Study of vertical structure of aerosol optical properties with sun photometers and ceilometer during the MACRON campaign in 2007

Markowicz, Krzysztof M.; Zieliński, Tymon; Blindheim, S.; Gausa, Michael; Jagodnicka, A. K.; Kardas, A. E.; Kumala, Wojciech; Malinowski, Szymon P.; Petelski, Tomasz; Posyniak, M.; Stacewicz, T.

doi:10.2478/s11600-011-0056-7

Cited by 12 publications

(6 citation statements)

References 41 publications

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“…Measurements made with an ensemble of various instruments reveled that this aerosol episode was one of the worst cases in last decade [45,46,[51][52][53][54]. Daily averages of level 2.0 aerosol optical This result is very important when considering that the same type of aerosols can produce different climatic effects (warming or cooling) and local feedbacks (snow/ice albedo, clouds) depending on its vertical location [95][96][97][98][99][100][101].…”

Section: Discussionmentioning

confidence: 99%

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Study of Chemical and Optical Properties of Biomass Burning Aerosols during Long-Range Transport Events toward the Arctic in Summer 2017

et al. 2020

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Biomass burning related aerosol episodes are becoming a serious threat to the radiative balance of the Arctic region. Since early July 2017 intense wildfires were recorded between August and September in Canada and Greenland, covering an area up to 4674 km2 in size. This paper describes the impact of these biomass burning (BB) events measured over Svalbard, using an ensemble of ground-based, columnar, and vertically-resolved techniques. BB influenced the aerosol chemistry via nitrates and oxalates, which exhibited an increase in their concentrations in all of size fractions, indicating the BB origin of particles. The absorption coefficient data (530 nm) at ground reached values up to 0.6 Mm–1, highlighting the impact of these BB events when compared to average Arctic background values, which do not exceed 0.05 Mm–1. The absorption behavior is fundamental as implies a subsequent atmospheric heating. At the same time, the AERONET Aerosol Optical Depth (AOD) data showed high values at stations located close to or in Canada (AOD over 2.0). Similarly, increased values of AODs were then observed in Svalbard, e.g., in Hornsund (daily average AODs exceeded 0.14 and reached hourly values up to 0.5). Elevated values of AODs were then registered in Sodankylä and Andenes (daily average AODs exceeding 0.150) a few days after the Svalbard observation of the event highlighting the BB columnar magnitude, which is crucial for the radiative impact. All the reported data suggest to rank the summer 2017 plume of aerosols as one of the biggest atmosphere related environmental problems over Svalbard region in last 10 years.

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Section: Discussionmentioning

confidence: 99%

“…According to several reports from experimental measurements and models, the year 2017 was particularly important for atmospheric pollution events in the Arctic, with BB particles reaching different altitudes in the atmosphere, up to 20 km a.s.l. [51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Study of Chemical and Optical Properties of Biomass Burning Aerosols during Long-Range Transport Events toward the Arctic in Summer 2017

et al. 2020

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“…In principle, JenOptik's CHM15k, similarly to other ceilometers (e.g., Vaisala CT25K), is designed to detect cloud base height (Martucci et al 2010) with the use of lidar technology (O'Connor et al 2004), providing reliable information on clouds up to 15 km. However, significantly higher signal-tonoise ratio than for other ceilometers allows to apply CHM15K to determine the mixing height (Eresmaa et al 2006, Münkel et al 2004, Stachlewska et al 2012 and to examine aerosol profiles up to middle troposphere (Sundström et al 2009, Markowicz et al 2012, McKendry et al 2009.…”

Section: Ceilometer and Lidarmentioning

confidence: 99%

Modelling and Observation of Mineral Dust Optical Properties over Central Europe

et al. 2016

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This paper is focused on Saharan dust transport to Central Europe/ Poland; we compare properties of atmospheric Saharan dust using data from NAAPS, MACC, AERONET as well as observations obtained during HyMountEcos campaign in June 2012. Ten years of dust climatology shows that long-range transport of Saharan dust to Central Europe is mostly during spring and summer. HYSPLIT back-trajectories indicate airmass transport mainly in November, but it does not agree with modeled maxima of dust optical depth. NAAPS model shows maximum of dust optical depth (~0.04-0.05, 550 nm) in April-May, but the MACC modeled peak is broader (~0.04). During occurrence of mineral dust over Central-Europe for 14% (NAAPS) / 12% (MACC) of days dust optical depths are above 0.05 and during 4% (NAAPS) / 2.5% (MACC) of days in June-July 2012 in the mountainous region of Karkonosze. The analysis includes remote sensing data from lidars, sunphotometers, and numerical simulations from NAAPS, MACC, DREAM8b models. Comparison of simulations with observations demonstrates the ability of models to reasonably reproduce aerosol vertical distributions and their temporal variability. However, significant differences between simulated and measured AODs were found. The best agreement was achieved for MACC model.

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“…DCVI can be used for most low altitude measurements (below 150 meters). For the purpose of calculating the atmospheric correction during campaigns, it would be advisable to hand-hold a sun-photometer, which can instantly and precisely measure the AOD at selected wavelengths (Markowicz et al 2012). …”

Section: Discussionmentioning

confidence: 99%

Error simulations of uncorrected NDVI and DCVI during remote sensing measurements from UAS

Chiliński

Ostrowski

2014

Miscellanea Geographica

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Remote sensing from unmanned aerial systems (UAS) has been gaining popularity in the last few years. In the field of vegetation mapping, digital cameras converted to calculate vegetation index (DCVI) are one of the most popular sensors. This paper presents simulations using a radiative transfer model (libRadtran) of DCVI and NDVI results in an environment of possible UAS flight scenarios. The analysis of the results is focused on the comparison of atmosphere influence on both indices. The results revealed uncertainties in uncorrected DCVI measurements up to 25% at the altitude of 5 km, 5% at 1 km and around 1% at 0.15 km, which suggests that DCVI can be widely used on small UAS operating below 0.2 km.

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Study of vertical structure of aerosol optical properties with sun photometers and ceilometer during the MACRON campaign in 2007

Cited by 12 publications

References 41 publications

Study of Chemical and Optical Properties of Biomass Burning Aerosols during Long-Range Transport Events toward the Arctic in Summer 2017

Study of Chemical and Optical Properties of Biomass Burning Aerosols during Long-Range Transport Events toward the Arctic in Summer 2017

Modelling and Observation of Mineral Dust Optical Properties over Central Europe

Error simulations of uncorrected NDVI and DCVI during remote sensing measurements from UAS

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