Across FLUXNET, CO2 fluxes between ecosystems and the atmosphere are measured using various open- and closed-path gas analyzers. A few years ago, Campbell Scientific introduced new open-path CO2/H2O gas analyzers (IRGA; EC150 and IRGASON), thus, further diversifying the choices for eddy covariance instrumentation. However, until recently, the performance of these two sensors for CO2 flux… More
The AmeriFlux Tech Team has completed another successful site visit season. This year, eight (8) site visits were completed. Here are a few images from the site visits. The Tech Team is planning for the 2017 site visit season. If you would like to learn more about site visits and what to expect, please see our… More
Michael Benson, site manager at Morgan Monroe State Forest (US-MMS), notified the Tech Team of an important safety bulletin that affects many AmeriFlux tower workers. Some ladder safety system sleeves, model Lad-Saf, sold by Capitol Safety under the DBI-SALA brand are affected. Please view the full notice and contact the manufacturer if appropriate. Thanks Michael!
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
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.
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
By Chad Hanson, AMP Tech Team. Many flux sites do not have access to line power, and run on solar power. This post shares my recent experience of building a simple solar system, and the design considerations that went into it. We hope this will help others as they design and maintain their own systems. Please use the Comments at the… More
Guest blog by David Moore, who organizes this annual course, with the help of many others. Fluxcourse 2015 – 8th annual summer course in flux measurements and advanced modeling We will be running the annual Fluxcourse this year July 20-31 2015. We plan to hold it at the Niwot Ridge Mountain Research Station once more, with the help… More
2014 AGU Tech Team poster