US-BFS: Robert J. Bernard Biological Field Station

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Tower_team:
PI:	Sarah Kavassalis skavassalis@g.hmc.edu - Harvey Mudd College
Lat, Long:	34.1131, -117.7118
Elevation(m):	410
Network Affiliations:	AmeriFlux
Vegetation IGBP:	OSH (Open Shrublands: Lands with woody vegetation less than 2 meters tall and with shrub canopy cover between 10-60%. The shrub foliage can be either evergreen or deciduous.)
Climate Koeppen:	Csa (Mediterranean: mild with dry, hot summer)
Mean Annual Temp (°C):	17.22
Mean Annual Precip. (mm):	343
Flux Species Measured:	CO2, H, H2O
Years Data Collected:	2024 - Present
Years Data Available:	AmeriFlux BASE 2025 Data Citation
Data Use Policy:	AmeriFlux Legacy Policy
Description:	The Bernard Field Station (BFS), an 86-acre academic resource of the Claremont University Consortium, is situated within the campus of The Claremont Colleges ... The Bernard Field Station (BFS), an 86-acre academic resource of the Claremont University Consortium, is situated within the campus of The Claremont Colleges in Claremont, CA. Its principal habitats comprise coastal sage scrub, Riversidian alluvial fan scrub, live oak forest, and grassland. The eddy covariance tower is located in the 'neck' of the field station, home to a protected area of Coastal Sage Scrub, dominated by Artemisia californica. BFS is within walking distance of Harvey Mudd College, serving as an invaluable outdoor laboratory resource for the students. With extensive flora and fauna, including over 170 species of birds, 27 species of mammals, and more than 700 species of insects, it embodies a significant ecological haven in the region that is otherwise Southern California suburbs. See More Show Less
URL:	https://www.ficus.space/bfs
Research Topics:	The key analytical objectives of the Bernard Field Station site include the measurements of momentum, sensible heat, water vapour, latent heat, and CO2 ... The key analytical objectives of the Bernard Field Station site include the measurements of momentum, sensible heat, water vapour, latent heat, and CO2 exchange between the coastal sage scrub and the atmosphere. Among the additional research topics includes: 1) investigation of the relationships of energy and mass exchanges between the atmosphere and the Coastal sage scrub as the region warms and precipitation patterns change; 2) speciatied Volatile Organic Compound (VOC) measurements performed directly from plant species that makeup sage scrub community to link reactive carbon fluxes with ecosystem respiration; 3) plant physiology, particularly involving the dominant Artemisia californica within the coastal sage scrub; 4) studying long-term impact of climate change on this unique ecosystem; 5) exploring interactive carbon chemistry to understand its implications for the ecosystem and beyond. See More Show Less
Acknowledgment:	—

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US-BFS: Robert J. Bernard Biological Field Station

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Use the information below for citation of this site. See the Data Policy page for more details.

DOI(s) for citing US-BFS data

Data Use Policy: AmeriFlux Legacy Policy

AmeriFlux BASE: https://doi.org/10.17190/AMF/3004319
Citation: Sarah Kavassalis (2025), AmeriFlux BASE US-BFS Robert J. Bernard Biological Field Station, Ver. 1-5, AmeriFlux AMP, (Dataset). https://doi.org/10.17190/AMF/3004319

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US-BFS: Robert J. Bernard Biological Field Station

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US-BFS: Robert J. Bernard Biological Field Station

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US-BFS up close
**Description:**
US-BFS tripod closer up (sage scrub viewable, a rare cloudy day)
Keywords: sage scrub, Artemisia, tripod
**Site ID:** US-BFS
**Location:** California, United States
**Image Date:** 2025/11/17
**Journal:** —
**Article Title:** —
**Copyright Permissions:** Contact owner
**Right to Use:** Request for permission

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US-BFS Current Location
**Description:**
US-BFS tripod surrounded by southern coastal sage scrub (mostly Artemisia californica)
Keywords: sage scrub, Artemisia, tripod
**Site ID:** US-BFS
**Location:** California, United States
**Image Date:** 2025/11/19
**Journal:** —
**Article Title:** —
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**Right to Use:** Request for permission

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Tripod in the sage scrub
**Description:**
Photo of our flux tripod surrounded by the sage scrub vegetation.
Keywords: Tripod, IRGASON, csat, sage scrub, dry lands, California
**Site ID:** US-BFS
**Location:** California, United States
**Image Date:** 2024/07/16
**Journal:** —
**Article Title:** —
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US-BFS: Robert J. Bernard Biological Field Station

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ORNL DAAC. 2018. Terrestrial Ecology Subsetting & Visualization Services (TESViS) Fixed Sites Subsets. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1567

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This material can be used without obtaining permission from NASA. NASA should be acknowledged as the source of this material.

Subset Data Citation:

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.

Relevant Science Publication Citation:

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.

GeoNEX Surface Downward Solar Radiation (DSR):

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.

US-BFS: Robert J. Bernard Biological Field Station

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US-BFS: Robert J. Bernard Biological Field Station

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US-BFS: Robert J. Bernard Biological Field Station

Overview
Windroses
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Data Use Log
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Remote Sensing Data
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US-BFS: Robert J. Bernard Biological Field Station

US-BFS: Robert J. Bernard Biological Field Station

DOI(s) for citing US-BFS data

Publication(s) for citing site characterization

Acknowledgments

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US-BFS: Robert J. Bernard Biological Field Station

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US-BFS: Robert J. Bernard Biological Field Station

US-BFS up close

US-BFS Current Location

Tripod in the sage scrub

US-BFS: Robert J. Bernard Biological Field Station

US-BFS: Robert J. Bernard Biological Field Station

BADM for This Site

US-BFS: Robert J. Bernard Biological Field Station

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