Intercomparison of ozone profiles measurements by a differential absorption lidar system and satellite instruments at Buenos Aires, Argentina

Pazmiño, Andréa; Godin, S.; Wolfram, Elián; Lavorato, Mario; Porteneuve, Jacques; Quel, E. J.; Mégie, G.

doi:10.1016/s0143-8166(02)00060-x

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…The (Wolfram, 2006;Salvador, 2011). The ozone profile retrieval algorithms were provided by the Observatory of Haute-Provence (OHP) (Godin, 1987;Godin-Beekmann et al, 2003;Pazmiño, 2003), which were adapted for the DIAL system installed in the OAPA, Río Gallegos (51.6° S; 69.3 ° W) by mid-2005. Since the installation, instrumental and algorithm improvements have been carried out (Salvador, 2011).…”

Section: Dial (Differential Absorption Lidar)mentioning

confidence: 99%

Analysis of an event of short term ozone variation using a Millimiter-Wave Radiometer installed in subpolar region

Orte

Wolfram

Salvador

et al. 2019

Preprint

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Abstract. Subpolar regions in the southern hemisphere are influenced by the Antarctic polar vortex during austral spring, which induces high and short term ozone variability at different altitudes mainly into the stratosphere. This variation may affect considerably the total ozone column changing the harmful UV radiation that reaches the surface. With the aim to study ozone with high time resolution at different altitudes in subpolar regions, a Millimeter Wave Radiometer (MWR) was installed at the Observatorio Atmosférico de la Patagonia Austral (OAPA), Río Gallegos, Argentina, (51.6° S; 69.3° W) by 2011. This instrument provides ozone profiles with time resolution of ~ 1 hour which enables studies of short term ozone mixing ratio variability from 25 to 70 km in altitude. This work presents the MWR ozone observations between October 2014 and 2015 focusing on an atypical event of polar vortex and ozone hole influence over Río Gallegos detected from the MWR measurements at 27 and 37 km during November of 2014. The advected potential vorticity (APV) calculated from the high-resolution advection model MIMOSA (Modélisation Isentrope du transport Méso-échelle de l'Ozone Stratosphérique par Advection) was also analysed at 675 and 950 K to understand and explain the dynamic at both altitudes and correlate the ozone rapid variation during the event with the passage of the polar vortex. In addition, the MWR dataset were compared for first time with measurements obtained from Microwave Limb Sounder (MLS) at individual altitude levels (27 km, 37 km and 65 km) and with the Differential Absorption Lidar (DIAL) installed in OAPA to analyse the correspondence between the MWR and independent instruments. The MWR-MLS comparison presents reasonable correlation with a mean bias error of +5 %, −11 % and −7 % at 27 km, 37 km and 65 km, respectively. The MWR-DIAL comparison at 27 km presents also good agreement with a mean bias error of −1 %.

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Section: Dial (Differential Absorption Lidar)mentioning

confidence: 99%

Analysis of an event of short term ozone variation using a Millimiter-Wave Radiometer installed in subpolar region

Orte

Wolfram

Salvador

et al. 2019

Preprint

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“…The backscattering radiation is collected by a telescope, the emitted wavelengths are detected by photomultipliers and finally the signals are acquired by a counter-board. More details of the system are given in the work of Pazmiño et al (2003).…”

Section: Ozone Profile Measurementsmentioning

confidence: 99%

“…This UV index is a measure of the solar risk for humans exposed to solar radiation (Roy and Gies, 1998). At the Institute of Physics and the Astronomical Observatory of Rosario, Argentina, in collaboration with the Institute of Medical Physics of the University of Innsbruck, Austria and the Argentina National Weather Service, a computational program based on model calculations and expected cloud coverage was developed for predicting this index for all Argentina, through the National Weather Service daily forecast system (Piacentini et al, 2000a).…”

Section: Introductionmentioning

confidence: 99%

Satellite and ground measurements of solar erythemal UV radiation and ozone in Argentina

Piacentini

Luccini

Micheletti

et al. 2004

Advances in Space Research

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“…For those reasons ozone has been at the centre of middle atmosphere research effort [3]. The Lidar division of CEILAP has been made different contribution related to monitoring of stratospheric ozone in Argentina since 1999, when the first Differential Absorption Lidar (DIAL) of Latin America [4] was developed. Today we increase this research line with the construction of new version of DIAL instrument which has better performance that the older one.…”

Section: Introductionmentioning

confidence: 99%

New Differential Absorption Lidar for Stratospheric Ozone Monitoring in Argentina

Wolfram¹,

Salvador²,

D'elia³

et al. 2008

AIP Conference Proceedings

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As part of environmental studies concerning with measurements of the stratospheric ozone layer, the CEILAP developed a new Differential Absorption Lidar (DIAL) instrument. Since the early construction of the first DIAL instrument, Lidar Division has been made important financial and scientific investments to improve this initial prototype. The new version has a bigger reception system formed by 4 newtonian telescopes of 50 cm diameter each one and a higher number of detection channels: four different wavelengths are detected simultaneously and six digital channels record the Rayleigh and Raman backscattered photons emitted by an ClXe Excimer laser at 308 nm and third harmonic of Nd-YAG laser at 355 nm. A number of different changes have been made to increase the dynamical range of this lidar: a mechanical chopper was installed together with gated photomultiplier in the high energy detection channels to avoid strong signals from lower atmospheric layers. This new version was installed inside a shelter given the possibility to make field campaigns outside CEILAP laboratories as SOLAR Campaign made in Argentine Patagonian region during 2005-2006 springs. In this paper a full description of instrument update is given. Intercomparisons with ozonesonde and satellite platform instrument are presented. The results show agreement better than 10% in 16-38 km range when same airmasses are sampled.

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Intercomparison of ozone profiles measurements by a differential absorption lidar system and satellite instruments at Buenos Aires, Argentina

Cited by 9 publications

References 4 publications

Analysis of an event of short term ozone variation using a Millimiter-Wave Radiometer installed in subpolar region

Analysis of an event of short term ozone variation using a Millimiter-Wave Radiometer installed in subpolar region

Satellite and ground measurements of solar erythemal UV radiation and ozone in Argentina

New Differential Absorption Lidar for Stratospheric Ozone Monitoring in Argentina

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