Improving bulk C n2models for over-ocean applications through new determinations of the dimensionless temperature structure parameter

2007 ◽  
Author(s):  
Paul A. Frederickson ◽  
Stephen Hammel ◽  
Dimitri Tsintikidis
Keyword(s):  
Dimensionless Temperature ◽  
Temperature Structure ◽  
Structure Parameter ◽  
Temperature Structure Parameter

Thermosonde Measurement of Temperature Structure Parameter and Temperature Spectral Power-Law Exponent Profile in the Lower Stratosphere

2014 ◽  
Vol 34 (5) ◽  
pp. 0501001
Author(s):  
吴晓庆 Wu Xiaoqing ◽  
黄宏华 Huang Honghua ◽  
钱仙妹 Qian Xianmei ◽  
汪平 Wang Ping ◽  
崔朝龙 Cui Chaolong
Keyword(s):  
Power Law ◽  
Lower Stratosphere ◽  
Spectral Power ◽  
Temperature Structure ◽  
Structure Parameter ◽  
Temperature Structure Parameter ◽  
Power Law Exponent

scholarly journals On the Temperature Structure Parameter and Sensible Heat Flux over Helsinki from Sonic Anemometry and Scintillometry

2013 ◽  
Vol 30 (8) ◽  
pp. 1604-1615 ◽  
Author(s):  
C. R. Wood ◽  
R. D. Kouznetsov ◽  
R. Gierens ◽  
A. Nordbo ◽  
L. Järvi ◽  
...  
Keyword(s):  
Heat Flux ◽  
Measurement Techniques ◽  
Sonic Anemometer ◽  
Sensible Heat Flux ◽  
Temperature Structure ◽  
Sensible Heat ◽  
Structure Parameter ◽  
Large Variability ◽  
Temperature Structure Parameter ◽  
Depth Analysis

Abstract Two commercial large-aperture scintillometers, Scintec BLS900, were tested on pathlengths of 1840 and 4200 m at about 45–65 m above ground in Helsinki, Finland. From July 2011 through June 2012, large variability in diurnal and annual cycles of both the temperature structure parameter and sensible heat flux were observed. Scintillometer data were compared with data from two eddy-covariance stations. A robust method was developed for the calculation of from raw sonic-anemometer data. In contrast to many earlier studies that solely present the values of , the main focus here is on comparisons of itself. This has advantages, because optical-wavelength scintillometers measure with few assumptions, while the determination of implies the applicability of the Monin–Obukhov similarity theory, which has several inherent limitations. The histograms of compare well between sonic and scintillometer. In-depth analysis is focused on one of the scintillometer paths: both and comparisons gave similar and surprisingly high correlation coefficients (0.85 for and 0.84–0.95 for in unstable conditions), given the differences between the two measurement techniques, substantial sensor separation, and different source areas.

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