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Technical Note: Using a high finesse optical resonator to provide a long light path for differential optical absorption spectroscopy: CE-DOAS
a high finesse optical resonator differential optical absorption spectroscopy CE-DOAS
2010/8/12
Cavity enhanced methods in absorption spectroscopy have seen a considerable increase in popularity during the past decade. Especially Cavity Enhanced Absorption Spectroscopy (CEAS) established itself ...
Toward real-time measurement of atmospheric mercury concentrations using cavity ring-down spectroscopy
real-time measurement atmospheric mercury concentrations cavity ring-down spectroscopy
2010/8/12
Cavity ring-down spectroscopy (CRDS) is a direct absorption technique that utilizes path lengths up to multiple kilometers in a compact absorption cell and has a significantly higher sensitivity than ...
Detection of pollution transport events southeast of Mexico City using ground-based visible spectroscopy measurements of nitrogen dioxide
pollution transport events Mexico City nitrogen dioxide
2009/7/23
This work presents ground based differential optical absorption spectroscopy (DOAS) measurements of nitrogen dioxide (NO2) during the MILAGRO field campaign in March 2006 at the Tenango del Aire resea...
Technical Note: Measurement of the tropical UTLS composition in presence of clouds using millimetre-wave heterodyne spectroscopy
tropical UTLS composition clouds millimetre-wave heterodyne spectroscopy
2009/3/13
The MARSCHALS (Millimetre-wave Airborne Receiver for Spectroscopic CHaracterisation of Atmospheric Limb-Sounding) project has the general objectives of demonstrating the measurement capabilities of a ...
Multi axis differential optical absorption spectroscopy（MAX-DOAS）
Multi axis differential optical absorption spectroscopy MAX-DOAS
2009/2/20
Multi Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) in the atmosphere is a novel measurement technique that represents a significant advance on the well-established zenith scattered sun...
Observation of unusual chlorine activation by ground-based infrared and microwave spectroscopy in the late Arctic winter 2000/01
unusual chlorine activation microwave spectroscopy late Arctic winter
2009/1/5
During the Arctic winter of 2000/01, ground-based FTIR and millimetre-wave measurements revealed significant amounts of ClO over Kiruna after the final warming in February 2001. In fact, column amoun...
Spatially resolved measurements of nitrogen dioxide in an urban environment using concurrent multi-axis differential optical absorption spectroscopy
nitrogen dioxide urban environment optical absorption spectroscopy
2008/12/19
A novel system using the technique of concurrent multi-axis differential optical absorption spectroscopy system has been developed and applied to the measurement of nitrogen dioxide in an urban enviro...
Optical properties of absorbing and non-absorbing aerosols retrieved by cavity ring down (CRD) spectroscopy
Optical property CRD spectroscopy
2008/12/4
Application of cavity ring down (CRD) spectrometry for measuring the optical properties of pure and mixed laboratory-generated aerosols is presented. The extinction coefficient (αext), extinction cros...
Near-UV photolysis cross sections of CH3OOH and HOCH2OOH determined via action spectroscopy
Near-UV photolysis CH3OOH HOCH2OOH
2008/12/1
Knowledge of molecular photolysis cross sections is important for determining atmospheric lifetimes and fates of many species. A method and laser apparatus for measurement of these cross sections in t...
Modelling constraints on the emission inventory and on vertical dispersion for CO and SO2 in the Mexico City Metropolitan Area using Solar FTIR and zenith sky UV spectroscopy
CO SO2 Mexico City Metropolitan Area Solar FTIR UV spectroscopy
2008/12/1
Emissions of air pollutants in and around urban areas lead to negative health impacts on the population. To estimate these impacts, it is important to know the sources and transport mechanisms of the ...
Satellite monitoring of different vegetation types by differential optical absorption spectroscopy (DOAS) in the red spectral range
Satellite monitoring vegetation types DOAS red spectral range
2008/11/27
A new method for the satellite remote sensing of different types of vegetation and ocean colour is presented. In contrast to existing algorithms relying on the strong change of the reflectivity in the...
Chemical Identification of Urban Air Particulates in the Environment of Pune City (India) By Raman Spectroscopy
Vinayak Marutirao Harpale Sachin Dattatraya Ralegankar Dattatraya Bhikaji Jadhav Sanjay Daga Dhole
2016/3/30
The Raman spectra of urban aerosols were obtained for the characterization of aerosols and a
qualitative interpretation of the spectra is presented. An experiment was carried out using a
double mono...