Talk:Cloud/GA2

GA Review

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Reviewer: Iazyges (talk · contribs) 17:20, 9 March 2018 (UTC)

Will start soon. Iazyges Consermonor Opus meum 17:20, 9 March 2018 (UTC)

Criteria

GA Criteria
GA Criteria: 1 1.a Y 1.b Y 2 2.a Y 2.b Y 2.c Y 2.d Y (Highest is 76.5%, but the site appears to have been copied from the article, not the other way around.) 3 3.a Y 3.b Y 4 4.a Y 5 5.a Y 6 6.a Y 6.b Y

• No DAB links Y
• No dead links N:
  1. World Meteorological Organization, ed. (2017). "Stratocumulus, International Cloud Atlas". Retrieved 16 May 2017.
• No missing citations N:
  1. Two of the forms are each divided into several genera that are differentiated mainly by altitude range or level. The other three comprise just one genus type for each form.
  2. If the inversion layer is absent or higher in the troposphere, increased convective activity may cause the cloud layers to develop tops in the form of turrets consisting of embedded cumuliform buildups. The stratocumuliform group is divided into cirrocumulus (high-level), altocumulus (mid-level), and stratocumulus (low-level).
  3. Depending on their vertical size, clouds of the cumulus genus type may be low-level or multi-level with moderate to towering vertical extent.
  4. and often have complex structures that include cirriform tops and multiple accessory clouds.
  5. Cirrocumulus occasionally forms alongside cirrus and may be accompanied or replaced by cirrostratus clouds at the very leading edge of an active weather system.
  6. Altocumulus near the top of its range may resemble cirrocumulus but is usually thicker and composed of water droplets so that the bases show at least some light-grey shading. Opaque altocumulus associated with a weak frontal or low-pressure disturbance can produce virga, very light intermittent precipitation that evaporates before reaching the ground. If the altocumulus is mixed with moisture-laden altostratus, the precipitation may reach the ground.
  7. Precipitation commonly becomes heavier and more widespread if it thickens into nimbostratus.
  8. Opaque stratocumulus can produce very light intermittent precipitation. This cloud often forms under a precipitating deck of altostratus or high-based nimbostratus associated with a well-developed warm front, slow-moving cold front, or low-pressure area. This can create the illusion of continuous precipitation of more than very light intensity falling from stratocumulus.
  9. Only very weak precipitation can fall from this cloud (usually drizzle or snow grains), although heavier rain or snow may fall through a stratus layer from a higher precipitating cloud deck. When a low stratiform cloud contacts the ground, it is called fog if the prevailing surface visibility is less than 1 kilometer, although radiation and advection types of fog tend to form in clear air rather than from stratus layers. If the visibility increases to 1 kilometer or higher in any kind of fog, the visible condensation is termed mist.
  10. They usually form in the low level of the troposphere except during conditions of very low relative humidity when the clouds bases can rise into the middle altitude range. Moderate cumulus is officially classified as low-level and more informally characterized as having vertical extent that can involve more than one altitude level.
  11. When they form at low altitudes, stratiform and cumuliform genus-types can be torn up into shreds by brisk low level winds that create mechanical turbulence against the ground. Fractus clouds can form in precipitation at low altitudes, with or without brisk or gusty winds. They are closely associated with precipitating cloud systems of considerable vertical and sometimes horizontal extent, so they are also classified as accessory clouds under the name pannus (see section on supplementary features).
  12. Castellanus resembles the turrets of a castle when viewed from the side, and can be found with stratocumuliform genera at any tropospheric altitude level and with limited-convective patches of high-level cirrus. Tufted clouds of the more detached floccus species are subdivisions of genus-types which may be cirriform or stratocumuliform in overall structure. They are sometimes seen with cirrus, and with tufted cirrocumulus, altocumulus, and stratocumulus. Low and mid level castellanus or floccus can resemble cumulo- and cumulonimbogenitus formations (see 'Mother clouds' section). However, the latter genitus types are seen mostly in the evening and are the result of cumuliform and cumulonimbiform clouds dissipating rather than forming or building.
  13. which is the same type that the International Civil Aviation Organization refers to as 'towering cumulus'.
  14. Similarly, these varieties are also not associated with moderate and towering vertical clouds because they are always opaque.
  15. and with the genus altostratus.
  16. The heavier precipitating clouds, nimbostratus, towering cumulus (cumulus congestus), and cumulonimbus typically see the formation in precipitation of the pannus feature, low ragged clouds of the genera and species cumulus fractus or stratus fractus.
  17. When wind driven clouds are forced through a mountain range, or when ocean wind driven clouds encounter a high elevation island, they can begin to circle the mountain or high land mass. They can form at any altitude in the troposphere and are not restricted to any particular cloud type.
  18. Cloudiness tends to be least prevalent near the poles and in the subtropics close to the 20th parallels, north and south. The latter are sometimes referred to as the horse latitudes. The presence of a large-scale high-pressure subtropical ridge on each side of the equator reduces cloudiness at these low latitudes. Similar patterns also occur at higher latitudes in both hemispheres.
  19. This uncertainty arises because of the delicate balance of processes related to clouds, spanning scales from millimeters to planetary. Hence, interactions between large-scale weather events (synoptic meteorology) and clouds becomes difficult to represent in global models.
  20. These larger droplets associated with vertically developed clouds are better able to trap the long-wave radiation thus mitigating the cooling effect to some degree. However, these large often precipitating clouds are variable or unpredictable in their overall effect because of variations in their concentration, distribution, and vertical extent.
  21. Moisture is scarce in the stratosphere, so nacreous and non-nacreous cloud at this altitude range is rare and is usually restricted to polar regions in the winter where the air is coldest.
  22. However, an increasing frequency of occurrence of noctilucent clouds since the 19th century may be the result of climate change.
  23. and a fluid cycle on Titan, including lakes near the poles and fluvial channels on the surface of the moon.

