Climate Variability and Change—Hydrological Impacts (Proceedings of the Fifth FRIEND World
Conference held at Havana, Cuba, November 2006), IAHS Publ. 308, 2006, 287–293.
Deriving the highest persisting monthly 24-hour dew
points in Malaysia for the estimation of PMP
M. N. Mohd Desa & P. R. Rakhecha
HTC Kuala Lumpur, No 2 Jalan Ledang off Jalan Duta, 50480 Kuala Lumpur, Malaysia
drmohdnor@water.gov.my
Abstract The daily dew point records
of 24 meteorological stations in Malaysia, for the 10 years 1994–2003, have
been used to provide generalized maps of the highest persisting 24-hour 1000 mb
dew points for each month of the year, ranging between 24 and 26ºC. These dew
point maps can be used for obtaining the climatologically highest amount of
atmospheric moisture that might be expected to occur over any location in
Malaysia from tables such as those given in WMO (1986) needed for storm
maximization and consequently for estimation of the probable maximum
precipitation, PMP.
Key words
dew point; probable maximum precipitation; moisture maximization factor,
precipitable water