Active layer thickness and ground temperatures, Svea, Svalbard, Version 1

Snow and soil temperature records for January 1988 - May 1996 are presented. Included are snow depth and weight measurements, snow density (calculated), active layer depth in the frost tubes, weight of wet and dried soil samples from unknown depth within the active layer (water content calculated), and soil temperature at the surface (0.05 cm) and to the depths of 3 to 4 meters at 3 sites. The sites are 1) on a road covered by 1 m of gravel underlain by clay; 2) outside a building on piles, (sensors are placed 1 to 2 m from the building wall); and 3) under the building between piles. In addition, air temperature was measured inside the building or between the piles (documentation is not clear on this point.) There are several gaps in temperature measurements (January 1991 to May 1992). These data are presented on the CAPS CD-ROM version 1.0, June 1998.

Air temperature, wind direction, and temperature were measured at 5, 20, 50, 100, 150, and 200 cm below the tundra surface at an undisturbed site; and at 5, 20, 50, 100, 150, 200 cm, and 3 m and 8 m below the concrete surface of a building. Incoming radiation, outgoing radiation, temperature of the heat flux instrument, global radiation, heat flux, wind speed, wind speed maximum, average wind speed, and temperature inside the building were measured since 1993 with data loggers. All data are recorded for July 1987 - February 1996.

本数据集收录了1988年1月至1996年5月期间的雪与土壤温度记录。其中包含积雪深度及重量测量数据、积雪密度（计算得出）、冻土管中活动层深度、来自活动层未知深度的湿润和干燥土壤样本重量（计算含水量），以及地表（0.05厘米）及3至4米深处的土壤温度。研究地点包括：1）位于由1米厚砾石层覆盖的黏土路面之上；2）建筑物外侧的桩基附近（传感器放置于建筑物墙体1至2米处）；3）建筑物桩基之间。此外，室内或桩基之间的气温也被测量（关于此点的记录不够明确）。温度测量数据存在数处缺失（1991年1月至1992年5月）。这些数据以CAPS CD-ROM版本1.0的形式呈现，发布于1998年6月。

在未受干扰的地点，对苔原表面以下5、20、50、100、150和200厘米处的气温、风向和温度进行了测量；在建筑物混凝土表面以下5、20、50、100、150、200厘米、3米和8米深处也进行了测量。自1993年起，使用数据记录器测量了入射辐射、出射辐射、热通量仪器温度、总辐射、热通量、风速、风速最大值、平均风速和室内温度。所有数据均记录于1987年7月至1996年2月。