NewsLine - September 2008 Issue
  Dig it! The Secrets of Soil pic

Unearthing, both figuratively and literally, the world beneath our feet is the goal of the Smithsonian's National Museum of Natural History exhibition, Dig it! The Secrets of Soil. The 5,000 square foot exhibition opened on July 19 in Washington, D.C., and will run through January 2010.

The Smithsonian notes that there are more living creatures in a shovel full of rich soil than human beings on the planet. Yet more is known about the dark side of the moon than about soil[s]. More...

LI-7000 Used To Regulate Suspended Animation hutch/index.jsp

At the Fred Hutchinson Cancer Research Institute in Seattle Washington, researchers in the Institute’s Division of Basic Sciences are making interesting use of the LI-7000 CO₂/H₂O Gas Analyzer. A team of scientists from the laboratory of Dr. Mark Roth use the LI-7000 to measure CO₂ exhalation of mice and other animals in controlled conditions that inhibit oxygen utilization and decrease metabolic rate (MR). More...


hutch/index.jspConference Papers Available from Ag and Forest Meteorology Conference and Atmospheric BioGeoSciences

Recent papers in PDF format by LI-COR scientists:

  • Influence of instrument surface heat exchange on CO₂ flux from open-path gas analyzers
  • Guidelines for Eddy Covariance Method
  • More...

hutch/index.jspIn the News

Brighter Side

A recent story in The New York Times examines the "Brighter Side of High Prices" for agricultural crops. A photograph of the  LI-COR LI-6400 Portable Photosynthesis System is shown in use monitoring drought-resistant corn in Davis, Califorina.

"Brighter Side of High Prices" at The New York Times

Wiki Watch: Articles of Interest

Flux Footprint

Flux footprint (aka atmospheric flux footprint, footprint) is an upwind area where the atmospheric flux measured by an instrument is generated. Specifically, the term flux footprint describes an upwind area “seen” by the instruments measuring vertical turbulent fluxes, such that heat, water, gas and momentum transport generated in this area is registered by the instruments. Another frequently used term, fetch, usually refers to the distance from the tower when describing the footprint.

Wikipedia Flux Footprint Article

Eddy Covariance

The eddy covariance (eddy correlation, eddy flux) technique is a prime atmospheric flux measurement technique to measure and calculate vertical turbulent fluxes within atmospheric boundary layers. It is a statistical method used in meteorology and other applications that analyzes high-frequency wind and scalar atmospheric data series, and yields values of fluxes of these properties. Such flux measurements are widely used to estimate momentum, heat, water, and carbon dioxide exchange, as well as exchange of methane and other trace gases.

Wikipedia Eddy Covariance Article

 

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