Archive for February, 2012

LI-6400XT System Tech Tip: Dealing with Large Moist Samples

Tuesday, February 28th, 2012

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With large chambers such as the 6400-24 Bryophyte Chamber, the 6400-05 and 6400-22 Conifer Chambers, or a large custom chamber, it is possible to measure large samples.  An advantage of large samples is that larger CO2 differentials are possible, even at lower photosynthesis rates, leading to higher precision in the photosynthesis measurement.  With large moist…

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Posted in LI-6400XT, Photosynthesis, Tech Tips | 2 Comments »

Adjusting the LI-8150 Flow Rate

Wednesday, February 15th, 2012

First generation LI-8150 multiplexers, which used a rotary vane pump, provided an adjustable flow rate of 2 to 4 LPM. This functionality was lost when the LI-8150 was upgraded to the more rugged diaphragm pump. However, control over the multiplexer flow rate can be restored through a simple hardware modification. This is accomplished by replacing…

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Posted in LI-8100A, Tech Tips | No Comments »

FLUXNET Takes a Look at Sites Measuring Methane Emissions

Monday, February 6th, 2012

The January 2012 issue of FluxLetter-The Newsletter of Fluxnet-focuses on methane flux measurements within the FLUXNET community. This issue includes profiles of several wetland and peatland research sites around the world where scientists measure methane emissions. It provides a list of other methane flux research sites, as well as the habitat type, the year measurements began and…

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Posted in Gas Analyzers | 3 Comments »

Enviscope project uses airborne method to detect ship plume pollution

Wednesday, February 1st, 2012

Ships are large emission sources of pollutants. According to a recent report, ship emissions of sulfur and NOx in Europe are projected to exceed the land based emissions by 2020. To detect these emissions, Enviscope GmbH and scientists from Chalmers University are working together on an airborne project. Their project detects ship plume pollution by…

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Posted in What's New | No Comments »