Climate Change Across Seasons Experiment (CCASE) at the Hubbard Brook Experimental Forest: Soil Water Isotopic Composition

Natural abundance stable isotopes of oxygen and hydrogen in soil water
were measured adjacent to the Climate Change Across Seasons Experiment
(CCASE) plots. There are six plots total (each 11 x 14 m). Two are
warmed 5 degrees C throughout the growing season (Plots 3 and 4). Two
others are warmed 5 degrees C in the growing season and have snow
removed during winter to induce soil freezing and then warming cables
turn on to create thaws; each soil freeze/thaw cycle includes 72-hours
of soil freezing followed by 72-hours of thaw (Plots 5 and 6). Four
kilometers (2.5 mi) of heating cable are buried in the soil to warm
these four plots. Two additional plots serve as controls for our
experiment (Plots 1 and 2). This data set includes natural abundance
stable isotopes of oxygen and hydrogen in soil water from 2018.

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.