Clouds 101: Stratocumulus Castellanus (Sc cas)

Genera: Stratocumulus – Grey or whitish, or both grey and whitish patch, sheet or layer of cloud which almost always has dark parts, composed of tessellations, rounded masses, rolls etc., which are non-fibrous (except for virga) and which may or may not be merged; most of the regularly arranged small elements have an apparent width of more than five degrees. Stratocumulus is composed od water droplets, sometimes accompanied by raindrops or snow pellets and, more rarely, by snow crystals and snowflakes. Stratocumulus most often appears as a sheet or a layer composed of cloudlets similar to those of Altocumulus but at a lower lever and therefore apparently larger. The size, thickness and shape of the clouds vary over a wide range.

Rod: Stratocumulus – siv ili bjelkast (ili kombinacija obje boje) sloj, plahta ili krpa oblaka koji gotovo uvijek ima tamnije dijelove sastavljene od rolni, okruglih masa i sl. koje nisu vlaknaste (osim kod virgi/kisnih zavjesa) i koji mogu a i ne moraju biti spojeni. Vecina ravnomjerno rasporedjenih manjih elemenata imaju ociglednu sirinu vecu od pet stepeni. Stratocumulus se sastoji od kapljica vode, ponekada pracenih sa kisom ili sugradicom i rijedje, snijeznim kristalima te snjeznim pahuljama. Stratocumulus se najcesce pojavljuje kao plahta tj. sloj sastavljen od manjih oblacica slicnih Altocumulusu ali na nizim nivoima te zbog toga djeluju vecima. Velicina, debljina i oblik uveliko mogu da variraju.

Species: Castellanus – Clouds which present, in at least some portion of their upper part, cumuliform protuberances in the form of turrets which generally give the clouds a crenellated appearance. The turrets, some of which are taller than they are wide, are connected by a common base and seem to be arranged in lines. The castellanus character is especially evident when the clouds are seen from the side. 

Vrsta: Castellanus – oblaci koji predstavljaju, barem u komadu gronjeg dijela, kumuliformne izbocine u obliku kupola koje daju oblaku izgled tvrdjave. Kupole, od kojih su neke vise nego sto su siroke, su povezane zajednickom bazom i djeluju rasporedjene u linijama. Castellanus izgled je posebno uocljiv kada se gleda bocno.

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Definition of a cloud: 

A cloud is a visible aggregate of minute particles of water or ice, or of both, in the free air. This aggregate may include larger particles of water or ice and particles, such as those present in fumes, smoke or dust.

Definicija oblaka: Oblak je vidljivo agregatno stanje zasicenih cestica vode, leda ili vode i leda, koje se nalaze slobodne u zraku. Mogu biti u pitanju i krupnije cestice vode i leda i cestice poput onih koje su prisutne u dimu, isparenjima ili prasini. 

Appearance of clouds:

The appearance of a cloud is determined by the nature, sizes, number and distribution in space of its constituent particles. Appearance is best described in terms of dimensions, shape, structure, texture, luminance and colour of the cloud.

Pojava oblaka tj. njihov izgled je odredjen karakterom, velicinama, kolicinom i raspodjelom cestica koje ga sacinjavaju kroz prostor. Izgled oblaka je najbolje opisan u kroz dimenzije, oblik, strukturu, teksturu, osvjetljenost i boju oblaka. 

Classification of clouds:

A classification of the charcteristic forms of clouds, in terms of “genera”, “species” and “varieties” has been established by the WMO(World Meteorological Organisation).

Klasifikacija karakteristicnih oblika oblaka u smislu “rodova”, “vrsta” i “podvrsta” je ostvarena od strane WMO (World Meteorological Organisation) tj. Svjetske Meteoroloske Organizacije.

(I) Genera 

The classification is essentially based on 10 main groups, called genera, which are mutually exclusive, that is to say, a given cloud can belong to one genus only. The genera are;

Podjela na rodove je ustvari podjela na 10 osnovnih grupa zvanih rodovi koji su medjusobno posebni, sto znaci da odredjeni oblak moze da pripada samo jednom rodu. Podjela na rodove je slijedeca: 

Cirrus – Ci 

Cirrocumulus – Cc 

Cirrostratus – Cs 

Altocumulus -Ac 

Altostratus -As 

Nimbostratus -Ns 

Stratocumulus – Sc 

Stratus – St 

Cumulus – Cu 

Cumulonimbus – Cb 

(II) Species

Obseved peculiarities in the shape of clouds and differences in their internal structure have led to the subdivision of most of the cloud genera into species.

Osmotrene pojedinosti u obliku oblaka i njihovih razlika u unutarnjoj strukturi su doveli do podjele vecine rodova oblaka na vrste.

(III) Varieties

Clouds may exhibit special characteristics which determine their variety. These characteristics are related to the different arrangements of the could elements.

Oblaci mogu iskazati posebne karakteristike koje ce da odrede njihove podvrste. Te karakteristike su u vezi sa razlicitim rasporedom elementa oblaka.

(IV) Supplementary cloud features 

Dopunske odlike i oblaci pratioci:

1. incus – inc

2. mamma – mam

3. virga – vir

4. praecipitatio – pra

5. arcus – arc

6. tuba – tub

7. pileus – pil

8. velum – vel

9. pannus – pan

2 Comments

    • Oktobar 11, 2012 / 12:29 am

      Thank you! 🙂
      Makes me happy to know that you like my weather related articles.
      I appreciate your interest and your sweet comment! <3

      Selma xx

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