关于风暴探测的一个理解问题

dogshead

The Best Track Committee at the NHC recently completed a review of a re-analysis of storms from 1851 to 1910. Since 1997, forecasters have used Global Positioning System dropwindsondes, a measuring device dropped from hurricane reconnaissance aircraft into the eyewall—the windiest part of the hurricane. The sonde system measures temperature, barometric pressure, water vapor, and wind data every 15 feet on its way down.

This new method gave meteorologists an important glimpse into the true strength of these devastating storms. The analyses of the dropwindsonde data indicated that, on average, the maximum sustained surface-wind speed was about 90 percent of the wind speed measured at the 10,000-foot aircraft level flown as Andrew approached south Florida. In 1992 Andrew's wind speed was estimated at 75 to 80 percent of the aircraft observations. The research findings resulted in an increase in the estimated wind speeds of Hurricane Andrew from 145 mph to 165 mph.

两个疑问

1）最后一句，研究发现造成了对Hurricane Andrew风速估值从145到165mph，这个增加是正确的还是错误的增加了？过去的估值正确还是目前的估值正确呢？

2）前面的90%和后面的75 to 80 percent 有什么关系么？

Read more: Hurricanes - average, low, world, high, days, Hurricane and tropical storm season, Portrait of a hurricane, Hurricane casualties, The nations worst weather disaster http://www.weatherexplained.com/Vol-1/Hurricanes.html#ixzz0aDfJhUMk