Hubbard Brook Experimental Forest (USDA Forest Service): Soil Temperature Measurements, 1959 - 1998

Soil temperature data were collected approximately
weekly at the Hubbard Brook Experimental Forest from 1959 -
1998. Colman temperature-moisture sensors were installed at
one location west of weir 4 and replicated (1 and 2) at
depths of 3, 8, 15, 30, 46 and 61 cm. Soil resistance was
recorded using a manually-operated AC resistance meter then
converted to temperature. In 1998 the battery needed to
operate the meter to read the sensors was no longer
available. No soil temperature data were collected from the
last Colman reading in 1998 until the start of a new network
collocated with the Colman plots. Two sets of hydroprobes run
from a SCAN site (Soil Climate and Analysis Network operated
by the NRCS) were placed at the original depths and as close
as possible to the original location. Hubbard Brook SCAN data
are now available at the NRCS SCAN website from 2002 –
present and serve to extend the soil temperature dataset
first initiated in 1959 in to the future. These data were gathered as part of the Hubbard Brook
Ecosystem Study (HBES). The HBES is a collaborative effort at
the Hubbard Brook Experimental Forest, which is operated and
maintained by the USDA Forest Service, Northern Research
Station.

1959年至1998年间，研究人员约每周在哈伯布鲁克实验林（Hubbard Brook Experimental Forest）采集土壤温度数据。科尔曼（Colman）温湿度传感器被布设至4号堰西侧的一处测点，并在3、8、15、30、46及61厘米深度处设置了1号与2号重复监测点位。土壤阻力通过手动交流电阻仪进行记录，随后被转换为土壤温度数值。
1998年，用于驱动该仪器以读取传感器的配套电池不再可获得，因此自1998年最后一次科尔曼传感器读数起，直至与原科尔曼测点同址搭建的全新监测网络启动前，未再采集到土壤温度数据。
两套由美国自然资源保护局（Natural Resources Conservation Service, NRCS）运营的土壤气候与分析网络（Soil Climate and Analysis Network，简称SCAN）站点部署的水文探头，被设置为原监测深度，并尽可能贴近原测点位置。哈伯布鲁克SCAN数据目前可从NRCS SCAN官网获取，时间跨度为2002年至今，该数据集延续了1959年首次启动的土壤温度监测序列至后续时段。
这些数据作为哈伯布鲁克生态系统研究（Hubbard Brook Ecosystem Study, HBES）的一部分被采集。HBES是哈伯布鲁克实验林的合作研究项目，该实验林由美国农业部林务局北方研究站运营维护。