Chapter VIII RELATIONS BETWEEN PRECIPITATION AND RUNOFF

ANGELES, Alyssa Rose S.

Physics of Snowmelt

Snow surface0°C

shortwave longwave

wind

humidity

temperature sensible heat flux

Ground surface

latent heat flux

conduction

precipitation

50% or less

Snow surface

longwave

84 mm

air temperature

snow temperature

atmospheric vapor pressure

cloud

20 mm

Snow surface

conduction

convection

condensation

evaporation

Snow surface

convection

air temprature

snow temperature

vapor pressure wind velocity

𝑀 h=𝑘h (𝑇𝑎−𝑇 𝑜 )𝑣𝑀𝑒=𝑘𝑒 (𝑒𝑎−𝑒𝑜 )𝑣

Snow surface

Ground surface

conduction

100 mm

Snow surface

0°C

𝑀 𝑟=4.19𝑃𝑇𝑤

334 = rainfall in mm = wet-bulb temperature in °C

= latent heat of fusion in J/g

= specific heat of water in J/g/°C

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