DOI: 10.1016/j.atmosenv.2020.117516
论文题名: Meteorological data recommendations for input to dispersion models applied to Jack Rabbit II trials
作者: Hanna S.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 235 语种: 英语
英文关键词: Boundary layer flow
; Boundary layers
; Dispersions
; Energy balance
; Landforms
; Meteorology
; Surface roughness
; Towers
; Wind
; Dispersion modeling
; Meteorological condition
; Meteorological data
; Meteorological input
; Meteorological observation
; Meteorological variables
; Surface boundary-layer
; Surface roughness length
; Chlorine
; chlorine
; anemometer
; boundary layer
; chlorine
; energy balance
; heat flux
; numerical model
; surface roughness
; surface wind
; vertical profile
; wind direction
; Article
; boundary layer
; comparative study
; controlled study
; dispersion
; energy balance
; field experiment
; hare
; humidity
; meteorology
; nonhuman
; priority journal
; surface property
; temperature
; water vapor
; wind speed
; United States
; Utah
; Lepus
学科: Chlorine field experiment
; Dense gas dispersion models
; Dugway Proving ground
; Jack Rabbit II
; Meteorological boundary layer instruments
; Monin-Obukhov similarity theory
中文摘要: The Jack Rabbit II (JR II) chlorine field experiment observations are being used in a multi-dispersion model comparison exercise. So that all models are using consistent meteorological inputs, we analyzed the many early-morning meteorological observations that were taken at Dugway Proving Ground (DPG), Utah, during the nine chlorine release trials during JR II to produce recommendations for surface and vertical profile meteorological variables. The JR II field experiment included a mesonetwork of about 35 surface wind sites, a surface energy balance site, three 32 m towers located 1 km apart, and several vertical sounding instruments. The challenge is to determine a single set of meteorological inputs for the dispersion models. It is assumed that the recommended meteorological conditions represent the flat desert about 100 m upwind of the chlorine release location. Recommendations of surface winds, and momentum and sensible heat fluxes for each early-morning field trial are based on averages of sonic anemometer observations at 2 m on the upwind 32 m tower and at 2.5 m on a nearby “Energy Balance” station, for the half hour period during which the chlorine release took place. These observations were also used to estimate the surface roughness length, zo = 0.5 mm, for the flat desert. Single vertical profiles of wind speed, wind direction, and temperature are specified for each trial for a time close to the chlorine release time, based on medians of observations at five levels on the three 32 m towers, a radiosonde, a minisodar, and two wind profilers (449 MHz and 921 MHz). During the early morning releases, as the sun rose and heated the surface, the boundary layer was transient. The surface boundary layer was stable for releases from about 7:30 to about 8:30 (local time) and was marked by a shallow mixed layer (about 8–16 m) for releases during the next hour. Above the 32 m tower tops, the atmosphere was stable during all release trials up to elevations of a few hundred meters. Large wind direction shears were usually found in this layer, since the near-surface flow was a drainage (katabatic) down-valley flow (from about 165°), while the synoptic flow above 100 m was from the west. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160262
Appears in Collections: 气候变化与战略
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作者单位: Hanna Consultants, Kennebunkport, ME, United States
Recommended Citation:
Hanna S.. Meteorological data recommendations for input to dispersion models applied to Jack Rabbit II trials[J]. Atmospheric Environment,2020-01-01,235