LI-840/850 Infrared Gas Analyzer Downtime Resulting in Data Flags and Gaps

The LI-840/850 Infrared Gas Analyzer has had an increased failure rate since July 2024. Root causes have been identified and corrective actions are in progress. Overall, this has led to multiple data gaps and periods of flagged data. Observatory staff are continuing to work on improvements to minimize the impacts and resolve this as quickly as possible.

NaN values and raised quality flags occur in these data products, which are contained in the bundled eddy-covariance file (DP4.00200.001):

• DP1.00100 H2O concentration - storage
• DP1.00099 CO2 concentration - storage
• DP2.00008 CO2 concentration rate of change
• DP2.00009 H2O concentration rate of change
• DP3.00009 CO2 concentration rate of change profile
• DP3.00010 H2O concentration rate of change profile
• DP4.00067 Carbon dioxide flux
• DP4.00137 Latent heat flux

Please use the Contact Us form for further inquiries; select DP4.00200.001 or any of the constituent data products listed above in the Data Product dropdown list and include the term “PRB0041130“ in the body of your request.