2023 |
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1. | Elena Bazo; María J. Granados-Muñoz; Roberto Román; Juan Antonio Bravo-Aranda; Alberto Cazorla; Antonio Valenzuela; Ramiro González; Francisco José Olmo; Lucas Alados-Arboledas In: Atmospheric Research, vol. 282, pp. 106517, 2023, ISSN: 0169-8095. Abstract | Links | BibTeX | Tags: aerosol radiative properties, ceilometer, GAME, GRASP, Longwave radiative effect, Sun-sky photometer @article{Bazo2023, The aerosol radiative effect (ARE) is one of the atmospheric components still affected by large uncertainty. One of the causes is related to the fact that the longwave (LW) component is usually neglected, even though it is necessary for an accurate quantification of the ARE together with the shortwave component (SW). In this study we have developed a methodology based on the GAME (Global Atmospheric Model) radiative transfer model (RTM) that allows to obtain the radiative effect of the atmospheric aerosol for both spectral ranges in an automated way. The microphysical and optical properties necessary to feed the RTM have been obtained through the GRASP (Generalized Retrieval of Aerosol and Surface Properties) algorithm, with the combination of ceilometer and sun-sky photometer data. Data measured in Granada (Spain) during 2017 have been used for the evaluation and implementation of this methodology. According to the results, the ARE in the SW spectral range (ARESW) varies between 0 and ? 50 Wm?2 for most of the data, whereas the ARE in the LW range (ARELW) varies between 0 and 5 Wm?2, at heights near the surface. In general, the obtained results agree with those found in the literature, with negative values in the SW range (cooling effect) and positive values in the LW (heating effect). The seasonal analysis shows that, for both components, the ARE is more important during the spring and summer seasons, when the aerosol load is greater, as expected. The analysis of the aerosol heating rate (AHR) shows positive values in the SW and negative values in the LW range. The majority of the AHRSW data varies between 0 and 1 Kd?1 during the year whereas the AHRLW does it between 0 and ? 0.15 Kd?1. The seasonal analysis of the AHR shows that the greater monthly average values are found during spring, however there is not much variability along the year, with the exception of February, under the effects of an extreme dust intrusion. The mineral dust particles in this event cause an ARESW of ?130 Wm?2 and an ARELW of 23 Wm?2 (ARELW/ARESW = 17%), thus pointing out that the LW component should not be neglected for coarse mode particles. Additionally, it is observed that the vertical distribution of the aerosol layers strongly influences the ARE and the AHR obtained profiles, affecting the way the atmospheric cooling/heating occurs in the vertical coordinate. |
2022 |
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2. | R.D. García; O.E. García; E. Cuevas-Agulló; A. Barreto; V.E. Cachorro; C. Marrero; F. Almansa; R. Ramos; M. Pó Spectral Aerosol Radiative Forcing and Efficiency of the La Palma Volcanic Plume over the Izaña Observatory Journal Article In: Remote Sensing, vol. 15(1), no. 17, 2022, ISSN: 2072-4292. Abstract | Links | BibTeX | Tags: Aerosol Properties, aerosol radiative properties @article{García2022b, On 19 September 2021, a volcanic eruption began on the island of La Palma (Canary Islands, Spain). The eruption has allowed the assessment of an unprecedented multidisciplinary study on the effects of the volcanic plume. This work presents the estimation of the spectral direct radiative forcing (ΔF) and efficiency (ΔFEff) from solar radiation measurements at the Izaña Observatory (IZO) located on the island of Tenerife (∼140 km from the volcano). During the eruption, the IZO was affected by different types of aerosols: volcanic, Saharan mineral dust, and a mixture of volcanic and dust aerosols. Three case studies were identified using ground-based (lidar) data, satellite-based (Sentinel-5P Tropospheric Monitoring Instrument, TROPOMI) data, reanalysis data (Modern-Era Retrospective Analysis for Research and Applications, version 2, MERRA-2), and backward trajectories (Flexible Trajectories, FLEXTRA), and subsequently characterised in terms of optical and micro-physical properties using ground-based sun-photometry measurements. Despite the ΔF of the volcanic aerosols being greater than that of the dust events (associated with the larger aerosol load present), the ΔFEff was found to be lower. The spectral ΔFEff values at 440 nm ranged between −1.9 and −2.6 Wm−2nm−1AOD−1 for the mineral dust and mixed volcanic and dust particles, and between −1.6 and −3.3 Wm−2nm−1AOD−1 for the volcanic aerosols, considering solar zenith angles between 30∘ and 70∘, respectively. |
3. | M. J. Granados-Muñoz; J. L. Guerrero-Rascado; J. A. Bravo-Aranda; P. Cariñanos; J. Abril-Gago; D. Bermejo-Pantaleon; Alberto Cazorla; Roberto Roman; Ramiro González; Lucas Alados-Arboledas Analysis of optical, microphysical and radiative properties of extreme pollen events observed by remote sensors in Southeastern Spain Conference 11th International Aerosol Conference (IAC2022) Athens, Greece, 2022. BibTeX | Tags: aerosol pollen event, aerosol radiative properties, microphysical properties, optical properties @conference{Granados-Muñoz2022, |
2021 |
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4. | E. Bazo; M.J. Granados-Muñoz; J.A. Bravo-Aranda; R. Román Statistical analysis of the atmospheric aerosol radiative properties over a year in Granada Conference European Lidar Conference 2021 (ELC2021) Granada, Spain, 2021. BibTeX | Tags: aerosol radiative properties @conference{Bazo2021, |
Search an Article
2023 |
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1. | In: Atmospheric Research, vol. 282, pp. 106517, 2023, ISSN: 0169-8095. |
2022 |
|
2. | Spectral Aerosol Radiative Forcing and Efficiency of the La Palma Volcanic Plume over the Izaña Observatory Journal Article In: Remote Sensing, vol. 15(1), no. 17, 2022, ISSN: 2072-4292. |
3. | Analysis of optical, microphysical and radiative properties of extreme pollen events observed by remote sensors in Southeastern Spain Conference 11th International Aerosol Conference (IAC2022) Athens, Greece, 2022. |
2021 |
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4. | Statistical analysis of the atmospheric aerosol radiative properties over a year in Granada Conference European Lidar Conference 2021 (ELC2021) Granada, Spain, 2021. |