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QA'QC code for GL4 buoy sensors (RBR Tsolos, miniDOTs, miniPAR, and C7)

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QA'QC code for GL4 buoy sensors

The buoy is deploed in GL4 as a part of Niwot Ridge Long Term Ecological Research Program (https://nwt.lternet.edu/data)

The buoy is instramented with 8 invidual RBR sensors that measure temperature, 3 PME sensors that measure dissloved oxygen, 1 PME sensor that uses a Li-COR quantum sensor to measure photosynthetically active radiation, and 1 PME C7 sensor to opically measure chlorophyll concentration.

Workflow:

All scripts read in raw data from the Niwot LTER Server so initial file paths for inputDir and outputDir need to be modified for each user. For file output don't forget to move final files (pending datamanager approval) into final folder in server. Some files have been updated for a more dynamic workflow with variables that should be assigned file names near the top of the script below where the output/input variables are initialized. This is optional but is often useful.

Each year, the scripts used to QA/QC data need to be saved and pushed to NWTLTER/GL4_buoy_QAQC into a folder with the year included in the name. (For instance 2020_2021 includes the exact scripts used to QAQC the Winter 2020 and Summer 2021 data files). Therefore, when you begin QA_QC open the "Ongoing_Scripts" file for the sensor type that you need and immediately Save-As a new copy of that script "PME_". Examples: PME_C7_Winter_2020.R

Explaination of scripts:

All current scripts in which ongoing sensor QA'QC can take place are labeled with "_agg" within the folder "Ongoing_Scripts." Use these files to begin your QA_QC.

We included one script "PME_C7_aggCHLA" in which we try to correct C7 output for chlorophyll-a concnetrations. However this method looked a little questionable so we decided to cut it from the published data.

File names:

All raw data files are named with the sensor measurement (DO, PAR, C7, Temp), the sensor serial number, the deployment date range (07_03_08_21_2018, means July 3th 2018 to August 21st 2018) and deployment depth in meter.

QA'Qced scripts are named as deployment season and sensor type. So Summer19_PME_DO.csv has all of the QA'QC ed data from the 3 sensors aggregated from all deployments up until summer 2019.

Flagging codes:

n = no flag; m = missing; q = questionable; e = estimated; o = outlier

#Change log Miles Moore (2021_12_02) email: [email protected]

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QA'QC code for GL4 buoy sensors (RBR Tsolos, miniDOTs, miniPAR, and C7)

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