搜索结果: 1-15 共查到“地球科学总论 Measurement”相关记录19条 . 查询时间(0.187 秒)
Evaluation of roadway Gaussian plume models with large-scale measurement campaigns
roadway Gaussian plume models large-scale measurement campaigns
2014/12/16
Gaussian models are commonly used to simulate atmospheric pollutant dispersion near sources because they provide an efficient compromise between reasonable accuracy and manageable computational time. ...
Field inter-comparison of eleven atmospheric ammonia measurement techniques
Field inter-comparison eleven atmospheric ammonia measurement techniques
2010/1/27
Eleven instruments for the measurement of ambient concentrations of atmospheric ammonia gas (NH3), based on eight different measurement methods were inter-compared above an intensively managed agricul...
Measurement of relative humidity dependent light scattering of aerosols
Measurement relative humidity dependent light scattering aerosols
2010/1/21
Relative humidity (RH) influences the water content of aerosol particles and therefore has an important impact on the particles' ability to scatter visible light. The RH dependence of the particle lig...
《Atmospheric Measurement Techniques》（图）
Atmospheric Measurement Techniques gases aerosols clouds the Earth’s atmosphere
2010/1/7
Atmospheric Measurement Techniques (AMT) is an international scientific journal dedicated to the publication and discussion of advances in remote sensing, in-situ and laboratory measurement techniques...
Stability analysis of apparent resistivity measurement in the seismically active area of Val d'Agri (southern Italy)
Stability analysis apparent resistivity measurement the seismically active
2009/12/14
A magnetotelluric monitoring station has been installed in the Val d'Agri area (southern Italy), to investigate the physics underlying the generation mechanisms of the electrokinetic effect, due to ra...
A nonlinear model coupling rockfall and rainfall intensity based \newline on a four year measurement in a high Alpine rock wall (Reintal,German Alps)
nonlinear model rainfall intensity four year measurement high Alpine rock wall
2009/12/8
A total of more than 140 000 kg of small-magnitude rockfall deposits was measured in eight rockfall collectors of altogether 940 m2 in size between 1999–2003 below a 400–600 m high rock face in the Re...
Measurement and modelling ozone fluxes over a cut and fertilized grassland
Measurement modelling ozone fluxes cut fertilized grassland
2009/10/2
During the GRAMINAE Integrated Experiment between 20 May and 15 June 2000, the ozone flux was measured by the eddy covariance method above intensively managed grassland in Braunschweig, northern Germa...
Measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm
specific surface area snow infrared reflectance integrating sphere
2009/8/3
Even though the specific surface area (SSA) and the snow area index (SAI) of snow are crucial variables to determine the chemical and climatic impact of the snow cover, few data are available on the s...
Development of an H-TDMA for long-term unattended measurement of the hygroscopic properties of atmospheric aerosol particles
H-TDMA long-term unattended measurement hygroscopic properties atmospheric aerosol particles
2009/6/30
A new hygroscopic tandem differential mobility analyzer (H-TDMA) has been constructed at Lund University within the frameworks of the EU FP6 Infrastructure Project EUSAAR (http://www.eusaar.org/). The...
An experimental technique for the direct measurement of N2O5 reactivity on ambient particles
experimental technique direct measurement N2O5 reactivity ambient particles
2009/6/16
An experimental approach for the direct measurement of trace gas reactivity on ambient aerosol particles has been developed. The method utilizes a newly designed entrained aerosol flow reactor coupled...
Measurement of atmospheric sesquiterpenes by proton transfer reaction-mass spectrometry (PTR-MS)
Measurement atmospheric sesquiterpenes proton transfer reaction-mass spectrometry
2009/4/9
The ability to measure sesquiterpenes (SQT; C15H24) by a Proton-Transfer-Reaction Mass Spectrometer (PTR-MS) was investigated. SQT calibration standards were prepared by a capillary diffusion method a...
An automated dynamic chamber system for surface exchange measurement of non-reactive and reactive trace gases of grassland ecosystems
dynamic chamber system surface exchange measurement grassland ecosystems
2009/3/18
We present an automated dynamic chamber system which is optimised for continuous unattended flux measurements of multiple non-reactive and reactive trace gases on grassland ecosystems. Main design fea...
A cavity ring down/cavity enhanced absorption device for measurement of ambient NO3 and N2O5
cavity ring down cavity enhanced absorption device ambient NO3 N2O5
2009/1/7
An inexpensive, compact instrument for the sensitive measurement of NO3 and N2O5 in ambient air at high time resolution is described. Light from a red-emitting laser diode (≈662 nm) is coupled off-axi...
Measurement depth effects on the apparent temperature sensitivity of soil respiration in field studies
Measurement depth effects apparent temperature sensitivity soil respiration
2008/8/26
CO2 efflux at the soil surface is the result of respiration in different depths that are subjected to variable temperatures at the same time. Therefore, the temperature measurement depth affects the a...
Glacier annual balance measurement,forecasting and climate correlations,North Cascades,Washington 1984–2006
Glacier annual balance measurement forecasting climate correlations
2008/1/25
North Cascade glacier annual balance measured on 10 glaciers from 1984–2006 yielded mean annual balance (ba) of −0.54 m/a, and −12.38 m cumulatively. This is a significant loss for glacier...