US-NC5: NC Butner Farm

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Tower_team:
PI:	Ge Sun ge.sun@usda.gov - USDA Forest Service
PI:	John King john_king@ncsu.edu - North Carolina State University
PI:	Johnny Boggs johnny.boggs@usda.gov - USDA Forest Service
PI:	Maricar Aguilos mmaguilo@ncsu.edu - North Carolina State University
Technician:	Miko Belgado mjbelgad@ncsu.edu - North Carolina State University
Lat, Long:	36.1565, -78.7878
Elevation(m):	122
Network Affiliations:	AmeriFlux
Vegetation IGBP:	ENF (Evergreen Needleleaf Forests: Lands dominated by woody vegetation with a percent cover >60% and height exceeding 2 meters. Almost all trees remain green all year. Canopy is never without green foliage.)
Climate Koeppen:	Cfa (Humid Subtropical: mild with no dry season, hot summer)
Mean Annual Temp (°C):	15.5
Mean Annual Precip. (mm):	1330
Flux Species Measured:	CH4, H2O, CO2
Years Data Collected:	2025 - Present
Years Data Available:	No data available
Data Use Policy:	AmeriFlux CC-BY-4.0 Policy¹
Description:	The US-NC5 flux tower is located within an 80-year-old mixed pine-hardwood forest at the Umstead Research Farm in Butner, North Carolina. The northern ... The US-NC5 flux tower is located within an 80-year-old mixed pine-hardwood forest at the Umstead Research Farm in Butner, North Carolina. The northern section of this 20-hectare Fall Lake Watershed of the Neuse River Basin in the Piedmont of North Carolina, USA. The Northern portion is currently a managed cattle farm, which is slated for expansion—necessitating forest clearing in the flux site. To establish a reference baseline, a year-long, all-season eddy covariance flux monitoring campaign will be conducted from April 2025 to March 2026. This effort aims to capture the carbon flux dynamics of the mature forest ecosystem prior to a planned land-use conversion. The site will be transitioned into a silvopasture, maintained through prescribed burning and cattle grazing to promote an open-canopy watershed structure. Flux measurements will continue after the conversion. See More Show Less
URL:	—
Research Topics:	Assess the pre-and-post-conversion changes in carbon and water fluxes to evaluate how land-use change will impact the carbon budget and the hydrology of ... Assess the pre-and-post-conversion changes in carbon and water fluxes to evaluate how land-use change will impact the carbon budget and the hydrology of the ecosystem after converting old-growth mixed-pine forest into a silvopasture for cattle grazing. See More Show Less
Acknowledgment:	—

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NC Butner Flux Tower Bird’s Eye View
Keywords: —
**Credit:** Miko Lorenzo Belgado
**Site ID:** US-NC5
**Location:** North Carolina, United States
**Image Date:** 2025/04/28
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**Article Title:** —
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33-meter High NC Butner Flux Tower
Keywords: —
**Credit:** Miko Lorenzo Belgado
**Site ID:** US-NC5
**Location:** North Carolina, United States
**Image Date:** 2025/04/08
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**Article Title:** —
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**Right to Use:** As long as credit is given

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Hashimoto, H., Wang, W., Park, T., Khajehei, S., Ichii, K., Michaelis, A.R., Guzman, A., Nemani, R.R., Torn, M., Yi, K., Brosnan, I.G. (in preparation). Subsets of geostationary satellite data over international observing network sites for studying the diurnal dynamics of energy, carbon, and water cycles.

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GeoNEX Surface Reflectance for Vegetation Indices (NDVI & NIRv)

Wang, W., Wang, Y., Lyapustin, A., Hashimoto, H., Park, T., Michaelis, A., & Nemani, R. (2022). A novel atmospheric correction algorithm to exploit the diurnal variability in hypertemporal geostationary observations. Remote Sensing, 14(4), 964.

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Li, R., Wang, D., Wang, W., & Nemani, R. (2023). A GeoNEX-based high-spatiotemporal-resolution product of land surface downward shortwave radiation and photosynthetically active radiation. Earth System Science Data, 15(3), 1419-1436.

GeoNEX Land Surface Temperature (LST):

Jia, A., Liang, S., & Wang, D. (2022). Generating a 2-km, all-sky, hourly land surface temperature product from Advanced Baseline Imager data. Remote Sensing of Environment, 278, 113105.

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US-NC5: NC Butner Farm

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US-NC5: NC Butner Farm

US-NC5: NC Butner Farm

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US-NC5: NC Butner Farm

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US-NC5: NC Butner Farm

NC Butner Flux Tower Bird’s Eye View

33-meter High NC Butner Flux Tower

US-NC5: NC Butner Farm

US-NC5: NC Butner Farm

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US-NC5: NC Butner Farm

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