Precipitation distribution in mountainous areas



The symposium on ‘The Distribution of Precipitation in Mountainous Areas’ was sponsored by the World Meteorological Organization in coopration with the International Association of Hydrological Sciences and the Norwegian Organizing Committee. One hundred and ten scientists in the fields of meteorology and hydrology, representing 28 countries, discussed various aspects of precipitation, its measurement, and the influence of orographic features on precipitation.

During the discussion on types of instruments and techniques for measuring precipitation, the difficulties in obtaining precise measurements were highlighted. Regardless of the instrument used, the major source of error in the catch of precipitation gages is wind. This is true everywhere, but wind effects are more pronounced in mountainous areas because of topographically influenced eddies, higher average wind speeds, and, most significantly, because a larger proportion of the annual amount of precipitation occurs in the form of snow.