GUANGZHOU: Since suffering from heatstroke last month, checking the latest
weather information has become a daily routine for Chen Xin.
Unfortunately for her, there are often discrepancies between the various
forecasts of the National Meteorological Center (NMC) and the Guangdong
meteorological center (GMC), she said recently.
"I always follow the weather forecasts because I want to avoid getting
"But frequently, the indices presented by the two centers are different. So
which one should I believe?" Chen said.
In a bid for the "truth", Chen turned to local newspaper, the Information
However, she said that on June 26, the paper had the NMC's heatstroke index
at the "high risk" Level 4, while the GMC forecast was a much less serious Level
The newspaper quoted He Xiajiang, the chief meteorologist at the GMC, as
saying that the discrepancy might have been caused by the differences in
"Take the heatstroke index, for example. Our forecast is based on a number of
weather factors including the temperature, humidity, air pressure and wind
power. If different calculation methods are used, the result will be different
too," He said.
The number of weather factors taken into account will also affect the
forecast, he said.
A meteorologist from the NMC agreed with He and suggested people refer to
their local forecasts.
"We might all have five levels for an index, but the indication of each level
could be different," he said.
"The heatstroke index is just one of several 'life' indices we offer, but
they are intended only as a reference.
"The NMC has to cover the whole country, so some data and information might
be not as accurate as those provided by local meteorological stations," he said.
(China Daily 07/06/2007 page5)