Climatological data were collected from a ridgetop climate station east of Niwot Ridge (A-1 @ 2195 m) throughout the year. Parameters measured were temperature, relative humidity, solar radiation, and precipitation. The station was initially instrumented with a thermohygrograph (regularly calibrated and checked with maximum and minimum thermometers and psychrometers), standard 8-inch precipitation gauge installed with the rim 1 m above ground, totalizing anemometer (approximately 0.7 m above the general level of tree crowns), and maximum and minimum soil thermometers at approximately 15 and 30 cm depth. A recording precipitation gauge was installed in 1965. The installation in the clearing was positioned so that the gauge rim subtended a...