Snow%20and%20Ice

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Snow and Ice

Welcome!!
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Contact Info

• Instructor Stephen Déry
• Office 8-414
• Office hours T 10-11 a.m., R 2-3 p.m.
• Phone [phone]
• Email sdery_at_unbc.ca
• Course website http//cirrus.unbc.ca/ensc/454/

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Definition

• The cryosphere is the portion of the earth where
  natural materials (water, soil, etc.) occur in
  frozen form.
• The cryosphere is one of the 5 major components
  of the climate system (along with the atmosphere,
  lithosphere, hydrosphere, and biosphere).

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Components of the climate system
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The hydrological cycle
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Energy and Water Cycles
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Annual cycle of daily snow accumulation (SWE) at
Barkerville
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Annual cycle of daily runoff for the Swift River
near Barkerville
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• Warnings
• Prince George3.50 AM PST Sunday 4 January
  2009Blizzard warning forPrince George continued
  Strong southerly winds will develop near noon
  and combine with heavy snow to produce localized
  blizzard conditions over the above mentioned
  regions.This is a warning that blizzard
  conditions with near-zero visibilities are
  expected or occurring in these regions. Monitor
  weather conditions..Listen for updated
  statements.A strong moisture laden pacific
  frontal system will spread heavy snow into the
  British Columbia interior today. Snow will
  develop in the central and northern interior this
  morning. The snow will gradually make its way
  into the southern interior and western kootenays
  this afternoon. Amounts of 10 to 20 cm are
  forecast by Monday morning. Along with the snow,
  strong southerly winds gusting to 90 km/h will
  develop through many central interior regions
  near noon producing localized blizzard
  conditions. The blizzard conditions are expected
  to persist into this evening.Meanwhile in the
  southern interior, strong winds of 60 km/h
  gusting 90 km/h are forecast to develop in the
  Penticton and Kamloops regions this afternoon.
  The strong winds combined with falling snow will
  generate blowing snow through the
  regions.Frigid temperatures near minus 30
  combined with brisk winds up to 20 km/h are
  giving extreme wind chill values near minus 40
  this morning over the northern sections of the
  Peace River region. These extreme wind chill
  values should ease this afternoon as temperatures
  rise.

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• Warnings
• Prince George9.29 AM PST Tuesday 6 January
  2009Snowfall warning forPrince George continued
  Periods of snow will spread across the interior
  ahead of a warm front today and tonight giving
  total snowfall accumulations in the 10 to 30 cm
  range.This is a warning that significant
  snowfall is expected or occurring in these
  regions. Monitor weather conditions..Listen for
  updated statements.Snow developing ahead of a
  warm front will spread across the British
  Columbia interior today and tonight. Most regions
  can expect accumulations in the 20 to 30 cm range
  by Wednesday morning. Snow will gradually change
  to rain tonight over the southwest interior.
  Elsewhere snow is expected to continue into
  Wednesday before changing to rain or easing to
  light flurries later in the day.Northerly winds
  to 30 km/h coupled with temperatures in the minus
  twenties will continue to give cold wind chill of
  minus 40 to minus 45 to the north Peace region
  today. These wind chill values will reach the
  southern Peace region on Wednesday as
  temperatures lower and winds increase.

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February 2009 Field Trip
Sun. Mon. Tue. Wed. Thu. Fri. Sat.
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