Wyniki wyszukiwania - BazTech

1

Aerosol physical properties in Spitsbergen's fjords: Hornsund and Kongsfjorden during AREX campaigns in 2014 and 2015

Markuszewski P., Rozwadowska A., Cisek M., Makuch P., Petelski T.

Oceanologia

|

2017

|

No. 59 (4)

460--472

EN

We present results of measurements of aerosol physical properties conducted on board of r/v Oceania during two cruises to the Spitsbergen region in 2014 (AREX 2014) and 2015 (AREX 2015). Measurements of aerosol size distribution, aerosol scattering coefficient and black carbon concentrations were made in two different Spitsbergen fjords: Hornsund and Kongsfjorden. The aerosol size distribution was measured in the size range from 0.09 μm to 47 μm using two aerosol size distribution spectrometers and a standard condensation particle counter. For the scattering coefficient an integrating nephelometer was used. Black carbon concentration was measured by an aethalometer. Temporal variabilities in physical properties of aerosol observed during the AREX 2014 and AREX 2015 campaigns were much higher than the differences between both fjords. The basic factors influencing aerosol conditions were advection and local generation of marine aerosol. In 2015 an episode of smoke advection was observed in both fjords causing an increase in the mean black carbon concentration from 7–12 ng m−3 to about 60 ng m−3, and an aerosol scattering coefficient at 550 nm from 2–4 Mm−1 to 12–17 Mm−1. Moreover, under certain conditions statistically significant gradients in aerosol optical properties were observed along the fjord axis reflecting an impact of mountains surrounding the fjords.

2

Aerosol Optical Depth variations due to local breeze circulation in Kongsfjorden, Spitsbergen

Cisek M., Petelski T., Zieliński T., Makuch P., Pakszys P., Rozwadowska A., Markuszewski P.

Oceanologia

|

2017

|

No. 59 (4)

422--430

EN

This paper presents the results of Aerosol Optical Depth (AOD) studies which took place in Ny-Ålesund in the spring of 2014 during the iAREA campaign. The measurements were taken using Microtops II hand-held sunphotometers along the Kongsfjorden, on a path leading from the research village to the fjord opening. Local breeze circulation was observed during the measurement campaign which resulted in an evident increase of AOD along the measurement profile towards the open sea. Using the observed AOD, changes over the open sea have been calculated and the location of the breeze front has been determined.

3

Studies of vertical coarse aerosol fluxes in the boundary layer over the Baltic Sea

Petelski T., Markuszewski P., Makuch P., Jankowski A., Rozwadowska A.

Oceanologia

|

2014

|

No. 56 (4)

697--710

EN

The results of studies of the vertical gradient of aerosol concentration measurements made during cruises of r/v "Oceania" between 2008 and 2012 are presented. Using the results from those experiments, sea spray emission fluxes were calculated for all particles of sizes in the range from 0.5 µm to 8 µm, as well as for particles of sizes from fifteen channels of 0.5 µm width. The information obtained was further used to calculate the Sea Salt Generation Function (SSGF) for the Baltic Sea depending on the wind speed and the aerosol size distribution.