The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2018
Filed:
Apr. 06, 2012
George G. Burba, Lincoln, NE (US);
Dayle Mcdermitt, Lincoln, NE (US);
Xiaomao Lin, Lincoln, NE (US);
Liukang Xu, Lincoln, NE (US);
Dave Johnson, Lincoln, NE (US);
George G. Burba, Lincoln, NE (US);
Dayle McDermitt, Lincoln, NE (US);
Xiaomao Lin, Lincoln, NE (US);
Liukang Xu, Lincoln, NE (US);
Dave Johnson, Lincoln, NE (US);
Li-Cor, Inc., Lincoln, NE (US);
Abstract
Systems and methods for measuring turbulent gas flux using high-speed vertical wind speed measurements (e.g., on the order of 5-10 Hz or more frequently) and low-speed gas content measurements (e.g., on the order of 5 Hz or less frequently), without the need for the sophisticated and expensive high-speed hardware to separate gas samples (e.g., into accumulation bags) according to updrafts and downdrafts. A time series of high-speed vertical wind speed data is used as a guide to distinguish between updrafts and downdrafts. When vertical wind speed is upward (updraft), the low-speed gas content is recorded into a data structure in one location, or marked with one flag. When vertical wind speed is downward (downdraft), the low-speed gas content is recorded into a different location, or marked with a different flag. Eddy Accumulation or Relaxed Eddy Accumulation computations can be performed using the stored gas content data to determine gas flux.