Saver.net lidar network in southern South America

Ristori, P.; Otero, Lidia Ana; Jin, Yoshitaka; Barja, Boris; Shimizu, Atsushi; Barbero, Albane; Salvador, Jacobo; Bali, Juan Lucas; Herrera, María Inés; Etala, Paula; Acquesta, Alejandro; Quel, E. J.; Sugimoto, Naoki; Mizuno, Akira

doi:10.1051/epjconf/201817609011

Cited by 10 publications

(11 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These results are consistent with previous studies indicating that the volcanic plume is dominated by larger particles near the source (Hobbs et al, 1982;Rose et al, 2000;Watson and Oppenheimer, 2000;Webster et al, 2012). Rose et al (1982) showed that this phenomenon could be explained by competing mechanisms involving the adsorption of smaller particles by ash. As reported by Sparks et al (1997), aggregation processes are more important near the source.…”

Section: Gobabebsupporting

confidence: 93%

Statistical analysis of the long-range transport of the 2015 Calbuco volcanic plume from ground-based and space-borne observations

et al. 2020

View full text Add to dashboard Cite

Abstract. This study investigates the influence of the 2015 Calbuco eruption (41.2∘ S, 72.4∘ W; Chile) on the total columnar aerosol optical properties over the Southern Hemisphere. The well-known technic of sun photometry was applied for the investigation of the transport and spatio-temporal evolution of the optical properties of the volcanic plume. The CIMEL sun photometer measurements performed at six South American and three African sites were statistically analysed. This study involves the use of the satellite observations and a back-trajectory model. The passage of the Calbuco plume is statistically detectable in the aerosol optical depth (AOD) observations obtained from sun photometer and MODIS observations. This statistical detection confirms that the majority of the plume was transported over the northeastern parts of South America and reached the South African region 1 week after the eruption. The plume impacted the southern parts of South America to a lesser extent. The highest AOD anomalies were observed over the northeastern parts of South America. Over the South African sites, the AOD anomalies induced by the spread of the plume were quite homogeneously distributed between the east and west coasts. The optical characteristics of the plume near the source region were consistent with an ash-bearing plume. Conversely, sites further from the Calbuco volcano were influenced by ash-free plume. The optical properties discussed in this paper will be used as inputs for numerical models for further investigation of the ageing of the Calbuco plume in a forthcoming study.

show abstract

Section: Gobabebsupporting

confidence: 93%

Statistical analysis of the long-range transport of the 2015 Calbuco volcanic plume from ground-based and space-borne observations

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The CALIPSO CALIOP 5 km aerosol profile product version 4.1 is available under https://doi.org/10.5067/CALIOP/CALIPSO/LID_L2_05kmAPro-Standard- V4-10 (Vaughan et al, 2016). Backward trajectories' analysis was supported by air mass transport computation with the NOAA (National Oceanic and Atmospheric Administration) HYSPLIT model (HYSPLIT, 2018) using GDAS meteorological data (Stein et al, 2015;Rolph et al, 2017). AERONET Sun photometer AOT data were downloaded from the AERONET web page (http://aeronet.gsfc.nasa.gov/, last access: 8 May 2019).…”

mentioning

confidence: 99%

Vertical aerosol distribution in the southern hemispheric midlatitudes as observed with lidar in Punta Arenas, Chile (53.2° S and 70.9° W), during ALPACA

et al. 2019

Self Cite

View full text Add to dashboard Cite

Abstract. Within this publication, lidar observations of the vertical aerosol distribution above Punta Arenas, Chile (53.2∘ S and 70.9∘ W), which have been performed with the Raman lidar PollyXT from December 2009 to April 2010, are presented. Pristine marine aerosol conditions related to the prevailing westerly circulation dominated the measurements. Lofted aerosol layers could only be observed eight times during the whole measurement period. Two case studies are presented showing long-range transport of smoke from biomass burning in Australia and regionally transported dust from the Patagonian Desert, respectively. The aerosol sources are identified by trajectory analyses with the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) and FLEXible PARTicle dispersion model (FLEXPART). However, seven of the eight analysed cases with lofted layers show an aerosol optical thickness of less than 0.05. From the lidar observations, a mean planetary boundary layer (PBL) top height of 1150 ± 350 m was determined. An analysis of particle backscatter coefficients confirms that the majority of the aerosol is attributed to the PBL, while the free troposphere is characterized by a very low background aerosol concentration. The ground-based lidar observations at 532 and 1064 nm are supplemented by the Aerosol Robotic Network (AERONET) Sun photometers and the space-borne Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) aboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO). The averaged aerosol optical thickness (AOT) determined by CALIOP was 0.02 ± 0.01 in Punta Arenas from 2009 to 2010.

show abstract

“…Measurements from the lidar instrument installed at CITEDEF were analyzed to determine the height of the aerosol layers. The normalized aerosol backscattering coefficient was calculated at 532 nm [47][48][49]. This system allows measuring the atmosphere's profiles from a few meters to several kilometers, exceeding the tropopause height up to the lower stratosphere.…”

Section: Detection Of Biomass Burning Eventsmentioning

confidence: 99%

Lidar Observations in South America. Part II - Troposphere

Landulfo¹,

Cacheffo²,

Yoshida³

et al. 2021

Remote Sensing

Self Cite

View full text Add to dashboard Cite

In Part II of this chapter, we intend to show the significant advances and results concerning aerosols’ tropospheric monitoring in South America. The tropospheric lidar monitoring is also supported by the Latin American Lidar Network (LALINET). It is concerned about aerosols originating from urban pollution, biomass burning, desert dust, sea spray, and other primary sources. Cloud studies and their impact on radiative transfer using tropospheric lidar measurements are also presented.

show abstract

Saver.net lidar network in southern South America

Cited by 10 publications

References 8 publications

Statistical analysis of the long-range transport of the 2015 Calbuco volcanic plume from ground-based and space-borne observations

Statistical analysis of the long-range transport of the 2015 Calbuco volcanic plume from ground-based and space-borne observations

Vertical aerosol distribution in the southern hemispheric midlatitudes as observed with lidar in Punta Arenas, Chile (53.2° S and 70.9° W), during ALPACA

Lidar Observations in South America. Part II - Troposphere

Contact Info

Product

Resources

About