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1. Tree Seed Data at the Hubbard Brook Experimental Forest, 1993 - present

   https://doi.org/10.6073/pasta/3d6b29aa80b150e5a9e28a839c05c211  

   Fahey, Timothy; Cleavitt, Natalie (January 2021, Environmental Data Initiative)

   Seeds Abstract Tree seeds sorted and counted from long-term reference area litter traps are presented for 1993 until the present. These data are part of the LTER funded quantification of tree annual productivity. Our focal species for seed counts have been sugar maple, American beech and white ash. This data set allows comparison between seed production in reference sites (BB and TF) and the calcium addition watershed (W1) for these species. 

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2. Data for McGill et.al. 2018. The greenhouse gas cost of agricultural intensification with groundwater irrigation in a Midwest US row cropping system. at the Kellogg Biological Station, Hickory Corners, MI (2013 to 2017)

   https://doi.org/10.6073/pasta/6ab26c6ead42552a1d4f0261e8dac9bc  

   Hamilton, Stephen; McGill, Bonnie (January 2018, Environmental Data Initiative)

   Dataset Abstract Data for Data for McGill et.al. 2018. The greenhouse gas cost of agricultural intensification with groundwater irrigation in a Midwest US row cropping system. original data source http://lter.kbs.msu.edu/datasets/176 

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3. Multiple Element Limitation in Northern Hardwood Experiment (MELNHE): Soil respiration at Hubbard Brook Experimental Forest, Bartlett Experimental Forest and Jeffers Brook, central NH USA, 2008 - present

   https://doi.org/10.6073/pasta/eb37cd72ccaa3e9197c461f0c1c734eb  

   Fahey, Timothy J; Yanai, Ruth D; Li, Shiyi; Mann, Thomas (January 2021, Environmental Data Initiative)

   Abstract Soil respiration in 15 stands across 3 sites within the White Mountain National Forest was measured between 2008 and 2020. Stands included in the dataset are part of the Multiple Element in Northern Hardwood Ecosystems (MELNHE) study, a full-factorial NxP fertilization experiment. Pre- and post-treatment data are included, with treatment beginning in 2011. Soil temperature, soil moisture, and relative air humidity at the time of measurement were also recorded next to or above the soil respiration collar at the time of the soil respiration measurement. Having been cut between 1883 and 1990, stands are representative of different successional stages. 

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4. Dataset of "Impact of Gravity Waves From Tropospheric and Non-tropospheric Sources on the Middle and Upper Atmosphere and Comparison with ICON/MIGHTI Winds"

   https://doi.org/10.5281/zenodo.15476686  

   Yiğit, Erdal; Medvedev, Alexander; Gann, Ayden; Klaassen, Gary; Rowland, Douglas (January 2025, Zenodo)

   The data for the forcing spectrum is: spectrum_forcing.txt The data for the column model is: 1D_lat75_prim_sec_c80.txt The GCM model simulations are are as follows: EXP0, exp15A_jun2020_ut.dat EXP1, exp16A_jun2020_ut.dat EXP2, exp17_jun2020_ut.dat EXP3, exp18_jun2020_ut.dat 

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5. Hubbard Brook Experimental Forest: Ice Storm Experiment (ISE) Canopy Hemispherical Photos

   https://doi.org/10.6073/pasta/aa1ec68480b0d83a0abe4b3552f28f77  

   Campbell, John L; Rustad, Lindsey E; Fahey, Robert T; Driscoll, Charles T (January 2022, Environmental Data Initiative)

   Abstract An ice storm simulation was performed at the Hubbard Brook Experimental Forest to evaluate impacts of these extreme weather events on northern hardwood forests. Water was pumped from the main branch of Hubbard Brook and sprayed above the forest canopy in subfreezing conditions so that it rained down and froze on contact with trees. The experiment consisted of five treatments, including a control (no ice) and three target levels of radial ice accretion: low (6.4 mm), mid (12.7 mm), and high (19.0 mm). Two of the mid-level treatment plots (midx2) were iced in back-to-back years to evaluate impacts of consecutive storms. This dataset consists of hemispherical photographs of the forest canopy with leaves on and off the trees before and after the various ice treatments. 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. 

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