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Reanalysis of Scottish mountain snow
Mike Spencer
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River Dee at Park gauging station
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!hree phases
● Data mining
● Relationship to climate oscillations
● Modelling
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Part "
Data
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Data mining
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Data mining
● "#$%$ record sheets
● #%"&'( data)ase lines
● "*%( to &++$
● "%+ stations
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,seful?
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-ther datasets
● Met -ffice stations
● ,.CP+*
● Satellite
● /onacina snowiness inde0
● Plot si1e e0periments
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/onacina
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M-D2S
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Satellite performance
● 3igh classification of cloud
● !oo much low elevation snow
● !oo few snow free days
● 3igh o)servation of summer snow
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Part &
Relationships
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4orth 5tlantic -scillation
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What is the 45-?
6 h
P a
3 2
h P
a
6anuary &+"+ mean
6anuary &+"& mean
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45- forecasting
Scaife et al7 &+"%7 D-28 "+9"++&:&+"%G;+(*#
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Results
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-verall relationship?
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Part <
Modelling
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Snow modelling
●
!o infill sparse time:space● Cali)rate with SSG/?
● 2nput data
– Met -ffice station
– C3 G5R
– ,.CP+* temperature
● !wo stage
– Point
– Grid
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Point
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Grid
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Results
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5nnual melt as percentage of precipitation
5P
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5P
=ear
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and
45-
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5nnual days of snow cover
5P
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5P
=ear
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and
45-
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Conclusions
.ey findings
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.ey findings
● ,p to %&> water through snow● 4ew #+ year data set
availa)le SSG/@
– Demonstrated use
● Mapped strength and varia)ility of 45-Asnowlink
● Buantified Scottish snow statistics
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5long the way
5)isko7 Sweden &+"&
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5)isko7 Sweden &+"&
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Many thanks
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