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Title: Protocol for computation of surface boundary layer parameters used to determine soil moisture flux from meteorological data collected at LLNL, 1992--93

Abstract

Starting May 1992, meteorological data is continuously collected for Environmental Restoration Division (ERD) at the LLNL weather-tower site. Mounted on a 2-meter mast are sensors for air temperature, wind speed and direction, relative humidity, net radiation flux, and ground heat flux. Table 1 lists the height of the sensors and the sensor accuracies. These sensors are sampled every second and 15-minute averages are saved by the data logger for retrieval. Average and standard deviation ({sigma}{sub {theta}}) of wind direction are computed by the Campbell logger (Campbell Scientific, Model CR-10) using polar coordinates as described in Yamartino (1984). This report describes the reduction of continuously monitored data from 15-minute averages to hourly averages. The bulk of this report is dedicated to describing the computation of parameters that characterize the surface boundary layer. The ultimate goal is to provide estimates of the amount of evaporation of water from the surface.

Authors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10177264
Report Number(s):
UCRL-ID-113516
ON: DE93018906
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Mar 1993
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; WIND; MONITORING; BOUNDARY LAYERS; HEAT FLUX; METEOROLOGY; ENVIRONMENT; HUMIDITY; MATHEMATICAL MODELS; 580000; GEOSCIENCES

Citation Formats

Gouveia, F. Protocol for computation of surface boundary layer parameters used to determine soil moisture flux from meteorological data collected at LLNL, 1992--93. United States: N. p., 1993. Web. doi:10.2172/10177264.
Gouveia, F. Protocol for computation of surface boundary layer parameters used to determine soil moisture flux from meteorological data collected at LLNL, 1992--93. United States. https://doi.org/10.2172/10177264
Gouveia, F. 1993. "Protocol for computation of surface boundary layer parameters used to determine soil moisture flux from meteorological data collected at LLNL, 1992--93". United States. https://doi.org/10.2172/10177264. https://www.osti.gov/servlets/purl/10177264.
@article{osti_10177264,
title = {Protocol for computation of surface boundary layer parameters used to determine soil moisture flux from meteorological data collected at LLNL, 1992--93},
author = {Gouveia, F},
abstractNote = {Starting May 1992, meteorological data is continuously collected for Environmental Restoration Division (ERD) at the LLNL weather-tower site. Mounted on a 2-meter mast are sensors for air temperature, wind speed and direction, relative humidity, net radiation flux, and ground heat flux. Table 1 lists the height of the sensors and the sensor accuracies. These sensors are sampled every second and 15-minute averages are saved by the data logger for retrieval. Average and standard deviation ({sigma}{sub {theta}}) of wind direction are computed by the Campbell logger (Campbell Scientific, Model CR-10) using polar coordinates as described in Yamartino (1984). This report describes the reduction of continuously monitored data from 15-minute averages to hourly averages. The bulk of this report is dedicated to describing the computation of parameters that characterize the surface boundary layer. The ultimate goal is to provide estimates of the amount of evaporation of water from the surface.},
doi = {10.2172/10177264},
url = {https://www.osti.gov/biblio/10177264}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Mar 01 00:00:00 EST 1993},
month = {Mon Mar 01 00:00:00 EST 1993}
}