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RISEvaluation of Surface Fluxes from MM5 Using Observations
Publisher: American Meteorological Society
Abstract: Direct observations of surface fluxes of momentum, sensible, and latent heat from towers and aircraft are compared to output from the NCAR-Penn State Mesoscale Model MM5. The model flux parameterization is seen to work ...
Whirlwinds and Hairpins in the Atmospheric Surface Layer
Publisher: American Meteorological Society
Abstract: ortices in the atmospheric surface layer are characterized using observations at unprecedented resolution from a fixed array of 31 turbulence sensors. During the day, these vortices likely are dust devils, though no visual ...
Flux Measurement with Conditional Sampling
Publisher: American Meteorological Society
Abstract: A method is proposed to measure scalar fluxes using conditional sampling. Only the mean concentrations of updraft and downdraft samples, the standard deviation of the vertical velocity, and a coefficient of proportionality, ...
The Summertime Arctic Atmosphere: Meteorological Measurements during the Arctic Ocean Experiment 2001
Publisher: American Meteorological Society
Abstract: An atmospheric boundary layer experiment into the high Arctic was carried out on the Swedish ice-breaker Oden during the summer of 2001, with the primary boundary layer observations obtained while the icebreaker drifted ...
Experimental Equipment: A Supplement to The Summertime Arctic Atmosphere: Meteorological Measurements during the Arctic Ocean Experiment 2001
Publisher: American Meteorological Society
Atmospheric Response to a Partial Solar Eclipse over a Cotton Field in Central California
Publisher: American Meteorological Society
Abstract: The partial solar eclipse on 11 July 1991 in central California, with 58.3% maximum coverage, provided an exceptional opportunity to study the temporal response of processes in the atmospheric boundary layer to an abrupt ...
Surface-Layer Fluxes, Profiles, and Turbulence Measurements over Uniform Terrain under Near-Neutral Conditions
Publisher: American Meteorological Society
Abstract: An atmospheric surface-layer experiment over a nearly uniform plowed field was performed to determine the constants in the flux-profile similarity formulas, particularly the von Kármán constant. New instruments were ...
Heat Balance in the Nocturnal Boundary Layer during CASES-99
Publisher: American Meteorological Society
Abstract: A unique set of nocturnal longwave radiative and sensible heat flux divergences was obtained during the 1999 Cooperative Atmosphere?Surface Exchange Study (CASES-99). These divergences are based on upward and downward ...
A Cooperative Atmosphere–Surface Exchange Study (CASES) Dataset for Analyzing and Parameterizing the Effects of Land Surface Heterogeneity on Area-Averaged Surface Heat Fluxes
Publisher: American Meteorological Society
Abstract: A multiscale dataset that includes atmospheric, surface, and subsurface observations obtained from an observation network covering a region that has a scale order comparable to mesoscale and general circulation models is ...
An Evaluation of Calibration Techniques for In Situ Carbon Dioxide Measurements Using a Programmable Portable Trace-Gas Measuring System
Publisher: American Meteorological Society
Abstract: The construction and deployment of a portable trace-gas measurement system (TGaMS) is described. The air-collection system (dubbed HYDRA) collects air samples from 18 different locations and was connected to either one or ...