• @ChrisCarss Former24.108.99.31: I'm placing the review on hold due to the missing citations. Iazyges Consermonor Opus meum 13:18, 3 April 2018 (UTC)

• • @Iazyges:Thanks for the work you've done so far. I see a lot of additional citations are needed to meet the GA criteria. I'll try my best to get it done within the 7 day deadline. ~~ChrisCarss Former24.108.99.31 (talk) 23:48, 3 April 2018 (UTC)
  • @Iazyges: I'm almost finished adding the new citations. I should squeak in just ahead of the deadline! ~~ChrisCarss Former24.108.99.31 (talk) 23:48, 9 April 2018 (UTC)

    @ChrisCarss Former24.108.99.31: Please note that Each altitude level comprises two or three genus types differentiated mainly by physical form. also needs a ref, must have missed it during my first sweep.

  • @Iazyges: I just noticed this morning your extra comment about needing one more reference citation. It was undated and placed just above my most recent comments ("Mission hopefully accomplished") so it may have taken me awhile to see it. I usually look below rather than above my last comments for any further feedback from users and reviewers. In any case, I have given the sentence in question three references. It may be the sentence is a bit too broad as written. I believe the first reference ("definitions") covers the first half of the sentence about the altitude levels comprising several genus types each. I hope the second and third references adequately cover the second half of the sentence that refers to the forms, which are also discussed and well referenced in the section about physical forms a little higher up the article. If it's all a bit too messy, I can break up the long broad sentence into two shorter sentences each with their own reference citations. If you think any of the refs don't adequately cover the one broad sentence, or two proposed shorter sentences, I can reduce the sentence to just its first half with its explicit citation reference and eliminate the second half of the sentence where the reference citations to the "forms" might be a little bit more vague. I welcome your advice on all of this. Thankyou again! ~~ChrisCarss Former24.108.99.31 (talk) 13:17, 26 April 2018 (UTC)

Mission hopefully accomplished

@Iazyges: I've finished adding the new citations just ahead of the deadline. For most of the missing citations, I was able to find reliable sources and link them as references to the relevent text. In some other cases I had to modify or correct some text to conform more closely with the new citations. In just a very few situations, I had to remove some text that I (in my previous inexperience as an editor) thought was common knowledge. I'm unable to find any suitable references for the deleted items at this time, but may restore them in the future if any good sources come into view. I've tried very hard to keep my work free of significant errors or oversights. I will quickly fix or remove any further flaws that are brought to my attention. I thank you again for your help in this review, and look forward to learning of the outcome.~~ChrisCarss Former24.108.99.31 (talk) 14:03, 10 April 2018 (UTC)

Prose Suggestions

Please note that all of these are suggestions, and can be implemented or ignored at your discretion.

• Around the beginning of the 13th century, it was extended as a metaphor to include rain clouds as masses of evaporated water in the sky because of the similarity in appearance between a mass of rock and a cumulus heap cloud. Over time, the metaphoric term replaced the original old English weolcan to refer to clouds in general. suggest Around the beginning of the 13th century, the word came to be used as a metaphor for rain clouds, because of the similarity in appearance between a mass of rock and cumulus heap cloud. Over time, the metaphoric usage of the word supplanted the old English weolcan, which had been the literal term for clouds in general.
• These high clouds do not produce precipitation. does this apply to the other two genus clouds, or just genus cirrus?
• On comparatively rare occasions, convective lift can be powerful enough to penetrate the tropopause and push the cloud top into the stratosphere. Suggest removing comparatively, perhaps adding "moderately" to replace it.
• @ChrisCarss Former24.108.99.31: That is all my suggestions, passing now. -- Iazyges Consermonor Opus meum 19:34, 14 May 2018 (UTC)

@Iazyges: Thankyou for the suggestions. They may be optional, but I think they all help, so I've incorporated them into the article. I've always had a good knowledge about certain meteorological subjects, but I've been on a steep learning curve when it comes to good writing and editing, especially the refs/citations! This is my first GA; Your help has been invaluable ~~ChrisCarss Former24.108.99.31 (talk) 23:56, 16 May 2018 (UTC)