[1052] - Water Vapor Turbulence Profiles in Stationary 5 Continental Convective Mixed Layers

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Turner, D., Wulfmeyer, V., Berg, L., Schween, J., 2014. Water Vapor Turbulence Profiles in Stationary 5 Continental Convective Mixed Layers. Journal of Geophysical Research, nys (nys), 1 - 53.
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Title(s):Main Title: Water Vapor Turbulence Profiles in Stationary 5 Continental Convective Mixed Layers
Description(s):Abstract: The U.S. Department of Energy Atmospheric Radiation Measurement (ARM) program’s Raman lidar at the ARM Southern Great Plains (SGP) site in north-central Oklahoma has collected water vapor mixing ratio (q) profile data more than 90% of the time since October 2004. Three hundred (300) cases were identified where the convective boundary layer was quasi-stationary and well-mixed for a 2-hour period, and q mean, variance, third order moment, and skewness profiles were derived from the 10-s, 75-m resolution data. These cases span the entire calendar year, and demonstrate that the q variance profiles at the mixed layer (ML) top changes seasonally, and is strongly related to the gradient of q across the interfacial layer. The q variance at the top of the ML shows only weak correlations (r < 0.3) with sensible heat flux, Deardorff convective velocity scale, and turbulence kinetic energy measured at the surface. The median q skewness profile is most negative at 0.85 zi, zero at approximately zi, and positive above zi, where zi is the depth of the convective ML. The spread in the q skewness profiles is smallest between 0.95 zi and zi. The q skewness at altitudes between 0.6 zi and 1.2 zi is correlated with the magnitude of the q variance at zi, with increasingly negative values of skewness observed lower down in the ML as the variance at zi increases, suggesting that in cases with larger variance at zi there is deeper penetration of the warm, dry free tropospheric air into the ML.
Citation Advice:Turner, D.D., V. Wulfmeyer, L. K. Berg, and J.H. Schween: Water Vapor Turbulence Profiles in Stationary Continental Convective Mixed Layers, Journal of Geophysical research – Atmospheres, accepted (12.9.2014)
Responsible Party
Creator(s):Author: David Turner
Author: Volker Wulfmeyer
Author: Larry Berg
Author: Jan Schween
Publisher:Amercan Geophysical union
TR32 Topic:Atmosphere
Subject(s):CRC/TR32 Keywords: Water Vapour, Turbulence, LIDAR
Topic Category:ClimatologyMeteorologyAtmosphere
File Details
File Name:Turner_et_al_2014_JGR_rev_submitted.pdf
Data Type:Text
File Size:1190 kB (1.162 MB)
Date(s):Date Accepted: 2014-09-12
Mime Type:application/pdf
Data Format:PDF (4.5)
Download Permission:OnlyTR32
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:Other
Measurement Location:--Other--
Specific Informations - Publication
Source:Journal of Geophysical Research
Number Of Pages:53
Page Range:1 - 53
Metadata Details
Metadata Creator:Jan Schween
Metadata Created:2014-09-17
Metadata Last Updated:2014-09-17
Funding Phase:2
Metadata Language:English
Metadata Version:V40
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