Differential Absorption Lidar (DIAL)
Development of a laser for differential absorption lidar measurement of atmospheric carbon dioxide
... In the quest for a better understanding of climate change, greater importance is attached to monitoring the levels of atmospheric carbon dioxide to gain an improved knowledge of sources and sinks. Remote sensing is a ...
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A mobile differential absorption lidar to measure sub-hourly fluctuation of tropospheric ozone profiles in the Baltimore–Washington, D.C. region
... OZone DIfferential Absorption Lidar (GSFC TROPOZ DIAL) in Greenbelt, MD ...Ozone Lidar Network (TOLNet) has been developed, which currently consists of five stations across the ...ozone ...
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Intercomparison of atmospheric water vapor soundings from the differential absorption lidar (DIAL) and the solar FTIR system on Mt. Zugspitze
... Abstract. We present an intercomparison of three years of measurements of integrated water vapor (IWV) per- formed by the mid-infrared solar FTIR (Fourier Trans- form Infra-Red) instrument on the summit of Mt. Zugspitze ...
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Field-deployable diode-laser-based differential absorption lidar (DIAL) for profiling water vapor
... Abstract. A field-deployable water vapor profiling instru- ment that builds on the foundation of the preceding gen- erations of diode-laser-based differential absorption lidar (DIAL) laboratory ...
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3-D water vapor field in the atmospheric boundary layer observed with scanning differential absorption lidar
... Raman lidar (WVRL) during daytime (Wulfmeyer and Bösenberg, ...low absorption of ...the absorption cross section at the wavelengths used (Browell et ...
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Estimation of background gas concentration from differential absorption lidar measurements
... The lidar technique is based on transmitting a pulse of laser radiation into the atmosphere and measuring the light scattered by the atmosphere and returned to the ...basic lidar technique by operating the ...
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Validation of double-pulse 1572 nm integrated path differential absorption lidar measurement of carbon dioxide
... and some experiment results are presented. The optimized on-line and off-line wavelengths are 6361.2250 cm -1 and 6360.979 cm -1 respectively, which are shown in Figure 1. The lidar are compared with TDLAS and ...
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Ground-based integrated path coherent differential absorption lidar measurement of CO 2: foothill target return
... IPDA lidar due to Nc is limited if the Nc is ...IPDA lidar with the laser at a pulse repetition frequency of a few tens of KHz is necessary in order to reach the goal of 1–2 ppm relative error with a ...
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Differential absorption radar techniques: surface pressure
... instead, a region with stronger signal and minimal interfer- ence from other species. Promptly, several authors (Singer, 1968; Smith et al., 1972; Barton and Le Marshall, 1979; Korb and Weng, 1982) proposed to use the ...
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CH4 IPDA Lidar mission data simulator and processor for MERLIN: prototype development at LMD/CNRS/Ecole Polytechnique
... (Differential Absorption LIDAR) measurements using a pulsed laser emitting at two wavelengths, one wavelength accurately locked on a spectral feature of the methane absorption line, and the ...
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Near/Mid IR Differential Absorption OPO Lidar System for Gas Analysis of the Atmosphere
... OPO lidar system based on KTA and KTP crystals for gas analysis of the ...atmosphere. Lidar measurements of atmospheric gases in the near/mid infrared region have been numerically ...The differential ...
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Sensitivity studies for a space-based methane lidar mission
... space-based lidar measurements is influ- enced by a set of instrument, platform and geophysical (earth surface and atmosphere) ...airborne differential absorption lidar for profiling wa- ter ...
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An algorithm to retrieve ice water content profiles in cirrus clouds from the synergy of ground-based lidar and thermal infrared radiometer measurements
... To overcome the backscatter-to-extinction ambiguity, we showed in a second step that it is possible to use TIR radi- ances to constrain the backscatter-to-extinction ratio defined as the product of the single-scattering ...
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LiDAR-derived high quality ground control information and DEM for image orthorectification
... of LiDAR data. This leads to a great potential to use LiDAR data to get high quality GCPs and DEMs to improve the accuracy of ...utilizing LiDAR intensity images to collect high accuracy ground ...
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A review of turbulence measurements using ground-based wind lidars
... The lidar was oriented in the mean wind di- rection and the measurements were performed at 10 m above the ground, where the probe volume length (also called the full width half maximum (FWHM) = 2l) of the ...
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Developing a portable, autonomous aerosol backscatter lidar for network or remote operations
... In order to operate a class IV laser outdoors, it is neces- sary to obtain airspace approval from the governing author- ities, in this case Transport Canada. Two important criteria in providing a safe operational plan ...
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Ultrafast Carrier Relaxation in InN Nanowires Grown by Reactive Vapor Transport
... ferential absorption measurements as a function of incident fluence on the ...transient differential absorption measurements for the long probing wavelength 980 nm provide a direct measure of the ...
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SIMULTANEOUS ESTIMATION OF MEFENAMIC ACID AND DICYCLOMINE HYDROCHLORIDE BY SPECTROSCOPIC METHODS
... and 1-6 μg/mL for DICY. Absorbance of each solution measured at 308.60nm for MEF, 223nm for DICY in Absorption Correction Method. The absorbance of the derivatised spectra was measured at 308.80 nm and 211.60 nm ...
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On the measurement of molecular anisotropies using laser techniques. III. Detection of the higher multipoles
... Part II develops an alternative method, namely circular and linear differential absorption and we showed that unambiguous determination of ground state multipole moment[r] ...
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Broadband cavity-enhanced absorption spectroscopy in the ultraviolet spectral region for measurements of nitrogen dioxide and formaldehyde
... laser absorption spec- troscopy (Fried et ...eration absorption spectroscopy (Weibring et ...use differential optical absorption spectroscopy ...
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