The ice accretion indicator is an L-shaped piece of aluminium 38 cm (15 in) long by 4 to 5 cm (1.6 to 2.0 in) wide.[1][2] It is used to indicate the formation of ice, frost or the presence of freezing rain or freezing drizzle.
It is normally attached to a Stevenson screen, about 1 m (3 ft 3 in) above ground,[2] but may be mounted in other areas away from any artificial heat sources. The weather station would have two on site and they would be exchanged after every weather observation. The spare indicator should always be at the outside air temperature to ensure that it is ready for use and would normally be stored inside the screen.[3]
If the observer notes the presence of ice or frost on the indicator then a remark to that effect should be sent in the next weather observation. Examples of these are 'rime icing on indicator' and 'FROIN' (frost on indicator). As the indicator is at air temperature and is kept horizontal it provides an excellent surface on which to observe freezing precipitation.
The iceaccretionindicator is an L-shaped piece of aluminium 38 cm (15 in) long by 4 to 5 cm (1.6 to 2.0 in) wide. It is used to indicate the formation...
snowflakes, hail, frost, icicles, and ice spikes. iceberg iceaccretionindicatorice crystal 1. A minute spicule of ice that forms from water in the atmosphere...
humidity IceAccretionIndicator – an L-shaped piece of aluminum 15 inches (38 cm) long by 2 inches (5 cm) wide used to indicate the formation of ice, frost...
by changes in the Sun. Earth formed around 4.54 billion years ago by accretion from the solar nebula. Volcanic outgassing probably created the primordial...
In aeronautics, ice protection systems keep atmospheric moisture from accumulating on aircraft surfaces, such as wings, propellers, rotor blades, engine...
issued 1936-05-08 GB patent 446983, Andrew Swan; William Helmore, "Iceaccretionindicator for aircraft and internal combustion engines", issued 1936-05-11 ...
Eurasian and North American Plates, and Iceland was created by rifting and accretion through volcanism along the ridge. Many fjords punctuate Iceland's 4,970-km-long...
leading to a loss of control when the airplane accumulated a thin, rough accretion of ice on its lifting surfaces. A contributing factor was the crew's decision...
Paleopangea. Accretion occurs over geoidal lows that can be caused by avalanche slabs or the downgoing limbs of convection cells. Evidence of the accretion and...
Canada was formed as a federal dominion of four provinces. This began an accretion of provinces and territories and a process of increasing autonomy from...
Phillips, D. H.; Huxham, M. (2010). "High mangrove density enhances surface accretion, surface elevation change, and tree survival in coastal areas susceptible...
rock layers (stratigraphy). Earth formed about 4.54 billion years ago by accretion from the solar nebula, a disk-shaped mass of dust and gas left over from...
Rogers, S. O. (13 June 2008). "Isolation of Microbes from Lake Vostok AccretionIce". Applied and Environmental Microbiology. 74 (15): 4962–4965. Bibcode:2008ApEnM...
Mercury, Venus, Earth (and the Moon) and Mars. These came from both post-accretion and planetary instability-driven populations of impactors. Although it...
of Neanderthals following the Neanderthal/human split: two-phase and accretion. Two-phase argues that a single major environmental event—such as the...
around 20 to 30 micrometres, and the second stage takes over. In the accretion phase, the raindrop begins to fall, and other droplets collide and combine...
Churyumov-Gerasimenko and Arrokoth, and laboratory experiments on accretion, suggest refractories-to-ices ratios less than 1 may not be possible. The composition...
formation, Mars was created as the result of a random process of run-away accretion of material from the protoplanetary disk that orbited the Sun. Mars has...
Retrieved 26 April 2023. Lu, Ru-Sen; et al. (26 April 2023). "A ring-like accretion structure in M87 connecting its black hole and jet". Nature. 616 (7958):...
a controlling area for the engine. If this area is reduced due to an accretion of ash, a smaller mass flow rate of gas passes through the engine core...
of Jupiter's formation involved runaway growth of its mass through the accretion of large amounts of hydrogen and helium from the protoplanetary disk;...
causes are an accumulation of material from a binary companion through accretion, or by a stellar merger. In the case of a massive star's sudden implosion...
are approximate and should be taken as an order of magnitude indicator only. Accretion – Accumulation of particles into a massive object by gravitationally...
radio-wavelength images of astrophysical jets in galaxies that are powered by accretion onto a black hole. The task is to correctly associate any radio components...
isotopic composition of extraterrestrial materials stem from planetary accretion or other planetary processes such as atmospheric escape, and are larger...
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