Researcher places spotlight on management of water resources
CNATAIPEI--A researcher warned yesterday that island states like Taiwan could face serious challenges in terms of water resources due to changes in rainfall patterns globally, as indicated in a recent study.
March 14, 2013, 12:00 am TWN
Taiwan, therefore, should try to make more efficient use of its water resources, said Chou Chia, a research fellow at Academia Sinica's Research Center for Environment Changes.
Chou said that in the study, his research team found evidence of an increasing difference in wet and dry season precipitation worldwide over the past three decades, based on analysis of global rainfall data from 1979 to 2010.
The study found that wet seasons are becoming wetter, and dry seasons drier, Chou said.
This trend suggests that the volume of rainfall in Southern Taiwan will increase in summer periods and decrease in winter, he warned.
If that happens, the country's reservoirs will no longer be able to help resolve the problem of water shortage, Chou said, adding that currently the reservoirs in southern Taiwan cannot meet demand the for a whole year.
The government should start setting priorities for water usage and adopting more sophisticated methods of water resource distribution and control, since it is unlikely that more reservoirs can be built on the island, Chou said.
According to a synopsis of the study, the water vapor content of the atmosphere has increased as result of rising global temperatures over the past few decades.
“This, in turn, has led to wet regions getting wetter, and dry regions drier,” it said. “Climate model simulations suggest that a similar intensification of existing patterns may also apply to the seasonal cycle of rainfall.”