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RISThe Early Evening Surface-Layer Transition: Temporal and Spatial Variability
Publisher: American Meteorological Society
Abstract: On clear nights with appreciable radiative cooling, rates of change of mean quantities observed in the first 1 or 2 h after sunset are many times larger than they are subsequently until sunrise. These variations include ...
Climatic Consequences of Leaf Presence in the Eastern United States
Publisher: American Meteorological Society
Abstract: At the time of leaf emergence in deciduous forests, markedly enhanced evapotranspiration leads to a rapid drop in the Bowen ratio. A small fraction of this surface flux alteration converges into the boundary layer, and ...
A Simplified Model for Intermittent Turbulence in the Nocturnal Boundary Layer
Publisher: American Meteorological Society
Abstract: model for the exchange between the surface and the atmosphere under stable conditions is proposed. It is based on the classical scheme first suggested by Blackadar and comprises prognostic equations for the wind components ...
The Influence of Submeso Processes on Stable Boundary Layer Similarity Relationships
Publisher: American Meteorological Society
Abstract: revious observational studies in the stable boundary layer diverge appreciably on the values of dimensionless ratios between turbulence-related quantities and on their stability dependence. In the present study, the ...
Surface-to-Atmosphere Exchange in a River Valley Environment
Publisher: American Meteorological Society
Abstract: Observations of the turbulent exchange between a river surface and the atmosphere in a mountainous area in southern Brazil are presented and discussed. A micrometeorological tower was installed directly above the surface ...
Quasi-Experimental Determination of Turbulent Dispersion Parameters for Different Stability Conditions from a Tall Micrometeorological Tower
Publisher: American Meteorological Society
Abstract: AbstractTurbulent wind data measured by sonic anemometers installed at various heights on a 140-m-tall micrometeorological tower located at a coastal site are used to obtain vertical profiles of the velocity standard ...
Energy Partitioning and Evapotranspiration over a Rice Paddy in Southern Brazil
Publisher: American Meteorological Society
Abstract: uring approximately 80% of its growing season, lowland flooded irrigated rice ecosystems in southern Brazil are kept within a 5?10-cm water layer. These anaerobic conditions have an influence on the partitioning of the ...
Monitoring the Micrometeorology of a Coastal Site next to a Thermal Power Plant from the Surface to 140 m
Publisher: American Meteorological Society
Abstract: AbstractA 140-m micrometeorological tower has been operating since August 2016 at 4 km from the coastline and 250 m from a thermal power plant that releases heat from its 20-m stacks in southeastern Brazil. The measurements ...
Linking Meteorology, Turbulence, and Air Chemistry in the Amazon Rain Forest
Publisher: American Meteorological Society
Abstract: e describe the salient features of a field study whose goals are to quantify the vertical distribution of plant-emitted hydrocarbons and their contribution to aerosol and cloud condensation nuclei production above a central ...