224 
PACIFIC SCIENCE, Vol. Ill, July, 1949 
factors influencing rainfall, a series of well- 
analyzed upper air charts together with time- 
height sections of wind and radiosonde data 
must be collected. Past maps available at the 
Honolulu Weather Bureau office only partially 
fit this need. After teletype sequence data are 
destroyed, plotting of the necessary time-height 
sections is made difficult. 
Correlation of rainfall values with the upper 
air data and inter-station correlation require 
better organization of the basic rainfall data. 
In January, 1948, a scheme for routine collection 
of all rainfall quantities in a centralized location 
was initiated by the Pineapple Research Institute 
and the Hawaiian Sugar Planters’ Association 
Experiment Station. 
The attainment of longer range forecasting 
techniques is apparently in sight as a result of 
Solot’s work and that of the Extended Range 
Forecast Section of the U. S. Weather Bureau. 
For the best use of such forecasts the same prob- 
lems of inter-station correlation are met, this 
time with monthly rainfall values. Month-ahead 
rainfall forecasts made by the Weather Bureau 
for Hawaii are now being tested by selected 
sugar and pineapple plantations. 
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