搜索结果: 1-15 共查到“理学 flux measurements”相关记录16条 . 查询时间(0.059 秒)
Continuous SO2 flux measurements for Vulcano Island,Italy
SO2 Differential optical absorption spectroscopy Vulcano Island Network for Observation of Volcanic and Atmospheric Change
2015/8/24
The La Fossa cone of Vulcano Island (Aeolian Archipelago, Italy) is a closed conduit volcano. Today, Vulcano Island is characterized by sulfataric activity, with a large fumarolic field that is mainly...
BVOC ecosystem flux measurements at a high latitude wetland site
BVOC ecosystem flux measurements high latitude wetland site
2010/2/21
In this study, we present summertime concentrations and fluxes of biogenic volatile organic compounds (BVOCs) measured at a sub-arctic wetland in northern Sweden using a disjunct eddy-covariance (DEC)...
Constraining the concentration of the hydroxyl radical in a stratocumulus-topped marine boundary layer from sea-to-air eddy covariance flux measurements of dimethylsulfide
hydroxyl radical stratocumulus-topped marine boundary layer sea-to-air eddy covariance flux measurements
2009/12/31
The hydroxyl radical (OH) is an important oxidant in the troposphere due to its high reactivity and relative abundance. Measuring the concentration of OH in situ, however, is technically challenging. ...
Eddy covariance flux measurements of pollutant gases in urban Mexico City
Eddy covariance flux measurements pollutant gases urban Mexico City
2009/10/9
Eddy covariance (EC) flux measurements of the atmosphere/surface exchange of gases over an urban area are a direct way to improve and evaluate emissions inventories, and, in turn, to better understand...
Advection of NH3 over a pasture field and its effect on gradient flux measurements
Advection NH3 pasture field gradient flux measurements
2010/1/20
Deposition of atmospheric ammonia (NH3) to semi-natural ecosystems leads to serious adverse effects, such as acidification and eutrophication. A step in quantifying such effects is the measurement of ...
The impact of broadleaved woodland on water resources in lowland UK：II. Evaporation estimates from sensible heat flux measurements over beech woodland and grass on chalk sites in Hampshire
broadleaved woodland heat flux water resources chalk sites
2009/5/18
The impact on recharge to the Chalk aquifer of substitution of broadleaved woodland for pasture is a matter of concern in the UK. Hence, measurements of energy balance components were made above beech...
Mixing ratios and eddy covariance flux measurements of volatile organic compounds from an urban canopy
Mixing ratios eddy covariance flux measurements volatile organic urban canopy
2009/3/31
Mixing ratios and fluxes of six selected volatile organic compounds (VOCs) were measured above the city of Manchester (UK) during the summer of 2006. A proton transfer reaction-mass spectrometer was u...
Emissions of volatile organic compounds inferred from airborne flux measurements over a megacity
volatile organic compounds airborne flux measurements megacity
2009/3/12
Toluene and benzene are used for assessing the ability to measure disjunct eddy covariance (DEC) fluxes of Volatile Organic Compounds (VOC) using Proton Transfer Reaction Mass Spectrometry (PTR-MS) on...
Open Ocean Momentum Flux Measurements in Moderate to Strong Winds
Ocean Momentum Flux Measurements Strong Winds
2009/2/9
Measurements of the momentum flux were made by the Reynolds flux and dissipation methods on a deep water stable tower operated by the Bedford Institute of Oceanography, A modified Gill propeller-vane ...
Sensible and Latent Heat Flux Measurements over the Ocean
Latent Heat Flux Measurements sensible heat
2009/2/7
This papar presents an extensive act of sensible heat (Reynolds flux and dissipation methods) and latent heat (dissipation method) flux measurements from a stable deep water tower and from ships on th...
Eddy covariance flux measurements of biogenic VOCs during ECHO 2003 using proton transfer reaction mass spectrometry
Eddy covariance flux measurements biogenic VOCs proton transfer reaction mass spectrometry
2009/2/6
Within the framework of the AFO 2000 project ECHO, two PTR-MS instruments were operated in combination with sonic anemometers to determine biogenic VOC fluxes from a mixed deciduous forest site in Nor...
Technical note: Water vapour concentration and flux measurements with PTR-MS
Water vapour concentration flux measurements PTR-MS
2009/1/16
The most direct approach for measuring the exchange of biogenic volatile organic compounds between terrestrial ecosystems and the atmosphere is the eddy covariance technique. It has been applied sever...
Vertical Heat-Flux Measurements from a Neutrally Buoyant Float
Neutrally Buoyant Float net heat flux near-inertial critical layer
2008/12/10
A neutrally buoyant float instrumented to measure 1–5 m shear and stratification was deployed for ten days in a near-inertial critical layer at the base of a warm-core ring. Vertical velocity and temp...
Suitability of quantum cascade laser spectroscopy for CH4 and N2O eddy covariance flux measurements
Suitability quantum cascade laser spectroscopy CH4 N2O eddy covariance flux measurements
2010/1/14
A quantum cascade laser spectrometer was evaluated for eddy covariance flux measurements of CH4 and N2O using three months of continuous measurements at a field site. The required criteria for eddy co...
Eddy correlation flux measurements: The sediment surface area that contributes to the flux
Eddy correlation flux measurements sediment surface area contributes to the flux
2014/4/22
We investigated the size and shape of the area on the sediment surface, the so-called footprint, that contributes to the flux in subaqueous eddy correlation measurements. Tracer tracking simulations w...