We are conducting a pilot study to evaluate methods for the estimations of aerodynamic roughness parameters (i.e., roughness length (z0), zero plane displacement height (d)) from single-level eddy covariance measurements. Results will guide development for future AmeriFlux and FLUXNET datasets. Thanks to the flux community, most required variables are available through the AmeriFlux database (e.g., wind speed (WS),… More
Call to submit data for aerodynamic roughness parameters
We are conducting a pilot study to evaluate methods for More
Alaska Bulletin: New UAS capabilities for AmeriFlux sites
At one of the NGEE Arctic sites in the Seward More
2016 AmeriFlux Tech-Data Workshop
This year's workshop is at Mountain Research Station, close to More
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At one of the NGEE Arctic sites in the Seward Peninsula, near the town of Council, Alaska, the Dream Team—myself, Oriana Chafe, Margaret Torn (NG Arctic team lead), Stan Wullschleger (NG Arctic PI), Mark Conrad, Bryan Curtis and Sigrid Dengel (AMP) (see photo, left to right)—is flying a DGI model Inspire-1 UAS (unmanned aircraft system, or drone)…. More
This year’s workshop is at Mountain Research Station, close to where the AmeriFlux Annual PI Meeting will take place in Golden CO, directly after this workshop. If you want to suggest a topic for the workshop, contact the organizers Sébastien Biraud (Tech) and Deb Agarwal (Data). Your suggestions are always very welcome! Update 7/19/16: No reg… More
Read how our AmeriFlux community contributed to this synthesis of data from 22 AmeriFlux towers. The authors write about responses of terrestrial ecosystems to extreme climate events (drought and heat), and the impact on the carbon cycle. This paper was just published in PNAS late April 2016 (doi: 10.1073/pnas.1519620113). See LBNL feature story by Dan Krotz,… More
Updated 7/19/16: Registration is open! The 2016 AmeriFlux Annual Principal Investigators Meeting takes place Wednesday evening, September 21, through Friday, September 23, 2016. All members of the AmeriFlux Community are welcome. Let’s celebrate the AmeriFlux Network’s 20th Anniversary! Place: Golden, Colorado—Denver West Marriott Hotel, about 35 miles from the Denver Airport. Lodging deadline: August 30, 2016 Registration: $150… More
Koen Hufkens shared his implementation of a toolbox focused on exploring and visualizing AmeriFlux site data. Please see his announcement and links to his original post and the AmerifluxR software package below. I recently finished a first iteration of AmerifluxR, a R toolbox for Ameriflux data exploration / visualization. A quick writeup can be found on… More
The AmeriFlux Portable Eddy Covariance System (PECS) is used to evaluate data quality at sites in the AmeriFlux network. The PECS is deployed side-by-side for short deployments (10-14 days). The current PECS was designed and built by Dave Billesbach. The Tech Team has two PECS which allows simultaneous deployments. The PECS may be operated in different configurations depending… More
The AmeriFlux Tech Team has completed another successful site visit season. Nine (9) site visits were completed.
Data shared through the AmeriFlux Network, and globally through FLUXNET, offer a unique tool to answering scientific questions across different spatial and temporal scales. This is only possible through the collective effort of individuals making measurements at their own sites, and taking extra effort to share the data. Enabling answers to these kinds of questions is motivation enough… More
Martin Beland (at Laval University, Canada) just sent us the white paper he co-wrote with Geoffrey Parker, David Harding, Chris Hopkinson, Laura Chasmer, and Alexander Antonarakis. Thanks from the community to the authors! See AmeriFlux Reports. “Our aim is to inform the AmeriFlux community on existing and upcoming LiDAR technologies (atmospheric Doppler or Raman LiDAR often deployed at flux… More
Dennis Baldocchi recommends reading: Guan, K. et al., 2015. Improving the monitoring of crop productivity using spaceborne solar-induced fluorescence. Global Change Biology: DOI:10.1111/gcb.13136
From the AmeriFlux-Community listserv. Thanks to Joydeep Bhattacharjee for asking, and David for this answer Joydeep: How do PIs across the network protect their equipment on towers against damage from lighting? David: This question ought to unleash a flood of information and opinions, since lightning protection of sensitive instruments is a black art, similar to… More