搜索结果: 1-15 共查到“大气科学 techniques”相关记录16条 . 查询时间(0.078 秒)
Quantitative Techniques for Measuring Cleanroom Wipers with Respect to Airborne Molecular Contamination
Cleanroom Wiper Airborne molecular contamination Particle Ion Nonvolatile residue
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2016/3/28
Cleanroom wipers are generally of three classifications, namely, synthetic, natural fibers and blends of fibers. Ultra-fine
split type fiber is mostly selected as the wiper material since cleanrooms ...
The sensitivity of secondary organic aerosol component partitioning to the predictions of component properties – Part 1: A systematic evaluation of some available estimation techniques
secondary organic aerosol component component properties estimation techniques
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2010/11/29
A large number of calculations of the absorptive partitioning of organic compounds have been made using a number of methods to predict the component vapour pressures, p0, and activity coefficients, γi...
Improving QPF by blending techniques at the Meteorological Service of Catalonia
Improving QPF blending techniques Meteorological Service Catalonia
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2010/10/21
The current operational very short-term and short-term quantitative precipitation forecast (QPF) at the Meteorological Service of Catalonia (SMC) is made by three different methodologies: Advection of...
On retrieval of lidar extinction profiles using Two-Stream and Raman techniques
lidar extinction profiles Two-Stream Raman techniques
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2010/8/12
The Two-Stream technique employs simultaneous measurements performed by two elastic backscatter lidars pointing at each other to sample into the same atmosphere. It allows for a direct retrieval of th...
Railway Construction Techniques Adapting to Climate Warming in Permafrost Regions
Qinghai-Tibet Railway climate warming railway construction
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2009/8/28
The climate warming, which has an evident effect on the warm/ice-rich permafrost, should be considered in the engineering design of the Qinghai-Tibet Railway in permafrost areas. Based on the rule men...
Inter-comparison of four different carbon monoxide measurement techniques and evaluation of the long-term carbon monoxide time series of Jungfraujoch
carbon monoxide measurement techniques long-term carbon monoxide time series Jungfraujoch
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2009/6/16
Despite the importance of carbon monoxide (CO) for the overall oxidative capacity of the atmosphere, there is still considerable uncertainty in ambient measurements of CO. To address this issue, an in...
Intercomparison of ammonia measurement techniques at an intensively managed grassland site（Oensingen, Switzerland）
ammonia measurement techniques managed grassland site Switzerland
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2009/5/6
As part of a field campaign in the framework of the NitroEurope project, three different instruments for atmospheric ammonia (NH3) measurements were operated side-by-side on a managed grassland site i...
Ground-based intercomparison of two isoprene measurement techniques
Ground-based intercomparison isoprene measurement technique
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2009/3/10
An informal intercomparison of two isoprene (C5H8) measurement techniques was carried out during Fall of 1998 at a field site located approximately 3 km west of Boulder, Colorado, USA. A new chemical ...
Inverse modeling of CO2 sources and sinks using satellite data: a synthetic inter-comparison of measurement techniques and their performance as a function of space and time
CO2 sources synthetic inter-comparison function of space and time
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2009/2/24
Currently two polar orbiting satellite instruments measure CO2 concentrations in the Earth's atmosphere, while other missions are planned for the coming years. In the future such instruments might be...
A look at aerosol formation using data mining techniques
aerosol formation data mining techniques
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2009/2/19
Atmospheric aerosol particle formation is frequently observed throughout the atmosphere, but despite various attempts of explanation, the processes behind it remain unclear. In this study data mining ...
Intercomparison of four different in-situ techniques for ambient formaldehyde measurements in urban air
four different in-situ techniques ambient formaldehyde measurements urban air
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2009/1/14
Results from an intercomparison of several currently used in-situ techniques for the measurement of atmospheric formaldehyde (CH2O) are presented. The measurements were carried out at Bresso, an urban...
Ambient formaldehyde measurements made at a remote marine boundary layer site during the NAMBLEX campaign – a comparison of data from chromatographic and modified Hantzsch techniques
Ambient formaldehyde measurements remote marine boundary layer NAMBLEX campaign chromatographic and modified Hantzsch techniques
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2009/1/12
Ambient formaldehyde concentrations are reported from the North Atlantic Marine Boundary Layer Experiment (NAMBLEX) campaign at Mace Head on the west coast of Eire during August 2002. The results from...
SO2 emissions from Popocatépetl volcano: emission rates and plume imaging using optical remote sensing techniques
SO2 Popocatépetl volcano plume imaging
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2008/11/26
Sulfur dioxide emissions from the Popocatépetl volcano in central Mexico were measured during the MILAGRO field campaign in March 2006. A stationary scanning DOAS (Differential Optical Absorption Spec...
Comparison of ground-based Brewer and FTIR total column O3 monitoring techniques
ground-based Brewer FTIR O3
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2008/11/20
We compare the currently most precise, ground-based total O3 measurement techniques: Brewer and FTIR. We give an overview of the similarities and the differences between the measurements and the retri...
Photolysis frequency measurement techniques: results of a comparison within the ACCENT project
Photolysis frequency measurement ACCENT project
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2008/11/19
An intercomparison of different radiometric techniques measuring atmospheric photolysis frequencies j(NO2), j(HCHO) and j(O1D) was carried out in a two-week field campaign in June 2005 at Jülich, Germ...