Study of the aerosol optical characteristics over the Romanian Black Sea Coast using AERONET data

Ștefan, Sabina; Voinea, Sanda; Iorga, Gabriela

doi:10.1016/j.apr.2020.04.007

Cited by 11 publications

(8 citation statements)

References 49 publications

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“…The maximum average value of AOD was reached in July and August and the minimum in December and January. This is in agreement with AERONET average values of AOD at stations from South East Europe [74], [75]. The Ångström exponent showed minimum values in April and May and maximum values in August.…”

Section: Discussionsupporting

confidence: 90%

“…A slightly smaller fraction of biomass burning aerosols was identified over Athens (5%). Stefan et al in a similar study of the aerosol optical characteristics over the Romanian Black Sea Coast using AERONET data [75] showed the predominant presence of a fine fraction of aerosols of anthropogenic origin (mixed, polluted, biomass). In a study examining the typology of long-range transported aerosols over Europe from 2008 to 2018, [74] reported that smoke, continental, continental polluted, dust, and marine aerosols were present in Southeast Europe, with smoke being the most prevalent (43%), followed by continental (28%), continental polluted (12%), marine aerosols (8%), and dust (4%).…”

Section: Discussionmentioning

confidence: 95%

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Variation of Aerosol Optical Properties and Trends over Cluj-Napoca, Romania, Based on 10 Years of AERONET Data and Satellite-Based Observations

Ştefănie¹,

Radovici²,

Mereuta³

et al. 2023

Preprint

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Aerosols play an important role in Earth’s climate system, thus long time ground based measurements of aerosol optical properties are useful in understanding this role. 10 years of quality-assured measurements between 2010 and 2020 are used to investigate the aerosol climatology in the Cluj-Napoca area, in North-Western Romania. In this study, we analyze the Aerosol Optical Depth (AOD), Single Scattering Albedo (SSA) and Ångström exponent obtained by CIMEL sun photometer, part of the Aerosol Robotic Network (AERONET) to extract the seasonality of aerosols in the region and investigate the aerosol climatology of the area. Higher aerosol loads are found during July and August. Ångström exponent has the lowest values in April and May and the highest in August. The classification of aerosols using AERONET data is performed to separate dust, biomass burning, polluted urban, marine and continental dominant aerosol mixtures. In addition, the study presents the validation efforts of the Multi-Angle Implementation of Atmospheric Correction (MAIAC) dataset against AERONET AOD over 10 years period.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 95%

Variation of Aerosol Optical Properties and Trends over Cluj-Napoca, Romania, Based on 10 Years of AERONET Data and Satellite-Based Observations

Ştefănie¹,

Radovici²,

Mereuta³

et al. 2023

Preprint

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show abstract

“…The maximum average value of AOD was reached in July and August and the minimum in December and January. This is in agreement with AERONET average values of AOD at stations from South East Europe [70,71]. The angstrom exponent showed minimum values in April and May and maximum values in August.…”

Section: Discussionsupporting

confidence: 90%

Variation of Aerosol Optical Properties over Cluj-Napoca, Romania, Based on 10 Years of AERONET Data and MODIS MAIAC AOD Product

et al. 2023

View full text Add to dashboard Cite

Aerosols play an important role in Earth’s climate system, and thus long-time ground- based measurements of aerosol optical properties are useful in understanding this role. Ten years of quality-assured measurements between 2010 and 2020 are used to investigate the aerosol climatology in the Cluj-Napoca area, in North-Western Romania. In this study, we analyze the aerosol optical depth (AOD), single scattering albedo (SSA) and angstrom exponent obtained by the CIMEL sun photometer, part of the aerosol robotic network (AERONET), to extract the seasonality of aerosols in the region and investigate the aerosol climatology of the area. Higher aerosol loads are found during July and August. The angstrom exponent has the lowest values in April and May, and the highest in August. The classification of aerosols using AERONET data is performed to separate dust, biomass burning, polluted urban, marine and continental-dominant aerosol mixtures. In addition, the study presents the validation efforts of the Multi-Angle Implementation of Atmospheric Correction (MAIAC) dataset against AERONET AOD over a 10-year period.

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“…Using ground-based AERONET measurements taken over 16 years and combined with satellite-based observations, our study explores the dominant aerosol types, long-term varying trends and the interactions with meteorological factors. The main contributions of our study can be summarized as follows: First, in addition to classifying the aerosol types based on AOD and AE values in previous studies [63][64][65][66], the aerosol-absorbing properties in Hong Kong were also categorized using AE, SSA and FMF. Moreover, the multi-seasonal AOD, AE and SSA distribution patterns in Hong Kong were discussed, which provides a basis for understanding the seasonal aerosol optical characteristics in subtropical urban areas such as Hong Kong.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Long-Term Aerosol Optical Properties Combining AERONET Sunphotometer and Satellite-Based Observations in Hong Kong

Nichol

Lee

et al. 2022

Remote Sensing

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This study analyzes seasonal characteristics and long-term variations in aerosol optical parameters in Hong Kong from 2006 to 2021 using AERONET data and satellite-based observations based on the extreme-point symmetric mode decomposition (ESMD) model. The dominant aerosol types in Hong Kong are mixed aerosols and urban/industrial aerosols with fine-mode sizes, and slightly absorbing or non-absorbing properties. Aerosol optical depth (AOD), Angstrom exponent (AE) and single scattering albedo (SSA) varied seasonally with a lower AOD but higher AE and SSA in summer, and elevated AOD but lower AE and SSA in spring and winter. The long-term variations show the year 2012 to be a turning point, with an upward trend in AOD and AE before 2012 and then downwards after 2012. However, for SSA, a rising trend was exhibited in both pre- and post-2012 periods, but with a larger gradient in the first period. The ESMD analysis shows shorter-term, non-linear fluctuations in aerosol optical parameters, with alternating increasing and declining trends. The examination of the relationships between AOD and meteorological factors based on the extreme gradient boosting (XGBoost) method shows that the effects of weather conditions on AOD are complex and non-monotonic. A lower relative humidity, higher wind speed in southwest directions and lower temperature are beneficial to the abatement of aerosol loads in Hong Kong. In conclusion, the findings of this study enhance the understanding of aerosol properties and the interactions between aerosol loading and meteorological factors.

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Study of the aerosol optical characteristics over the Romanian Black Sea Coast using AERONET data

Cited by 11 publications

References 49 publications

Variation of Aerosol Optical Properties and Trends over Cluj-Napoca, Romania, Based on 10 Years of AERONET Data and Satellite-Based Observations

Variation of Aerosol Optical Properties and Trends over Cluj-Napoca, Romania, Based on 10 Years of AERONET Data and Satellite-Based Observations

Variation of Aerosol Optical Properties over Cluj-Napoca, Romania, Based on 10 Years of AERONET Data and MODIS MAIAC AOD Product

Analysis of Long-Term Aerosol Optical Properties Combining AERONET Sunphotometer and Satellite-Based Observations in Hong Kong

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