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Estimating the changing risk related to typhoons
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3. Causes of inhomogenities:
Changes in
Instruments
Sampling frequencies
Measuring units
Environments (e.g. trees, buildings)
Location Representativity of near surface wind speed measurements
4. Representativity of near surface wind speed measurements
5. Representativity of near surface wind speed measurements
34. The CLM shows much smaller drops in core pressure- probably too small in most cases.The most extreme pressure falls described in the “best track” data set took place over the open ocean, where no satellite data was available in 1953 – how was it observed?Later years show overall less extreme pressure 6-hourly drops.Use caution when using earlier “best track” years.