Abstract:
Tropical countries are dependent on supply of meteoric water from wind masses. Geographical features
contribute to evaporation, wind motion and precipitation in addition to infiltration and run off. Srilankan
hydrological patterns are described and the identified extreme conditions are studied. Climatic conditions are
studied. Precipitation pattern at Galle, Kurunegala and Puttalam locations are studied for last 60years. Global
warming of 1deg C is recorded in the same period. Human actions are responsible for the release of green house
gases in to the lower troposphere. With the help of recorded values of temperature, precipitation, pressure and
wind directions other influence from the Moon, Sun, Jupiter and Saturn are observed with smaller effects from
Venus, Mars, Mercury, Uranus and Neptune.
Precipitation is a process influenced by Earth’s gravitational pull as well as by other heavenly bodies.
Monsoons are formed by declination of Sun. Inter-monsoons are formed due to the motion of the Sun over the
island. The Moon as a sub planet has a gravity control like the Sun. The declination of Moon and its rotation
round the Earth has a great control over precipitation and tides. The Sun has little control over tides. The
declination of heavy planets and their positions contribute little effects to precipitation. The Moon has a
combined effect with Earth and is responsible for long term droughts. The author forecasted drought in year
2001 in 1993 due to the common plane episode of Earth and Moon. It came in Sri Lanka and Brazil and other
tropical countries as predicted. As planets revolve in a definite time scale effects are cyclic and can be
accurately predicted. The next drought has come in 2010.
Scientists who have no clue about this effect take that as El Nino.
