Aerosol Optical Depth Measured at Different Coastal Boundary Layers and Its Links with Synoptic-Scale Features

Ponczkowska, Agnieszka; Zieliński, Tymon; Petelski, Tomasz; Markowicz, Krzysztof M.; Chourdakis, G.; Georgoussis, Giorgos

doi:10.3390/rs1030557

Cited by 6 publications

(4 citation statements)

References 30 publications

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“…Authors of work [8] showed that the spatial distribution of atmospheric transparency characteristics depends substantially on the formation and motion of synoptic objects, and this distribution within pressure systems is heavily deter mined by local factors [8][9][10][11]. Work [11] also studied the effect of atmospheric stratification and precipita tion on aerosol optical depth.…”

Section: Introductionmentioning

confidence: 98%

“…The effects of synoptic factors on aerosol turbidity were discussed, e.g., in works [8][9][10][11][12][13][14][15]. Authors of work [8] showed that the spatial distribution of atmospheric transparency characteristics depends substantially on the formation and motion of synoptic objects, and this distribution within pressure systems is heavily deter mined by local factors [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The differ ences in between air masses of one and the same type, but of either marine or continental origin, are not that much. The fact that the atmospheric AOD signifi cantly differs between different air mass types is con firmed by studies in other regions: on the territory of the United States [10] and in polar regions of Russia [8].…”

Section: Introductionmentioning

confidence: 99%

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The influence of synoptic factors on variations of atmospheric aerosol optical depth under Siberian conditions

et al. 2011

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Based on multiyear measurements of the atmospheric aerosol optical depth (AOD) in a typical region of Siberia (Tomsk), we analyzed the relationship between the AOD and different synoptic factors. The averaged spectral AOD dependencies for two air mass types (continental polar and Arctic air) and different pressure systems are compared. The effect of cloud cover and precipitation on the AOD is estimated. We dis cuss the results of wavelet analysis of the time series of the AOD and columnar water vapor for a number of observation sites (AERONET stations in Tomsk, Yekaterinburg, Irkutsk, Yakutsk, and Ussuriisk). The spe cific features of synoptic scale quasi periodic variations at different measurement sites are identified and compared.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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The influence of synoptic factors on variations of atmospheric aerosol optical depth under Siberian conditions

et al. 2011

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“…However, cloud cover is an important, but not the only factor which affects the amount of GSR reaching the Earth's surface. Moreover, many papers have analysed the relation between atmospheric transparency (and more specifically, atmospheric aerosols concentration which is measured by aerosol optical depth—AOD) and atmospheric circulation (Nilsson et al ., 2001; Uscka, 2003; Power et al ., 2006; Ponczkowska et al ., 2009; Gkikas et al ., 2012). In Europe, a German circulation type classification, called the Grosswetterlagen classification (Hess and Brezowsky, 1952), was most frequently used to describe the relation between GSR and atmospheric circulation.…”

Section: Introductionmentioning

confidence: 99%

Influence of air pressure patterns over Europe on solar radiation variability over Poland (1986–2015)

Kulesza

2020

Intl Journal of Climatology

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The key factor that affects the inflow of radiant energy to the Earth's surface is the circulation of the atmosphere (caused by uneven distribution of air pressure on the globe) and the related changes in the amount of aerosols and cloudiness. This paper identified the areas in the Euro-Atlantic region where the air pressure change had a significant impact on global solar radiation (GSR) changes over Poland, during the period 1986-2015. In general, growing GSR sums over Poland are to some extent related to the positive phase of the NAO (simultaneous pressure growth in the area of the Azores High and the pressure decrease in the area of the Icelandic Low). Correlation coefficient between the NAO index and GSR over Poland equals 0.18 (statistically significant at α = 0.05). In turn, in summer and autumn the pressure growth in southern Scandinavia results in a significant increase in the amount of GSR over Poland. Days with extremely large GSR sums (above the 95th percentile) are also prompted by the Azores High ridge which covers Central and Southern Europe, and by air mass inflow from the Atlantic.

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Characterizing polar atmospheres and their effect on Rayleigh‐scattering optical depth

et al. 2010

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[1] A large set of radiosoundings was analyzed to study the dependence of Rayleighscattering optical depth (ROD) on pressure and temperature features of the polar clear-sky atmosphere. This set consists of 1320 radiosoundings, launched throughout the year at six Arctic sites, and of 940 radiosoundings launched at five Antarctic sites. The vertical profiles of pressure, temperature, and relative humidity given by these radiosoundings were corrected for lag errors and dry biases and then completed up to 120 km altitude, using COSPAR International Reference Atmosphere (CIRA) monthly vertical profiles of pressure and temperature, water vapor mixing ratio data derived from various satellite observations, and standard CO 2 vertical profile relative to 2007, when the ground-level concentration was 380 ppmv. Calculations of the volume Rayleigh-scattering coefficient were made for all the radiosoundings to study its seasonal variations with height due to pressure and temperature changes occurring in the troposphere and stratosphere. It was found that the surface-level pressure and temperature conditions can account to a large extent for these seasonal effects. Therefore, average spectral evaluations of ROD were made at 88 selected wavelengths from 0.20 to 4.0 mm for all the radiosoundings, subdivided into eight latitude/altitude site classes, representing 70°N, 75°N, 80°N, 70°S, 75°S, 80°S, and 90°S latitudes, for which the average ground values of air pressure p a and air temperature T a were defined. The dependence of ROD on the daily ground-level values of air pressure p o and air temperature T o measured at each site can be accounted for by using an algorithm in which the pressure dependence is given with good approximation by ratio (p o /p a ), and the temperature linear dependence is expressed by the difference (T a À T o ) multiplied by a spectral slope coefficient k(l) which varies by site classification. This algorithm was estimated to provide values of ROD with accuracy within ±0.5% at the six sea-level Arctic sites, ±0.5% at the three Antarctic coastal sites, and ±0.7% at the two Antarctic Plateau sites (Dome C and South Pole). When used to analyze the Sun photometer measurements, the present evaluations of ROD are estimated to provide aerosol optical depth values at visible wavelengths with relative errors of 1%-2% at the Arctic sites, 1%-4% at the coastal Antarctic sites, and 3%-13% at the Antarctic Plateau sites, for background aerosol extinction conditions.

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Aerosol Optical Depth Measured at Different Coastal Boundary Layers and Its Links with Synoptic-Scale Features

Cited by 6 publications

References 30 publications

The influence of synoptic factors on variations of atmospheric aerosol optical depth under Siberian conditions

The influence of synoptic factors on variations of atmospheric aerosol optical depth under Siberian conditions

Influence of air pressure patterns over Europe on solar radiation variability over Poland (1986–2015)

Characterizing polar atmospheres and their effect on Rayleigh‐scattering optical depth

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