highlight colours are used:

  • white - the entry is in the standard
  • yellow - the entry has been added to the register
  • pink - the entry has been submitted for inclusion in the register, but it is not approved
  • cyan - a deprecated entry that was originally either in the standard or was added to the register, but has since been deprecated

The following icons are used to identify items that have figures, modifications and/or clarification notes:

  • F n - has Figures and, if more than one figure, n figures
  • M - has Modifications
  • C - has Clarifications

Bottom Bar Graphic
 Send mail to webmaster with questions or comments about this web site.