I had to clean my glasses! Wait until you see part 3, where the truncation hits you between the eyes. Then there is the mystery of the missing data for the Great Storm of 1987 coming up any minute now in part 2.
I was wondering why the storm of 1987 hasn't been mentioned yet! Poor Michael Fish, how embarrassing!! Though I think he probably dined out on that claim to notoriety for years to come
Wind measurement is a multidimensional problem compared to temperature measurement and we can’t seem to get that right. I guess the historical database is recording anemometer readings at the weather stations. But wind is subject to gusts (sudden variations in speed), shear (altitude effects) turbulence and wake effects (from surrounding objects). Modern Lidar can produce a 3D topological map of the wind at different sites but these won’t be consistent with earlier time series of anemometer readings. I think you’re going to need a lot of cakes for this series!
Quite! Plus, as you'll see in part 3, there is evidence that a wind speed chart was used either to estimate speed directly or truncate anemometer readings to match the Beaufort Scale for shipping purposes. Thus the ICOADS dataset is a hybrid that I'll be chewing over in the hope of finding a solution.
Would you believe it truncated data. Well spotted. Data doesn't lie.... Only what's done with/to it!!
I had to clean my glasses! Wait until you see part 3, where the truncation hits you between the eyes. Then there is the mystery of the missing data for the Great Storm of 1987 coming up any minute now in part 2.
I was wondering why the storm of 1987 hasn't been mentioned yet! Poor Michael Fish, how embarrassing!! Though I think he probably dined out on that claim to notoriety for years to come
Wind measurement is a multidimensional problem compared to temperature measurement and we can’t seem to get that right. I guess the historical database is recording anemometer readings at the weather stations. But wind is subject to gusts (sudden variations in speed), shear (altitude effects) turbulence and wake effects (from surrounding objects). Modern Lidar can produce a 3D topological map of the wind at different sites but these won’t be consistent with earlier time series of anemometer readings. I think you’re going to need a lot of cakes for this series!
Quite! Plus, as you'll see in part 3, there is evidence that a wind speed chart was used either to estimate speed directly or truncate anemometer readings to match the Beaufort Scale for shipping purposes. Thus the ICOADS dataset is a hybrid that I'll be chewing over in the hope of finding a solution.