2015 Volume 14 Issue 4 Pages 209-218
After the Sapporo branch of the Forest Experiment Station (the present Hokkaido Research Center, Forestry and Forest Products Research Institute) was moved to Hitsujigaoka, Sapporo, the Hitsujigaoka Experimental Forest was developed. At almost the same time, meteorological observations were initiated mainly for nursery management. These observations may not be sufficiently accurate; however, longterm observations at the wide green area are valuable, considering there are not many observation sites with no influence of the urbanization. In this article, we report observation results for 1973–2013. Mean air temperature, vapor pressure, and annual maximum snow depth were 7.5 °C, 9.6 hPa, and 98 cm, respectively. The mean annual precipitation was 952 mm; however, it was likely that the observations were underestimated, mainly in winter. Wind velocity had declined with the growth of the planted trees around the field.
