SOW.docx

The Hydrology & Remote Sensing Laboratory needs to purchase a flux tower instrument package for measurement of CH4, CO2 and H2O. Li-COR Inc. is the sole provider of compact open path laser sensors for methane that can be incorporated in flux tower systems.

This integrate package for measuring surface heat and trace gas fluxes in conjunction with local micrometeorological conditions is both unique and has multiple advantages over other systems that could be built piece-wise using instrumentation from other vendors. The integrated system ensures there is a consistent communication protocol for all components of the system that

i) conform to well-established programming and operational protocols

ii) respond reliably and accurately to the system controller, and

iii) provide the synchronous measurements that are required by the eddy covariance method and other analysis techniques.

Similarly, it facilitates accurate data storage and transmission via computer and wireless communication network, simplifying deployment in remote areas. Likewise, the SMARTFlux data analysis allows for accurate and consistent data processing, including the full suite of standard post-processing procedures and system diagnostics, in near real-time.

Also, although it is not a specific design feature of the Li-Cor package , it is important to note that HRSL scientists have accrued considerable experience working with these Li-Cor systems. Continued use of Li-Cor instruments will leverage that experience greatly and , thereby, streamline all aspects of the field research from developing controller programs to deploying the eddy covariance system to managing and processing the raw data.

Although no other vendors offer a similar package, key components of the Li-Cor system can (in some cases) be compared to instrumentation from other vendors. Pricing information can be obtained online