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Surface Meteorological Station - ANL 50m, Sonic, Physics site-12 - Raw Data

Publicly accessible License 

**Overview**

Measurements of surface sensible heat flux, momentum flux, wind components, and virtual temperature.

**Data Details**

* X (column 1) is a component of wind cm/s plus toward north.
* Y (column 2) is a component of wind cm/s plus toward east.
* Z (column 3) is a component of wind cm/s plus up.
* T (column 4) is sonic virtual temperature in degrees C*100.
* hh:mm:ss is data collection time in UTC.

**Data Quality**

The Argonne National Laboratory sonic anemometer measurements are visually inspected weekly for data outliers or instrument problems. The final dataset sent to the DAP will have all outliers or problematic data removed using automated and visual processes, including minimum/maximum checks, in a similar process used for Atmospheric Radiation Measurement (ARM) program eddy correlation (ECOR) data.

**Uncertainty**

The uncertainties of the basic sonic anemometer measurements are taken to be the accuracy of the individual measurements as specified by the instrument manufacturer. Based on historical experience with this measurement technique, flux measurement uncertainty is +/- 10 percent, although the uncertainty can be much greater during stable atmospheric conditions when turbulence intensity and atmospheric gradients are small and advection from beyond the normal fetch can occur. In particular, the Physics Site-12 tower's sonic anemometer measurements can have greater uncertainty when the wind blows through the tower structure.

**Constraints**

During stable atmospheric conditions, turbulence intensity and atmospheric gradients often are small, approaching or exceeding the measurement resolution of sonic anemometers. Under these conditions, advection from beyond the normal fetch also can occur, making interpretation of the fluxes difficult. Notably, the Physics Site-12 tower sonic anemometer measurements can be affected when the wind blows through the tower structure. Some unusual biases in the vertical velocities measured at the Physics Site-12 tower with west wind conditions also have not been adequately explained.

Citation Formats

Wind Energy Technologies Office (WETO). (2016). Surface Meteorological Station - ANL 50m, Sonic, Physics site-12 - Raw Data [data set]. Retrieved from https://dx.doi.org/10.21947/1328899.
Export Citation to RIS
Cook, David. Surface Meteorological Station - ANL 50m, Sonic, Physics site-12 - Raw Data. United States: N.p., 15 Jul, 2016. Web. doi: 10.21947/1328899.
Cook, David. Surface Meteorological Station - ANL 50m, Sonic, Physics site-12 - Raw Data. United States. https://dx.doi.org/10.21947/1328899
Cook, David. 2016. "Surface Meteorological Station - ANL 50m, Sonic, Physics site-12 - Raw Data". United States. https://dx.doi.org/10.21947/1328899. https://a2e.energy.gov/data/wfip2/met.z30.00.
@div{oedi_4379, title = {Surface Meteorological Station - ANL 50m, Sonic, Physics site-12 - Raw Data}, author = {Cook, David.}, abstractNote = {**Overview**

Measurements of surface sensible heat flux, momentum flux, wind components, and virtual temperature.

**Data Details**

* X (column 1) is a component of wind cm/s plus toward north.
* Y (column 2) is a component of wind cm/s plus toward east.
* Z (column 3) is a component of wind cm/s plus up.
* T (column 4) is sonic virtual temperature in degrees C*100.
* hh:mm:ss is data collection time in UTC.

**Data Quality**

The Argonne National Laboratory sonic anemometer measurements are visually inspected weekly for data outliers or instrument problems. The final dataset sent to the DAP will have all outliers or problematic data removed using automated and visual processes, including minimum/maximum checks, in a similar process used for Atmospheric Radiation Measurement (ARM) program eddy correlation (ECOR) data.

**Uncertainty**

The uncertainties of the basic sonic anemometer measurements are taken to be the accuracy of the individual measurements as specified by the instrument manufacturer. Based on historical experience with this measurement technique, flux measurement uncertainty is +/- 10 percent, although the uncertainty can be much greater during stable atmospheric conditions when turbulence intensity and atmospheric gradients are small and advection from beyond the normal fetch can occur. In particular, the Physics Site-12 tower's sonic anemometer measurements can have greater uncertainty when the wind blows through the tower structure.

**Constraints**

During stable atmospheric conditions, turbulence intensity and atmospheric gradients often are small, approaching or exceeding the measurement resolution of sonic anemometers. Under these conditions, advection from beyond the normal fetch also can occur, making interpretation of the fluxes difficult. Notably, the Physics Site-12 tower sonic anemometer measurements can be affected when the wind blows through the tower structure. Some unusual biases in the vertical velocities measured at the Physics Site-12 tower with west wind conditions also have not been adequately explained.}, doi = {10.21947/1328899}, url = {https://a2e.energy.gov/data/wfip2/met.z30.00}, journal = {}, number = , volume = , place = {United States}, year = {2016}, month = {07}}
https://dx.doi.org/10.21947/1328899

Details

Data from Jul 15, 2016

Last updated Oct 11, 2021

Submitted Sep 16, 2016

Organization

Wind Energy Technologies Office (WETO)

Contact

David Cook

630.252.5840

Authors

David Cook

Argonne National Laboratory

Research Areas

DOE Project Details

Project Name Wind Data Hub

Project Number 67025

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