Initially, the role of snow and ice in the global water balance is
assessed and methods of snow measurements are explained. Remote sensing
is dealt with with regard to periodical snow cover mapping. Last
advances and refinements refer to spatial resolution, cloud interference
and separate monitoring of snow and glacier ice. Following a review of
snow melt and runoff modelling, the Snowmelt Runoff Model (SRM)
demonstrates the merits of remote sensing in snow hydrology by using the
satellite data as a direct input variable. Applications in over 100
mountain basins around the world are documented, with surface areas
ranging from 0.3 km2 to 900.000 km2. Based on runoff modelling, runoff
forecasts are dealt with including seasonal and short term forecasts as
well as computation of hydrographs from forecasted temperatures and
precipitation. The climate change is becoming a major concern of our
times. The effect of various climate scenarios on the seasonal snow
cover and runoff is evaluated by the updated computer program which also
enable the real-time runoff forecasts to be improved. As a final note, a
method is outlined to predict the decline of glaciers in the warming
climate.