Did a quick check using the Wyoming balloon trajectory prediction website. Results aren't great. If you launch from say Jurong Island, it'll land about 93km away in the Straits of Malacca on the Indonesian side. Launching from say Pulau Ubin is even worst, it'll over fly both Singapore and Malaysia and still in the Straits albiet closer to Malaysia. These courses are predicted based on current prevailing winds of course.
Check out that website and ask to load using Google Earth KML, it'll show you the prediction.
http://weather.uwyo.edu/polar/balloon_traj.html
http://www.fcc.gov/mb/audio/bickel/DDDMMSS-decimal.html <- Convert the lat and long to decimal degrees if you need it.
So it would appear that April and October are probably the best months for launching. Think I'll check the prediction again next month to see.
Check out that website and ask to load using Google Earth KML, it'll show you the prediction.
http://weather.uwyo.edu/polar/balloon_traj.html
http://www.fcc.gov/mb/audio/bickel/DDDMMSS-decimal.html <- Convert the lat and long to decimal degrees if you need it.
NEA said:In Singapore, there are no distinct wet or dry seasons as rain falls every month of the year. When seasons are mentioned they refer to the prevailing wind dominant at that time of the year. The two main seasons are the North-east monsoon season which lasts from late November to March, and the South-west monsoon season from late May to September. April to early May and October to early November are generally transitional or changeover months separating monsoons. The North-east monsoon season which is more well defined is the wetter season and brings about 48 per cent of the total annual rainfall, while only 36 per cent of the annual rainfall occurs during the South-west monsoon season. The mean annual rainfall is 2360 mm. December is generally the wettest month of the year with an average monthly rainfall of 280 mm, while July is the month with lowest average monthly rainfall of 160 mm.
During the Northeast monsoon season winds blow most frequently from north to north-east while the South-west monsoon the prevailing winds are from south to south-east. The Northeast monsoon winds are generally cooler and more constant in direction and bring spells of wet weather which may persist for several days at a time. The wet spells are more frequent during the first three months of the North-east monsoon season. Dry spells occur during the later part of each monsoon season.
The chief features of the South-west monsoon season is the incidence of morning squalls known as "Sumatras" which develop within the south to north-west sector (the general direction of Sumatra). These squalls consists of gusty winds occasionally strong, often accompanied by heavy rain and thunder with drops in temperature, but the more intense features of the storm seldom last for more than one hour. "Sumatras" occur on the average three to four time a month throughout the season. The highest recorded wind speed during a Sumatra is 114 kilometres per hour. During the changeover months of April and October, winds are light and variable in direction. Afternoon or evening thunderstorms and conventional showers are more frequent.
So it would appear that April and October are probably the best months for launching. Think I'll check the prediction again next month to see.
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