While the UAE ends up its hot summer season, people look to the seas and sky in hope to see the Suhail star. Marked in less than two weeks from now, this phenomenon marks change of weather from the hottest time of the year to cooler days.
While it will indeed be the last day of what meteorologists call ‘peak summer,’ it won’t be significantly cooler any time soon.
Even today, the Arabs use the saying, if Suhail rises, the night cools down, to show that temperatures will gradually start to drop at night, as an initial sign that the weather is going to change.
When the situation was being discussed with Ibrahim Al Jarwan, the Chairman of the Emirates Astronomical Society, he pointed out that Suhail will be seen at sunrise from August 24, which is the onset of a very important climatic phase.
After the emergence of Suhail, there are several weeks referred to as ‘Sufriya’ where the climate is temperamental and transitory between extreme hot weather and cooler months.
After this the weather will become gradually mild from mid-October known as ‘Wasm’ season and the winter starts 100 days from the rising of ‘Suhail’.
This heralds the withdrawal of the Indian monsoon which declines and ‘shifts southwards’ when the wind of Suhail arrives. This period is characterized by the onset of the ‘Kous’ winds which will bring humidity and result in the development of low clouds.
These clouds especially over east of the Hajar Mountains in the Sultanate of Oman and the UAE may result in light showers informingly called Kou’s clouds.
Suhail is a star whose nickname is ‘The Star of Yemen,’ and it has a rather important role in Arabian folklore. Its appearance is associated with the special ‘Durur’ calendar of the culture, by which the year is divided into various stages of one hundred days each.
Most of the stars which can be sighted in Canis Major and the tri-sectioned Argo navigate/constellation are highly luminous blue-white stars belonging to the hot massive family The cooler reddish diamonds include Pi Puppis and Suhail which defines the sails of the ship constellation Vela. Among these, “Suhail” was used as a prefix for the names of several stars and comprised of stars in the southern latitude The star “Canopus” or “AR Scorpii” was known as “Suhail al-Bahir” meaning “the Brilliant Suhail.” Another star named “Gamma Velorum” was known as “Al Suhail al Muhlif or ‘Suhail of the Oath.’ ‘Suhails’ used on many other stars, the name was shifted to a single star of which is now known as ‘Lambda’. undefined
Thus, the brightness in units of the solar luminosity is doubled with the temperature, and the radius becomes 207 times solar, this is closer in size to the Earth orbit, the term “giant”, even “supergiant” is justified indeed. These parameters also suggest the presence of a star of 9 to 12 solar masses in the state of evolution that might be burning helium to carbon in its central core. Stars this large are known not to have very a long lifespan, Suhail is said to be aged between 15 to 30 million years. Suhail is probably within or slightly above the edge toward the limit in terms of brightness in stars that explode. If it does not blow up as a supernova, its remnants will form some kind of massive white dwarf, perhaps a neon-oxygen core rather than the more ordinary carbon and oxygen one characteristic of the lower mass stars like the Sun.
Suhail is also beyond a limit for which stars have magnetically heated sun like hot outer coronae and is instead having only slow wind that move with 40 to 60 kilometers per second i.e., less than ‘fast solar wind.’ The origin of the wind is not fully comprehend and may be depends on the Magnetic activity and Luminosity of star.
