Rocky Mountain Research Station Publications

RMRS Online Publication - Journal Articles, External Publications, and Special Reports
How well can we measure the vertical wind speed? Implications for fluxes of energy and mass


Kochendorfer, John; Meyers, Tilden P.; Frank, John; Massman, William J.; Heuer, Mark W. 2012. How well can we measure the vertical wind speed? Implications for fluxes of energy and mass. Boundary-Layer Meteorology. 145: 383-398.

doi: 10.1007/s10546-012-9738-1.

Sonic anemometers are capable of measuring the wind speed in all three dimensions at high frequencies (10­50 Hz), and are relied upon to estimate eddy-covariance-based fluxes of mass and energy over a wide variety of surfaces and ecosystems. In this study, wind-velocity measurement errors from a three-dimensional sonic anemometer with a nonorthogonal transducer orientation were estimated for over 100 combinations of angle-ofattack and wind direction using a novel technique to measure the true angle-of-attack and wind speed within the turbulent atmospheric surface layer. Corrections to the vertical wind speed varied from -5 to 37% for all angles-of-attack and wind directions examined.

Keywords: (Co)sine correction, eddy covariance, energy budget closure, greenhouse gas emissions, sonic anemometer angle-of-attack correction, surface-atmosphere exchange


About PDFs: For best results, do not open the PDF in your Web browser. Right-click on the PDF link to download the PDF file directly to your computer. Click here for more PDF help.


Download Article
http://www.fs.fed.us/rm/pubs_other/rmrs_2012_kochendorfer_j001.pdf

PDF File Size: 805 K


Title: RMRS Other Publications: How well can we measure the vertical wind speed? Implications for fluxes of energy and mass
Electronic Publish Date: October 9, 2012
Last Update:
October 9, 2012

RMRS Publications | Order a publication | Contact Us